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Home My WebLink AboutITEM 2 REZ10-0001 (PART 2) APPENDICIES 40 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 This page left intentionally blank 41 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 APPENDIX A PRIORITY HABITAT AND SPECIES DATA 42 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 This page left intentionally blank 43 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 WASHINGTON DEPARTMENT OF FISH AND WILDLIFE PRIORITY HABITATS AND SPECIES POLYGON CROSS REFERENCE REPORT IN THE VICINITY OF T21 R05E SECTION S16 Report Date: October 16, 2008 Priority Habitats and Species (PHS) polygons are labeled, on the map, with a unique number (PHS Poly#) and symbol, roughly in the center of the polygon. This PHS Po" refers to a list of form numbers (Form#) contained in the PHS Polygon Cross Reference Report, listed below. The Form#'s refer to the attached Priority Habitats and Species Polygon Report. This report details each species or habitat depicted as a polygon on the map. =orm number 900000 indicates species or habitat information is unknown or the area was not mapped. Form numbers 909998, 909997, or 909996 indicate data compilation errors. PHS Polygon Cross Refernce Report PHS Poly# Form# 1 900000 • 2 902525 3 902525 4 902525 • 5 902525 6 918540 7 902646 8 902547 9 902538 10 902640 11 902538 12 902538 13 902538 14 902538 15 902525 -16 902525 17 902525 18 902646 19 902803 tom. 20 902646-918540 21 902539 22 902539 23 902640-918540 24 902525 25 902640-918540 26 902538-902640-918540 27 902539-902640-918540 28 902525 29 902525 30 902803-918540 31 902539-918540 32 902539-902803-918540 33 902539-918540 34 902539-918540 35 902525 36 902539 37 902539-902803-918540 38 902539-902803-918540 39 902539-902803-918540 40 902539-918540 41 902640-918540 42 902539-902640-902803-918540 43 902525 44 902803-918540 45 902572 a 46 902646 47 902646 - PHS Polygon Cross Reference Report Page 1 of 2 44 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 WASHINGTON DEPARTMENT OF FISH AND WILDLIFE PRIORITY HABITATS AND SPECIES POLYGON REPORT IN THE VICINITY OF T21 R05E SECTION S16 Report Date: October 16, 2008 Information About Priority Habitats and Polygon Report Priority Habitats and Species (PHS) polygons are labeled, on the map, with a unique number (PHS Poly#) and symbol, roughly in the center of the polyvr This PHS Poly# refers to a list of polygon numbers and form numbers (Form#) contained in the PHS Polygon Cross Reference Report. The Fomt#'s refer t: the PHS Polygon Report, listed below. This report details each species or habitat depicted as a polygon on the map. For a complete description of the code. used in this report please refer to the Fish and Wildlife Map Products document. This document may be viewed on our web site at'www.wdfw.wa.govlhabt release.htm. Priority Habitats and Species Polygon Summary List This report and the accompanying maps may contain species that are not considered priority by the Washington Department of Fish and Wildlife. YES urd- the "Priority" Column in the Summary list below indicates that the species is considered a priority and is on the Priority Habitats and Species List and/or Species of Concern List. A "blank" or NO under the "Priority" column indicates the species is not considered an agency priority. Priority State Status PHS Code Common Name Species Use Criteria YES CEELR ROOSEVELT ELK REGULAR CONCENTRATION YES RIPAR RIPARIAN ZONES YES UNOS URBAN NATURAL OPEN SPACE YES WET WETLANDS PHS Polygon Report Form#: 902525 PHS Code: WET Scientific Name: Season: Common Name: WETLANDS Species Use Criteria: Accurracy: ACCURATE WITHIN A QUARTER MILE Priority: YES State Status: Federal Status: Site Name: GREEN RIVER WETLANDS (LOWER RIVER). General Description: VARIOUS TYPES OF WETLANDS THROUGHOUT THE LOWER GREEN RIVER VALLEY (DOWNSTREAM FR OM FLAMING GEYSR PARK). SOME OF THESE ALSO HAVE OPEN WATER COMPONENTS. Source Date: 91 Source: MULLER, TED; ET AL; WDW, SCS, AND COUNTY. Source Code: PROF Synopsis: MANY OF THESE SITES HAVE BEEN VISITED BY FIELD STAFF. Source Date: 12 90 Source: KING COUNTY SENSITIVE AREAS MAPS. Source Code: GSMAP Synopsis: A USGS BASED MAP SYSTEM ALSO USING NWI INFORMATION. Form#: 902538 PHS Code: WET Scientific Name: Season: Common Name: WETLANDS Species Use Criteria: Accurracy: ACCURATE WITHIN A QUARTER MILE Priority: YES State Status: Federal Status: Site Name: SOOS CREEK WETLANDS General Description: VARIOUS WETLANDS IN THE SOOS CREEK DRAINAGE BASIN. MANY OF THESE ALSO HAVE AN OP EN WATER COMPONENT. Source Date: 12 90 Source: KING COUNTY SENSITIVE AREAS MAPS. Source Code: GSMAP Synopsis: USGS BASED MAP SYSTEM WITH NWI INFORMATION. PHS Polygon Report Page 1 of 4 45 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 PHS Polygon Report form#: 902646 PHS Code: UNOS Scientific Name: Season: Common Name: URBAN NATURAL OPEN SPACE Species Use Criteria: Accurracy: Priority: YES State Status: Federal Status: Site Name: GREEN RIVER VALLEY CANDIDATE OPEN SPACE AREAS. General Description: STEEP FORESTED HILL SLOPES ALONG THE GREEN RIVER VALLEY. THESE AREAS ARE UNSTABL E BUT PROVIDE WILDLIFE HABITAT AND MIGRATION CORRIDORS. Source Date: 90 Source: MULLER, TED; WDW; PERSONAL OBSERVATIONS. Source Code: PROF Synopsis: MANY DRIVE-BYS AND AERIAL OVERFLIGHTS DURING PAST 16 YRS. ¢orm#: 902803 PHS Code: RIPAR Scientific Name: Season: Common Name: RIPARIAN ZONES Species Use Criteria: Accurracy: ACCURATE WITHIN A QUARTER MILE Priority: YES State Status: Federal Status: Site Name: GREEN RIVER RIPARIAN AREAS. General Description: FORESTED AREAS ALONG THE RIVERBANKS. Source Date: 90 Source: MULLER, TED, WDW; PERSONAL OBSERVATIONS. Source Code: PROF Synopsis: MANY DRIVE-BYS AND AERIAL SURVEYS DURING PAST 16 YEARS. Form#: 918540 PHS Code: CEELR Scientific Name: CERVUS ELAPHUS ROOSEVELTI Season: W Common Name: ROOSEVELT ELK Species Use Criteria: REGULAR CONCENTRATION Accurracy: LOCATION KNOWN TO GENERAL LOCALITY ONLY Priority: YES State Status: Federal Status: Site Name: GREENICEDAR RIVER General Description: GREEN/CEDAR RIVER WINTER ELK RANGE. KING COUNTY ELK HABITAT INCLUDES RESIDENT AND WINTER MIGRATORY ELK. Source Date: 08 Source: KRENZ, MIKE AND RUSSELL LINK • WDFW Source Code: PROF Synopsis: ELK HABITAT OBSERVED NORTH OF 1-90. Source Date: 092597 Source: SPENSER, ROCKY WDFW Source Code: PROF Synopsis: RMEF ELK MAPPING. BEST ESTIMATION OF WINTER RANGE. PHS Polygon Report Page 3 of 4 46 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 WASHINGTON DEPARTMENT OF FISH AND WILDLIFE PRIORITY FISH REPORT FROM THE WASHINGTON LAKES AND RIVERS INFORMATION SYSTEM (WLRIS) DATABASE 'rr! IN THE VICINITY OF T21 R05E SECTION S16 October 16, 2008 Information About The Fish Presence Report The fish information in this report only includes information that Washington Department of Fish and Wildlife (WDFW) maintains in a central comp- uter database. This information only documents the location of important fish resources to the best of our knowledge. It is not a complete inven- tory of the fish species in the state. Fish are identified as priority by WDFW if they meet one of three criterion as listed in the Priority Habitats and Species List. The list is available by contacting WDFW Priority Habitats and Species section at (360) 902-2543, or it is available on our web site at wdfw.wa.gov/hab/phspage.htm, To insure appropriate use of this information, users are encouraged to consult with WDFW biologists. Streams with priority fish species from the WLRIS database are highlighted on the accompanying map. Due to the complexity of displaying linear features individual species that utilize each river reach are not distinguishable. If more species specific information is needed, users should request digital data or contact the WLRIS database manager. State status information is not available in the WLRIS database for these species. Please see WDFW Species of Concern List for current status. For a copy of this list, contact WDFW Endangered Species Section at (360) 902-2515, or it is available on our web site at wdfw.wa.gov/wlm/ diversty/soc/soc.htm. Priority Fish Presence: Fish Code Species Name Stream Name Stream LLID • Date Surveyed CCT Resident Cutthroat 1221558472869 04-12-09 CCT Resident Cutthroat 1221580473166 04-12.09 CCT Resident Cutthroat 1221866473064 04-12-09 CHFA Fall Chinook 1221866473064 05-06-28 CHFA Fall Chinook 1222026473267 05-06-28 CHMF Fall Chum 1221558472869 04-01-23 COHO Coho Salmon 1221558472869 05-06-28 COHO Coho Salmon 1221580473166 05-06-28 COHO Coho Salmon 1221595473188 05-06-28 COHO Coho Salmon 1221631472937 05-06-28 COHO Coho Salmon 1221652473123 05-06-28 COHO Coho Salmon 1221661473108 05-06-28 COHO Coho Salmon 1221749473028 05-06-28 COHO Coho Salmon 1221866473064 05.06-28 COHO Coho Salmon 1222026473267 05-06-28 COHO Coho Salmon 1222043473273 05-06-28 STWI Winter Steelhead 1221580473166 05-04-14 STWI Winter Steelhead 1221703472958 05-04-14 STWI Winter Steelhead 1222026473267 05-04-14 CCT Resident Cutthroat Big Soos Creek 1221744473025 04-12.09 CHFA Fall Chinook Big Soos Creek 1221744473025 05-06-28 COHO Coho Salmon Big Soos Creek 1221744473025 05.06-28 PINK Pink Salmon Big Soos Creek 1221744473025 03-11-14 SOCK Sockeye Salmon Big Soos Creek 1221744473025 03-11-14 STSU Summer Steelhead Big Soos Creek 1221744473025 05-04-12 STWI Winter Steelhead Big Soos Creek 1221744473025 05-04-14 CCT Resident Cutthroat Green River 1222505474752 04-12-09 CHFA Fall Chinook Green River 1222505474752 05-06-28 CHMF Fall Chum Green River 1222505474752 04-01-23 COHO Coho Salmon Green River 1222505474752 05-06-28 DBT Dolly Varden/Bull Trout Green River 1222505474752 05-01-10 PINK Pink Salmon Green River 1222505474752 03-11-14 RBT Rainbow Trout Green River 1222505474752 04-09-29 SOCK Sockeye Salmon Green River 1222505474752 03-11-14 STSU Summer Steelhead Green River 1222505474752 05-0412 STWI Winter Steelhead Green River 1222505474752 05-0414 CCT Resident Cutthroat White River 1222573471997 04-12-07 CHFA Fall Chinook White River 1222573471997 04-01-21 CHMF Fall Chum White River 1222573471997 04-01-21 Priority Fish Presence Report Page 1 of 2 47 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 APPENDIX B NATURAL HERITAGE RARE, THREATENED AND ENDANGERED PLANT DATA 48 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 This page left intentionally blank 49 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Sections that Contain Natural Heritage Features Associated with Wetlands 4 Data Current as of October 31, 2007 List of surveyed land sections in Washington identified by the Natural Heritage Program as reported to contain Natural Heritage Features associated with wetlands. Contact the Washington Natural Heritage Program at (360) 902-1667 for more detailed information on locations and occurrences. Town. Range Sec. Town Range Sec Town Range Sec Town Range Sec T17N R08W S14 T18N R03E S07 T19N R02W S41 T20N R08E S08 T17N R08W S15 T18N R03E S08 T19N R02W S45 T20N ROSE S09 T17N R08W S16 T18N R03E S28 T19N R03E S29 T20N ROBE S1C T17N R08W S17 T18N R03E S30 T19N R03E S30 T20N ROBE S16 T17N ROBW S18 T18N R03E S33 T19N R03E S31 T20N R33E S14 T17N R08W S19 T18N R06W S10 T19N R03E S32 T20N R33E S15 T17N R08W S20 T18N R10W S09 T19N R03W S17 T20N R33E S16 T17N R08W S21 T1BN R10W S13 T19N R03W S29 T20N R33E S18 T17N ROBW S22 T18N R10W S15 T19N R03W S32 T20N R35E S10 T17N R08W 523 T18N RlOW S16 T19N R04W S17 T20N R35E S15 T17N ROBW S28 T18N R10W S24 T19N R04W S18 T20N R36E S02 T17N ROBW S29 T18N R10W S25 T19N R04W S19 T20N R37E S35 T17N R09W S13 T18N R11W S01 T19N R04W S20 T20N R42E S27 T17N R09W S24 T18N R11W 503 T19N R05E S09 T21N R02W S03 T17N R11W S02 T18N R11W S15 T19N R05W S02 T21N R02W S04 T17N R11W S35 T18N R11W S16 T19N R05W S17 T21N R02W SOS T17N R11W S36 T18N R11W S17 T19N R11W S04 T21N R02W S07 T17N R12W S22 T18N R11W S18 T19N R11W S05 T21N R02W S08 T17N R12W S23 T18N R11W S20 T19N R11W S07 T21N R02W S21 T17N R12W S26 T18N R11W S21 T19N R11W S08 T21N R02W S32 T17N R12W S27 T18N R11W S22 T19N R11W S09 T21N R02W S35 T17N R14E S02 T18N R11W S35 T19N R11W S17 T21N R03W S09 T17N R14E S07 T18N R11W S36 T19N R11W S18 T21N R03W S10 T17N R14E S08 T18N R12W S02 T19N R11W S22 T21N R03W S15 T17N R34E S14 T18N R12W S03 T19N R11W S27 T21N R03W S16 T17N R34E S23 TIBN R12W S10 T19N R11W S33 T21N R03W S17 T17N R34E S24 T18N R12W S11 T19N R11W S34 T21N R03W S21 T17N R34E S25 T18N R12W S13 T19N R11W S35 T21N R03W S22 T17N R34E S26 T18N R12W S14 T19N R17E S18 T21N R03W S28 T17N R35E S30 T18N R12W S22 T20N R02W S02 T21N R03W S29 T18N ROLE S05 T18N R12W S23 T20N R02W S03 T21N R03W S30 T18N ROLE S06 T18N R12W S24 T20N R03W S31 T21N R04E S15 T18N R01E SOB T18N R12W S26 T20N R05W S04 T21N R04E S16 T18N ROLE S09 TIBN R12W S27 T20N R05W S05 T21N R04E S19 T18N ROLE S16 T18N R13E S21 T20N R05W S08 T21N R04E S20 T18N ROLE S21 TIBN R15E S27 T20N R05W S09 T21N R04E S21 T18N R018 S22 T18N R35E S16 T20N R05W S14 T21N R04E S22 T18N R01E S26 T18N R35E S17 T20N R05W 515 T21N R04E S23 T18N ROLE S27 T19N ROLE S12 T20N R05W S16 T21N R04E S26 TIBN ROLE S28 T19N ROLE S25 T20N R05W S20 T21N R04E S27 T18N ROLE S34 T19N ROLE S28 T20N R05W S21 T21N R04E S28 T18N ROLE S35 T19N ROLE S29 T20N R05W S26 T21N R04E S29 T18N ROLE S38 T19N ROLE S30 T20N R05W S28 T21N R04E S30 T18N ROLE S39 T19N ROLE S31 T20N R05W S29 T21N R04W S19 T18N R01E S43 T19N ROLE S32 T20N R05W S30 21N R04W S23 T18N R01W S22 T19N ROLE S33 T20N R05W S31 ~21N RO E S14> T18N Rf72E S01 T19N ROLE S38 T20N R05W S32 /~T21N RQ6E S15'y T18N R02E S23 T19N R02E S25 T20N R06E S36 621N R06E S22 / T18N R02E S26 T19N R02E S30 T20N R07E S21 T21N R06E S23 T18N R02E S31 T19N R02E S36 T20N R07E S28 T21N R08E S33 T18N R02E S32 T19N R02W S23 T20N R07E S31 T21N R08W S12 T18N R02W S33 T19N R02W S24 T20N R08E S03 T21N R09W S09 T18N R03E S05 T19N R02W S25 T20N ROBE S04 T21N R10W S18 TIBN R03E S06 T19N R02W S26 T20N R08E S05 T21N R10W S19 Washington Natural Heritage Program, P O Box 47014, Olympia, WA 98504-7014 ,r1 50 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades RezonelAUP - Auburn, Washington August 2010 This page left intentionally blank 51 CRITICAL AREA STUDY Keith:Fabing, Inc. Green River Community College/Trades Rezone/A UP --Auburn, Washington August 2010 3 APPENDIX C WETLAND DETERMINATION METHODOLOGY AND REGUALTIONS f f 52 CRITICAL AREA STUDY Keith;Fabing, Inc. Green. River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 This page left intentionally blank 53 'CRI,TICAL;AREA STUDY Keith Fabing, Inc. Green'River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 INTRODUCTION This appendix provides technical details on how a wetland boundary is determined. Since regulatory staff are well acquainted with this process, we have set the relevant information into a separate appendix, for those reviewers of this report who wish to understand the process and methods of wetland delineation as well as the results. Wetland Regulatory Parameters Wetland boundary determinations are based on guidance from federal, state, and local regulatory agencies, which are discussed below. In brief, lesser jurisdictions can make and effect regulations that govern wetlands and streams, as long as these regulations are not less restrictive than federal or state regulations. For instance, if a local jurisdiction chooses to protect wetlands with greater stringency than state regulations afford, they are at liberty to do so, but they cannot effect any regulation that is less strict than state or federal guidelines. Similarly, state guidelines must be at least as stringent as federal guidelines. Private consultants and local and state agencies may delineate (determine the boundaries of) wetlands, but only the U.S. Army Corps of Engineers (hereinafter referred to as the "COE") can confirm a wetland boundary as jurisdictional. Federal Regulatory Guidance The U.S. Army Corps of Engineers and the U.S. Environmental Protection Agency (hereinafter f.; referred to as the "EPA") require use of the Corps of Engineers Wetland Delineation Manual (Environmental Laboratory, 1987), hereinafter referred to as the 1987 Manual along with the newly adopted Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (U.S. Army Corps of Engineers, 2010). Washington State has adapted the 1987 Manual for use in Washington State, in a document that incorporates federal, regional, and state guidance, issued by the Corps and the Washington State Department of Ecology (hereinafter referred to as the "WDOE"). This manual has been revised and was classified by the WDOE (1997) as the Washington State Wetlands Identification and Delineation Manual, hereinafter referred to as the "WA Manual". It is used throughout the state to determine wetland areas when applying state and local government regulations under the Shoreline Management Act and the Growth Management Act. Pursuant to Section 404 of the Clean Water Act, the COE regulates the discharge of dredged and fill materials into waters of the United States, including wetlands, through the COE permitting process. The COE and the EPA define wetlands as: "those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs, and similar areas." The COE may no longer have regulatory authority over isolated wetlands, and decisions on isolated status are made on a case-by-case basis. 54 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 State Regulatory Guidance The WDOE reviews or approves many federal, state, and local permits. Washington State, through the WDOE, has authority to issue 401 Water Quality Certification for projects that require individual COE permits under Section 404. Such projects involve filling or grading within navigable waters and waters below the headwaters of streams and rivers (including adjacent wetlands), filling or grading of more than 0.1 acre of isolated waters (including wetlands), or filling or grading within waters (including adjacent wetlands) above the headwaters of streams and rivers. The Washington State Department of Fish and Wildlife (hereinafter referred to as the "WDFW") administers the State Hydraulic Code, intended to protect fish and their habitat. Typically, WDFW regulates any work below ordinary high water, though where sensitive salmonid species are concerned, they may also provide guidance or regulatory control over wetlands with a surface connection to salmonid streams. Local Regulatory Guidance Since there are many local jurisdictions within Washington State, with many conflicting regulatory requirements, please see the attached wetland report for a discussion of the relevant regulations, or contact your local planning office. Until 2002, when the Growth Management Act required that all local agencies use either the Washington State Department of Ecology Manual or an acceptable alternative, local jurisdictions were allowed to use either the 1987 Manual, the WA Manual, or the Federal Manual for Identifying and Delineating Jurisdictional Wetlands (Corps et al. 1989), hereinafter referred to as the 1989 Manual. WETLAND CRITERIA For an area to be legally considered a wetland (jurisdictional wetland), it must satisfy three criteria, as outlined in the appropriate Manual: it must possess hydrophytic vegetation; it must have hydric soils; and it must have wetland hydrology. Detailed descriptions of these three criteria follow. Hydrophytic Vegetation Plants typically adapted to wetland conditions are considered hydrophytes (wet-loving). The hydrophytic vegetation identification procedure in the WA Manual and the 1989 Manual defines hydrophytes. Dominant plant species (usually those species with greater than 20 percent cover) and subdominant species (usually those species with between 5 and 20 percent cover) are recorded in each vegetation stratum (tree canopy, shrub layer, and herbaceous layer). The wetland indicator status of each plant is assigned using the USFWS National List of Species that Occur in Wetlands: Northwest- Region 9 (Reed, 1988) and the Supplement to Wetland Plants (Reed, 1993). The indicator codes for plant species are noted below. 55 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland Plant Indicator Status r` Code Designation Wetlands probability OBL Obligate wetland species > 99 FACW Facultative wet 67 to 99 FAC Facultative 34 to 66 FACU Facultative upland 1 to 33 UPL Obligate upland < 1 NI No indicator status 0 *Percent chance that plant occurs in a wetland When 50 percent or more of the dominant and subdominant species in each stratum (tree, shrub, and/or herb layer, considered cumulatively) have an indicator status of OBL, FACW, and/or FAC, the vegetation is considered hydrophytic. Plant nomenclature used in this report follows Flora of the Pacific Northwest (Hitchcock and Cronquist, 1976), The Jepson Manual: Higher Plants of California (Hickman, 1995), and Field Guide to the Common Wetland Plants of Western Washington and Northwestern Oregon (Cooke, 1997). Scientific names and indicator status are given only at the first reference to each species. A list of the plant species observed on the site is given in Appendix E. Species names are recorded on the field data sheets (see Appendix D). Wetland community types will be discussed as they are described by Cowardin et al. (1979). Hydric Soils rr. Before the field investigation, soil survey maps of the relevant area from the National Cooperative Soil Survey of the U.S. Department of Agriculture's Natural Resources Conservation Service (NRCS) are examined (see Figure 8). The NRCS was formerly known as the Soil Conservation Service. Soil maps may not be sufficient to precisely determine the extent of hydric soils on a site because of mapping methods and scale. Most NRCS maps are produced using aerial photographic interpretation, with only limited field verification. Map units of a nonwetland soil commonly include small areas of hydric soil and vice versa. On-site soil investigation is necessary, to compare mapped soil units to existing field conditions. Hydric soils are saturated, flooded, or ponded for a sufficient time during the growing season to develop anaerobic (saturated) conditions favoring the growth and regeneration of hydrophytic vegetation. Anaerobic conditions cause hydric soils to form certain characteristics, which can be observed in the field. Hydric indicators include the following: an 8-inch or greater layer of organic material at or near the surface; the presence of a matrix chroma of 1 or less in a soil with no redoximorphic accumulations (unmottled), or 2 or less in soils with redoximorphic accumulations; gleyed soil; organic soils (peats and mucks); and accumulation of sulfidic material. Soils are analyzed for hydric indicators as described by the Washington Manual, the 1987 Manual, and/or the 1989 Manual, and as amended by the subsequent letter of guidance (U.S. Army Corps of Engineers, 1992). The NRCS, in cooperation with the National Technical Committee for Hydric Soils, has compiled lists of hydric soils in the United States (U.S. Department of Agriculture, 1991), which describe and define mapped soils as being hydric or nonhydric. Since soils are mapped at a coarse scale of resolution, field-truthing is necessary to determine exactly which soils occur on-site. 56 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 In the field, on-site samples are taken in each wetland plot using a 20-inch soil probe or auger. Soils are characterized using standard NRCS protocol. Soil colors are identified using a Munsell soil color "t chart (Kollmorgen, 1988). Depth of soil saturation is recorded for each plot. Many probe samples at locations across the wetland/upland boundary are examined, to determine the exact boundary line. Sampling points confirm mapped soil unit boundaries or establish field-truthed boundaries. Hydrology Wetland hydrology is considered present when there is periodic inundation or soil saturation of the surface for a specified period during the growing season (FICWD 1989; WDOE 1997). Wetlands need not be wet year-round to support hydric soils and vegetation. Under normal conditions, hydrologic indicators are used to determine if the hydrology is either currently present or can be inferred from the guidelines provided in the WA Manual or the 1989 Manual. These indicators include site inundation, soil saturation to the surface or within a specific distance from the surface, water table depth, water marks on vegetation, drift lines, plants displaying morphological adaptations, waterborne sediment deposits, algal deposits on the soil surface, oxidized rhizospheres, and wetland drainage patterns. The criteria establish the depth and duration of inundation or saturation (including capillary fringe) necessary to determine positive wetland hydrology. The WA Manual, 1989 Manual, and subsequent letters of guidance (March 1992) establish that wetland hydrology is present when the soil is inundated or saturated within 10-16 inches of the surface for at least 12.5 percent of the growing season. The growing season is defined as "When the soil temperature at 20 inches gets above 41 °F, or after the last date that the air ANN temperature gets below 28°F in 5 out of the last 10 years." For much of Western Washington at low elevations, the growing season is generally considered to be March 1 to October 31 (Washington State Department of Ecology, 1997). The growing season would therefore be an average of 245 days and the duration of saturation would be approximately 30 days. Note: Typically, a wetland must meet all three of the above parameters in order to be considered a jurisdictional wetland. Some common exceptions to this rule include areas where hydrophytic vegetation has been mowed, grazed, or graded away, and areas so recently inundated or saturated that they have not yet developed hydric soils. These are considered "disturbed," "atypical," or "problem" wetlands, and their delineation takes a slightly different form that more closely examines the observable parameters. FIELD METHODS To determine the location and extent of wetlands within the project boundaries, the site is traversed to examine areas with wetland field indicators. Wetlands are identified on the basis of the observable presence of hydrophytic vegetation, hydric soils, and wetland hydrology using the routine method outlined in the appropriate manual. During the site evaluation, detailed sample plots are located in distinct representative vegetation units, to characterize the wetland community and to determine each wetland's rating. In addition, a general assessment of the functions of each wetland is performed. Wetland/upland boundaries are then delineated by walking and flagging the edges of each identified wetland. 57 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 WETLAND FUNCTIONS Wetlands play important roles, providing valuable benefits to the landscapes in which they exist. Each wetland serves some function that has some benefit, although specifics vary from wetland to wetland. Understanding and identifying these benefits and roles is currently limited to qualitative and semiqualitative judgments and knowledge of potential functions and their benefits. Wetland functions and values identified by many sources (Adamus et al., 1987, Mitsch and Gosselink, 1986, Reppert et al., 1979, Sather and Smith, 1984) include the following: • hydrologic support • storm- and floodwater attenuation • flood peak desynchronization • sediment stabilization/erosion control • water quality improvement • high primary productivity • accumulation of organic material • nutrient cycling and utilization • food chain support • habitat diversity for fish and wildlife • wildlife sanctuary/refuge • passive and active recreation The entire site was examined for the presence of these functions and a qualitative assessment of the value of the function was made using a semiquantitative wetland assessment method (Cooke, 2004) and the Washington State Department of Ecology wetland functional assessment method. See data sheets in Appendix D. The results as they apply to the wetlands reviewed herein are found in Section 4 of this report. REFERENCES Adamus, P.R., E. J. Clairain, Jr., R.D. Smith, and R.E. Young. 1987. Wetland Evaluation Technique (WET); Volume IT Methodology. Operational Draft Technical Report Y-87. U.S. Army Engineer Waterways Experimental Station. Vicksburg, Mississippi. Cooke, S.S. 2004. Wetland and Buffer Functions, A Semi-Quantitative Assessment Methodology. Seattle, Washington, Cooke Scientific Services, Inc. Cooke, S.S. 1997. Field Guide to the Common Wetland Plants of Western Washington and Northwestern Oregon. Seattle, Washington, Seattle Audubon Society. Cowardin, L., V. Carter, F. Golet, and E. LaRoe. 1979. Classification of Wetland and Deepwater Habitats of the United States. U.S. Fish and Wildlife Service, Office of Biological Services, Washington, DC. Publication No. FWS/OBS-79/31. Environmental Laboratory. 1987. Corps of Engineers Wetlands Delineation Manual. Technical Report Y-87-1, U.S. Army Corps of Engineers Waterways Experimental Station, Vicksburg, Mississippi. Federal Interagency Committee on Wetland Delineation (FICWD). 1989. Federal Manual for Identifying and Delineating Jurisdictional Wetlands. U.S. Army Corps of Engineers, U.S. Environmental Protection Agency, U.S. Fish and Wildlife Service, U.S. Department of Agriculture Soil Conservation Service, Cooperative Technical Publication, Washington, DC. 58 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Hickman, J.C. (Editor), 1995. The Jepson Manual: Higher Plants of California. Berkeley, California, University of California Press. Hitchcock, C.L. and A. Cronquist. 1976. Flora of the Pacific Northwest. Seattle, Washington, University of Washington Press. Kollmorgen Corporation. 1988. Munsell Soil Color Charts. Baltimore, Maryland. Mitsch, W.J., and J. Gosselink. 1986. Wetlands. Van Nostrand Reinhold Co., Inc. Reed, P.B. 1988. National List of Species That Occur in Wetlands: Northwest-Region 9. U.S. Fish and Wildlife Service. Welut 86/WIZ. 47. Reed, P.B. 1993. Supplement to the National List of Species that Occur in Wetlands: Northwest - Region 9. U.S. Fish and Wildlife Service. Reppert, R., W. Sigelo, E. Stakhiv, L. Messman, C. Meyers. 1979. Wetland Values: Concepts and Methods for Wetlands Evaluation. Virginia, U.S. Army Corps of Engineers, Institute for Water Resources. Sather, J.H., and R.D. Smith. 1984. An Overview of Major Wetland Functional Values. U.S. Fish and Wildlife Service. FWS/OBS-84/18. U.S. Army Corps of Engineers (Corps). 1992. Guidance Letter. U.S. Army Corps of Engineers (Corps). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region. (Version 2.0) ed. J.S. Wakeley, R.W. Lichvar and C.V. Noble. ERDC/EL TR-10-3. Vicksburg, Mississippi: U.S. Army Research and Development Center. U.S. Department of Agriculture (USDA). 1991. Hydric Soils of the United States. Soil Conservation Service, in cooperation with the National Technical Committee for Hydric Soils. Miscellaneous Publication #1491. Washington State Department of Ecology (WDOE). 1997. Washington State Wetlands Identification and Delineation Manual. Publication No. 96-94. Olympia, Washington. 59 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 APPENDIX D I WETLAND DETERMINATION DATA FORMS lI I f60 CRITICAL AREA STUDY Keith Fabing, Inc. Green%River Community College/Trades Rezone/AUP - Auburn, .Washington August 2010 This page left intentionally blank 61 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn; Washington August 2010 ■ DATA FORM 1 (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual Project/Site:C. Celt tct~} e Date: Applicant/owner:,r.~- fit; M J County:jr-, I NU- State: Investigator(s): S/FB: T"`}--f {sir Do Normal Circumstances exist on the site? yes Community I : Is the site significantly disturbed (atypical situation)? yes Transect I : Is the area a potential Problem Area? Yes no Plot ID: Explanation of atypical or problem area: I VEGETATION (For strata, indicate T = tree; S = shrub; II = herb; V = vine) Dominant Plant Species Stratum % cover Indicator Dominant Plant Species Stratum % cover Indicator Ff~ { u i.t. C,1 1, iCU TRdL/yxiwrq ' i P-VS `t X07 N'Rr~}tit~7t~E~Z~Z{~,J CJ HYDROPHYTIC VEGETATION INDICATORS: i % of dominants OSL, FACW, & FAC 1< Check all indicators that apply & explain below: Visual observation of plant species growing in Physiological/reproductive adaptations areas of prolonged inundation/saturation Wetland plant database Morphological adaptations Personal knowledge of regional plant communities Technical Literature Other (explain) Hydrophytic vegetation present? yes no Rationale for decision/Remarks: HYDROLOGY Is it the growing season? es J no Water Marks: yes no Sediment Deposits: yes, 'no on Based on: soil temp (record temp ) Drift Lines: yes no Drainage Patterns yes no , f- other (explain) Dept. of inundation: inches Oxidized Root (live ro Local Soil Survey: yes no Channels <12 in. es no Depth to free water in pit: inches FAC Neutral: yes no Water-stained Leaves y no Depth to saturated soil: inches - Check all that apply & explain below: Other (explain): Stream, Lake or gage data: Aerial photographs: er: Wetland hydrology present? yes no Rationale for decision/Remarks: 62 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 SOILS Map Unit Name n ( WOpp C*P4~~ I Drainage Class (Series & Phase) '~3k ljO-,) Field observations confirm Yes (No) Taxonomy (subgroup) ma e? Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil (inches) (Munsell (Munsell size & contrast structure, etc. profile moist moist (match description) LID" Hydric Soil Indicators: (check all that apply) Histosol Matrix chroma 2 with mottles Histic Epipedon Mg or Fe Concretions Sulfidic Odor High Organic Content in Surface Layer of Sandy Soils Aquic Moisture Regime Organic Streaking in Sandy Soils Reducing Conditions Listed on National/Local Hydric Soils List Gleyed or Low-Chroma (=1) matrix Other (explain in remarks ~ Hydric soils present? yes no Rationale for decision/Remarks- -Wetland Determination (circle) Hydrophytic vegetation present? r~ no Hydric soils present? no Is the sampling point yes no Wetland hydrology resent? es no within a wetland? Rationale/Remarks: 63 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 DATA FORM 1(Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual ProjecllSite~TL- C'D Ml 1 0N CDate: ~l' cAu-da c~i11-s` C AL pA1 C _ 3 Applicant/ownerc-'(L&& County: ,4 t N~- i` State: ~Ga Investigator(s): t(v~ ltd S/T/R: S -Mt t- ~,SC ~ , Do Normal Circumstances exist on the site? yes o Community . Is the site significantly disturbed (atypical situation)? es ~ o Transect ID: Is the area a potential Problem Area? yes no Plot ID: Explanation of atypical or problem area: VEGETATION (For strata, indicate T = tree; S = shrub; H = herb; V = vine) Dominant Plant Species Stratum % cover Indicator Dominant Plant Species Stratum % cover indicator W 0 HYDROPHYTIC VEGETATION INDICATORS: % of dominants OBL, FACW, & PAC Check all indicators that apply & explain below: Visual observation of plant species growing in Physiological/reproductive adaptations areas of prolonged inundation/saturation Wetland plant database Morphological adaptations 7~ Personal knowledge of regional plant communities Technical Literature Other (explain) Hydrophytic vegetation present? yes . no Rationale for decision/Remarks: !HYDROLOGY Is it the growing season? yes no Water Marks: yes no Sediment Deposits: yes no on Based on: soil temp (record temp ^ Drift Lines: yes I no Drainage Patterns: yes no other (explain) Dept. of inundation: L inches Oxidized Root (live roofs Local Soil Survey: y s no Channels <12 in. es no Depth to free water in pit: inches FAC Neutral: yes no Water-stained Leaves y no Depth to saturated soil: inches Check all that apply & explain a ow: Other (explain): Stream, Lake or gage data: Aerial photographs: Other: Wetland hydrology present? yes no Rationale for decision/Remarks: 64 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 SOILS Map Unit Name (y~~ (~jd l~ Drainage Class (Series & Phase) sx4 0 SW f-5 Field observations confirm Yes No Taxonomy (subgroup) mapped type? Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil (inches) (Munsell (Munsell size & contrast structure, etc. profile moist) moist) match descri t'on) r 114 1 Hydric Soil Indicators: (check all that apply) Histosol Matrix chroma < 2 with mottles Histic Epipedon Mg or Fe Concretions Sulfidic Odor High Organic Content in Surface Layer of Sandy Soils Aquic Moisture Regime Organic Streaking in Sandy Soils Reducing Conditions Listed on National/Local Hydric Soils List Gleyed or Low- ma (=1) matrix Other (explain in remarks Hydric soils present? eyes no Rationale for decision/Remarks: Wetland Determination (circle) Hydrophytic vegetation present? no Hydric soils present? yes no Is the sampling point yes (1J Wetland hydrology resent? es n within a wetland? RationaletRemarks: 65 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 DATA FORM 1 (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Cor Wetland Delineation Manual Project/Site: U~ PR9-r- Date. ~3S~ Applicant/owner: County: i1.A3 State: A Investi ato s : R LN~ S!T/R:Is t P'S 'E: W. Do Normal Circumstances exist on the sits? yes no Community ID: Is the site significantly disturbed (atypical situation)? Transect ID: Is the area a potential Problem Area? yes no Plot ID: Explanation of atypical or problem area: VEGETATION (For strata, indicate T = tree; S = shrub; H = herb; V = vine) Dominant Plant Species Stratum % cover Indicator Dominant Plant Species Stratum % cover bidicator C~w'~iao f L-S - C) I s 8 C -jb rim X t P p~J ~1~4! t.1 ~b w ~ i t•~ Vie,: " (~gL- t HYDROPHYTIC VEGETATION INDICATORS: % of dominants OBL, FACW, & FAC s' Check all indicators that apply & explain below: Visual observation of plant species growing in Physiological/reproductive adaptations areas of prolonged inundation/saturation Wetland plant database Morphological adaptations Personal knowledge of regional plant communities Technical Literature Other explain Hydrophytic vegetation present? yes no Rationale for decision/Remarks: HYDROLOGY Is it the growing season? yes no Water Marks. yes no Sediment Deposits~ y no on 1-111 Based on: soil temp (record temp Drift Lines: yes no Drainage Patterns. no w" other e lain J Dept. o inundation: inches Oxidized Root (live r nLS Local Soil Survey: yes Channels <12 in. Yes Depth to free water in pit: inches FAC Neutral: yes no Water-stained Lea,/es ' yes n~o Depth to saturated soil: ( inches Check all that apply & explain below: Other (explain):; Stream, Lake or gage data: Aerial photographs: er: Wetland hydrology present? yes noS-pl { u1STs Rationale for decision/Remarks: (Lt i 17 rW~ 66 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 SOILS Map Unit Name N oo-*-Ak S-ANcy L.O.h" Drainage Class (Series & Phase) Field observations confirm Yes No Taxonomy (subgroup) mapped ? Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil (inches) (Munsell (Munsell size & contrast structure, etc. profile moist moist (match description) 4 c t r Hydric Soil Indicators: (check all that apply) Histosol Matrix chroma 2 with mottles Histic Epipedon Mg or Fe Concretions Sulfidic Odor High.Organic Content in Surface Layer of Sandy Soils Aquic Moisture Regime Organic Streaking in Sandy Soils Reducing Conditions Listed on National/Local Hydric Soils List Gleyed or Low a (=I) matrix Other (explain in remarks Hydric soils present? yes no Rationale for decision/Rem Wetland Determination (circle) Hydrophytic vegetation present? no Hydric soils present? yes no Is the sampling point yes no Wetland hydrology resent? es no within a wetland? RationalelItemarks: 67 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades RezonelAUP - Auburn, Washington August 2010 DATA FORM I (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual ProjecUSite: Date: ( JKP/(~ Applicant/owner: County: le l"G - State: \1 !9 Investigator(s): l w S/f/R: 1 n -z Do Normal Circumstances exist on the site? yes Community ID: t~ Is the site significantly disturbed (atypical situation)? Transect ID: Is the area a potential Problem Area? yes no Plot ID: -Explanation ofatypical or problem area: VEGETATION (For strata, indicate T = tree; S = shrub; H = herb; V :Tie) Dominant Plant S ecies Stratum % cover Indicator Dominant Plant Species Stratum % cover Indicator v pl~4o sv~~ifJ6A l-crt~1 V 17~zp 01 W vii' + ~ / J • Y~ ) HYDROPHYTIC VEGETATION INDICATORS: %ofdominants OBL, FACW, & FAC y /3 f Check all indicators that apply & explain below: Visual observation of plant species growing in Physiological/reproductive adaptations areas of prolonged inundation/saturation Wetland plant database' Morphological adaptations Personal knowledge of regional plant communities Technical Literature Other (explain) vegetation present? yes no Rationale for decision/Remarks: HYDROLOGY Is it the growing season? yes on ~yye_s no Water M aryes no Sediment Based on: _ soil temp (record temp Drift Lines: ye no Drainage Patterns: ye no other (explain) Dept o inundation: inches Oxidized Root (live roots) Local Soil Survyes o J Channels <12 in. es no Depth to free water in pit: inches' FAC Neutral: yes no Water-stained Leaves y no Depth to saturated soil: inches Check all that apply & explain below: Other (explain): Stream, Lake or gage data: Aerial photographs: Other: Wetland hydrology present? yes no Rationale for decision/Remarks: 68 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 SOILS Map Unit Name Norz- Sll i' USAJ1 J Drainage Class (Series & Phase) Field observations confirm Yes Taxonomy (subgroup) mapped type? ONO Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil (inches) (Munsell (Munsell size & contrast structure, etc. profile moist moist) (match escri lion ~ I Lz' ~ 'c 4 f i Hydric Soil Indicators: (check all that apply) Histosol Matrix chroma 2 with mottles Histic Epipedon Mg or Fe Concretions Sulfidic Odor High Organic Content in Surface Layer of Sandy Soils Aquic Moisture Regime Organic Streaking in Sandy Soils Reducing Conditions Listed on NationallLocal Hydric Soils List Gleyed or Low-Chroma - atrix Other (explain in remarks) Hydric soils present? yes Rationale for decision/Remarks: Wetland Determination (circle) Hydrophytic vegetation present? Yes Hydric soils present? yes Is the sampling point yes ~ no Wetland hydrology sent? es no within a wetland? Rationale/Remarks: 69 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 DATA FORM 1. (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual Project/Site: T Date: " D KF(.c- ( Applicant/owner: County: t ra - State: \,<-/A Investigators : S/T/R:_17_9 V`1. I ?Q, Do Normal Circumstances exist on the site. yes Community I ~k_ L Is the site significantly disturbed (atypical situation)? n Z 1D Is the area a potential Problem Area? yes n Plot ID: Explanation of atypical or problem area: VEGETATION (For strata, indicate T = tree; S= shrub; H= herb; V =vine) Dominant Plant Species Stratum % cover Indicator Dominant Plant Species Stratum % cover Indicator t119 'Wt,,D T-A c L 1-Z Nr isifjil;s3 rk. ' r HYDROP.HYTIC VEGETATION INDICATORS: % of dominants OBL, FACW, & FAC t- Check all indicators that apply & explain below: Visual observation of plant species growing in Physiological/reproductive adaptations _ areas of prolonged inundation/saturation Wetland plant database Morphological adaptations Personal knowledge of regional plant communities Technical Literature Other (explain) Hydrophytic vegetation present? yes no Rationale for decision/Remarks: HYDROLOGY Is it the growing season? yes no Water Mark : yes no Sediment Deposits: yes no _ on Based on: _ soil temp (record temp Drift Lines: yes no Drainage Pattem. ye no ? 1 other (explain) Dept. of inundation: inches Oxidized Root (live ro Local Soil Surve : yes no Channels <12 in. es Depth to free water in pit: inches FAC Neutral: yes Water-stained Leav yes o Depth to saturated soil: incha-~ Check all that apply & explain below: Other (explain): Stream, Lake or gage data Aeria] hoto >ra hs: ther. Wetland hydrology present? yes no Rationale for decision/Remarks: SOILS Map Unit NameWQ)~ - } P' l LOW Drainage Class (Series & Phase) Field observations confirm Yes No Taxonomy (subgroup) mapped type? Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil (inches) (Munsell (Munsell size & contrast structure, etc. profile moist moist) (match description) ~I Hydric Soil Indicators: (check all that apply) Histosol Matrix chroma 2 with mottles Histic Epipedon Mg or Fe Concretions Sulfidic Odor High Organic Content in Surface Layer of Sandy Soils Ayuic Moisture Regime Organic Streaking in Sandy Soils Reducing Conditions Listed on National/Local Hydric Soils List Gleyed or Low- a (=1) matrix Other (explain in remarks Hydric soils present? yes no Rationale for decision/Rem Wetland Determination (circle) Hydrophytic vegetation present? no Hydric soils present? no Is the sampling point dyes no Wetland hydrology resent? es no within a wetland? Rationale(Remarks: 71 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 r. DATA FORM 1 (Revised) Routine Wetland Determination (WA State Wetland Delineation Manual or 1987 Corps Wetland Delineation Manual i Project/Site: t L++l Date: 3 Z) Applicant/owner. L17-1-71 O;E' NIX Jr1qQ County: V:4r- State: Investigator(s): 11-3 S/T/R: V") Do Normal Circumstances exist on the site? yes Community Is the site significantly disturbed (atypical situation)? Transect 1D Is the area a potential Problem Area? yes no Plot ID: Explanation of atypical or problem area: VEGETATION (For strata, indicate T = tree; S = shrub; H = herb; V = vine) Dominant Plant Species Stratum % cover Indicator Dominant Plant Species Stratum %cover ► Indicator `8.x.1 rw L i lslA 93 1> lC-~ Ott r;: t ^ lzco Z HYDROPHYTiC VEGETATION INDICATORS: % of dominants OBL, FACW, & FAC L3 Check all indicators that apply & explain below: Visual observation of plant species growing in Physiological/reproductive adaptations areas of prolonged inundation/saturation Wetland plant database Morphological adaptations Personal knowledge of regional plant communities Technical Literature Other (explain) Hydrophytic vegetation present? yes no Rationale for decision/Remarks: HYDROLOGY Is it the growing season? 0yes no Water Marks: yes no Sediment Deposits: yes no on Based on: soil temp (record temp Drift Lines: yes no Drainage Patterns yes o other (explain) Dept. of inundation: inches Oxidized Root (live ro ,ts) Local Soil Surv : yes no Channels <l2 in. es no Depth to free water in pit: inches, t/ FAC Neutral: yes Water-stained Leav s yes no Depth to saturated soil: _ inches Check all that apply & explain below: Other (explain): Stream, Lake or gage data: her: Aerial photographs: Wetland hydrology present? yes no Rationale for decision/Remarks: r~ SOILS Map Unit Name(` Drainage Class (Series & Phase) Field observations confirm Yes No Taxonomy (subgroup) mapped type? Profile Description Depth Horizon Matrix color Mottle colors Mottle abundance Texture, concretions, Drawing of soil (inches) (Munsell (Munsell size & contrast structure, etc. profile moist moist) (match description) -Nt Hydric Soil Indicators: (check all that apply) Histosol Matrix chroma 2 with mottles Histic Epipedon Mg or Fe Concretions Sulfidic Odor High Organic Content in Surface Layer of Sandy Soils Aquic Moisture Regime Organic Streaking in Sandy Soils Reducing Conditions Listed on National/Local Hydric Soils List Gleyed or Low-Chrom ix Other (explain in remarks) Hydric soils present? yes no Rationale for decision/Retnarks: Wetland Determination (circle) Hydrophytic vegetation present? Hydric soils present? no is the sampling point yes ro Wetland hydrology resent? yes no within a wetland? Rationale/Remarks: 73 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 APPENDIX E PLANT SPECIES LIST l 74 CRITICAL AREA STUDY Keith Fabing, Inc. Green.River Community College/Trades Rezone/AUP =-,Aubum, Washington _ -August 2010 This page is left intentionally blank 75 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades,Rezone/AUP'- Auburn; =Washington August 2010 Wetland A: Plant Species List Indicator Status Common Name Latin Name Trees FAC Red Alder Alnus rubra Shrubs FACU (fac) Himalayan Blackberry Rubus armeniacus Herbs FACW Creeping Buttercup Ranunculus repens var. repens FACU Dandelion Tarazicum officinale OBL American Speedwell Veronica americana FACU+ Canada Thistle Cirsium arvense FACU Red Clover Trifolium pratense Grasses FACU Orchard Grass Dactylis glomerata Sedges and Rushes FACW Soft Rush Juncus effusus Ferns and Fern Allies FAC Lady Fern Athyrium feliz femina 76 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland B: Plant Species List Indicator Status Common.name Latin Name Trees FACW Oregon Ash Fraxinus latifolia FAC Western•Red Cedar Thuja plicata FACU Douglas Fir Pseudotsuga menziesii FAC Red Alder Alnus rubra FAC Black Cottonwood Populus balsamifera ssp. trichocarpa FACU Bigleaf Maple Ac"er macrophyllum Shrubs FACU, (fac) Himalayan Blackberry Rubus.armeniacus FACU (fac) Evergreem.blackbeny Rubus lacinatus FAC+ SalmonberryRubus spectabilis var. spectabilis FACU Red HuckleberryVaccinium parvifolium FACU Indian Plum Oemleria cerasiformis FACU Trailing Blackberry Rubus ursinus ssp. macropetalus FACW Hardhack Spiraea douglasii FACW Red-Osier Dogwood Cornus serecia FACU English Holly, _Ilex aquifolium Herbs FACW Creeping Buttercup Ranunculus repens var. repens FAC+ Stinging Nettle Urtica dioica ssp. gracilis var. lyallii OBL American Speedwell Veronica americana FACW- Watson Willowherb Epilobium ciliatum FAC Pig-a-Back Plant Tolmiea menziesii. FACU Dandelion Taraxicum officinale Sedges and Rushes OBL Slough Sedge Carex obnupta Ferns and Fern Allies FAC Lady Fern Athyrium felix femina FACU Sword Fern Polystichum munitum FACU Bracken Fern Pteridium aquilinum 77 CRITICAL AREA STUDY Keith,Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington „ August 2010 APPENDIX F WETLAND FUNCTIONAL ASSESSMENT DESCRIPTIONS t k ' ' 78 - CRITICAL AREA STUDY Keith Fabing, Inc. August Green River Community College/Trades'Rezone/AUP -:Auburn;Washington 2010 This page left intentionally blank 79 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Flood/Storm Water Control Wetlands serve in flood/stormwater control through detention of peak flows within a wetland system and the slow discharge of the water to downstream receiving waters. The efficiency of a particular wetland system in performing runoff control is based upon the storage capacity and outlet discharge capacity of the wetland relative to the magnitude of the inflow. The value of wetlands in reducing downstream flooding increases with an increase in wetland area, the magnitude of the flood, the proximity of the wetland to the flooded area, and the lack of other storage areas (Cooke, 2000). Base Flow/Groundwater Support Functions Wetlands can recharge an aquifer, discharge to a downstream wetland, and/or attenuate surface water flows. Wetlands can provide groundwater recharge or discharge, or provide both, at different times of the year. The majority of wetlands serve predominantly for groundwater discharge and only a few are recharge systems. Groundwater recharge replenishes aquifers and filters water. With later discharge elsewhere (often in other wetlands), it provides a perennial water source for wetlands and provides dry season stream flow, benefiting stream dependent species (Cooke, 2000). Forested wetland areas reduce surface water flows by intercepting falling rain, absorbing water through roots, and creating an absorbent duff layer on the forest floor. Furthermore, particularly in till areas, the forest cover increases infiltration by breaking up the soil structure. Erosion/Shoreline Protection Functions Erosion control is closely linked with other wetland functions and is most often of concern in wetland systems with water flow sufficient to re-suspend and transport sediments, or in wetlands that have been physically disturbed. Decreased water velocity, vegetative structure, soil root-binding properties and substrate type will lessen the effect of water-related erosion. This function is especially present in shallow, flood plain wetlands where velocities are slow and vegetation is dense. Such vegetation is composed of species that are effective traps of sediments, and which impede or slow water flow so that sediments settle out. Erosion and shoreline protection is especially important in riparian corridors where the vegetation can have strong root systems to hold sediments together and prevent loss of stream banks. This function is not present in isolated wetlands that do not have water flowing through them (Cooke, 2000). Water Quality Improvement Functions The morphology of freshwater wetlands provides simple physical processes that remove sediment. Flood plain morphology, the length and width of the wetland, landscape characterization, vegetation community structure, and productivity have a great influence on the water velocity, type of sedimentation and rate of sedimentation. Particulate materials are removed through settling, which is controlled by water velocity, particle size, the residence time of water in the wetland, physical filtration by vegetation, and substrate (Cooke, 2000). Wetlands remove excessive nutrients, heavy metals, and certain organic compounds through a variety of physical and biological processes. The ability of a wetland to perform these functions is closely related to other functions such as sediment removal, water quality parameters, wetland hydrology, and vegetation community composition, density, richness, structure, and productivity. The ability of a wetland to perform these functions varies with the nature of the wetland, the degree of disturbance of %•-o the wetland, and according to unusual events and seasonal cycles. Water quality parameters such as 80 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 dissolved oxygen (DO), pH, and total suspended solids (TSS) influence the chemical form and fate of nutrients, metals, and organic compounds in wetland systems. Nutrients and other pollutants often bind with suspended sediments are incorporated into the soils through sedimentation. Nutrients, metals and organics stored in the soils are taken up by vegetation as biomass, buried in the sediments as peat is deposited, or exported out of the wetland (Cooke, 2000). Natural Biological Support Functions Wetlands generally are characterized by high primary productivity (food production that fuels the food chain). Primary production within wetlands can be important to wildlife and fish that spend part or all of their lives within wetlands. There are two major energy flow patterns in wetlands: the grazing food chain which involves the consumption of living green plants, and the detrital food chain composed of organisms that depend on detritus and/or organic debris for their food source. Areas with surface flow have the potential to export decomposed photosynthetic products beyond the boundary of the wetland (Cooke, 2000). Nutrient cycling in wetlands occurs in both plants and the sediments. Nutrients can be stored in sediments by being bound to organic compounds and clays. Nutrients that are incorporated into plant tissues are unavailable to the ecosystem as long as the plant material is alive. Annual growth in deciduous plants usually dies back at the end of the growing season, and the biomass ends up falling to the ground. The biomass either decomposes and releases the nutrients as dissolved compounds, or stays bound to organic matter in saturated conditions until conditions become conducive for decomposition. Once the nutrients are released, they become available for uptake by other plants, can be in storage in the sediments, and the cycle continues (Cooke, 2000). Many species of wildlife are adapted to or require wetland habitats for at least a portion of their life cycle. The variety of vegetation, substrate types, hydrologic regimes, and the sizes and characteristics of the edge between habitat types are critical factors for wildlife. The association between adjacent habitats is especially important in riparian areas that are crucial to many species of wildlife (Cooke, 2000). Overall Habitat Functions Plant species occur in distinct communities that are identifiable and often repeated across the landscape. Most species of both plant and wildlife have preferred habitats in specific zones associated with physical gradients such as light, moisture, hydrologic regime and elevation. High plant species richness is often associated with areas that have multiple habitats in close proximity. Mature wetland systems are characterized by the presence of many niches accounting for high plant and animal diversity. Rare, large or unusual habitats are valuable and are often set aside as sanctuaries. The rareness of a wetland community "type" may be due to the lack of a particular set of environmental factors, or species distributions in a particular watershed or region. The rarity of a wetland-associated species may be due to the fact that the species is adapted to a specific set of environmental conditions, which may not be present in very many places. The opportunity for the species to have appropriate conditions for living may therefore be rare. Wetlands may also be differentially lost and rare in a region because particular wetland types have experienced more development pressure or are especially sensitive to human impacts (Cooke, 2000). 81 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 ( Specific Habitat Functions • Invertebrate Habitat. Wetlands near aquatic habitats can be considered to have aquatic invertebrates (insects), even if none are directly observed. Examples of invertebrate habitat are muddy shallow water areas where water velocities are slow, no fine sediments build-up, and thin- stemmed emergent plants such as sedges, rushes and some aquatic herbs are present (Cooke, 2000). • Amphibian Habitat. Water depth is important, with individual species preferring specific depths. In general, shallow water zones with between 1 and 2.5 feet of water are ideal. Urbanized wetlands where bullfrogs are present are less likely to have a rich amphibian fauna (Cooke, 2000). • Fish Habitat. It is assumed that if a stream associated with a wetland has good gravels, permanent moving water, and overhanging vegetation along the banks of the stream is present to prevent water temperatures from getting too high, it has high fish habitat potential. If the same conditions exist but an obstruction over 15-feet long is present downstream, then the habitat potential is only moderate to low (Cooke, 2000). • Mammal Habitat. High habitat potential is where a large very structurally diverse habitat is present within the wetland or adjacent buffer boundary that is at least 100-feet wide. The presence of houses and domesticated pets decreases the likelihood of native small mammals (Cooke, 2000). • Bird Habitat. High habitat potential is available in seasonally flooded agricultural fields, large structurally diverse wetlands, or lacustrine (lake or large pond) systems with associated wetland and buffer habitats (Cooke, 2000). Cultural/Socioeconomic Functions Cultural and economic characteristics are evaluated from a purely value-based perspective. Most of the human-use opportunities can be quantified by determining the ownership of the wetland and associated buffer, and the proximity of the wetland to humans who could potentially use the wetland for recreational or commercial purposes (Cooke, 2000). This page left intentionally blank 82 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August:2010 83 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 APPENDIX G WETLAND FUNCTIONAL ASSESSMENT DATA FORMS f 84 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Aubum, Washington,.,-,. August 2010 This page left intentionally blank 85 CRITICAL AREA STUDY Keith Fatiing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington 2010 August 2000 Wetland and Buffer Functions and Semi-quantitative Performance Assessment updated 8/04 Wetland #bC1943]lEtA RZNM , CD q ,Cry. Staff iN(r--~Date Location S C? T x(14 R Iv N/A = Not Applicable, Nil = No information available Table 1: Determinin Wetland Size in Landsca a Context Attribute Lon 1 pt-) Medium 2 ts. High 3 ts. Total kbsolute Size <I acre':') 540 acres > 10 acres NN'etltuld Loss 41 Basin --<-7(j-0 0 20 - 60 >60 ° ° Size Relative to Other N\-etlands in I31S1I7 {r 1 < 1110° o of aver,` 100 - 200 'o of t > 200111) of avenge NkVI nia s) - average size 31LC Buffer title _ f l 7i to 200 feet > 300 feet Buffer Condition > 6(7"° tstur►)2()-60° o disturbed < 30° o disturbed If score is 1.4 then give the question a 1 score/5 Relative Size If score is 1. to 3.4 then give the question a If score is 2.5 to >-3 then give the question a 3 Function Criteria Group 1 1 t Group 2 2 is Group 3 3 is Flood/ size cumulative score (see Table 1) -size cumulative score- (see Table 1) -size cumulative score (see Table 1) Storm Water rivenne, or shallow depression -mid-sloped wetland -lake, depressions, headwaters, bogs Control X < 10 % forested cover -10 - 30 % forested cover 30 % forested cover -unconstrained outlet semkonstrained outlet Xculvertlbemied outlet points located in lower 1/3 of the drainage -located in middle 1/3 of the drainage -located in upper 113 of the drainage max 15 Base Flow/ Size cumulative score (see Table 1) -Size cumulative score (see Table 1) _ Size cumulative score (see Table 1) Ground Water rivenne, or shallow depression -mid-sloped wetland _ take,depressions, Support located in lower 113 of the drainage -located in middle 113 of the drainage headwaters,bogs LDO- Y temporarily flooded or saturated -seasonally or semi-permanently -located in upper 1 /3 of the drainage points Xvegetation < 20 % OBL species flooded or saturated permanently flooded or saturated, (max 15) -vegetation 20 to 40 % OBL or Intermittently exposed species _vegetation > 40 % OBL s les Erosion/ -sparse grasslherbs or no veg along -sparse wood orveg along OHWM _dense wood or veg along OHWM Shoreline OHWM Protection -wetland extends < 30 m from wetand extends 30 - 60 m from wetland extends > 200 in from OHwM - OHWM OHwM points e20 % shoreline developed -2o to 60% shoreline developed >60 % shoreline developed max 9 Water Quality -rapid flow through site moderate flow through site I'slow flow through site Improvement _ < 50 % veg cover -50 - so % cover > 80 % Vey cover -<20% of basin upstream from 20 to 50% of basin upstream from 50% of basin upstream from points! wetland is developed wetland is developed wetland is developed (max 15) -result from Table 2 result from Table2 result from Table 2 _ Soil coarse -gravel, Sand, XSoll organic mineral mix _ Sol heavy organic muck and peat sand oam 86 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 2000 Wetland and Buffer Functions and Semi-quantitative Performance Assessment updated 8/04 -A Wetland #t't k~CiJ?`4 • ~~L~ Staff }&fDate 1 Table 2: Overland Flow Contained in Wetland . 11 Attribute Low (1 pt.) Medium 2 ts.) H' Total C onhgunition Plate-shaped shalinvr howl- cep Bo« l- slza red D.raiuage- Basin Size < ? acres 2-i acres Outlet Unconstmitied Semi-constrained ;unrd Input Groundwater . urfaie tlo'vr am `ui tSc r a« C. mill- ri13LUU1Fr:ffer Basin (Condition < ?0° o 20-40 0 0 >400 im peLvious itri pen ious im aeMOU's Flow, Contained score/5- Natural `size cumulative score (see Table 1) size cumulative score (see Table 1) -size cumulative score (see Table 1) Biological _ low connectivity to veg'd buffers Imod connectvity to veg'd buffers _ high connectivity to veg'd buffers SU11170rt _ag land, tow veg structure 42 layers of vegetation -high veg structure Xseasonal surface water -permanent surface water _open water pools through summer -one habitat type Xtwo habitat -?13 habitat types PAB POW PEM PSS PFO EST PAB PO PE PS PFO EST PAB POW PEM PSS PFO EST low plant diversity 6 species) moderate plant diversity (7-15 spp) -high plant diversity 15 spp) 1 MBA x' ~T 50 % invasive species -10 to 50 % invasive species 10% invasive species _ low organic accumulation moderate organic accumulation -high organic accumulation Aow organic export moderate organic export -high organic export -few habitat features c me habitat features -many habitat features buffers very disturbed -buffers slightly disturbed -buffers not disturbed points isolated from upland habitats -partially connected to upland habitats -well connected to upland habitats max 36 Overall Habitat Xs¢e cumulative score (see Table 1) -size cumulative score (see Table 1) size cumulative score (see Table 1) Functions Xlow, habitat diversity -moderate habitat diversity -high habitat diversity points X low sanctuary or refuge moderate sanctuary or refuge -high sanctuary or refuge max 9 SpPCIfIC `low invertebrate habitat 'Xmaderate invertebrate habitat -high invertebrate habitat Habitat low amphibian habitat -moderate amphibian habitat -high amphibian habitat FunctioQ§ -low fishiTa6rrat ~ebitat _~t points f> -low mammal habitat moderate mammal habitat -high mammal habitat (max L((Sv bird habitat moderate bird habitat -high bird habitat 87 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 • 2000 Wetland and Buffer Functions and Semi-quantitative Performance Assessment updated 8/04 i i Wetland##6R-0 c0-( . CA, Staff I NtSDate ~n -5,- l t 06' Cultural/ -low educational opportunities -moderate educational opportunfties high educational opportunities Socioeconorni -low aesthetic value moderate laesthetic value -high aesthetic value c J lacks commercial fisheries, moderate commercial fisheries, -high commercial fisheries, agriculture, renewable resources agriculture, renewable resources agriculture, renewable resources Xlackshistorical or archeological _historicalorarcheological site -important historical orarcheologica) resources -some passive and active recreational site lacks passive and active recreational opportunities -many passive and active recreational points _U opportunities opportunities max 18 -privately owned rival awned, some public access ' nrestricted public access Dominant Vegetation: Wildlife: Notes: 3 i 88 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 2000 Wetland and Buffer Functions and Semi-quantitative Performance Assessment updated 8/04 Welland #t_]~ Staff Date3 t Location S R T2~i P4 R aE N/A = Not Applicable, N/I = No information available Table 1: Determining Wetland Size in L mdsca a Context Attribute t. Medium 2 ts. Hi V (3 tc.) Total Absolute Size <3 acres i-10 acres > NVetland Loss in Basin < 20 20 - 60 ° o >6 o 0 Size Relative to Other \Vedinds in Basin (on < 100'o of av erage 100 - 2001 ° o of t > 200'o of average ill\\7 tna ps) "Wer ll e size size Buffer Size < -17 75 to 200 fret > 200 Feet Buffer" Condition > 60 o r ~ d 20-60° o dishrrbed < 200 o disturbed If scr e is 1.4 then g*ivr I-lie question a 1 score/5 Relative Size t score i, 1.5 to 2.4 then gig e the question a 2 If score is 2.5 to _3 dirri givr the c u•stion :l FF Criteria Group 1 1 t Grou 2 2 is Group 3 3 is size cumulative score (see Table 1) size cumulative score (see Table 1) size cumulative score (see Table 1) rriverine, or shallow depression mid-sloped wetland -lake, depressions, headwaters, bogs 10 % forested cover _ 10 - 30 % forested cover X> 30 % forested cover -unconstrained outlet p _semi-constrained outlet 2Sfulvertthermed outlet points R located in lower 1/3 of the drainage _ located in middle 1r3 of the drainage -located in upper 113 of the drainage I max 1 J~ Base Flow/ Size cumulative score (see Table 1) ' JSize cumulative score (see Table 1) -Size cumulative score (see Table 1) Ground Water _ riverine, or shallow depression X rn dsloped wetland _ fake,depressions, Support located in lower 1 /3 of the drainage yyy"-located in middle 113 of the drainage headwaters,bogs N3 Di4Z _ temporarily flooded or saturated 4seasonatly or semi-permanently -located in upper 113 of the drainage points vegetation < 20 % OBL species flooded or saturated , permanently flooded or saturated, (max 15) -vegetation 20 to 40 % OBL or intermittently exposed species v etatlon > 40 % OBL species Erosion/ _sparse grass/herbs or no veg along -sparse wood or veg along OHWM -dense wood or veg along OHWM Shoreline OHWM Protection -wetland extends < 30 m from -wetland extends 30 - 60 m from -wetland extends > 200 in from t/ L of IWM aHVVM OHwM points _ QO % shoreline developed _ 20 to 60% shoreline developed _>60 % shoreline developed max 9 Water Quality -rapid flow through site -moderate flow through site X• ow flow through site Improvement _ < 50 % veg cover 50 - 80 % cover > 80 % veg cover 14 l' 9 _<20% of basin upstream from _20 to 50% of basin upstream from > 50% of basin upstream from points y wetland is developed wetland is developed wetland is developed (max 15) _ result from Table 2 result from Table 2 _ result from Table 2 L _ Soil curse -gravel, Sand, ~--Soil organic mineral mix _ Soil heavy organic muck and peat san oam 89 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 2000 Wetland and Buffer Functions and Semi-quantitative Performance Assessment updated 8/04 Wetland Staff LEIQl Date Table 2: Overland Flow Contained in Wedand Attribute wtiti Medium (2 ts. High (3 ts.) Total Configuratiatl Plate-shat)cy Shallow bo«•1- Deep Bowl- shaped Diailrr *e Basin Size < 2 acres 2-5 :ores % ` ' es Outlet ! ucl~nstr:tined Sen 111]e co:lshainr Input Groundwater 5urficeglowand 'urM. _W only ~rowxltvatcr Basin Conditloll < 20'o T0-4() ° o 7>4(r. inl'iervious 411. CLl'IOILS It _ 3 Flow Contained score/5 Natural size cumulative score (see Table 1) size cumulative score (see Table 1) -size cumulative score (see Table 1) Biological low connectivity to veg'd buffers -mod connectivity to veg'd buffers _ high connectivity to veg'd buffers Support _ag land, law veg structure _2 layers of vegetation high veg structure Xseasonal surface water _pemranent surface water open water pools through summer -one habitat type two habitat types 3 habitat types PAB POW PEM PSS PFO EST PAB POW PEM PSS PFO EST fhigh O PE l' PF EST low plant divers ity 6 species) moderate plant diversity (7-15 spp) ant diversity 15 spp) 50 % invasive species 10 to 50 % invasive skies invasive species -low organic accumulation moderate organic accumulation ganic accumulation _ low organic export -moderate organic export ganic export -few habitat features some habitat features abitat features buffers very disturbed -buffers slightly disturbed -buffers not disturbed points j isolated from upland habitats _partially connected to upland habitats -well connected to upland habitats max 36 Overall Habitat As¢e cumulative score (see Table 1) -size cumulative score (see Table 1) size cumulative score (see Table 1) Q Fun Lionss7 -low habitat diversity -moderate habitat drversity high habitat diversity i~ tpoints 1 low sanctuary or refuge moderate sanctuary or refuge high sanctuary or refuge max 8 Specific -low invertebrate habitat -moderate invertebrate habitat high invertebrate habitat Habitat low amphibian habitat -moderate amphibian habitat high amphibian habitat Functions ra ! kAA9h `ebM points a -low mammal habitat -moderate mammal habitat high mammal habitat C~ t (max j$ -low bird habitat -moderate bird habitat high bird habihat r~ , 90 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 2000 Wetland and Buffer Functions and Semi-quantitative Performance Assessment updated 8/04 1. Wetland#L4E;N StaffKK~~dlDate 2-2 S"-Pr- t7 t_ 1 Cultural/ -low educational opportunities -moderate educational opportunities igheducatianalopportunlties Socioeconomi low aesthetic value _ moderate /aesthetic value high aesthetic value ~ Tacks commercial fisheries, moderate commercial fisheries, _ high commercial fisheries, , , t ( agriculture, renewable resources agriculture, renewable resources agriculture, renewable resources FYI] Tacks historical or archeological historical or archeological site _importani historpl or archeological resources _some passive and active recreational site _ lacks passive and active recreational opportunities many passive and active recreational points(=1 opportunities opportunities max 18 rivate owned owned, some public access unrestricted public access tr Dominant Vegetation: Wildlife: rte., 91 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/A UP - Auburn, Washington August 2010 APPENDIX H WETLAND RATING FORMS J 92 'CRITICAL AREA STUDY Keith Fabing, Inc. Green:River Community College/Trades Rezone/AUP Aubum; Washington August 2010 This page left intentionally blank 93 CRITICAL AREA STUDY Keith'Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number WETLAND RATING FORM- WESTERN WASHINGTON Version 2 - Updated July 2006 to increase accuracy and reproducibility among users Updated Oct 2008 with the new WDFW definitions for priority habitats QD R Name of wetland (if known)r.-,PjEZj cz~, Date of site visit: _L, C)9 Rated by Trained by Ecology? Yes>(No, Date of training 000 SEC: © 7 TW NSHP:'~4 0 RNGE: 5E Is S/T/R in Appendix D? Yes- No_ Map of wetland unit: Figure Estimated size 5'V , M . SUMMARY OF RATING Category based on FUNCTIONS provided by wetland I_ II UIX IV Score for Water Quality Functions Category 1=Score >=70 Category 11= Score 51-69 Score for Hydrologic Functions Category III = Score 30-50 Score for Habitat Functions Category 1V = Score < 30 TOTAL score for Functions Category based on SPECIAL CHARACTERISTICS of wetland I II Does not Apply Final Category (,choose the "highest" category from above) Summary of basic information about the wetland unit We#land.LTiyit'has Special Wetland HGM Class Chaff actei ist~es used for Ratin Estuarine De ressional Natural Heritage Wetland Riverine Bo Lake-fringe Mature Forest Slope Old Growth Forest Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple X HGM classes resent Wetland IUting Form - western Washington 1 August 2004 version 2 To be used with Ecology Publication 04-06-025 94 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number Does the wetland unit being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. Check List: for Wetlands That May Need. Additional Protection 4'S NO .{i addii an '#o the pratvefton :recommended for its categor . SP1. Has the Welland unit been documented as a llab/tat f0I gill' Fedel'al~l' listed Threatened or Endangered animal or plant species (T'E species)? For the purposes of this rating system, "documented" means the wetland is on the appropriate state or federal database. SP2. Has the irelland unit been documented as hubitut.lor am State listed Threatened or Endangered animal species? For the purposes of this rating system, "documented" means the wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category I Natural. Heritage Wetlands see p. 19 of data form). SP3. Does the wedand unit contain individuals of Priority species listed by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as /x\ having special significance. To complete the next part of the data sheet you will need to determine the Hydra;7eomorphic Class of the wetland being rated The hydrogeomorphic classification groups wetlands into those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. See p. 24 for more detailed instructions on classifying wetlands. Wetland Rating Form - western Washington 2 August 2004 version 2 Updated with new utDFW definitions Oct. 2008 95 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A Up - Auburn, Washington August 2010 Wetland name or number Classification of Wetland Units in Western Washington if the hydi.olagic criteria listed in eal ch question do not apply to the enti a unit being rated, .you probably have o unit _with: multiple M(iM classes., In this case,;identify whicli hydrologic criteria: in ilhestious 1-7 apply, and go to,Question- 1. A e water levels in the entire unit usually controlled by tides (i.e_ except during floods)? NO - go to 2 YES - the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of auiual low flow below 0.5 ppt (parts per thousand)? YES - Freshwater Tidal Fringe NO-,Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a I Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringc it is rated as an Estuarine we [land. Wetlands that were called estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the term "Estuarine' wetland is kept. Please note, however, that the characteristics that define Category I and 11 estuarine wetlands have changed (see p. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. water and surface water runoff are NOT sources of water to the unit. NO - o to 3 YES - The wetland class is Flats If your wetland can be classified as a "Flats" wetland,. use the form for Depressional wetlands. 3. Does the entire wetland unit meet both of the following criteria? _The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) at least 20 acres (8 ha) in size; At least 30° o of the open water area is deeper than 6.6 ft (2 m)? NO - go to 4 YES - The wetland class is Lake-fringe (Lacustdrie. Fringe) 4. Does the entire wetland unit meet all of the fallowing criteria? The wetland is on a slope (slope can be very gradual), The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually 3fi diameter and less than I.fr.)ot deep)- NO - ~o to 5 YES - The wetland class is Slope Wetland Ratin¢ Form - ivestern Washington August 2004 version 2 Updated with new WDFW definitions Oct. 2008 96 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number 5. Does the entire wetland unit meet all of the following criteria? The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river The overbank flooding occurs at least once every two years. NOTE:.The riuerine unit can contain depressions that are filled with waterwhen the river is 1k c~rli» g. NO to b YES - The wetland class is Riverine b. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year. This means that any outlet, if present, is higher than the interior of the wed NO - go to 7 YES The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding. The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. NO - go to 8 YES - The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM clases. For example, seeps atthe base of a slope may grade into a riverine floodplain, or a small stream within a depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within your wetland NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HCT111 C'l~tisses u rlliii the 4j.-Mimd-unit being iaiec_I HGM C lass to iT,se iir R rtlii. Slope + Riverine Riverine Slope + Depressional Depressional Slope +Lake-fringe Lake-fi-inge Depressional +Riverine along stream within boundary Depressional De ressional + Lake-fringe Depressional Salt Water Tidal Fringe and any other class of freshwater Treat as ESTUARINE under wetland wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating Form - Western Washington 4 August 2004 version 2 Updated with new WDFW definitions Oct 2008 97 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number b~prt~ssiOnal and_Ha' s.Wettands WATER QUAL TY LTNCfiI[QN : Intdicators lhaf:the wetland unit functiotrs to: (-1y I ~ore vq b°x1 ty, -im rovi yi a{et uali D D 1. Does the wetland unit have the potential to improve water quality? (seep.38) D 1.1 Characteristics of surface water flows out of the wetland: Figure _ Unit is a depression with no surface water leaving it (no outlet) points = 3 D Unit has an intermittently flowing, OR highly constricted permanently flowing outlet points = 2 Unit has an unconstricted, or slightly constricted, surface outlet (permanently flowing) points = I Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = I (1f ditch is nqt permanently flawing treat unit as "intermilently flowing Provide photo or drawing S 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS D definitions) points = 4 NO ints = 0 D 1.3 C actedstics of persistent vegetation (emergent, shrub, and/or forest Cowardin class) Figure _ Wetland has persistent, ungrazed, vegetation > = 95% of area points = 5 D Wetland has persistent, ungrazed, vegetation > = 1/2 of area points = 3 Wetland has persistent, ungrazed vegetation > = 1 /10 of area points = 1 Wetland has persistent, ungrazed vegetation <1/10 of area points = 0 Ma of Cowardin vegetation classes DI A Characteristics of seasonal ponding or inundation. Figure D This is the area of the wetland unit that is ponded for at least 2 months, but dries out sometime during the year. Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 yrs. D Area seasonally ponded is > %2 total area of wetland points = 4 Area seasonally ponded is > '/4 total area of wetland points = 2 Area seasonally ponded is <'/4 total area of wetland points = 0 Ma of H dro eriods D Total for D 1 Add the points in the boxes above I D D2. Does the wetland unit have the opportunity to improve water quality? (see p. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants coming from several sources, but any single source would qualify as opportunity. Grazing in the wetland or within 150 ft Untreated stormwater discharges to wetland Tilled fields or orchards within 150 ft of wetland A stream or uE l_~ discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging Residential urban areas, golf courses are within 150 ft of wetland multiplier etW land is fed by groundwater high in phosphorus or nitrogen - Other C YES multiplier is 2 NO multiplier is 1 D TOTAL -Water Quality Functions Multiply the score from 131 by D2 S Add score to table on . I t Wetland Rating Form - western Washington 5 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 98 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number U. Depressimal and Flats Wetlands -Points •HYDRbLOGIC 1?[7NCTIONS - ludicators"that the wetland unit furictians to icy tsc~ p~noxl reduce flooding and stream degradation. D 3. Does the wetland unit have the potential to reduce flooding and erosion? (see p.46) D D 3.1 Characteristics of surface water flows out of the wetland unit Unit is a depression with no surface water leaving it (no outlet) points = 4 Unit has an intermittently flowing, OR highly constricted permanently flowing outlet points = 2 Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently flowing treat unit as "intermilently flowing Unit has an unconstricted, or slightly constricted, surface outlet ermanentlyflowin) points = 0 D D 3.2 Depth of storage during wet periods Estimate the height of ponding above the bottom of the outlet. For units with no outlet measure from the surface of permanent water or deepest part (if dry). Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 The wetland is a "headwater" wetland" points = 5 y Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 Unit is flat (yes to Q. 2 or Q. 7 on key) but has small depressions on the surface that trap water points = 1 Marks of ondin less than 0.5 fl Points = 0 D D 3.3 Contribution of wetland unit to storage in the watershed Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of unit points = 5 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire unit is in the FLATS class points D Total for D 3 Add the points in the boxes above 1 1 D D 4. Does the wetland unit have the opportunity to reduce flooding and erosion`! (seep. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect downstream property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. - Wetland is in a headwater of a river or stream that has flooding problems Wetland drains to a river or stream that has flooding problems Wetland has no outlet and impounds surface runoff water that might otherwise flow into a river or stream that has flooding problems multiplier - her YES multiplier is 2 NO multiplier is 1 D TOTAL - Hydrologic Functions Multiply the score from D 3 by D 4 Add score to table on p. 1 14M I Wetland Rating Form -western Washington 6 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 99 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Wetland naive or number These yriestiorrs aPAI~' o wetlo iih ref uIZ HGAI da's~c~s ~ Fbin#s {~usrc 1 c~ xe,. `HABITAT-FUNCTIONS - Indicators tlia unit-functions to provide iinportant.habitat P Ga:i H L Does the wetland unit have the ttatential to provide habitat for many species? H 1.1. Vegetation structure (.seep. 72) Figure Cheer` the apes gI've etation classes present (us defined by Cowardln)-:Sr_e threshold fir each class is !a acre or more than 10% of the cirea if unit is smaller Mon 2 S acres. Aquatic bed tE me rgent plants cniblshnub (areas seliere shnibs have >30% corer) orested (areas where trees have >30`;o corer) If the nnir has a.1br•ested class check il; The forested class has 3 out of strala. (can.opy_ sub-canopy. shnibs. herbaceous. inoss/gromid-corer) that each corer 20%-, idiin the forested polygon Add the number trf vegeraNon strucrures chat quuli fi°. If roll have: 4 structures or more points = 4 Map of Cowardin vegetation classes 3 structures points = 2 2 structures points = 1 I stricture points = 0 H 1-?. Hydroperiods (seep. 7-3) Figure_ C 'heel nc~ h oes n; a trtct rc;inres (/?rdi ~perindsy preseiar uvrhin the zr etlancL The r+ rarer r•e,irne has ti ern%er more than 10% iJ'the u•erland or acre to count. (see resr• fire descriptions (?f ki-drope•iods) Perrnaiientiv flooded or inundated 4 or more types present points = 3 Seasonally flooded or inundated 3 (Apes present points = 2 XOccasionalh- flooded or inundated 2 (Apes present point= 1 Saturated onh_- 1 type present points = 0 Permanent) flowing stye un or river in, or adjacent to. the n%:etland. Seasonally flovving stream in_ or adjacent to. the «-ethand Lake fringe ivedand = 2 points Freshwater tidal ivedund = 2 points Map of hydroperiods H 1.3. Richness of P1 ant Species (see p. 751 Count the number of plant species in the tivetland that corer at least ]OR--. (di>ferent parches of-the sanre species can he combined to ineet the si_e threshold) You di not (Acne to name the species. Di not include Eurasian tinfoil, reed cananag-rocs. payle loo.sestr iJe. Canadian Thisrle If you counted: > 19 species points = 2 Lisr species below if turf want ro: j - 19 species points = 1 < ? species points = 0 Total for page Wetland. Rating Form - western Washington 13 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 100 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number. H 1.4. hitersMrsion of habitats (seep 76) Figure_ Decide from the diagrams below whether .interspersion between Cowardin vegetation classes (described in H 1.11_ or the classes anal tumvegetated areas (e<w include open water or mudflats) is high, medium. low. or none. None = 0 points Low = 1 point Moderate = 2 points ~P [riparian braided channels] High = 3 points NOTE: If von have four or more classes or three vegetation classes and open water the rating is always "nigh". Use map of Cowardin vegetation classes H L5. SKcial Habitat Features: (seen. 77) Check the habitat frcrtrus.s drat ar e preserrrin the rr etlancl 77te number of checks is the number of points lrru Met into the nest column. i-~, Large. downed. wooch- debris within the wetland (>4in_ diameter and 6 ft long). Standing snags (diameter at the bottom > 4 inches) in the weiland Undercut banks are present for at least 6.6 ft (2m) and/or overhanging vegetation extends at least 3.3 ft (I m) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft (I0m) Stable steep banks of fine material that might be used. by beaver or-muskrat for denning (>30degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least 114 acre of thin-stemmed persistent vegetation or woody branches are present in areas that are permanently or seasonally inundated. (structures for egg-laying by amphibians) Invasive plants cover less than 25% of the wetland area in each stratum of plants NOTE: The 20% stated in early printings of the manual on page 78 is an error. H 1. TOTAL Score - potential for providing habitat .Add the scores f om H1.1, H1.2, H1.3, Hl. 4, H1. t t Comments Wetland. Kahan Forur - westem Washington 14 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 101 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number H 2. Does the wetland unit have the opportunity to provide habitat for many species? H 2.1 Buffers (seep. 0) Figure - Choose the description that best represents condition o f buf fer of iretlund unil. The highest scoring criterion that applies to the lredand is to he used in the ruting- .See teat for definition of "undisturbed. " - lot) in (330ft) of relativeh• undisturbed vegetated areas- rock- areas, or open water >95%' of circumference. No structures are within the undisturbed part of buffer. (relatively undisturbed. also means no-grazing. no landscaping, no daily human use Points = 5 - 1001n (33 0 fl) of relatively undisturbed vegetated areas, rocky areas- or open water > 50% circumference- Points = 4 - 50 m (170ft) of relaliti eh- wldisturrbed vegetated areas. rocky areas. or open water>95% circumference. Points =4 - 10() in (330fl) of relativeh- tuidistu.rbed vegetated areas. rocker areas, or open water > 25% circumference.. Points = 3 n 50 in { 170ft) of relativelz undisturbed vegetated areas, racks areas. or open water for > 50% circumference. Points = 3 If buffer does not meet any of the criteria above - No paved areas (except pared trails) or buildings within 25 in (90ft) of wetland > 950% circumference. Light to moderate grazing. or lawns are OIL- Points = 2 No pared areas or buildings Nvitlun 50m of wetland for>50% circumference. Li<, it to moderate grazing, or lawns are OK. Points = 2 - Heavy grazing in buffer. Points =1 - Vegetated buffers are <2m wide (6.6ft) for more than 95% of the circumference (e.g. tilled fields, paring, basalt. bedrock extend to edge of wedatid Points = O. - Buffer does not meet any of the criteria above. Points =1 Aerial photo showing buffers H 2.2 Corridors and Connections (seen 811 H 2.2.1 Is the wetland part of a relatively undisturbed and unbroh-en vegetated corridor (either riparian or upland) that is at least 150 ft wide, has at least 30% corer of shrubs. forest or native undisturbed prairie. that connects to estuaries- other ived ands or undisturbed uplands that are at (cast 250 acres in size? (dafns in riparian corridors. heuvih_' used ;ravel ror dy. paved roads. are considered breaks in the corric YES = 4 points Qyo to H 2.3) NO go to H 2.2? H 2-2.2 Is the wetland part of a relatively undisturbed an ken vegetated corridor (either riparian or upland) that is at least 5011 wide, has at least. 3(ro cover of shrubs or forest. and connects to estuaries. other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake-fringe wetlaud. if it does not have an undisturbed corridor as n1 the question above? YES=2 points (go to H2-3) NO H22.3 H 2.2.3 Is the wetland: within 5 mi Man) of a brackish or salt water estuan- OR within 3 mi of a large field or pasture (>40 acres) OR within .1 mi of a lake greater than 20 acres? YES =1 point 0 points Total for pagk Wetland Rating Form- %\estern Washington 15 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 102 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number A- H 23 Near or adiacent to other priority habitats listed to WDMV (see new and complete dese iptitms of YVI7F13'prioritr habitats, and the counties in which they call he found, ill thePHSrepor't /t1Pir:,4ivcffi:-. sarr.~t~c;',r,nhrhlrslts htn~) Which of the following priority habitats are within 330A (100tH) of the n etlaud unit" NOTE: the connections do not have to be relativeIr undisturbed. Aspen Stands: Pure or mixed stands of aspen greater than 0.4 ha (1 acre), Biodiversit_y Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife Gull descriptions in Yf7)Ft1'PH.S report p. 152). Herbaceous Balds: Variable size patches of grass and fortis on shallow soils over bedrock. Old-growth/Mature forests: (Old-Srotwdi west of Cascade- crest) Stands of at least 2 tree species. forming a multi-lawered canopy with occasional small openings; Ni ith at least 20 trees/ba (8 trees/acre) > 81 em (32 in) dbh or> 200 wears of age. {Mature forests) Stands with average diameters exceeding 53 cm (21 in) dbh; cro'%i -ri corer may be less that 100°,a; crown cover may be less that 1001%,. decal _ decadence- numbers of snags. and quantity- of large downed material is generally less than that found in old-growth; 80 --200 years old nest of the Cascade crest. Oregon white Oak: Woodlands Stands of pure oak or oak/comfer associations where canopy coAerage of the oak- component is important (full descriptions in T-T7>FTVPH.S' report p. 158). -Riparian: The area adjacent to aquatic s}-stems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. _Westside Prairies: Herbaceous. ion-forested phant couununitics that can either take the form of a dry prairie or a iwt prairie (fill descriptions in ff-DFW PHS report p. 161). Inst.ream: The combination of phl sical. biological. and chemical processes and conditions that interact to provide functional life history requirements for mstreann fish and wildlife resources. _ Nearshore: Relatively {undisturbed nearshore habitats. These include Coastal Nearshore. Open Coast Nearshore. and Puget Sound Nearshore. (full descriptions c f habiluis urrd the definition of'relative4y undisturbed are in FPDFWreport: pp. 167-169 andglossan• in Appendix A). Caves: A naturally occurring cavity. recess, void. or system of interconnected passages under the earth in soils, rock. ice. or other geological formations and is large enough to contain a liumau. Cliffs: Chrater than 7.6 in (25 ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock rubble ranging in average size 0.15 - 2.0 in (0.5 - 6.5 ft). composed of basalt, and.esite. and/or sedimentary rock including riprap slides and mine tailings. Mm- be associated with cliffs. -Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of> > 1. cm (20 in) in western Washington and are > 2 m (6.5 ft) in height. Priority logs are> 30 cm (12 in) in diameter at the largest end. and > 6 m (20 ft) long. If ywetland has 3 or more priority habitats =-I points If wetland has 2 priority habitats = 3 points If `wetland has I priority habitat =1 point No habitats = 0 points Nore: All vegerated ii etlands are bu definition a priority habitat but are not included in this list. Neurbl= wetlands ar•e addressed in grresticm H 2.-1) Wetland Rating Form- ,vestern Washington 16 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 103 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Weiland name or nuniber A- H 2.4 Wetland Landscape (choose the one description of the landscape uroond the iretlond that best jin•i (seep. 84) There are at least 3 other wetlands within mile. and the connections bet-%veen them are relativelf- undisturbed (light grazing between wetlands OK. as is lake shore iiith some boating. but connections should NOT be bisected b_s- payed roads- fill, fields. or other development. points = 5 The wetland is Lake-fringe on a lake with little disturbance and there are 3.other lake-friu;e wetlands within !f2 (tile points = i There are at least 3 other wetlands xvitWn :4 oide_ BUT the connections between them are disturbed points = 3 The wetland is Lake-fringe on a lake with disturbance and there are 3 other lake-fringe wetland within %2 mile points = There is at least 1 wetland within 'h mile, points = 2 There are no wetlands (Within !V2 miie, points = 0 H 2. TOTAL Score - opportunity for providing habitat I - Add the scares.lforrt H2.1,H2. 2. H2.3. H2.4 TOTAL for H 1 from page 14 C Total Score for Habitat Functions - add the points for H .l. H 2 and record the result on i 1 l t k 1 Wethuid Rating Form- xxestern Washington 17 August 2004 version 2 Updated wide new WDFW definitions Oct. 2008 104 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetiand name or number CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Please determine if the ivetland greets the attributes described below and circle the appropriate answers and Category. Wetland Type Category C Ireclr p ff ant- criterir~ thzrx crpplr to rTre eilcrrrc/ C irrle the C'ategon° i+ lrert >he u rolrriate criteria are inel. SC 1.0 Estuarine wetlands (seep. 86) Does the wetland unit meet the following criteria for Estuarine wetlands? - The dominant water regime is tidal, - Vegetated, and - With a salinity greater than. 0.5 ppt. YES= Go to SC 1.1 NO SC 1.1 Is the wetland unit within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Cat. I Environmental, or Scientific Reserve design under WAC 332-30-151? YES = Category I NO 02 to SC 1.2 SC 11 Is the wetland unit at least 1 acre in size and meets at least two of the following three conditions? YES = CategoryI NO = CategoryH Cat. I - The wetland is relatively undisturbed (has no diking, ditching, filling, Cat. II cultivation, grazing, and has less than 10% cover of non-native plant species. If the non-native Spartinu spp. are the only species that cover more than 10% of the wetland, then the wetland should be given a dual Dual rating (UH). The area of Spartina would be rated a Category 11 while the rating relatively undisturbed upper marsh with native species would be a I/11 CategoryI. Do not, however, exclude the area of Spartina in determining the size-threshold of 1 acre. - At least 3/! of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un-mowed grassland. - The wetland has at least 2 of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Weda nd Rating Fofm- ivestern Washington 18 August 2004 version 2 Updated with new WDFW definitions Oct 2008 105 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Wetland name or number SC 2.0 Natural Heritage Wetlands (seep. 87) Natural Heritage wetlands have been identified by the Washington Natural Heritage Cat. I Program/DNR as either high quality undisturbed wetlands or wetlands that support state Threatened, Endangered, or Sensitive plant species. SC 2.1 Is the wetland unit being rated in a Section/Township/Range that contains a Natural . Heritage wetland? (this question is used to screen out most sites before you need to contact WNHPIDNR) S/T/R information from Appendix D _ or accessed Crom WNFIP/DNR web site YES - contact WNHP/DNR (see p. 79) and go to SC 2.2 NO SC 2.2 Has DNR identified the wetland as a high quality undisturbed wetland or as or as a site with state threatened. or endangered plant specie ? YES = Category I NO.' not a Heritage Wetland SC 3.0 Bogs flee p. 87) Does the wetland unit (or any part of the unit) Inee.t both the criteria. for soils and vegetation in bogs? Use the key below to identify if the ivedand is a bog If you answer yes you will still need to rate the wetland based tilt its functiorts. 1. Does the unit have organic soil hori.,xins (i.e: layers of organic soil), either pears or mucks, that compose 16 inches or more of the first 32 inches of the soil profile? (See Appendix field key to identify organic soils)? Yes - go to Q. 3 No - o to Q. 2 1 Does the unit have organic soils, either peats or mucks that are less than 16 inches deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on pond? Yes - go to Q. 3 No not a hog for purpose of rating 3. Does the unit have more than 700X cover of mosses at ground level, AND other plants, if present, consist of the "bog" species listed in. Table 3 as a significant component of the vegetation (more than 30% of the total shrub and herbaceous cover consists of species in Tab Yes - Is a bog for purpose of rating No - o to Q. 4 NOTE: If you are uncertain about the exten. o mosses in the understory you may substitute thatcriterion by measuring the pH of the water that seeps into a hole dug at least 16" deep. If the pH is less than 5.0 and the "bog" plant species in Table 3 are present, the wetland is a bog. 1. Is the unit forested 30% cover) with, sitka. spruce; subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Englemann's spruce, or western white pine, WTI'H any of the species (or combination of species) on the bog species plant list in Table 3 as a significant component of the ground cover 30% coverage of the total shrublherbaceous cover)? 2. YES= Category I NoI Is not a bog for purpose of rating Cat. I Wettwd Rating Form- western Washington 19 August 2004 version 2 Updated with new WDFW definitions Oct_ 2008 106 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number .rte SC 4.0 Forested Wetlands (seep. 90) Does the wetland unit have at least 1 acre of forest that meet one of these criteria for the Department of Fish and Wildlife's forests as priority habitats? If you answer yes you irill sll11 need to f'ade Me we'lland based on its finnumns. - Old-growth forests: (west of Cascade crest) Stands of at least two tree species, forming a niult.i-layered. canopy with occasional small openings; with at least 8 trees/acre (20 trees/hectare) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 inches (81 cm) or more. NOTE: The criterion for dbh is based on measurements for upland forests. Two-hundred year old trees in wetlands will often have a smaller dbh because their growth rates are often slower. The DFW criterion is and "OR" so old-growth forests do not necessarily have to have trees of this diameter. - Mature forests: (west of the Cascade Crest) Stands where the largest trees are 80 -200 years old OR have average diameters (dbh) exceeding 21 inches (53cm); crown cover may be less that 100%; decay, decadence; numbers of snags, and quantity of large downed material is generally less than that found in old-growth. YES= Categon- I NO not a forested NN,etluid with special characteristics Cat. I SC 5.0 Wetlands in Coastal Lagoons (seen 91) Does the wetland weet all of the following criteria of a wetland in a coastal lagoon? - The wetland lies in a depression adjacent to marine waters that Is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks - The lagoon in which the wetland is located contains surface water that is saline or brackish 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured ear the bottom) YES = Go to SC 5.1 NO7 not a wetland in a coastal lagoon SC 5.1 Does the wetland meets all of the following three conditions? - The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% covei of invasive plant species (see list of invasive species on p. 74), - At least 3, of the landward edge of the wetland has a 100 ft buffer of slinib, forest, or un-grazed or un-mowed grassland. Cat. I - The wetland is larger than 1/1 e ; 50 square feet) YES = Category I NO = ategory 11 Cat. 11 Wetland. Ratike Form- western Washington 20 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 107 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Wetland name or number SC 6.0 Interdunal Wetlands (seep. 93) Is the wetland unit west of the 1889 line (al called die Western Boundary of Upland Ownership or WBUO)? YES - go to SC 6.1 L'~ - not an interdunal wetland for rating If you answer yes you will torote the we&znd based an its functions. In practical -terms that means the following geographic areas: • Long Beach Peninsula- lands west of SR 103 • Grayland-Westport- lands west of SR 105 • Ocean Shores-Copalis- lands west of SR 115 and SR 109 SC 6.1 Is the wetland.one acre or larger, or is i7NO aic of wetlands that is once acre or larger? YES= Category H ( go to SC 6.2 Cat. II SC 6.2 Is the unit between 0.1 and 1. acre, or is it in a mosaic of wetlands that is between 0.1 and 1 acre? YES = Category III Cat. III Cory-,tiF ellfand bawl on Special clim-acteristies L hriose the "hzg`hesl." rating ifwetlancl folk intn several ccuegrones, and record an p t/A q~ f IfyOu:an;swered NO for all -typesenter Not A ircable on .1 l p, Wetl.md Rating Form - western Wastanglan 21 August 2004 version 2 Updated with new WDFW definitions Oct: 2008 108 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 This page left intentionally blank 109 CRITICAL AREA STUDY Keith Fabing, Inc. Green`River Community College/Trades Rezone/A UP - Aubum, Washington August 2010 Wetland name or number WETLAND RATING FORM - WESTERN WASIMGTON Version 2 - Updated July 2006 to increase accuracy and reproducibility among users Updated Oct 2008 with the new WDFW definitions for priority habitats Name of wetland (if known): L EA PA(L~, Date of site visit Rated by1"-T'~f2 1 N (r Trained by Ecology? YesNo4 Date of trainin r O SEC: 3_TWNSHP:,'~,h) RNGE: &E Is S/T/R in Appendix D? Yes No Map of wetland unit: Figure 4- Estimated size L, 3 1-7sa,-i:~- SUMMARY OF RATING Category based on FUNCTIONS provided by wetland I_ 1.1- 1114 IV Category I = Score >=70 Score for Water Quality Functions 1 Category, IT = Score 51-69 Score for Hydrologic Functions Category III =Score 30-50 Score for Habitat Functions Category IV = Score < 30 TOTAL score for Functions Category based on SPECIAL CHARACTERISTICS of wetland I~ II Does not Apply Final Category (choose the "highest" category from above) Summary of basic information about the wetland unit d HCM Glass Wetland Untt'has Slie ;A ~L=far! Characteristics. RatiugEstuarine Depressional Natural Heritage Wetland Riverine Bog Lake-fringe Mature Forest Slope Old Growdi Forest Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple HGM classes present F1 Wetland Rating Form - x,.estem Washington I August 2004 version 2 To be used with Ecology Publication 04-06-025 110 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Welland name or number Does the wetland unit being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. Check List for Wetlands. That `Mag Need Additi6nA Protection YE$ O (in addition #o the protectidli ewinme ded for its category) SPl Has the rretltricl unit been clocrrnueuted tis u habitul,for anT' Federtilli~ listed Threatened or Endangered aninud or-plant species- (TIE species)? For the purposes of this rating system, "documented" means the wetland is on the x appropriate state or federal database. ' SP2. Has the ,rerlund unit hear dacrrnxtuctl us habitat fir um State hsted Threatened or Endangered anipwl species? For the purposes of this rating system, "documented" means the wetland is on the appropriate state database. Note.- Wetlands with State listed plant species are categorized as Category I Natural Heritage Wetlands see p. 19 of data form). SP3. Does the wetland unit contain individuals of Priority species listen' by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To complete the next Hart of the data sheet you will need to determine the HydroQeomorphic Class of the wetland being rated The hydrogeomorphic classification groups wetlands into those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. Seep. 24 for more detailed instructions on classifying wetlands. Wetland kiting Form - a-estern Washin±trton ? August 2004 version 2 Updated with new WDFW definitions Oct_ 2008 111 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number Classification of Wetland Units in Western Washington If the hydrolugie criteria listed in each question do not apply to the entire unit tieing rated, you probably Iiaye.a unit with multiple IGM classes.-, Tac this,case;lde atify wbrch hydrologic eriteriia. in, q'nestious,1,-7 apply, and ga to. Question s 1. water levels in the entire unit usually controlled by tides (i.e. except during floods)? NO go to 2 YES - the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? TES Freshwater Tidal Fringe NO - Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Tringe it is rated as an Estuarine wetland. Wetlands that were called estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, die term "Estuarine" wetland is kept. Please note, however, that the characteristics that define Category I and H estuarine wetlands have changed (see p. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. dwater and surface water nuroff are NOT sources of water to the unit. NO go to 3 YES -The wetland class is Flats If your wetland can be classified as a "Flats" wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet both. of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) at least 20 acres (8 ha) in size; 0NO At least 30% of the open water area is deeper than 6.6 ft (2 m)? go to 4 YES - The wetland class is Lake-fringe (Lacustrine Fringe) 4. Does the entire wetland unit-meetall of the following criteria? The wetland is on a slope (slope can be very gradual), The water flows through the wetland in. one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually 3 ft dianrete nd less than 1, foot deep). NO - go to 5 YES- he wedand class is Slope Weiland Rating Forte - -tves6ern Washington 3 August 2004 version 2 Updated with new WDFW definitions Oct 2008 112 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number 5. Does the entire wetland unit meet all of the following criteria? The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river The overbank flooding occurs at least once every two years. NOTE. The riverine unit can contain depressions that are filled with water when the river is Trot, floocligg NO - go. to 6 YES - The wetland class is Riverine 6. Is the entire wetland unit: in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year. This means that any outlet, if present, is higher than the interior- of the wetland. NO - go to 7 YES - The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding. The unit does not pond. surface water more than. a. few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. NO - go to 8 YES - The wetland class is Depressional S. Your wetland unit seems to be difficult to classify and probably contains several different HGM clases. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within your wetland. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. F111:IC lcrsss iritTri~r tlic iitliiriYl rtrrr heig rated 0 ass to :I Tse rrrRcrltrr~'' Slope + Riverie Riverme Slope + Depressional Depressional Slope + Lake-fringe Lake-fringe Depressional +Riverine along stream v.Itliin boundary Depressional Depressional + Lake-fringe Depressional Salt Water Tidal Fringe and any other class of freshwater Treat as ESTUARINE under wetland wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating Form - n-estern Washington 4 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 113 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number S SIope Wetlands Points WATER QUALITY FUNMONS :-..Indicators thatthe wetland tm t functions tQ jxr bosj Improve water uali S S 1. Does the wetland unit have the potential to improve water quality? (see p:6.1) S S IA Characteristics of average slope of unit: Slope is 1% or less (it I %slolx has u 1 1bot verricul chop in elevation lbr even I 001i horcontal distance) points = 3 Slope is 1% - 2% L ~riC~- C • 1 /~c;r. OtwP points = 2 Slope is 2% - 5% -^-lop ::H ts- ('03 o ar t~ r`~` points = 1 Slope is treater than i14, on-Mra • l 44 points = 0 S S 1.2 The soil 2 inches befogs die surface (or duff laver) is clad or organic (use NRCS de ' •J YES points NO = 0 points S S 1., naractetistics of the vegetation in the wetland that trap sediments and pollutants: Figure (hoose the points appropriate fin- the description that hest tits the vegetation in the owlund. Dense vegetation means )-u haiz: n'ouhle seeii gthe soil sur fcuce ( cover), and uncut means not ,ra ed or moived and plants are higher than 6 inches. Dense, uncut. herbaceous vegetation > 90% of the wetland area points = 6 Dense, uncut. herbaceous vegetation > 12 of area points = 3 Dense_ s1 oody.' vegetation > 5': of area points = 2 Dense. uncut. herbaceous vegetation > 114 of area points = 1 Does not meet any of the criteria above for vegetation points = 0 Aerial photo or map with ve etation of ons tl S Total for S 1 Add the points in the boxes above 1- - S S 2. Does the wetland unit have the opportunity, to improve water quality? (seep.67) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce seater qualih- in streams. takes or groundwater do«ngradient from the wetland. Note which ofrhefi)llowing conditions provide the sources ofpolhaants. A unit may have pollutants con inrg front several sources, bur aril single source woidd yua4ly cis opportunitn:, - Grazing in the wetland or within 150ft - Untreated stormwater discharges to wetland - Tilled fields. logging. or orchards within 150 feet of wetland - Residential. urban areas. or golf courses are within 150 ft upslope of ssvetland multiplier - Other YES multiplier is 2 NO multiplier is I S TOTAL -Water Quality Functions Multiply the score from S1 by S2 I AM score to table on p. 1 Comments V.,etlaad Ratio= Form - ssestem Waslungton 11 August 2004 version 2 Updated with new WDF'W definitions Oct. 2008 114 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number MU, Slope ?Vetlands Po RYDROJ-O(RCFIIN MONS Indicators teat the Wetland 1Mrt ftrizstious to ptr bail reduce-fldodin~ Wi4stream;erosion, S 3. Does the wetland unit have the potential to reduce flooding and stream (see ► 68) erosion? S S 3.1 Characteristics of vegetation that reduce the x-elocith- of surface flows during storms. Choose the points appropriate fi» , the description that best fit conditions in the wetland. (.stenis q plants should he thick enouk=h (usually I c~Ii7), Or fl~Bt1.SC' CnE)ttah, t0 !Y lTlail7 erect during sr~1 fare /Im+s) Dense. uncut. rigid vegetation covers > 90% of the area of the wetland, points = 6 Dense_ uncut, rigid vegetation > 1/2 area of wetland points = 3 Dense. uncut, rigid vegetation > 1/4 area points = I More than 1/4- of area is grazed. iuowed. tilled or vegetation is not rigid points = S S 3.2 Characteristics of slope wetland that holds back smallamounts of flood flons: The slope wetland has small surface depressions that can retain water over at least 10°) of its area. YES points = 2 NO nits = 0 S Add the points in the boxes above 1-~ t S S .Does the we#land have the opportunity to reduce flooding and erosion:' seep. 76)~ Is the wetland in a landscape position where the reduction in water velocity- it provides helps protect downstream property and aquatic resources from flooding or excessive and/or erosive flows? Note which of the. fidlozring conditions apple. Wetland has surface runoff that drains to a river or stream that has flooding problems - N)er multiplier (Answer NO if the major source of water is controlled by a reservoir (e.g. wetland is a seep r the downstream side of a dam) YES ulti tier is 2 NO multiplier is 1 S TOTAL - Hydrologic Functions Multiply the score froth S 3 by S 4 Add score to table oti p. 1 Comments Wetland. Rating Form - western Washington 12 August 2004 version 2 Updated with new VJDFW definitions Oct. 2008 ` `es did name or number These questions ttppCy ttl.tv('tl(ItBdv oftill UGMehjv,vev. Paints: fcd I" F 1-L ITAT FUNCTIONS - I idtcators:that unit functions to provide importanthabitat H I. Does the wetland unit have the potential to provide habitat for many species? H I - I Vegetation structure (.seep. 72) Figure _ C f7cclc the apes gfvegeturion classes present (us de .fined hp (i>trcrrelin)- a'i=e threshold Jhr each class is !v acre or ntore than I U%of the area ifinut is smaller thorn 2_5 acres. _X,_Aquatie bed Emergent plants Scrub/shrub (areas «here shrubs have >30% . cover) Forested (areas inhere trees have >30" o cover) I f the unit has a frnxmecl class check Id The forested class has 3 out of a strata (c mopy- sub-canopy. shrubs. herbaceous. moss/ground-corer) that each cover 20% As ithin the forested pot} goo Add the number qJ iegerutinn strurnu es that quali fi . IJ i ou have: 4 structures or more points = 4 Map of Cowardin vegetation classes 3 Structures points = 2 j 2 strictures points = 1 I structure points = 0 H 1.2. Hvdroperiods (seep. 7_3) Figure - j Cli'cl the r11xs• of hater regimes (ht chztpericxfr) present urithin the iretland The darer regime hots to cover more nc(117 I (M of the 11et111nd ar f,1101' ro count. (se(' teyt./ol- descriptions ofhydroperiods) Permanenth flooded or inundated 4 or more types present points = 3 r Seasonalk- flooded or inundated 3 types present points = 2 occasionA, flooded or inundated 2 hp's present point = I ' Saturated 0111v h type present points = 0 _ Permanently flooring stream or river in. or adjacent to, the wetland _ Seasonally t3oAving stream in, or adjacent to. the wetland Lake-hingeit-vtland =2 points Freshwater tidal xdltind = 2 points Map of hydropedods 111.3. Richness of Plant Species (seep. 71) Count the number of plant species in the wetland that cover at least 10 W. )chi fifer et7r puk hes of the scene species can be combined to meet the si.e threshold) YOU do not hcns; to name the species. I)o not include Eurasian Milfoil, teed cunar~grass. purple loosestrlfe. ('anadiun Thistle Ifv_-ou counted: > 19 species points = 2 List species.below if t°ou wonr to. > - 19 species points = t < > species points = 0 j Total for page u7d Rating Form - Nvestern Washington August 2004 w ):n 2 Updated with new WDFW definitions Oct 2008 i 116 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Wetland name or number H 1.4. Interspersion of habitats (seep. 76) Figure_ Decide from the diagrams below whether interspersion. between Co\vardin vegetation classes (described in H 1. 1). or the classes and tmvegetated areas (can include open water or mudflats) is high, medium. low. or none. CD None = 0 points Low = 1 point Moderate = 2 points ^ [riparian braided channels] High = 3 points NOTE: If srou have four or more classes or three s egetation classes and open water the rating is always "high". Use map of Cowardin vegetation classes H 1.5. Special Habitat Features: (seep. 77) Check the habiaar feanu•e,s thut are present in the rretlwrd The number of checks- is the number of poinr.c i nix put into the next calumet- Largc. downed_ woody- debris within the wedand (?-tin. diameter and'6 ft long). -XIStanding snags (diameter at the bottom > 4 inches) in the wetland Undercut banks are present for at least 6.6 ft (2m) and/or overhanging vegetation extends at least 3.31t (lm) over a stream (or ditch) in, or contiguous with the unit; for at least 331t r~ (10m) Stable steep banks of fine material .drat might be used by beaver or muskrat for denning (>30degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least 1/4 acre of thin-stemmed persistent vegetation or woody branches are present in areas that are permanently or seasonally inundated. (structures for egg-laying by amphibians) Invasive plants cover less than 25% of the wetland area in each stratum of plants NOTE: The 20%stated in early printings of the manual on page 78 is an error. H 1. TOTAL Score - potential for providing habitat Add the scores from H1.1, H1.2, HL 3, H1.4, HI.5 Comments Wetand Rating Form- western Waslvnglon 14 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 117 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number H 2. Does the wetland unit have the opportunity to provide habitat for many species? H 2.1 Buffers (seen 80) Figure _ 0ioase the description that best represents condition of hrrfrer q/ 'wetland unit. The hitihesr scoring criterion that applies to the iredand is to be used in the rating. See text for definition qf' "undisturbed. " - 100 in (330ft) of relatively undisturbed vegetated areas. rock- areas. or open water >95% of circumference. No strictures are within the undisturbed part of buffer. (relative(} undisturbed also means no-grazing. no landscapin& no daily human use) Points = 5 - 100 in (330.ft) of relatively undistrbed vegetated areas. rocky areas. or open ater > 50% circumference. Points = 4 - 50 in (170ft) of relatively undisturbed vegetated areas, rock, areas. or open Nyater >95% circumference. Points = 4 - 100 in (3308) ofrelativety undisturbed vegetated areas. rock areas. or open water> 25°,x„ circumference.. Points = 3 - 50 in (170ft) of relatively undisturbed vegetated areas. rock- areas. or open water for > 50% circumference. Points = 3 If buffer does not meet any of the criteria above - No pared areas (except paved trails) or buildings within 25 ►n (80ft) of wetland > 95% circumference. Light to moderate grazing, or lawns are OIL. Points = 2 X No pared areas or buildings within 50m of wetland for >50% circumference. Light to moderate grazing, or lawns are OK. Points = 2 - Heavy grazing in buffer. Points =1 Vegetated buffers are <2m wvide (6,6fl) for more than 95% of the circumference (e.g. tilled fields. paving. basalt bedrock extend to edge of -wetland Points = 0. - Buffer does not meet an-,- of flue criteria above. Points = I Aerial photo showing buffers H 2.2 Corridors and Connections (seen 81) H 221 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft ivide. has at least 30%o coyer of shrubs. forest or native undisturbed prairie. that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size'? Wann in riparian corridors, hecwl.y used gravel roads. paved roads. are considered breaks in the corridc YES = 4 points (go to H 2.3 j NO go to H 2.2.2 H 2.2.2 Is the wetland pail of a relatively undisturbed an roken vegetated corridor (either riparian or upland) that is at least 501 xvide. has at least 30% cover of shrubs or forest, and connects to estuaries. other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake-fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (;o to H 23) rNO = 2.2.3 H 223 Is the wetland: within 5 mi (8km) of a brackish or salt water estuan- O within 3 mi of a large field or Pasture (>40 acres) OR 'T"7)'; with i of a e greater than 20 acres" S 1 point NO = 0 points Total for page Wetland Rating Form - western Washington 15 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 118 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community CollegelTrades Rezone/AUP - Auburn, Washington August 2010 Wed and name or number H 2.3 Near or adiacent to other priority habitats listed b.- WDFW (see new and complete descriptions of WDFW priority habitats, and the counties in which the]- can he. found, ill the PHS report h[ar . A cOv. F~ t.htnn ) Which of the folio-wing priority- habitats are within 330ft (100m) of the wetland unit? NOTE: the connections do not have to be re=laltveh undisturbed Aspen Stands: Pure or mixed stands of aspen greater than 0.1 ha (1 acre). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (Jidl descriptions in WDFH'PH.S'report p. 1-52). Herbaceous Balds: Variable size patches of grass and. forbs on shallow soils over bedrock. Old-growth/Matttre forests: (Old-grow-di ivest of Cascade crest) Stands of at least 2 tree species, forming a multi-layered canopy with occasional small openings: with at least 20 trees/ha (8 trees/acre) > 8.1 cin (32 in) dbli or> 200 rears of age. (Mature forests) Stands with average diameters exceeding 53 cm (21 in) dbh: crown cover may be less that 100%: crown cover rnav be less that 100°%0_ decay. decadence. numbers of snags, and quantit of large downed material is generally less than that found in old-growth: 80 - 200 rears old west of the Cascade crest.. Oregon white Oak: Woodlands Stands of pure oak or oak/conifer associations "dire canopy coverage of the oak component is impoi#ant (dill descriptions in WDF-W PM report p. lily Riparian: The area adjacent to aquatic systems with flowing -water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Westside Prairies: Herbaceous, non-forrsted plant communities drat can either take the form of a dry prairie or a wet prairie (fidl descriptions in FVDFWPHS' r•eporr p. 161). Instream: The combination of physical. biological. and chemical processes and. conditions that interact to provide functional life history- requirements for instreatn fish and wildlife resources. Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore. Open Coast Nearshore. and Puget. Sound Nearshore_ (JhJl descr•rptions of habitats and the definition of 'relariveln- undisturbed are in RDFW report. pp. 167-169 and g4asson in Appendix A). Caves: A naturally occurring cavity. recess. void, or system of interconnected passages under the earth in soils. rock. ice. or other geological formations and is large enough to contain a human. Cliffs: Greater than 7.6 m (.25 ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock nibble ranging in average size 0.15 - 2.0 nn (0.5 - 6,5 ft). composed of basalt. andesite, and/or sedimentary rock. including riprap slides and mine tailings- May be associated with cliffs. Snags and Logs: Trees are considered snags .if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife Priority snags have a diameter at breast height of> 51 cm (20 in) in western Washington and are> 2 in (6.5 ft) in height. Priority logs are > 30 cm (12 in) in diameter at the largest end. and > 6 in (20 fl) long. If wetland has 3 or ruore priority habitats = 4 points If wetland has 2 priority habitats = 3 points If wetland has 1 priority habitat 1 point.- ` No habitats = 0 points Note: All vegetated u•erlancls are b>> definition a priorirv hcrbirat but are nor included in this list Necu•br x•etlonds are addressed in question H 2.4) Wetland Ratins Form - i%cstern Washington 16 August 2004 version 2 Updated with new WDFW definitions Oct 2008 119 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 10001` Wetland name or number H 2.=4 Wetland Landscape (Choose the one eleserij)lion orthe landscape uround the hretland that hest /its) (seep. 84) There are at least 3 other wetlands rtitiin'lz mile- and the connections between diem are relatively undisturbed {light grazing between htietlands OK. as is lake shore hvith some boating- but connections should NOT be bisected b- paved roads. fill. fields, or other development- points = 5 The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands A ithin'.! mile points= There are at least 3 other wetlands A--idun !6 mile. BUT the connections between them are disturbed points = 3 The wetland is Lake-fringe on a lake with disturbance and there are , other lake-fiinge Ni etlaud within '6 mile points = 3 There is at least l hvedand nithin',•4 mile. points = 2 There are no wetlands -within !Ji mile. 11 points = 0 H 2. TOTAL Score - opportunity for providing habitat 1 1 Add the scurex ftom H2. L H2 1. H2.3. H2.4 1 1 TOTAL for H I from page 14 / Total Score for Habitat Functions - add the points for H 1, H. 2 and record the result on f s p. 1 Wetland Rating Form - xcestern Washington 17 August 2004 version 2 Updated with new WDFW definitions OcL 2008 120 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or number CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Please determine if the wetland meef the attributes described below and circle the appropriate answers and Category. Wetland Type Category (beck cuff anY criteria that apph to the iretlarrd. Ogle the Cat or y irhen the aly ol2 iate criteria are nret_ SC 1.0 Estuarine wetlands (seep. 861 Does the wetland unit meet the following criteria for Estuarine wetlands? - The dominant water regime is tidal, Vegetated, and - With a salinity greater than 0.5 ppt. r YES= Go to SC 1.1 NO SC 1.1 Is the wetland unit within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Cat. I Environmental, or Scientific Reserve designated ider WAC 332-30-151? YES = Category I NO o to SC 1.2 SC 1.2 Is the wetland unit at least 1 acre in size and meets at least two of the following three conditions? YES = Category I NO = Category 11 Cat. I - The wetland is relatively undisturbed (has no dikint, ditclung, tilling, Cat. II cultivation, grazing, and has less than 10% cover of non-native plant species. If the non-native SpatWna spp. are the only species that cover more than 10% of the wetland, then the wetland should be given a dual Dual rating (UH). The area of Spartina would be rated a Category H while the rating relatively undisturbed upper marsh- with native species would be a UII Category I. Do not, however, exclude the area of Spartina in deters lining the size threshold of 1 acre- - At Least 3!a of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un-mowed grassland. - The wetland has at least 2 of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands- Wethuid Rating Form - western Washington is August 2004 version 2 Updated with new WDFW definitions Oct. 2008 121 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Vet.land name or number SC 2.0 Natural Heritage Wetlands (seep. 87) Natural Heritage wetlands have been identified by the Washington Natural Heritage Cat. I Program/DNR as either high quality undisturbed wetlands or wetlands that support state Threatened, Endangered, or Sensitive plant species. SC 2.1 Is the wetland unit being rated in a Section/ Township/Range that contains a Natural Heritage wetland? (this question is used to screen out most sites be fore you need to contact WNHPIDN1Z) S/T/R information from Appendix D - or accessed from WNIIP/DNR web site '2( YES - contact WNHP/DNR (see p. 79) and go to SC 2.2 NO SC 2.2 Has DNR identified the wetland as a high quality undisturbed wetland or as or as a site with state threatened or endangered plant species? YES = Category I NO not a Heritage Wetland SC 3.0 Bogs (seep. 87) Does the wetland unit (or any part of the unit) ineet both the criteria for sails acid vegetation in bogs? Use the key below to identi, if the wetland is a bog. If you answer yes you u ill still need to rate the wetland based on its functions. I. Does the unit have organic soil horizons (i.e. layers of organic soil), either peats or mucks, that compose 16 inches or more of the first 32 inches of the soil profile? (See Appendix B r afield key to identify organic soils)? Yes - ^ go to Q. 3 No go to Q. 2 2. Does the unit have organic so s, either pears or mucks that are less than 16 inches deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating onr pond? Yes - go to Q. 3 No - s n It a bog for purpose of rating 3. Does the unit have more than 70% cover of mosses at ground level, AND other plants, if present, consist of the "bog" species listed in Table 3 as a significant component of the vegetation (more than 30% of the total shrub and herbaceous cover consists of species in Table)? Yes - Is a bog for purpose of rating No) go to Q. 4 NOTE: If you are uncertain about the extent of mosses in the understory you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16" deep. If the pH is less than 5.0 and the "bog" plant species in Table 3 are present, the wetland is a bog. 1. Is the unit forested 30% cover) with sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Englemann's spruce, or western white pine, WITH any of the species (or combination of species) on the bog species plant list in Table 3 as a significant component of the ground cover 30% coverage of the total shrub.4ierbaceous cover)? 2. YES= Category I Nor~V Is not a bog for purpose of rating Cat. I Wetland. Rating Foam - western Washington 19 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 122 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 Wetland name or rnanber SC 4.0 Forested Wetlands (veep. 90) Does the wetland unit have at least 1 acre of forest that meet one of these criteria for the Department of Fish and Wildlife's forests as priority habitats? If you answer yes -otr will still need to rate the wetland based on its,fiurctions. - Old-growth forests: (west of Cascade crest) Stands of at least two tree species. forming a multi-layered canopy with occasional small openings; with at least 8 trees/acre (20 trees/hectare) that are at Ieast 200 years of age OR have a diameter at breast height (dbh) of 32 inches (81. cm) or more. NOTE: The criterion for dbh is based on measurements for upland forests. Two-hundred year old trees in wetlands will often have a smaller dbh because their growth rates are often slower. The DFW criterion is and "OR" so old-growth forests do not necessarily have to have trees of this diameter. - Mature forests: (west of the Cascade Crest) Stands where the largest trees are 80 - 200 years old OR. have average diameters (dbh) exceeding 21 inches (53cm); crown cover may be less that 1001/o; decay, decadence, numbers of snags, and quanti ty of large downed material is generally less than that found in old-growth. Cat. I YES = Categon- I NO not a forested wetland ivith special characteristics SC 5.0 Wetlands in Coastal Lagoons (seep. 91) Does the wetland meet all of the following criteria of a Nvetland in a coastal lagoon? - The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks - The lagoon in which the wetland is located contains surface water that is saline or brackish 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) YES = Go to SC 5.1 NO_ not a wetland in a coastal lagoon SC 5.1 Does the wetland meets all of the following three conditions? - The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of invasive plant species (see list of invasive species on p. 74). - At least 3/4 of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or sun nnowed grassland. Cat -1 - The wetland is larger than 1/10 acre (4350 square feet) YES = Category I. NO Category 11 Cat. II RVetland Rating Form -western Washington 20 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 123 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/A UP - Auburn, Washington August 2010 Wetland name or number SC 6.0 Interdunal Wetlands (seep. 93) Is the wetland unit west of the 1889 line (also called the Westem Boundary of Upland Ownership or WBUO)? YES - go to SC 6.1 NO Fnot an interdtrnal wetland for rating If you answer yes you wiU stiffueed to rate the wetland based on its functions. In practical terms that means the following geographic areas: • Long Beach Peninsula- lands west of SR 103 • Grayland-Westport- lands west of SR 105 • Ocean Shores-Copalis- lands west of SR 115 and SR 109 SC 6.1 Is the wetland one acre or larger, or is it in ios c of wetlands that is once acre or larger? YES = Category II NO -''go to SC 6.2 Cat. II SC 6.2 Is the unit between 0.1 and 1 acre, or is it'in "a mosaic of wetlands that is between 0.1 and I acre? YES = Category III Cat. III CateaoIY bf wetland based onpectiti Char acte.cist~ics, Choose the `highest" rating •if wetldnd falls into several categories, and reco, orr If you answered NO for all.` es enter" NotAp° linable" on p 1 j Wetland. Rating Form - ivestern Washington 21 August 2004 version 2 Updated with new WDFW definitions Od. 2008 124 CRITICAL AREA STUDY Keith Fabing, Inc. Green River Community College/Trades Rezone/AUP - Auburn, Washington August 2010 0 Preliminary Stor-rn Drainage Report for Green River Co munity College TRADES-.. BVILDIlNG RECEIVED SEP 13 2010 Prepared for CITY OF AUBURN PERMIT CENTER S.M. Stemper Architects August 2010 728 134`h Street. SW, `Suite 200 Everett,"WA 98204-5322 www.reidmiddleton.com Ph. (425) 741-3800 Fax (425) 741-3900 File No. 212010.005 Preliminary Storm Drainage Report for Green River Community College Trades Building Prepared for S.M. Stemper Architects August 2010 The engineering material and data contained in this report were prepared under the supervision and direction of the undersigned, whose seal as a registered professional engineer is affixed below. N D vQ 4F wAS0 om ~ z -n oc 0~ F~ 33728 / 0'- ~ S T aC~ ss/oNAt ti Julian L. Dodge, P.E. Senior Engineer 728 134th Street SW, Suite 200 Everett, WA 98204 425-741-3800 (Fax 425-741-3900) File No. 212010.005 Green River Community College i Au st 2010 Trades Building • ' UH4' Preliminary Storm Drainage Report Table of Contents 1. PROJECT OVERVIEW ........................................................................................................................................1 INTRODUCTION ..........................................................................................................................................................1 PROJECT LOCATION I EXISTING CONDITIONS ..............................................................................................................................................1 DEVELOPED CONDITIONS ..........................................................................................................................................2 2. OFF-SITE ANALYSIS ...........................................................................................................................................3 UPSTREAM TRIBUTARY AREAS .................................................................................................................................3 DOWNSTREAM INVENTORY .......................................................................................................................................4 3. FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN ................................5 DESIGN CRITERIA ......................................................................................................................................................5 CONVEYANCE DESIGN ...............................................................................................................................................6 DETENTION DESIGN ...................................................................................................................................................6 WATER QUALITY DESIGN ..........................................................................................................................................7 SUMMARY OF DESIGN PARAMETERS & RESULTS ......................................................................................................7 PROJECT SITE REQUIREMENTS ...................................................................................................................................7 4. EROSION AND SEDIMENTATION ANALYSIS AND DESIGN ....................................................................8 5. REQUIRED PERMITS OR APPROVALS .........................................................................................................8 APPENDIX A BASIN MAPS APPENDIX B DOWNSTREAM MAPS APPENDIX C WWHM DETENTION CALCULATIONS APPENDIX D PIPE SIZING AND BACKWATER CALCULATIONS Green River Community College ii August 2010 Trades Building ' + + ! + Preliminary Storm Drainage Report 1. Project Overview Introduction This report details the preliminary storm drainage design for the Trades Building project near the Green River Community College (GRCC). The project improvements include the construction of two buildings, adjacent paved parking, and pedestrian walkways. Additional improvements include landscaping, underground utilities, and stormwater conveyance and detention systems. Project Location The project is located in the city of Auburn, Washington, in a portion of the Northwest Quarter of Section 16, Township 21 North, Range 5 East (see Figure 1, Vicinity Map). The project area currently resides within Lea Hill Park, just north of SE 3201h Street and the main GRCC campus and west of 124`h Avenue NE. Existing Conditions The 8.7-acre Lea Hill Park property is composed of two grass baseball fields, a paved tennis court in the northeast corner, a gravel parking area in the southwest corner, and an existing wetland in the southeast corner of the site. The eastern portion of the site, between the tennis court and wetland, will be occupied with a proposed detention pond and access road as part of the 124`h Avenue Improvements project. The existing playground equipment and utilities will be removed to accommodate this detention pond. The areas along the perimeter of the baseball fields, wetland, and property boundaries are composed of second-growth trees and underbrush. The site generally slopes to the east and south. Along the western edge of the site, the ground slopes approximately 20 percent to the east. The majority of the site slopes approximately 2 percent to the east, while the eastern edge of the site slopes approximately 3 percent to the south. According to the project geotechnical report, prepared by GeoEngineers and dated June 3, 2010, the soil on site consists of thin fill materials overlying medium dense ablation till. Dense to very dense lodgement till deposits exist at depths below the ablation till. The perched groundwater table is approximately 6 to 8 feet below the ground surface. The majority of site runoff, generated from rainfall on the existing surface, drains to the existing wetland by subsurface and surface flow. Runoff along the southern edge of the site drains to an adjacent roadside ditch that releases at the southern end of the wetland. An existing 24-inch culvert crosses through the site, connecting an existing wetland just north of the site to the existing wetland in the southeast corner of the site. Runoff from the wetland continues south through the main campus drainage system before eventually reaching the Green River. There are no existing detention or water quality facilities on the site. The proposed detention pond mentioned above will be constructed during the summer of 2010 for the 124`h Avenue Improvements project only. Green River Community College 1 Au st 2010 Trades Building Preliminary Storm Drainage Report _~1i CRI-14 RIMER ITY i WIN- 3 Fi qtr . • i Project Et Address: 12401. SSE 32,01h Sty= eet Auburn, E].. 198098 Figure 1. Vicinity Map. Developed Conditions The project will include the construction of two buildings totaling approximately 65,000 square feet and approximately 4.8 acres of adjacent paved parking and pedestrian walkways. Underground water, sewer, and power will be installed to provide service to the buildings. The existing structures associated with the ball fields will be demolished and removed to facilitate the new construction. Runoff generated from rainfall on both proposed impervious and landscaping surfaces will create larger flows compared to rainfall impacting the existing surfaces. The City of Auburn (COA) drainage code requires proposed development or redevelopment projects to provide a now Green River Community College 2 August 2010 Trades Building Preliminary Storm Drainage Report control system to reduce the impacts of stormwater runoff from increased impervious surfaces and land cover conversions. A flow control system is needed to protect downstream stream channels and fish and wildlife habitat from upstream impacts. The COA drainage code provides alternatives to control the increased runoff, such as detention and infiltration. Infiltration includes the absorption of stormwater runoff through the underlying permeable soils. Infiltration practices are not feasible for this project site because the low permeability capacity of the existing till soils severely reduces the flow of water through the soil layer. Detention involves the capture and holding of runoff in a large basin and then releasing it at approved discharge rates to reduce downstream impacts. According to the COA, stormwater discharges shall match developed discharge durations to predeveloped durations for the range of predeveloped discharge rates from 50 percent of the 2 -year peak flow up to the 100 year peak flow. The predeveloped condition to be matched shall be forested land cover. This results in runoff discharging to the on-site wetland at a slower rate than currently exists, meaning no adverse impacts to the downstream system. Detention for site runoff will be controlled by an underground storage facility, such as the StormTecho chamber system. Site runoff will be collected and conveyed to the underground detention system by surface flow to a series of catch basins and storm pipe. Runoff from building roof areas will be collected and conveyed to the detention system. Approximately 38 percent of the site runoff volume will be detained by a remote detention facility located on the GRCC campus. Additional storm pipe and catch basins will be installed to collect and convey on-site runoff to the remote detention facility. The combination of increased impervious surfacing, runoff, and vehicular traffic results in additional pollutants, such as oil, grease, and debris, from potentially leaving the site. Runoff treatment is required for development projects to reduce pollutant loads and concentrations in stormwater runoff so that beneficial uses of receiving waters are maintained and restored. Water quality or stormwater treatment will be provided by a media filtration vault downstream of the on-site detention system. Media filtration units use manufactured media to chemically and physically filter pollutants from the incoming stormwater runoff. The residual pollutants are removed from the units during routine maintenance operations. The media filter units must be approved by the Department of Ecology (DOE) to provide basic water quality treatment. After discharging from the media filtration vault, storm runoff will then connect to an existing catch basin that is part of the existing 24-inch pipe that crosses through the site and discharges to the on-site wetland. A portion of the existing 24-inch pipe will be rerouted around the eastern side of the parking area to accommodate the construction of the new building. 2. Off-Site Analysis Upstream Tributary Areas There is an area of tributary runoff near the northwest corner of the site that enters the site through surface flow. The majority of the upstream tributary area is composed of trees, underbrush, and grasses, so there should be minimal runoff generated and flowing to the site. Green River Community College 3 Au st 2010 Trades Building , m Preliminary Storm Drainage Report The majority of tributary runoff to the north drains to an existing wetland system that terminates near the north property line and the existing 24-inch pipe. Runoff is then conveyed through the site to the existing wetland in the south portion of the site. Downstream Inventory Information about the downstream conveyance system, described below and illustrated in Figures 3 and 4 in Appendix B, was gathered during several site visits and from available topographic survey information. Storm drainage runoff from the proposed site improvements flows to the existing wetland that drains to the south. The conveyance system stretches south through the campus to a gravel and vegetated channel on the south side of the parking lot (Location I), in a natural stormwater retention area. At this location, it converges with a conveyance system from another part of the campus before continuing south to the Green River. The steps below describe the flow from the existing wetland, north of SE 320`h Street in Lea Hill Park, to Location I: 1. Runoff from the existing wetland flows south to a 24-inch concrete pipe that runs under SE 320`h Street (Location A). 2. Runoff is conveyed through 60 lineal feet of 24-inch concrete pipe to a storm manhole before releasing to a drainage swale through 16 feet of 24-inch concrete pipe (Location B). 3. Flow continues south within a drainage swale for approximately 115 feet before discharging into another 24-inch concrete culvert (Location Q. 4. Runoff flow continues south between the buildings of the Trades and Industry (T & I) Complex for approximately 320 feet before discharging to a storm manhole. The conveyance system receives runoff from the buildings in the T & I Complex and the Humanities and Social Science Complex. The conveyance system continues for another 110 feet before releasing into a vegetated channel through a 24-inch concrete pipe (Location D). 5. The vegetated channel extends for approximately 250 feet to another concrete culvert (Location E). The channel receives additional runoff from the Lindbloom Center and Administration Building areas. 6. The flow is conveyed through 74 feet of 18-inch-diameter concrete pipe to an outfall (Location F) in a vegetated drainage area. 7. The flow is conveyed south through about 30 feet of the vegetated drainage area to an 18-inch-diameter HDPE culvert pipe (Location G). Green River Community College 4 Au st 2010 Trades Building . , I Vi Fri 1111 M. M3 Preliminary Storm Drainage Report 8. The flow is conveyed through 20 feet of 18-inch-diameter HDPE culvert pipe to a vegetated drainage area in a natural stormwater retention area. This vegetated drainage area conveys stormwater about 320 feet into Gator Pond, which is about 130 feet in length. 9. The outlet pipes from Gator Pond are two 21-foot-long, 12-inch PVC pipes (Location H) set a few feet higher than the bottom of Gator Pond. 10. The stormwater that overflows from Gator Pond flows into another vegetated drainage area for about 300 feet, to the point where the south conveyance system joins the east conveyance system (Location I). From the point where the south and east conveyance systems join, stormwater flows approximately 160 feet through the gravel and vegetated area. A 24-inch-diameter HDPE pipe (Location J) directs the flow under a trail to.another vegetated area with organic soils in a natural stormwater retention area. This 24-inch-diameter culvert (Location J) is about 1,400 feet (over a '/4 mile) downstream of the project site from both the south and east drainage systems. From Location J, the stormwater flows approximately 600 feet through the natural vegetated area. A 24-inch-diameter corrugated metal pipe conveys flow underneath a trail into a wooded area with a 6- to 8-foot-wide drainage channel lined with gravel, boulders, and vegetation. The stormwater flows approximately 2,300 feet (Location K), through the channel lined with gravel, boulders, and vegetation, to the Green River. There is a log weir with a notch about 400 feet upstream of the Green River side channel. About 200 feet north of the Green River side channel, the water spreads out into the lowlands, with multiple channels that flow into the Green River side channel. No evidence of significant erosion along the flow paths was observed during the site visit. 3. Flow Control and Water Quality Facility Analysis and Design Design Criteria • City of Auburn (COA), Surface Water Management Manual (2009) • City of Auburn (COA), Construction Standards Manual (2009) Stormwater Detention Criteria Design detention using Western Washington Hydraulic Model (WWHM) continuous simulation program and ensure the detention passes the program's testing routine. The testing routine includes matching developed discharge durations to predeveloped durations for the range of predeveloped discharge rates from 50 percent of the 2-year peak flow up to the 100-year peak flow. Green River Community College 5 Au st 2010 Trades Building = l Preliminary Storm Drainage Report Predeveloped condition defined as: Till soils, flat terrain, and Forested condition. Developed condition defined as: Roads-flat terrain and Roof tops-flat terrain. Minimum Bottom Orifice diameter: 0.5 inch Water Quality Treatment • Treat 2-year release rate from detention system. • Bypass flows greater than the required treatment rate. Conveyance Design The proposed conveyance systems are designed to comply with the COA Surface Water Management Manual. The systems are designed to convey the peak 25-year post-development storm event. Runoff peak flows are calculated using the Rational Method. Pipes are sized using Manning's Equation to ensure the pipes have the capacity to convey the peak flows of the 25-year storm event. The system is evaluated and sized to prevent flooding during the 100-year storm event. A spreadsheet showing pipe size calculations will be inserted in Appendix D at a later date. Detention Design Stormwater detention for the site is provided by an underground storage facility, such as the StormTech® chambers system. The COA accepts the use of this product on private developments. Maintenance for the system is performed within an `Isolator Row' that receives the initial flow of pollutant-laden runoff while bypassing the `.cleaner' runoff to the remaining chambers. The `Isolator Row' will be spray-washed and the sediment removed using a vactor truck. The detention system volumes are calculated using the WWHM (ver.3) computer program. The StormTecO system provides storage within the individual chambers and the void spaces in the surrounding crushed rock. Approximately 38 percent of the required detention volume will be handled by a remote detention facility located on the GRCC campus. Summary Table Pre-Developed Condition Event Output: WWHM Basin ID: Total Site Area Peak Flow cfs Area ac 2-year existing 0.136 5.41 10-year existing 0.252 5.41 25-year existing 0.293 5.41 100- ear existing 0.337 5.41 Green River Community College 6 Au st 2010 Trades Building • • , , , , Preliminary Storm Drainage Report Developed Condition Event Output: WWHM Basin ID: Total Site Area Mitigated Peak Area (ac) Flow cfs 2-year existing 0.105 5.41 10-year existing 0.252 5.41 25-year existing 0.363 5.41 100-year existing 0.588 5.41 Calculations are provided in Appendix C. Water Quality Design Water quality will be provided through a media filtration system, such as a StormFilter® cartridge vault. The StormFilter media filtration unit is an approved DOE structure for providing stormwater treatment of the site runoff. Pretreatment for the water quality unit, required to remove the larger pollutants in the stormwater runoff before discharging to the media filtration unit, will be provided within the upstream detention system. Pretreatment also increases the longevity and performance of the media filtration unit. Summary of Design Parameters & Results Total Site Basin Total Area to be Developed (Assumed Forested Condition) 5.41 acres New Impervious Area (Pavement) 2.80 acres New Impervious (Roof Area) 1.98 acres Total Impervious Area (Used in Detention Design) 4.78 acres New Pervious (Site Landscaping) 0.63 acres Total Detention Volume Required: 78,000 cu. ft. Project Site Requirements Total Site Basin Water Quality Required Flow Control .......................................................................................................................Required Green River Community College 7 Au st 2010 Trades Building Preliminary Storm Drainage Report 4. Erosion and Sedimentation Analysis and Design The following erosion and sedimentation control BMPs will be used for this project: • Construction entrance • Silt fence • Interceptor ditches with check dams • Temporary inlet protection for the existing drainage systems • Sediment trap The proposed detention system will be used as a temporary sediment trap during construction operations. The sediment trap will be sized according to the design standards of the Washington State Department of Ecology Manual, 2005. Runoff was based on developed conditions. The 10-year, 24-hour storm was used as the basis for trap size. 5. Required Permits or Approvals • A Hydraulic Project Approval (HPA) from the Washington State Department of Fish and Wildlife is not required for this project. • Grading Permit • Building Permit sah\21\10\005\stemper grcc trades\drainage\trades building drainage report.doc\mad Green River Community College 8 Au st 2010 Trades Building M , it . , Preliminary Storm Drainage Report APPENDIX A BASIN MAPS Green River Community College Au st 2010 Trades Building'. . Preliminary: Storm Drainage Report \r �! �.j 1 ! � �+ 'i !i�l, � I'N —t_�� z CHILD CARE CENTER i,,. • ':i��,—� ' `} `� '� i UPSTREAM �`r EXISTING�\ i �:� , � ' OFF-SITE i ;_�_n �I TRIBUTARY AREA `.OFF-SITE�; DEfENTION AND a- -= ;:� � ' I � - .WETLAND ` , CONVEYANCE � : �k �� ' —� -� � � � -�:,-- =--4--._°�- ----- , ' 7� , �_.,. . 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QUAtti-[l" 3. , a� ' TOTAL = 4J8 AC � _.� j � u . ��; � xr ° �AUiT �� s +u�W'I � � j � ' � 14�a� � - , ' �, 9� � a �I i �J�# ,s" PROPOSED PERVIOUS ' � . i � ( C � ` �E;= , �_, t x ; , �j��'i� I �I LANDSCAPE = 0.63 AC � � 4 ?'I � / � .� ;l �r � � � t �� . ` -- i � 4R�' ` " " '� ' � °" \ `' � �, (c� at " " 3 I��;�h�a- I �I1 APPROXIMATELY 1.7 ACRES OF i i � i- - � ii �:�u � i c! � r �- ,� : � BUILDING ROOF AREA TO BE ROUTED - � �� , � '.a f� - �= ' / . '� t., i c, µ � . � \' (. �i -_ , 4 r �„ �' � �, �;^ i �. �+ � ;,� i j TO AN EXISTING REMOTE DETENTION n. � W � i� � � � � i � ��, , ! 'r. �� FACILITY ON THE GREEN RIVER CC � --� � (, � � � ` 'c� " � f �' �� i`� _I CAMPUS (NOT SHOWN) FOR FLOW � I > �� 1 � � , . .. i � --_ / � � �', EXISTING '�. . ��I � CONTROL. � vZ-i ; , � F , ' �^ i *-r'�r WETLAND = �''� I- . 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' _ . �h` `�'4as J rrf . � ; ' ! . 1 i : -?'4.1 - m � � ��, "�'��'& ��r .T• i �' 1 � r ! - �(�j ��" _� r Ir.: . � • �4, ��, ,, � ��;; , , I .:�`. :v i;��i � � �, � , t � t �- _, '' � � � i `•<, '� ').: ,,;� ,�� ,' � .� j . �_ - , � S i l �•_�. t l . �1 � _° r "�,... _ -- � i APPENDIX C WWHM DETENTION CALCULATIONS Green River Community College Au st 2010 Trades Building Preliminary Storm Drainage Report Western Washington Hydrology Model PROJECT REPORT Project Name: GRCC Trades Bldg Site Address: 124th Ave City Auburn Report Date 6/16/2010 Gage Seatac Data Start 1948/10/01 Data End 1998/09/30 Precip Scale: 1.00 WWHM3 Version: PREDEVELOPED LAND USE Name Site Basin Bypass: No GroundWater: No Pervious Land Use Acres C, Forest, Flat 5.41 Impervious Land Use Acres Element Flows To: Surface Interflow Groundwater Name Dev. Site Basin Bypass: No GroundWater: No Pervious Land Use Acres C, Lawn, Flat .63 Impervious Land Use Acres ROADS FLAT 2.8 ROOF TOPS FLAT 1.98 Element Flows To: Surface Interflow Groundwater Site Pond, Name Site Pond Bottom Length: 150.966221179653ft. Bottom Width: 150.966221179653ft.. Depth 4ft. volume at riser head 1.7788ft. Side slope 1: 3 To 1 Side slope 2: 3 To 1 Side slope 3: 3 To 1 Side slope 4: 3 To 1 Discharge Structure Riser Height: 3 ft. Riser Diameter: 18 in. NotchType Rectangular Notch Width 0.075 ft. Notch Height: 1.144 ft. Orifice 1 Diameter: 1.372 in. Elevation: 0 ft. MITIGATED LAND USE ANALYSIS RESULTS Flow Frequency Return Periods for Predeveloped. POC #1 Return Period Flow(cfs) 2 year 0.136157 5 year 0.210982 10 year 0.25153 25 year 0.29274 50 year 0.317209 100 year 0.337317 Flow Frequency Return Periods for Mitigated. POC #1 Return Period Flow(cfs) 2 year 0.105244 5 year 0.183139 10 year 0.252194 25 year 0.363257 50 year 0.465962 100 year 0.588218 Yearly Peaks for Predeveloped and Mitigated. POC #1 Year Predeveloped Mitigated 1950 0.156 0.063 1951 0.267 0.115 1952 0.340 0.553 1953 0.105 0.057 1954 0.081 0.112 1955 0.119 0.067 1956 0.209 0.067 1957 0.171 0.192 1958 0.132 0.067 1959 0.147 0.099 1960 0.122 0.065 1961 0.211 0.276 1962 0.123 0.159 1963 0.072 0.059 1964 0.097 0.091 1965 0.122 0.138 1966 0.091 0.172 1967 0.092 0.078 1968 0.201 0.141 1969 0.123 0.075 1970 0.123 0.067 1971 0.093 0.102 1972 0.089 0.093 1973 0.247 0.261 1974 0.110 0.179 1975 0.118 0.078 1976 0.169 0.066 1977 0.112 0.075 1978 0.011 0.062 1979 0.094 0.123 1980 0.057 0.054 1981 0.165 0.254 1982 0.087 0.079 1983 0.153 0.262 1984 0.149 0.075 1985 0.096 0.059 1986 0.052 0.063 1987 0.263 0.153 1988 0.220 0.277 1989 0.080 0.067 1990 0.051 0.062 1991 0.349 0.295 1992 0.308 0.303 1993 0.100 0.109 1994 0.116 0.058 1995 0.029 0.053 1996 0.165 0.170 1997 0.320 0.360 1998 0.296 0.274 1999 0.060 0.059 Ranked Yearly Peaks for Predeveloped and Mitigated. POC #1 Rank Predeveloped Mitigated 1 0.3486 0.5527 2 0.3401 0.3600 3 0.3198 0.3028 4 0.3081 0.2952 5 0.2956 0.2769 6 0.2672 0.2760 7 0.2629 0.2739 8 0.2471 0.2617 9 0.2196 0.2609 10 0.2108 0.2538 11 0.2087 0.1921 12 0.2011 0.1787 13 0.1713 0.1722 14 0.1686 0.1699 15 0.1648 0.1588 16 0.1647 0.1527 17 0.1559 0.1408 18 0.1534 0.1384 19 0.1493 0.1232 20 0.1473 0.1155 21 0.1317 0.1122 22 0.1233 0.1090 23 0.1231 0.1020 24 0.1228 0.0993 25 0.1220 0.0934 26 0.1216 0.0907 27 0.1188 0.0794 28 0.1176 0.0785 29 0.1160 0.0784 30 0.1123 0.0754 31 0.1102 0.0752 32 0.1047 0.0747 33 0.1003 0.0675 34 0.0973 0.0672 35 0.0960 0.0671 36 0.0945 0.0670 37 0.0933 0.0668 38 0.0924 0.0657 39 0.0907 0.0652 40 0.0887 0.0633 41 0.0871 0.0625 42 0.0807 0.0624 43 0.0804 0.0622 44 0.0721 0.0594 45 0.0603 0.0593 46 0.0568 0.0587 47 0.0521 0.0584 48 0.0509 0.0573 49 0.0293 0.0544 50 0.0111 0.0534 POC #1 The Facility PASSED The Facility PASSED. Flow(CFS) Predev Dev Percentage Pass/Fail 0.0681 3903 3832 98 Pass 0.0706 3667 3452 94 Pass 0.0731 3372 3028 89 Pass 0.0756 3191 2820 88 Pass 0.0781 2944 2521 85 Pass 0.0807 2787 2370 85 Pass 0.0832 2569 2141 83 Pass 0.0857 2434 1992 81 Pass 0.0882 2238 1825 81 Pass 0.0907 2119 1736 81 Pass 0.0932 1968 1616 82 Pass 0.0958 1883 1541 81 Pass 0.0983 1761 1426 80 Pass 0.1008 1680 1352 80 Pass 0.1033 1574 1263 80 Pass 0.1058 1500 1216 81 Pass 0.1083 1403 1138 81 Pass 0.1109 1343 1088 81 Pass 0.1134 1251 1030 82 Pass 0.1159 1196 988 82 Pass 0.1184 1120 942 84 Pass 0.1209 1081 914 84 Pass 0.1234 1013 874 86 Pass 0.1260 971 845 87 Pass 0.1285 916 812 88 Pass 0.1310 887 792 89 Pass 0.1335 831 754 90 Pass 0.1360 782 713 91 Pass 0.1385 759 685 90 Pass 0.1411 716 650 90 Pass 0.1436 698 628 89 Pass 0.1461 658 597 90 Pass 0.1486 632 576 91 Pass 0.1511 602 545 90 Pass 0.1536 577 522 90 Pass 0:1562 551 498 90 Pass 0.1587 526 483 91 Pass 0.1612 495 461 93 Pass : 0.1637 472 448 94 Pass ' 0.1662 445 429 96 Pass 0.1687 428 415 96 Pass 0.1713 407 394 96 Pass 0.1738 388 381 98 Pass 0.1763 368 361 98 Pass 0.1788 353 352 99 Pass 0.1813 338 339 100 Pass 0.1838 322 330 102 Pass 0.1864 304 318 104 Pass 0.1889 286 307 107 Pass 0.1914- - -276 291 1.05- Pass 0.1939 266 276 103 Pass 0.1964 246 263 106 Pass 0.1989 238 256 107 Pass 0.2015 224 243 108 Pass 0.2040 217 235 108 Pass 0.2065 206 223 108 Pass 0.2090 198 212 107 'Pass 0.2115 191 206 107 Pass 0.2140 183 194 106 Pass' 0.2166 178 188 105 Pass' 0.2191 168 175 104 Pass 0.2216 164 168 102 Pass' 0.2241 155 159 102 Pass ' 0.2266 154 154 100 Passe 0.2291 149 148 99 Pass 0.2316 143 141 98 Pass 0.2342 139 135 97 Pas''s 0.2367 133 130 97 Pass' 0.2392 124 120 96 Pass 0.2417 122 115 94 Pass 0.2442 112 109 97 Pass 0.2467 107 105 98 Pass 0.2493 103 95 92 Pass 0.2518 96 90 93 Pass 0.2543 87 83 95 Pass 0.2568 85 77 90 Pass 0.2593 71 72 101 Pass 0.2618 69 66 95 Pass 0.2644 63 59 93 Pass 0.2669 59 59 100 Pass 0.2694 55 52 94 Pass 0.2719 52 48 92 Pass 0.2744 49 42 85 Pass 0.2769 46 39 84 Pass 0.2795 44 34 77 Pass 0.2820 39 33 84 Pass 0.2845 35 33 94 Pass 0.2870 32 29 90 Pass 0.2895 28 27 96 Pass 0.2920 25 23 92 Pass 0.2946 23 23 100 Pass 0.2971 20 18 90 Pass 0.2996 19 18 94 Pass 0.3021 18 16 88 Pass 0.3046 18 15 83 Pass 0.3071 15 15 100 Pass _ 0.3097 13 14 107 Pass 0.3122 13 13 100 Pass 0.3147 11 12 109 Pass 0.3172 10 11 110 Pass Water Quality BMP Flow and Volume for POC 1. On-line facility volume: 0.5366 acre-feet On-line facility target flow: 0.01 cfs. Adjusted for 15 min: 0.7098 cfs. Off-line facility target flow: 0.3643 cfs. Adjusted for 15 min: 0.408 cfs. This program and accompanying documentation is provided 'as-is' without warranty of any kind. The entire risk regarding the performance and results of this program is assumed by the user. Clear Creek Solutions and the Washington State Department of Ecology disclaims all warranties, either expressed or implied, including but not limited to implied warranties of program and accompanying documentation. In no event shall Clear Creek Solutions and/or the Washington State Department of Ecology be liable for any damages whatsoever (including without limitation to damages for loss of business profits, loss of business information, business interruption, and the like) arising out of the use of, or inability to use this program even if Clear Creek Solutions or the Washington State Department of Ecology has been advised of the possibility of such damages. APPENDIX D PIPE SIZING AND BACKWATER CALCULATIONS (To be included in a later submittal) Green River Community College Au st 2010 Trades Building 1: Mr. 1 ~ Fr. a 1 n n. 11 Preliminary Storm Drainage Report Green River Community College Trades Building, Noise Study Appendix August 20, 2010 +',gH9i P00 age Al of Al5 APPENDIX JULIE A. WIEBUSCH, INCE, LEED APTM - President & Lead Acoustician Julie Wiebusch is one of the founding principals of The Greenbusch Group, Inc. She has served as President and CEO since the firm's inception in 1989, and continues in an active practice as the lead Acoustician and Director of the Acoustics Department. She is a respected leader throughout the Pacific Northwest in the field of environmental acoustics. Her reputation as an expert in the field of Industrial noise control has resulted in design projects as far away as Atlanta, Georgia and Greenville, North Carolina. Ms. Wiebusch's 37-year career in acoustics has encompassed a wide variety of job types, including participation in numerous projects involving the measurement, prediction and evaluation of environmental noise exposure levels. Over the past 20 years, she has served as an expert witness in several cases involving environmental noise issues. Ms. Wiebusch has conducted measurements and provided analyses to Pierce County and the City of Mill Creek enforcing authorities to assist with identifying Code violations. She also sat as the Noise Expert on a panel advising the City of Seattle's Department of Planning and Development (DPD) on language revisions for the City Noise Code. She is currently under contract with the City of Portland to create a "noise map" of the North Portland neighborhoods. Ms. Wiebusch has also been retained by the Port of Seattle, King County, Port of Everett and Sound Transit to evaluate noise exposure within homes near air, shipping and commuter rail traffic corridors. Mitigation treatments were developed to reduce the transportation source's impact on local residents. Ms. Wiebusch is frequently called upon to testify at Community meetings. She is skilled at presenting complex acoustical concepts to non-technical audiences. Ms. Wiebusch is active in the ASTM E33 Environmental Acoustics Committee, contributing her expertise to the development and refinement of acoustical measurement methodology. She is the Technical Contact and primary author for revised language of two standards; E1014 "Standard Guide for Measurement of Outdoor A-Weighted Sound Levels" and E1503 "Standard Test Method for Conducting Outdoor Sound Measurements Using a Digital Statistical Sound Analysis System." She is also a U.S Technical Expert to the International Standards Organization (ISO) on Work Groups WG 18-Sound Isolation, WG 19-Measurement, WG 22-Impact Sound and the Technical Chair of WG 17-Flanking. Ms. Wiebusch is a member of the faculty at Marylhurst University, in Marylhurst, Oregon where she teaches one-day workshops in Acoustics. She is also an invited guest lecturer at local Universities and various conferences. Education 2001 Post-Baccalaureate Certificate, Noise Control Engineering Penn State University 1973 BA Interior Design, Washington State University Employment History 1989 - Present The Greenbusch Group, Inc. President/CEO and Director of Acoustics 1974 - 1989 Towne, Richards & Chaudiere, Inc. Acoustical Consultant 41;[_ G R E E N B U S C H (',,,C,.'V, i'~; .M. 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 - Fax(206)378-0641 www.greenbusch.com 1 1 Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A2 of A15 Relevant Experience Ellensburg Trap and Skeet Club Ellensburg, Washington Evaluated noise levels from the gunfire associated with the activity at a relocated Trap and Skeet facility. The study included measurement of the actual weapons used and creation of a computer model to predict community noise exposure. Provided testimony before Kittitas County Council on two occasions. Edmonds Skate Park Edmonds, Washington Evaluated noise levels associated with skateboarding activity and predicted the exposure levels on the surrounding community. Provided testimony twice before the Edmonds Planning Board and twice before the Edmonds City Council. Tacoma Narrows Bridge Tacoma, Washington Evaluated noise levels associated with the construction activity associated with the building of the new Tacoma Narrows Bridge. Predicted noise exposure levels in the community immediately adjacent to the construction work and presented testimony in front of the Pierce County Council. Boo Han Grocery Edmonds, Washington Boo Han Grocery is a small convenience market located on a major thoroughfare. The community behind the market was concerned that the owners had removed trees on the property, which they perceived as providing noise mitigation from the traffic noise. Greenbusch evaluated noise levels associated with deliveries and traffic associated with the Grocery. Presented testimony to the Edmonds City Council. Private Helipad Vashon Island, Washington Measured noise levels associated with the operation of a helicopter on a large parcel of privately held property. Noise exposure levels were predicted for both the private helipad and for operations from the local airport. It was determined that community noise exposure from landing on the private property was less than that of the airport. Testimony was provided before King County Department of Design, Construction and Land Use (DCLU). (Currently DPD) North Marina Redevelopment Everett, Washington Conducted initial measurements and provided an evaluation of a mixed-use, commercial and residential, development along the North Marina. Testimony was provided before the Everett City Council as to the potential noise impact to homes on the bluff overlooking the development. Clark County Amphitheater Vancouver, Washington Provided a peer review of the design of a new amphitheater in Clark County. Predicted levels were verified and testimony was provided on behalf of the community before the Hearing Examiner in Clark County, Washington. Professional Affiliations Director at Large - National Council of Acoustical Consultants (NCAC) Acoustical Society of America (ASA) Institute of Noise Control Engineers (INCE) Member- ASTM E-33 Environmental Acoustics Committee Technical Contact E33.09 Community Noise US Technical Expert - International Standards Organization (ISO) Chairman - Music Technology Advisory Board, Shoreline Community College Audio Engineering Society (AES) International Communications Industries Association (ICIA) Noise Expert - City of Seattle Nightlife Advisory Board LEED AP (2009) - U.S. Green Building Council (USGBC) Faculty - Marylhurst University 1 GREENBUSCH 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A3 of A15 ADAM C. JENKINS, INCE -Acoustician, Noise Modeling Expert Adam Jenkins is an Acoustician with The Greenbusch Group, Inc. During his time with Greenbusch, Adam has provided acoustical consulting services for a wide range of projects. Adam has worked closely with mechanical engineers to develop noise and vibration control approaches for HVAC equipment in higher education, health care, industry and utility, residential and commercial spaces. He has utilized reality-grounded 3-D computer modeling to evaluate complex acoustical environments, provoking efficient and optimized mitigation approaches for challenging environmental noise issues. Education Ongoing Masters of Engineering in Acoustics, The Pennsylvania State University 2004 BS Electrical Engineering & Physics, Seattle Pacific University Employment History 2006 - Present The Greenbusch Group, Inc. Consultant in Architectural, Environmental and HVAC acoustics. 2004- 2006 THD Electronics, Ltd. Engineer and assembler of solid state electronic professional audio products. Relevant Experience Wenatchee City Shops Wenatchee, Washington Ronald Wastewater District Maintenance Facility Shoreline, Washington City of Seattle Fleet and Facilities Maintenance Shops Seattle, Washington North Portland Environmental Noise Study Portland, Oregon Fanno Basin Force Main Replacement Project Portland, Oregon Fanno Basin Pump Station Expansion Project Portland, Oregon Stonegate Lift Station Replacement Renton, Washington Chevron Extraction Unit Noise Measurement San Bruno, California Cherry Park Pump Station Portland, Oregon Edmonds WWTP Odor Control Noise Study Edmonds, Washington Johns Creek Environmental Campus Atlanta, Georgia Columbia Boulevard Digester Expansion Portland, Oregon City of Mercer Island Pump Station #4 Mercer Island, Washington City of Bainbridge Island Pump Station Bainbridge Island, WA Highland Pump Station #2 Noise Study Monroe, Washington Houghton Transfer Station Kirkland, Washington Nurturing Knowledge Day Care Seattle, Washington Verizon Wireless Peer Review Seattle, Washington University of Washington Gerberding Belltower Noise Study Seattle, Washington Weissinger Studio Sculpture Noise Friday Harbor, Washington Sound Transit University Link Light Rail Construction Noise Seattle, Washington Brightwater Marine Outfall Construction Noise Measurements Shoreline, Washington Wilsonville WWTP Wilsonville, Oregon UW Libraries Sand Point Remote Shelving Seattle, Washington Professional Affiliations Board Member on Committee for Diversity in Acoustics - Acoustical Society of America (ASA) Member- Institute of Noise Control Engineering (INCE) 11E. GRE EN BUSCti 1NCI 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 • Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A4 of A15 Table Al. Hourly Measurement Data, Location A (western PL) Date Start of Hour Leq Lmax Lot Los L25 Notes 10:00 PM 49 67 58 53 48 04/22/10 11:00 PM 52 76 60 53 47 12:00 AM 46 68 55 47 41 1:00 AM 42 63 52 45 39 2:00 AM 38 53 46 41 38 3:00 AM 37 59 44 38 36 4:00 AM 37 54 45 40 37 5:00 AM 44 61 51 47 45 6:00 AM 51 66 58 55 52 7:00 AM 58 73 67 62 57 8:00 AM 53 71 60 56 53 9:00 AM 52 70 60 56 53 10:00 AM 53 73 58 55 53 11:00 AM 53 72 59 56 53 04/23/10 12:00 PM 52 72 58 55 53 1:00 PM 52 69 58 55 52 2:00 PM 52 73 59 55 52 3:00 PM 52 78 57 54 52 4:00 PM 52 72 58 54 52 5:00 PM 51 67 57 53 51 6:00 PM 50 70 56 53 50 7:00 PM 51 76 57 54 51 8:00 PM 50 64 55 53 50 9:00 PM 49 65 54 52 50 10:00 PM 49 68 57 53 49 11:00 PM 49 74 57 52 48 04/24/10 12:00 AM 46 68 54 49 44 1:00 AM 45 65 53 46 42 2:00 AM 42 61 49 45 42 3:00 AM 41 63 48 44 41 4:00 AM 41 58 48 43 40 5:00 AM 44 66 52 47 43 6:00 AM 52 74 61 54 49 Rainfall 7:00 AM 51 76 56 53 50 8:00 AM 51 68 58 54 51 9:00 AM 53 76 60 56 53 10:00 AM 50 66 55 53 51 11:00 AM 51 71 57 54 51 12:00 PM 53 75 60 55 52 1:00 PM 54 77 64 57 52 2:00 PM 51 65 57 54 51 3:00 PM 51 64 56 54 52 4:00 PM 53 71 60 56 52 5:00 PM 54 88 59 54 51 6:00 PM 51 70 58 54 51 1900 West Nickerson Street • Suite 201 - Seattle, WA 98119 Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A5 of A15 Date Start of Hour LeQ Lmax Lot Loa L25 Notes 7:00 PM 49 64 55 53 50 8:00 PM 50 66 56 53 51 9:00 PM 48 64 54 51 48 10:00 PM 49 68 59 53 48 11:00 PM 50 71 60 54 47 12:00 AM 47 68 57 49 45 1:00 AM 44 61 52 48 42 2:00 AM 42 59 50 46 42 3:00 AM 40 61 47 43 40 4:00 AM 43 68 47 44 41 5:00 AM 44 63 53 45 41 6:00 AM 50 71 60 52 45 7:00 AM 50 66 60 55 48 8:00 AM 50 64 59 55 49 9:00 AM 51 70 60 55 50 10:00 AM 50 71 57 53 50 04/25/10 11:00 AM 52 74 61 55 50 12:00 PM 51 67 59 55 51 1:00 PM 53 78 62 56 51 2:00 PM 53 72 61 56 52 3:00 PM 49 64 55 53 50 1~1 4:00 PM 51 72 58 54 50 5:00 PM 51 72 59 55 50 6:00 PM 51 74 58 55 51 7:00 PM 49 65 57 52 49 8:00 PM 51 76 57 52 49 9:00 PM 49 66 57 52 49 10:00 PM 46 61 54 50 47 11:00 PM 44 59 52 48 44 12:00 AM 42 61 49 45 41 1:00 AM 40 55 47 43 39 2:00 AM 39 53 46 41 38 3:00 AM 42 61 47 44 42 04/26/10 4:00 AM 45 59 51 49 46 5:00 AM 49 59 54 52 50 6:00 AM 55 71 61 58 56 7:00 AM 55 74 60 58 56 8:00 AM 53 68 59 56 54 Source: The Greenbusch Group, 2010 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com 1 Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A6 of A15 Table A2. Hourly Measurement Data, Location B (northern PL) ' Date Start of Hour Leq Lmax Lot Lab L25 Notes 04/22/10 10:00 PM 44 64 54 47 42 11:00 PM 47 71 55 50 41 12:00 AM 41 64 51 40 35 1:00 AM 38 59 46 39 36 2:00 AM 33 48 39 36 34 3:00 AM 32 53 37 34 32 4:00 AM 32 47 38 35 32 5:00 AM 54 74 65 59 43 6:00 AM 45 59 52 49 46 7:00 AM 51 72 60 54 49 8:00 AM 46 62 53 50 46 9:00 AM 47 77 54 50 47 10:00 AM 46 63 53 49 46 11:00 AM 46 66 53 49 46 04/23/10 12:00 PM 45 64 52 48 45 1:00 PM 45 60 52 48 45 2:00 PM 47 64 53 50 47 3:00 PM 46 68 53 49 46 4:00 PM 46 62 53 49 46 5:00 PM 44 60 51 47 44 6:00 PM 43 62 50 46 43 7:00 PM 45 69 51 47 44 8:00 PM 45 82 50 46 43 9:00 PM 52 89 51 47 44 10:00 PM 47 85 51 46 42 11:00 PM 48 89 52 45 41 04/24/10 12:00 AM 39 60 47 41 37 1:00 AM 37 57 45 40 36 2:00 AM 36 55 43 39 36 3:00 AM 34 49 41 37 34 4:00 AM 34 56 39 36 34 5:00 AM 53 76 64 57 41 Rainfall 6:00 AM 45 68 53 46 42 7:00 AM 43 72 49 45 42 8:00 AM 43 64 50 46 43 9:00 AM 45 67 53 47 44 10:00 AM 42 58 48 45 43 11:00 AM 44 81 50 45 43 12:00 PM 46 72 52 47 44 1:00 PM 47 73 55 49 44 2:00 PM 45 84 50 46 43 3:00 PM 43 64 48 46 43 4:00 PM 44 77 50 46 43 5:00 PM 43 68 48 45 42 6:00 PM 42 65 50 46 42 4 GREENBUSCH 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A7 of A15 Date Start of Hour Leq Lmax Lot L08 L25 Notes 7:00 PM 41 66 48 44 42 8:00 PM 40 60 45 43 40 9:00 PM 39 56 45 42 39 10:00 PM 41 60 50 44 39 11:00 PM 43 66 51 46 38 12:00 AM 39 58 48 41 37 1:00 AM 36 56 45 39 35 2:00 AM 34 48 41 38 34 3:00 AM 34 53 40 37 34 4:00 AM 35 53 41 38 36 5:00 AM 53 71 65 56 42 6:00 AM 43 65 52 46 40 7:00 AM 42 61 52 47 40 8:00 AM 42 59 52 47 41 9:00 AM 42 63 52 45 40 10:00 AM 40 58 48 43 40 04/25/10 11:00 AM 43 63 52 46 40 12:00 PM 41 64 50 45 40 1:00 PM 45 67 54 47 41 2:00 PM 44 62 53 48 42 3:00 PM 41 59 48 44 41 4:00 PM 43 66 49 45 41 5:00 PM 43 66 51 46 41 6:00 PM 41 58 48 44 41 7:00 PM 40 57 49 43 40 8:00 PM 41 67 48 43 39 9:00 PM 40 57 49 43 39 10:00 PM 37 54 44 40 36 11:00 PM 35 52 44 39 35 12:00 AM 34 54 41 37 33 1:00 AM 31 45 38 33 30 2:00 AM 30 51 36 32 29 3:00 AM 33 49 39 36 34 04/26/10 4:00 AM 37 52 42 40 38 5:00 AM 41 53 45 43 41 6:00 AM 46 63 52 49 47 7:00 AM 46 64 51 48 46 8:00 AM 44 63 50 47 44 Source: The Greenbusch Group, 2010 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A8 of A15 Table A3. Hourly Measurement Data, Location C (eastern PL) Date Start of Hour Leq Lmax Lot Lab L25 Notes 6:00 PM 64 81 72 69 65 7:00 PM 62 79 71 68 61 8:00 PM 62 85 71 68 61 06/11/10 9:00 PM 62 80 71 68 62 10:00 PM 63 91 71 68 61 11:00 PM 60 81 70 65 56 12:00 AM 61 92 69 64 53 1:00 AM 58 84 68 61 48 2:00 AM 57 84 69 59 47 3:00 AM 52 77 63 48 41 4:00 AM 54 77 66 53 44 5:00 AM 54 75 65 53 44 6:00 AM 58 84 69 62 50 7:00 AM 64 95 72 70 65 8:00 AM 61 81 71 67 57 9:00 AM 64 92 72 68 61 10:00 AM 63 80 72 68 63 11:00 AM 63 80 71 68 62 06/12/10 12:00 PM 64 89 72 69 65 1:00 PM 63 82 71 68 62 2:00 PM 62 78 71 68 62 3:00 PM 64 90 72 68 63 4:00 PM 63 84 71 68 63 5:00 PM 62 80 70 68 63 6:00 PM 62 82 70 68 62 7:00 PM 62 94 71 67 60 8:00 PM 62 82 70 67 60 Law enforcement near sound level 9:00 PM 61 81 70 67 60 meter 10:00 PM 60 78 70 66 57 11:00 PM 59 76 69 64 54 06/13/10 12:00 AM 59 77 69 64 54 1:00 AM 57 79 68 62 49 2:00 AM 54 78 66 55 44 3:00 AM 53 79 65 51 41 4:00 AM 50 71 60 46 41 5:00 AM 55 88 62 49 43 6:00 AM 54 76 65 53 44 7:00 AM 56 76 68 59 48 8:00 AM 61 93 70 65 53 9:00 AM 61 82 71 67 58 10:00 AM 61 79 71 67 58 11:00 AM 61 82 70 67 59 12:00 PM 62 91 71 67 60 1:00 PM 62 81 71 68 61 2:00 PM 62 84 71 68 60 i l GREENBUSCN 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A9 of A15 Date Start of Hour Leq Lmax Lot Loa L25 Notes 3:00 PM 62 81 71 67 61 4:00 PM 62 79 71 68 61 5:00 PM 61 81 70 67 60 6:00 PM 62 82 71 68 60 7:00 PM 61 82 70 67 59 8:00 PM 61 86 70 67 58 9:00 PM 60 79 70 66 57 10:00 PM 57 76 68 62 51 11:00 PM 57 79 68 62 50 12:00 AM 55 75 67 59 45 1:00 AM 53 74 64 52 40 2:00 AM 51 76 62 45 35 3:00 AM 47 72 52 40 36 06/14/10 4:00 AM 52 75 64 49 40 5:00 AM 59 85 70 62 49 6:00 AM 63 91 72 68 60 7:00 AM 64 84 72 69 64 Source: The Greenbusch Group, 2010 Table A4. Hourly Measurement Data, Location D (eastern PL) Date Start of Hour LeQ Lmax Lot Loa L25 Notes 6:00 PM 58 75 66 63 59 7:00 PM 57 75 65 62 57 06/11/10 8:00 PM 60 94 66 62 57 9:00 PM 57 73 65 62 58 10:00 PM 58 86 66 63 57 11:00 PM 58 88 64 60 53 06/12/10 12:00 AM 54 74 63 59 52 1:00 AM 51 69 62 56 47 2:00 AM 52 80 63 55 45 3:00 AM 47 71 58 47 41 4:00 AM 49 69 60 52 46 5:00 AM 48 69 58 49 44 6:00 AM 53 71 63 58 50 7:00 AM 65 98 67 64 60 8:00 AM 57 79 66 62 55 9:00 AM 57 77 65 61 56 10:00 AM 58 78 66 62 58 11:00 AM 57 75 65 61 56 12:00 PM 58 80 66 62 59 1:00 PM 57 76 65 62 58 2:00 PM 57 82 65 62 57 3:00 PM 59 77 67 63 58 4:00 PM 58 86 65 62 57 5:00 PM 57 78 65 62 57 6:00 PM 57 78 65 62 57 7:00 PM 59 90 66 62 56 it. GREENBUSCH ~_;FIi... 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A10 of A15 Date Start of Hour Leq Lmax Lot Los L25 Notes 8:00 PM 57 78 65 61 56 9:00 PM 57 79 64 61 56 10:00 PM 56 79 64 61 54 11:00 PM 54 72 63 59 51 12:00 AM 54 74 63 59 50 1:00 AM 54 83 63 58 48 2:00 AM 52 81 61 53 45 3:00 AM 50 75 60 48 41 4:00 AM 46 71 54 48 43 5:00 AM 47 68 57 47 42 6:00 AM 50 70 60 51 45 7:00 AM 51 74 62 56 48 8:00 AM 54 76 63 58 50 9:00 AM 56 77 64 60 54 10:00 AM 55 75 64 60 55 06/13/10 11:00 AM 55 79 63 60 54 12:00 PM 59 87 64 60 55 1:00 PM 56 79 64 61 55 2:00 PM 56 81 64 61 56 3:00 PM 57 82 65 61 55 4:00 PM 59 88 65 62 57 5:00 PM 58 90 65 61 56 6:00 PM 57 79 65 62 57 7:00 PM 56 78 64 61 55 8:00 PM 56 80 64 61 54 9:00 PM 55 72 64 61 53 10:00 PM 53 76 62 57 49 11:00 PM 53 71 63 58 48 12:00 AM 51 75 62 55 44 1:00 AM 48 66 59 49 41 2:00 AM 46 69 57 42 35 06/14/10 3:00 AM 42 64 49 38 34 4:00 AM 46 73 55 46 42 5:00 AM 53 77 63 57 47 6:00 AM 56 75 65 62 55 7:00 AM 60 87 67 64 59 Source: The Greenbusch Group, 2010 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page All of A15 N_ Chart Al. Existing Hourly Ambient Sound Levels at Location A (western property line) 100 a 90 z 0 N 80 - d Q n 70 ilk d 60 H 50 N a 40 c 0 30 20 a d a Q Q a- a a a- ¢ Q¢¢ a a o a a¢ Q a a n Q a 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o ~ v n o ~ v r` o IT r` o - v ~ o o ~ v r- o ~ v Time I-Leq Lmax L02 - L08 - L25 Source: The Greenbusch Group, 2010 Chart A2. Existing Hourly Ambient Sound Levels at Location B (northern property line) 100 L a 90 z 0 w 80 70 - 60 --I m IL 40 N 30 20 o a a Q a a a a a a Q¢ a a a_ a a a Q a a M M Q- M¢ a a 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o v r o v r o- v r-: o- v r o y r o y r o- v r- Time I- Leq Lmax L02 - L08 - L25 Source: The Greenbusch Group, 2010 ' IM I GREEN BUSCH 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A12 of A15 Chart A3. Existing Hourly Ambient Sound Levels at Location C (eastern property line) - - - - 100 aL 90 N 80~ ai CO 70 " I d 60 J m H 50 a 40 a N 30 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (o m N M (O m N CO (D M N M (D m N CO (D m N M (D Time I- Leq Lmax - L02 - L08 - 1-25 Source: The Greenbusch Group, 2010 Chart A4. Existing Hourly Ambient Sound Levels at Location D (eastern property line) loo - - - a 90 _ z r, o i°t 80 r c ate. ~ 70 d - w 60 \A I - J d 50 N H a 40 c V CO) 30 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 C. 0 0 0 0 0 o 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 (o N M (o m N M (o m N M (o m N M (o m N M (o Time I - Leq Lmax L02 - L08 -1-25 Source: The Greenbusch Group, 2010 ME GREENBUSCH 1900 West Nickerson Street • Suite 201 • Seattle, WA 98119 • Phone (206) 378-0569 • Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building, Noise Study Appendix August 20, 2010 Page A13 of A15 Table A5. Program Sound Level Spectra, dBA re: 20 NPa Program Descriptor Octave Band Center Frequency, Hz 31.5 63 125 .250 500 1000 2000 4000 8000 Leq 75 73 73 75` 81 82 81 82 79 L90 65 63 63 65 71 72 71 72 69 L25 73 71 71 73 79 80 79 80, 77 Auto Body LOS 80 78 78 80 86 87 86 87 84 L02 83 81 81 83 89 90 89 90 87 Lmax 65 68 76 76 82 85 84 102 93 Leq 70 73 73 69 66 64 62 62 57 L90 64 67 67 63 60 58, 56 56 51 Automotive Repair L25 68 71 71 67 64 62 60 60 55 Lo8 73 76 76 72 69 67 65 65 60 L02 79 82 82 78 75 73 71 71 66 Lmax 88 88 90 79 76 64 81 91 73 Leq 70 71 77 92 91 89 81 78 73 1-90 64 65 71 86 85 83 75 72 67 L25 71 72 78 93 92 90 82 79 74 Carpentry L08 73 74 80 95 94 92 84 81 76 L02 75 76 82 97 96 94 86 83 78 Lmax 68 72 81 97 97 96 96 90 78 Leq 78 75 70 73 76 75 74 70 65 1-90 68 65 60 63 66 65 64 60 55 L25 77 74 69 72 75 74 73 69 64 Manufacturing L08 80 77 72 75 78 77 76 72 67 L02 85 82 77 80 83 82 81 77 72 Lmax 72 69 70 .80 86 88 89 79 68 Leq 73 69 74 76 76 73 72 73 71 L90 67 63 68 70 70 67 66 67 65 L25 73 69 74 76 76 73 .72 73 71 Welding L08 77 73 78 80 80 77 76 77 75 L02 81 77 82 84 84 81 80 81 79 Lmax 69 73 74 89 88 84 81 83 88 Source: The Greenbusch Group, 2010 THE G R E E N B U S C H Gi 0U I'.INC:. 1900 West Nickerson Street Suite 201 Seattle, WA 98119 Phone (206) 378-0569 Fax (206) 378-0641 www.greenbusch.com Green River Community College Trades Building. No�se Study Appendix August20. 2010 Page A74 of A15 � Figure AL Equivalent Daytime Sound Level Contours for Entire Project Excluding HVAC _ ___ -r,T,�---� •�— � ---r-- - - eee �c �_o �,�o nao �mo �rtn iz=c izzc��u i=I� i:se� i?�c c is€a ,eso - �aoa - � � ��'�._. _ �y,� �r r 7^'�' u�il �� . � '�G-� . ,,� . 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(_; l?.t k N ti U S L 11 REVISIONS =q,iE;;- PLOT DESCRIPTION GRCC Trades Building =�-� i ��o. eevivon oare ='��s-:_,_�, ....... Figure A2. i �a� a� -,o�:io �� ::!;s; � i '� All programs and parkmg lots Green River Community College -�:, .o;,o _E ��;:� � T := �� -c� '�iCEO i q�E �. Nr aLP. II� E . ' - �_c��o Rotl-up doors open � ^ _. S_� _ �._ou reeeTS::irE aite__�p�E� _ AUbUffl, Washington o��,� ciaou HOUflyeven�ngLeq •.-.- , vFE � Nt; u > � tl 1900 West Nickerson Street Suite 201 � Seattle. WA�+as t g Phone (2061 378-0569 Fax 1206)37L-0641 www.greenh_=.,i, cem C I Northwest Archaeological Associates, Inc. j Cultural Resources Management Services 5418 20th Avenue NW, Suite 200, Seattle, WA 98107 ~j TECHNICAL MEMORANDUM DATE: June 16, 2010 TO: Jerry Osborn S.M. Stemper Architects 400 Delridge Way SW Seattle, WA 98106 FROM: Ann Sharley, M.A., RPA, and Brandy A. Rinck, M.A., RPA RE: Cultural Resources Review for Lea Hill Park and the Martin Property, City of Auburn, King County, Washington (NWAA Project No. WA 10-043) INTRODUCTION S.M. Stemper Architects, on behalf of Green River Community College (GRCC), contracted with Northwest Archaeological Associates, Inc. (NWAA) to complete a cultural resources review for Lea Hill Park and the adjacent Martin Property. These two parcels, respectively approximately 9 and 7.15 acres in size, are being considered for land exchange and additional development. Lea Hill Park, owned by the City of Auburn, will be exchanged for the Martin Property, recently purchased by GRCC. The College proposes to rezone the existing park site to allow for construction of a new educational building. A new community park would be constructed on the Martin parcel. Both sites are located immediately north of GRCC in the Lea Hill neighborhood of Auburn, a large tract of King County land annexed to the City of Auburn in 2008. The present project is a portion of Section 9, Township 21 North, Range 5 East, Willamette Meridian (Figures 1 and 2). Development of the Lea Hill Park/Martin Property will be subject to the State Environmental Policy Act (SEPA), a Washington State law requiring governmental agencies to consider likely environmental consequences before approving proposed development projects. An Environmental Checklist guides applicants through the SEPA process. Question 13 of this checklist addresses historic and cultural preservation, inquiring if "any places or objects listed on, or proposed for, national, state, or local preservation registers" or "landmarks or evidence of historic, archaeological, scientific, or cultural importance" are "known to be on or next to the site [the proposed project]". Further guidelines note that determinations of eligibility for national, state, or local preservation registers must be conducted, in consultation with the Washington State Department of Archaeology and Historic Preservation (DAHP), for all properties over 50 years of age present in the project area (Washington Department of Ecology 2009). To qualify for listing in the National Register of Historic Places (NRHP) a district, site, structure, building, or object must generally be 50 years of age, possess integrity of physical Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION 1 NOT FOR GENERAL DISTRIBUTION ' r Cultural Resources Review for Lea Hill Park and the Martin Property 2 ~T. 21- N. t h _ F • 881 y ~ I f' Hill Project Area ~ t . n - xd rte`.' t~ l 1 .k s LLI any , j rildQT . c I W L c. ~tF• ' "*if F meters 500 ~YSZ r 0 feet,--. 2000 `(revised 1994). Figure 1. Project location. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 3 f9 SE 316th St r, 4 - r ti ay " f < .r 5 (D - * nl y ~ f " ° - , 4m 1 1144 ~"e e _ T a. fit; :h ( 3 0 1,0 40, meters 3feet SE 320th St 0 25: 125 Figure 2. Air photo showing Lea Hill Park and the Martin Property. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 4 characteristics, and meet at least one of four criteria of significance at the national, state, or local level. For listing in the Washington State Heritage Register, a property must also meet age, integrity, and significance criteria and be considered important at the local, state, or national level. A property may qualify for preservation as a King County Landmark if it is historically or architecturally significant and is more than 40 years old. This cultural resources review is a preliminary document; a check of known historical, ethnographic, archaeological, and geotechnical data to assist planners in developing cultural resource expectations for the project. Research for this review included a cultural resource records search at the DAHP in Olympia, review of General Land Office and Bureau of Land Management cadastral survey and land entry records, inspection of King County Assessor's Office tax parcel information, a search of historical maps in Washington State University's digital map collection, perusal of documents at the Seattle Public Library, and review of selected cultural resources, historical, and natural history reports on file at NWAA. An informal contact letter was mailed to Ms. Laura Murphy, Muckleshoot Tribal Archaeologist, on May 3, 2010, informing her of the proposed project and inquiring about cultural resources of importance to the Tribe, including traditional cultural properties, that could be affected by the proposed project (Attachment A). To date, no response has been received. On May 5, 2010, NWAA archaeologist/architectural historian Ann Sharley conducted a reconnaissance of the proposed project and met with Mrs. Marcie Martin, former owner and current resident of the Martin Property. No systematic archaeological survey of the project was conducted. NATURAL SETTING The proposed Lea Hill Park/Martin Property project is located on a high upland terrace, today an area of dense residential development interspersed with remnant farms. Perennial streams flow through the valleys bordering the terrace, the Green River (formerly the Green and White rivers) 0.75 to 1 mile south and west of the proposed project and Big Soos Creek 0.5 mile to the east. Smaller intermittent and perennial streams, fed by groundwater and wetland areas, dissect the terrace edges, one extending to within 0.1 mile of the present project. Knowledge of environmental conditions through time allows the researcher to judge the probability for human occupation and activities in the area, predict cultural site preservation, and explain observed site conditions. The geology, geomorphology, flora, and fauna of the project area are summarized below. Geology Archaeological evidence indicates that the Pacific Northwest was occupied by humans soon after land emerged at the end of the last glacial retreat. Following retreat of the continental ice sheet, changes induced by processes such as global sea-level rise, climatic warming, earthquakes and associated volcanic activity continued to shape the landscape and influence the people who resided in the Puget Lowland. These processes affected the distribution of potential resources and contributed to the creation of landforms suitable for human occupation. The same changes have been responsible for altering the physical character of the archaeological record itself by selectively preserving or destroying sites that contain evidence of how people lived. r"1 Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 5 The project is in the Puget Lowland, an elongated trough and structural depression oriented on a north-south axis, bordered on the east by the Cascade Mountains and on the west by the Olympic Mountains. The surface is characterized by rolling low relief topography that is interrupted by deeply incised ravines with elevation generally within 500 feet of sea-level (Troost and Stein 1995). The uplands are separated by large troughs that are now occupied by the marine waters of the Puget Sound and large freshwater lakes (Galster and Laprade 1991, Liesch et al. 1963, Yount et al. 1993). The topography and surficial geology of the Puget Lowland is the result of multiple continental glaciations that extended south from Canada through the Puget Lowlands during the Pleistocene epoch (1.8 million to 10,000 years ago). The latest glacial maximum, known as the Vashon Stade of the Fraser glaciation, ended abruptly about 14,500 years before the present (BP) with the onset of climatic warming (Easterbrook 1993). The Puget lobe of the ice sheet reached its maximum southern extent near the town of Centralia, about 50 miles southeast of Auburn (Booth et al. 2003, Porter and Swanson 1998). The low-lying portions of the region are mantled by thick unconsolidated deposits that form a sequence of Quaternary glacial and interglacial deposits overlying pre-Tertiary and Tertiary bedrock (Mosher and Hewitt 2004). Vashon-aged glacial deposits in the project vicinity include outwash, till, glaciolacustrine and ice contact deposits. The till and outwash have been formed into a hummocky topography on the upland ridges, with glacial landforms such as kame hills and kettle lakes. Older interglacial deposits are exposed along the steep-sided valley walls of Big Soos Creek and the Green River, below the Vashon-aged sediment (Booth et al. 2004). Global sea-level was considerably lowered during the last glacial maximum because of the tremendous amounts of water locked up in the ice sheets. When the ice sheets began to melt, global sea-level began to rise. The Puget lobe of the Cordilleran ice sheet retreated past the Admiralty Inlet, near Whidbey Island, by about 13,500 BP (Dethier et al. 1995, Mosher and Hewitt 2004). Prior to 13,500 BP, large glacial lakes formed south of the ice front because meltwater from the retreating ice was dammed in the Puget Lowland by the ice. The glacial lakes drained south through a series of spillways that emptied into the ancestral Chehalis River (Thorson 1989, Waitt and Thorson 1983). Marine water flooded the Puget Lowland after the dam at the Admiralty Inlet was breached during ice recession, forming deep marine embayments at what are now Commencement Bay at Tacoma and Elliott Bay at Seattle (Thorson 1989). After the glacial lakes drained and the Puget Lowland was freed from the weight of the ice and meltwater, the land began to rebound. The rate of isostatic rebound was faster than continued global sea-level rise in the Puget Sound, therefore the elevation of relative sea-level was up to 60 meters lower between about 13,500 and 9,000 BP. The amount of isostatic rebound that occurred was dependent upon the thickness of ice that had once been present, ranging from minimal in the project vicinity to almost 230 feet (70 meters) near Bellingham (Booth et al. 2003). Isostatic rebound slowed around 9,000 BP and continued global sea-level rise drowned the early Holocene shorelines (Dragovich et al. 1994). Sea-level rose very rapidly between 9,000 and 7,000 years ago, after which, the rate of sea-level rise slowed. During this period the present Duwamish and lower Green river valleys were inundated by seawater, forming the Duwamish embayment. By the middle Holocene the Duwamish embayment extended nearly to present-day Auburn (Dragovich et al. 1994, Downing 1983). The White and Green rivers flowed into the Duwamish embayment and Holocene sea-level rise renewed deltaic sedimentation and aggradation at their mouths (Crandell 1965, Dragovich et al. 1994). Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 6 Other geologic events, such as lahars, also affected the Duwamish embayment. About 5,700 BP, the upstream portion of the ancient White River valley was filled by the Osceola Mudflow, a lahar that originated on the summit and northeastern flank of Mount Rainier (Zehfuss et al. 2003, Dragovich et al. 1994). After passing through the White River gorge, the Osceola Mudlfow covered glacial drift valleys and outwash plains before spilling into the Green and Puyallup drainages and flowing onto the floor of the Puget Sound from Auburn to Renton. The mudflow, as much as 100 feet thick, contained unsorted and unstratified clay-rich silt, sand, gravel, cobbles, and boulders (Crandell 1963, Dragovich et al. 1994, Mullineaux 1970). The White River delta then prograded rapidly to the north at an average rate of 9 meters a year as a result of the upstream erosion of the lahar and downstream deposition of the runout. The delta front reached Tukwila by about 2200 BP and the Seattle area by about 1100 BP (Zehfuss et al. 2003, Barnhart et al. 1998, Pringle and Scott 2001). The sediments within the Green and White river valleys in the project vicinity are runout sands overlying estuarine mud that contains a thick layer of Osceola Mudflow. Since the lahar, the valley floor has aggraded due to Holocene sea- level rise and infilling. North-to-south structural shortening of the Puget Lowland is a result of northward migration of the Pacific Plate as it moves in a strike-slip relationship with the North American Plate. Although movement on the plate boundary does not usually cause fault ruptures at the surface in the Puget Lowland, deep earthquakes do cause uplift and subsidence in the different basins and arches of the Puget Sound region (Johnson et al. 2004). Significant amounts of shaking and related landslides and delta liquefaction can also occur. The project area is approximately 20 miles south of the Seattle Fault Zone (SFZ), one of a series of shallow faults that occur perpendicular to the plate boundary. Holocene earthquake activity on the SFZ is suggested by more than 16 feet (5 meters) of uplift that occurred south of the fault around 1,100 BP (Bucknam et al. 1992, Thorson 1993, Blakely et al. 2009, Johnson et al. 1994; Brocher et al. 2001). Any archaeological materials that may be present in the project area may have been affected by vertical movement or shaking as a result of the tectonic setting. The net result of Holocene tectonic activity in the project area is uplift, although an exact value for vertical movement at Auburn has not yet been determined. Geomorphology At Auburn, the Green River emerges from the Green River Valley and enters the much larger Kent Valley, which was created by glacial action during the Pleistocene ice ages, then filled in by river alluvium and lahars from Mount Rainier. After flowing generally west from its source, the river turns north at Auburn, entering a zone of light-industrial and retail development. Historically, the White River joined the Green River in Auburn and they joined the Black River at Tukwila. The White, Green and Black Rivers were called the Duwamish River north of their confluence. A log and debris jam during a flood diverted the White River into the Puyallup River drainage network in 1906 (Zehfuss et al. 2003). Opening of the Lake Washington Ship Canal in 1916 caused the lake's level to drop nearly nine feet and the Black River to run dry so that the point of the name change from Green to Duwamish is no longer a confluence of rivers. Thus, the Green River now simply becomes the Duwamish River near Tukwila. Dams, levees, and barriers were built along the upper reaches of the White and Green Rivers in hopes of preventing additional major flooding. Holocene deposits in the project area consist of marsh and peat deposits in depressions on the uplands, colluvium on and along the bases of hillslopes, and alluvium in the Green River and Big Soos Creek valleys (Dragovich et al. 1994). Fill or modified land has also been mapped in Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 7 the project vicinity; none, however, is in the proposed project area (Snyder et al. 1973). Soil distributions are described on the basis of shared traits such as parent material, organic content, landform, texture, color, slope, aspect, and moisture (Snyder et al. 1973, Birkeland 1999). Soils formed in glacial sediments dominate the project vicinity. Alderwood gravelly sandy loam is mapped in the project area, which is a soil that forms on till plains or moraines in basal till with an ash component (Snyder et al. 1973). Other soils mapped nearby include Everett gravelly sandy loam that forms on terraces in glacial outwash and Norma sandy loam that forms in alluvium. Flora and Fauna Prior to logging and modern development, the project vicinity was covered with dense forests of western hemlock, western red cedar, and Douglas fir, interspersed with open marshlands and grassy prairies. Plants of particular economic significance to Native American residents included red cedar, camas, salal, huckleberry, blackberry, and a variety of other wild fruits. The Green River and Big Soos Creek provided runs of anadromous salmon, as well as resident fish species, resources on which Native American people depended heavily for subsistence. A variety of economically significant large mammals also occurred in the area, including blacktail deer, elk, black bear, bobcat, and beaver (Franklin and Dyrness 1988:44, 45, 70; Suttles 1990:26; Washington Department of Ecology 2010). CULTURAL SETTING Precontact Period Archaeological evidence documents more than 11,000 years of human occupation in western Washington. The Manis Mastodon site (45CA218), near Sequim on the northern Olympic Peninsula, produced the remains of a butchered mastodon, radiocarbon dated to approximately 11,850 years before present (BP). A pointed bone object, believed to be a projectile point of human manufacture, was embedded in the mastodon's rib, although partial healing around the point ruled it out as the cause of death. Additional pointed bone artifacts, modified tusk and bone, and cobble flake tools were found with the mastodon remains. The date of the Manis site corresponds with that of the Clovis culture, highly mobile hunting and foraging peoples who ranged across North America during the late Pleistocene, following the herds of big game animals. Fluted chipped stone projectile points, typical of Clovis culture, have been found at several locations in western Washington, including the Olympia area, the Chehalis River Valley, and Whidbey Island (Morgan 1999:3.1; Rooke et al. 2002:16). Olcott sites, characterized by large willow or laurel leaf-shaped projectile points and flake tools manufactured from locally available cobbles, have been identified in the region, sites believed to date between 9,000 and 5,000 BP. These sites, typically found in the uplands or on secondary stream terraces some distance from marine shorelines, probably represent large mammal hunting camps. Olcott sites have been found throughout western Washington, including the Chehalis area, two sites near Everett, the upper Cowlitz River, the upper Cedar River, Sequim, and Lake Cushman. Although most of these sites remain undated by absolute means, site 45KIl25 on the upper Cedar River yielded a radiocarbon date of 8540 110 years (Burtchard 2003:18; Morgan 1999:3.4; Rooke et al. 2002:16). Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property g By 5,000 BP post-glacial fluctuations in sea level had stabilized, allowing productive environments to become established in the littoral zones. The climate had achieved its modern character by this time and dense coniferous forests blanketed the land. Human populations expanded during the period and people began to exploit a greater variety of resources, including large and small mammals, fish, shellfish, roots, and berries. Evidence of buildings and hearths are common in archaeological sites dating to this period; ground stone, antler tools, and small triangular projectile points were in use, along with fishing and sea mammal hunting technologies; and deep extensive shell middens appear, all evidence of residential and subsistence change (Morgan 1999:3.7; Rooke et al. 2002:16, 17). By at least 3,000 BP groups of people had begun to follow a seasonal round, moving between permanent village sites and favored resource collection locations as plant and animal foods become available. In time the seasonal round became the norm, accompanied by improved resource collection and storage technologies. By the time of European contact Native peoples' diets comprised a variety of foods and salmon had emerged as a dietary staple (Morgan 1999:3.8-3.11; Nelson 1990:481, 482). Ethnographic Period At the time of European contact, numerous small autonomous groups of Lushootseed-speaking Coast Salish people inhabited the Puget Sound region. These Native American people generally made their homes along marine waterways or major rivers that served as convenient transportation corridors as well as rich resource procurement areas. Primary residences usually consisted of substantial split-plank buildings at permanent village sites, while temporary camps provided shelter during seasonal fishing, hunting, and gathering trips. Although villages in the region retained political autonomy, trade, marriage, and mutual ceremonies created bonds between neighboring groups (Castile 1985; Suttles and Lane 1990). Although Coast Salish peoples in the southern Puget Sound region shared a common language and similar cultural patterns, groups living on different rivers or waterways often spoke different dialects and were perceived as distinct from one another. Ethnographic and historical sources identify Native American people resident along the Green River as the Skwupabsh (also spelled Skopamish), meaning "Green River people" (Lane 1973a:iii; Thrush 2005:5-10). Native Americans in the White River valley were the St'kamish (Sekamish) and were sometimes grouped with Puyallup or Duwamish people who lived along connecting river systems (Spier 1936:33, 34). At least seven permanent villages are reported ethnographically along the Green River, including Yilal-qo ("confluence") at the juncture of the Green and White Rivers, 1.5 miles west of the present project, and Sus ("face") along lower Big Soos Creek, 0.5 mile southeast of the project (Thrush 2005:22-25). Early twentieth century ethnographer, T. T. Waterman, recorded additional Lushootseed place names in the vicinity: Tet5'1gs ("backwater") a place where the Green River is very deep and quiet between the Green-White river confluence and Big Soos Creek, SkgE'bEd ("to shelter"), a village site on the Green River one mile east of Big Soos Creek, and Ts31a'swiltu, a place on the east bank of the river, just below the Green-White river confluence (Waterman et al. 2001:49, 143, 147, 157, 158). The Green River and its tributary streams served as a major fishery for local Native American residents; several fish weirs were reportedly located on the Green River in the present project vicinity, including one near the Yilal- Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 9 qo village, one in the Auburn Narrows below Big Soos Creek, and one just upstream from Big Soos Creek (Ballard 1957; Lane 1973b:7, 15, 16, Appendix; Thrush 2005:26). The first documented contact between Native American residents of the region and Europeans occurred in May 1792 as British sea captain George Vancouver led an exploratory party through Puget Sound, past the sites of present-day Seattle and Tacoma. Vancouver's journal documents numerous encounters with Native American people, some of whom were living in temporary camps while harvesting roots or shellfish. Meetings between local Native Americans and the European visitors were generally amicable with both sides offering gifts and attempting to communicate through gestures and pantomime (Blumenthal 2004:153-163). Although several decades probably passed before Europeans again visited the area, exotic epidemic diseases swept through the region during this period, decimating Native populations and creating profound disruption in existing social and cultural patterns (Suttles and Lane 1990:499- 501). History In 1833, with construction of the Hudson's Bay Company's Fort Nisqually at the southern end of Puget Sound, a permanent European presence was established in the region and trade goods became widely available (Suttles and Lane 1990:499). Euroamerican settlers soon followed the fur traders, attracted by rich timberlands and low-cost farmlands. The first settlers in the project vicinity, Dominick Corcoran and James Riley arrived on Muckleshoot Prairie, five miles south of the present project, in the fall of 1853. The two men selected adjacent parcels of land under the Donation Land Claim Act of 1850, a law that encouraged settlement by legalizing claims on unsurveyed lands (Denny 1908:48; General Land Office [GLO] 1874a, 1874b; Seattle Genealogical Society [SGS] 1980:136). Within a year, Harvey and Eliza Jones settled on a Donation Land Claim just north of the confluence of the Green and White rivers, 1.5 miles west of the present project, and the following year four more individuals or families settled DLCs in that area (GLO 1868; SGS 1980:108, 112, 119, 143, 146). As Euro-Americans took up residence in the Puget Sound region, Native people's claims to their ancestral lands became an increasingly contentious issue. During the 1850s, Washington Territorial Governor Isaac Stevens convened councils with various Native American groups for the express purpose of extinguishing Indian title to the land. Native Americans from the Green and White river area, who would later form the Muckleshoot Tribe, were included in the Medicine Creek Treaty of 1854 and the Point Elliott Treaty of 1855. Under pressure, Native American representatives (or people assumed to be representatives) signed the treaties, ceding their ancestral lands to the federal government in exchange for small reservations, retention of fishing rights, cash payments, and other considerations (Lane 1973a:36-42; Lane and Lane 1977:28, 32; Marino 1990:169-171; Royce 1899:798-801; Ruby and Brown 1992:139-141). A period of unrest followed signing of the treaties, as some Native Americans attempted to resist the Euroamerican invaders. Both sides-Native American and Euroamerican- experienced casualties during the conflict, and historical records report that many Euroamericans living near the confluence of the Green and White rivers were killed (GLO 1868; SGS 1980:108, 112, 119, 143, 146; Marino 1990:171, 172). By late 1856 the U.S. military had quelled the conflict and, in time, Euroamerican settlers again began to enter the region. In 1867, during federal government surveys of the present project area, a number of settlers were noted near the juncture of the Green and White rivers, a schoolhouse had been built, and wagon roads connected the area with Puyallup and Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 10 Muckleshoot Prairie. An "Indian town" with a population of "about 100 inhabitants" remained at the river confluence despite nearby Euroamerican settlement. Although the government surveyors noted no cultural features atop the terrace in the Lea Hill Park/Martin Property area, a trail connecting the Native American town at the river confluence with Meridian Prairie passed 0.2 mile south of the present project (GLO 1867a, 1867b). Regular rail service between the Puyallup valley and Seattle was started in 1886 via a branch of the Northern Pacific railroad, and the following year the village of Slaughter, named for a U.S. Army lieutenant killed during the 1855-1856 conflict, was platted along the route (Bagley 1929:309-314, 712). The railroad connected the fledgling town with major population centers, providing market outlets for local forest and agricultural products and reducing the residents' isolation. As immigration to the area accelerated, Slaughter expanded its services to meet the needs of the growing population. Demand for a more agreeable name grew with the town and, in 1893, the community was renamed Auburn. In 1900 the Northern Pacific built a railroad spur line connecting Auburn with an existing cross-Cascades route, and in 1913 Auburn was selected as the Northern Pacific's western freight terminus. The following year the town of Auburn was incorporated (Bagley 1929:713; Meany 1923:10, 11). History of Lea Hill Park/Martin Property In August 1867, the federal government conducted initial cadastral surveys of the present project vicinity, providing what are probably the earliest written descriptions of the area. The surveyors noted rolling and broken land covered with old growth forest: firs and cedars up to 40 inches in diameter, with an understory of vine maple, salal, and fir saplings. No cultural features were observed (GLO 1867a, 1867b). Following government surveys, lands in the area were opened to homesteading and other types of land entry. The present project left the Public Domain in 1895 as part of a 900,000-acre federal grant to the Northern Pacific Railroad Company, lands to be sold by the railroad as compensation for rail line construction (Bureau of Land Management [BLM] 2009a, 2009b, 2010). Historical maps, surveyed in 1894-1895, show a road immediately north of the project area, part of present SE 316`h Street, and a number of buildings to the north and east (Figure 3). No structures are shown in the present project area, but most of the Martin Property had been cleared of trees (U.S. Geological Survey [USGS] 1900a, 1900b). By 1936, Metsker maps identify the Martin Property owner as A. S. Scrase, and Lea Hill Park is shown as part of a 20- acre parcel owned by a P. C. Kofort. At some point the Martin Property was cleared of stumps, allowing the parcel to be farmed. The land was subsequently planted to strawberries and irrigated with well water. An early owner or resident may have been named Flush and a later owner was a Mr. Tuck (Marcie Martin, personal communication 2010). In 1958 Bob and Marcie Martin, purchased the 10 acre Martin Property from Mr. Tuck. A small "shack" stood on the property when they arrived, and the Martins built onto it, creating a home for themselves and their three children. A small barn and woodshed were also on the property when the Martins bought it, and the family used these buildings for their Hereford cattle operation. The area was still rural in the late 1950s, and the Martin Property was surrounded by small farms, 10 to 20 acres in size. After living on the property for some years the Martins moved all the buildings, including the house, barn, and woodshed, to a lot a few blocks away. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 11 aP m ,.~z,, f 1 r~ 'IF fit L r' 1~ 7 'r 4 r ~ ~ rt s a~ I ~ 1 .._.»......,.Y. r $y,✓ it '"y=~,d"~ ~d r Project Area t ....n.r A f~ d ~ti^ ~ 'y kb A;t r » ers 1'000 USGSTacorna, Wa,11125;000 scale Quad., 1900 _t -°0~feget :,.4000 Figure 3. Historical map showing roads and buildings in the project vicinity, 1900. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 12 They bought a trailer house to live in and began construction of new buildings on their property. The new cattle barn, described in County Assessor's records as a loafing shed, was completed about 1970-1971, the new detached garage was built around 1975, and the house was completed on the site of the old residence around 1978. These three buildings remain on the property today (Figure 4); the trailer house has been removed (King County Assessor 1978, 2010; Marcie Martin, personal communication 2010). Green River Community College traces its roots to 1945, when the Auburn School District started an evening adult education program. The program's success prompted local residents to lobby the Washington State Board of Education for a community college, a dream that was realized in 1965 with construction of the present facility (Green River Community College 2010). Around the same time, developers acquired lands in the project vicinity and began to build high density housing developments. The new residents needed recreation facilities and, in 1968, King County voters approved a bond for purchase of park land in the area. The park was named Lea Hill Park after the adjacent housing development. Park developments included two ball fields, tennis courts, and two small parking lots, and park users came from nearby residential areas and Green River Community College. In 2002 King County transferred ownership of the park to the City of Auburn, and the City has since operated the park in cooperation with GRCC (Figure 5) (City of Auburn 2010). Today Green River Community College serves more than 6,000 students every quarter. Over the years, anticipating future expansion, the College approached Bob and Marcie Martin with offers to purchase their land; parcel by parcel the Martins agreed to sell, and today the entire Martin Property is owned by GRCC. In 1998 the College built a student daycare facility on a R Figure 4. Overview of the Martin Property, May 2010; view to the northwest. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 13 a A Figure 5. Overview of Lea Hill Park, May 2010; view to the south. portion of the Martin Property. Demographics in the Lea Hill area have shifted through the years and Lea Hill Park no longer adequately serves the community's needs. The park is in need of extensive upgrade and repairs, and the 45-year-old GRCC Trades and Industry Building is also scheduled for replacement. Therefore, GRCC plans to build a new Trades and Industry facility on the present Lea Hill Park site and, in exchange, develop a new community park on the Martin Property (City of Auburn 2010; King County Assessor 2010; Marcie Martin, personal communication 2010; Whale 2010). PREVIOUS CULTURAL RESOURCE INVESTIGATIONS Ten cultural resource surveys have previously been conducted within one mile of the Lea Hill Park/Martin Property project. These investigations are summarized in Table 1. Although most of the surveys assessed lands on the Green River or Big Soos Creek valley floors, three included areas at the edges of high terraces overlooking the streams: 1988 survey of State Route (SR) 18 prior to widening of the highway (Rice 1988), 1989 survey of a proposed waste water pipeline route along SR 18 (Miss 1989), and 2002 survey of a proposed cell tower site on the bluff east of the Big Soos Creek-Green River confluence (Cooper 2002a). Cultural resources were identified within one mile of the present project only in the proposed cell tower area: chipped stone artifacts were recovered between 40 and 80 cm below the ground surface from 11 of 13 excavated shovel probes. The site, assigned Smithsonian number 45KI511, was recommended eligible for the National Register of Historic Places (NRHP) (Cooper 2002b, 2002c). Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 14 Table 1. Previous Cultural Resource Investigations within Approximately One Mile of the Project Area. AUTHOR DATE PROJECT RELATION TO RESULTS* APE Robinson 1982 L-7227 SR18-SR 164 to Black Diamond Interchange, Auburn 0.3 mi E None Rice 1988 A Survey for Cultural Resources along the Route of SR 18 Between 0.3 mi E None Green River and the Issaquah-Hobart Road Intersection Miss 1989 Cultural Resources Reconnaissance of Proposed City of Black 0.5 mi E None Diamond Wastewater Pipelines Hicks 1991 A Cultural Resource Assessment of Selected King County Parks 0.5 mi SE None Properties Stallings 1994 Letter Report: Southeast 320th Tightline/Retrofit and Stream 0.3 mi E None Restoration Cooper 2002 Letter Report: Cultural Resources Sprint SE54X0004B/Site 45KI511 1 mi SE 45KI511 New Monopole Miss 2004 Letter Report: Auburn Narrows Wetland Construction and Discovery of 1 mi S 45KI697 Archaeological Site 45-KI-697 Parvey and 2005 Letter Report: Soos Creek Large Woody Debris Placement Project 0.5 mi S None Hodges Hoyt et al. 2009 Pautzke Levee Setback Cultural Resources Project 1 mi SW None *Newly recorded cultural material identified within one mile of project area. Five cultural resources have previously been recorded within 1.5 miles of the Lea Hill Park/Martin Property project: previously described site 45KI511; 45KI697, a small pre-contact hearth near the confluence of Green River and Big Soos Creek (Miss 2004); 45K1293, a pre- contact hearth exposed in a cutbank on the second terrace above Big Soos Creek (Miss 1987a); 45K1292, a hand-dug well and concrete stock watering tank (Miss 1987b); and 45KI826, an historical homestead with a concrete foundation, scattered artifacts, and a fence line (Hoyt and Harrison 2008). These resources are summarized in Table 2. The proposed project will not affect or impact any of these resources, either directly or indirectly. Table 2. Previously Recorded Sites within 1.5 Miles of the Project Area. SITE NO. COMPILER/DATE AGE DESCRIPTION RELATION TO APE 45KI292 Miss 1987 Historic Well and concrete tank 1.1 mi NW 45KI293 Miss 1987 Pre-contact Pre-contact hearth 1.3 mi NE 45KI511 Cooper 2002 6,000-2,500 BP Pre-contact occupation 1.0 mi SE 45KI697 Miss 2004 Pre-contact Pre-contact hearth 0.9 mi S 45KI826 Hoyt and Harrison 2008 1895-1958 Farmstead 1.3 mi SW EXPECTATIONS The project is situated on a high terrace more than 300 vertical feet above the Green River and more than 200 feet above Big Soos Creek, both major perennial streams with documented pre- contact and ethnographic period Native American use. Terrace edges are high probability areas for Native American activity, as demonstrated by recently identified site 45KI511. The present project is approximately 0.3 mile from the edge of the terrace, on relatively level to gently rolling land. A small perennial tributary of Big Soos Creek heads atop the terrace 0.2 mile east of the project area. The shallow draw in which the stream flows continues west, then northwest, through the project area. This section of the draw may have held a stream in the Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 15 past, and wetlands still fill portions of the drainage in southeastern Lea Hill Park and the southwestern corner of the Martin Property. Native American people may have followed the unnamed tributary stream into the uplands for hunting and plant gathering, ephemeral activities that tend to leave little lasting evidence. A source of surface water in the project area increases the probability of camping or resource processing in the area, locations that can often be recognized archaeologically because of concentrated cultural materials. The project area, then, has a moderate probability for pre- contact, ethnographic, or early historical period Native American resources. Extensive historical period and modern disturbance, however, decreases the chance of encountering intact cultural deposits. Sediments in the project area have been mapped as Alderwood gravelly sandy loams, soils formed in glacial till. Cultural materials, if present, would be expected in near-surface deposits, generally in the upper 2 to 2.5 feet, since glacial action would have erased evidence of earlier human occupations. More deeply buried cultural deposits could occur in areas bordering the draw, where flooding may have deposited alluvial sediments. All buildings and structures in the Lea Hill Park/Martin Property project area are less than 50 years old. Park structures date to 1968 or later, since they were built following acquisition of the park land. Buildings on the Martin property date to 1970 at the earliest, the year construction was begun on the barn, following removal of existing buildings. None of these buildings or structures are architecturally or historically exceptional. No additional buildings or structures are immediately adjacent to the project area. Although early residents may have buried refuse or other debris, surface dumping was a widespread and accepted practice in the late nineteenth and early twentieth centuries. Refuse was typically dumped in less visible parts of a property, or in marshes, gulleys, or stream valleys. Debris features, however, were often cleaned up as suburbia replaced farmlands. Therefore the probability of encountering historical period features in the project area is rather low. RECOMMENDATIONS Under SEPA, agencies are required to consider likely environmental consequences before approving proposed development projects. Based on NWAA's research and reconnaissance of Lea Hill Park and the Martin Property, there are no buildings or structures 50 years or older that require further study and consideration as significant historical properties. To ascertain if archaeological resources, that would be considered under SEPA, are present, NWAA recommends a systematic archaeological survey of Lea Hill Park and the Martin Property. The survey should include examination of the ground surface and excavation of shovel probes to examine subsurface deposits and identify cultural material. Shovel probes would be focused on the well-drained areas near the draw that extends from the southeastern corner of Lea Hill Park to the southwestern corner of the Martin Property where the likelihood for cultural material is higher. 1001*1 Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 16 REFERENCES Bagley, Clarence B. 1929 History of King County, Washington, vol. I. The S. J. Clarke Publishing Company, Seattle, Washington. Ballard, Arthur C. 1957 The Salmon Weir on the Green River in Western Washington. Davidson Journal of Anthropology 3(1):37-54. Barnhardt, Walter A., Robert E. Kayen, Joe D. Dragovitch, Steven P. Palmer, Patrick T. Pringle, and Brian F. Atwater 1998 Geology of Holocene Deltas at Puget Sound, Washington. In Proceedings, Eight International Congress, International Association for Engineering Geology and the Environment, edited by D. Moore and O. Hungr, pp. 1857-1863. Birkeland, Peter W. 1999 Soils and Geomorphology (3rd Edition). Oxford University Press, New York, New York. Blakely, Richard J., Brian L. Sherrod, Jonathan F. Hughes, Megan L. Anderson, Ray E. Wells,. and Craig S. Weaver 2009 Saddle Mountain Fault Deformation Zone, Olympic Peninsula, Washington: Western Boundary of the Seattle Uplift. Geosphere 5 (2): 105-125. Blumenthal, Richard W. (editor) 2004 The Early Exploration of Inland Washington Waters: Journals and Logs from Six Expeditions, 1786-1792. McFarland & Company, Jefferson, North Carolina. Booth, Derek B., Kathy Goetz Troost, John J. Clague, and Richard B. Wait 2003 The Cord illeran Ice Sheet. Developments in Quaternary Science 1:17-43. Booth, D. B., H. H. Waldron, and K. G. Troost 2004 Geologic Map of the Poverty Bay 7.5' Quadrangle, King and Pierce Counties, Washington. Scientific Investigations Map 2854. U.S. Department of the Interior, U. S. Geological Survey, Washington, D.C. Brocher, T.M., T. Parsons, R. J. Blakely, N. I. Christensen, M. A. Fisher, R. E. Wells, and the SHIPS Working Group 2001 Three-dimensional Geometry of Crustal Faults, Basins, and Uplifts in Puget Lowland, Washington; Results from SHIPS, the 1998 Seismic Hazards Investigation in Puget Sound. Journal of Geophysical Research 106(B7):13541-13564. Bucknam, Robert C., Eileen Hemphill-Haley, and Estella B. Leopold 1992 Abrupt Uplift Within the Past 1700 Years at Southern Puget Sound, Washington. Science 258: 1611-1614. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 17 Bureau of Land Management (BLM) 2009a Historic Index, T. 21 N., R. 5 E., W.M. Electronic document, http://www.blm.gov/ or/landrecords/survey/ySrvy1.php, accessed April 30, 2010. 2009b Master Title Plat, T. 21 N., R. 5 E., W.M. Electronic document, http://www.blm.gov/ or/landrecords/survey/ySrvy1.php, accessed April 30, 2010. 2010 The Official Federal Land Records Site. 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On file, Department of Archaeology and Historic Preservation, Olympia, Washington. 2002c National Register of Historic Places Registration Form: The Holgate Site (45KI511). On file, Department of Archaeology and Historic Preservation, Olympia, Washington. Crandell, Dwight R. 1963 Surficial Geology and Geomorphology of the Lake Tapps Quadrangle, Washington. Professional Paper 388-A. U. S. Geological Survey, Washington, D. C. 1965 The Glacial History of Western Washington and Oregon. In The Quaternary of the United States, edited by H. E. Wright and D. G. Frey, pp. 341-353. Review Volume for the VII Congress of the International Association for Quaternary Research. Princeton University Press, Princeton, New Jersey. Denny, Arthur A. 1908 Pioneer Days on Puget Sound. The Alice Harriman Co., Seattle, Washington. Northwest Archaeological Associates Inc. 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Oregon State University Press, Corvallis, Oregon. Galster, R. W., and W. T. Laprade 1991 Geology of Seattle, Washington, United States of America. Bulletin of the Association of Engineering Geologists 28(3): 239-302. General Land Office (GLO) 1867a Surveyor's Field Notes, T. 21 N., R. 5 E., W.M. Electronic document, http://www.blm.gov/or/landrecords/survey/ySrvyl.php, accessed April 30, 2010. 1867b Official Plat, T. 21 N., R. 5 E., W.M. Electronic document, http://www.blm.gov/or/landrecords/survey/ySrvy1.php, accessed April 30, 2010. 1868 Plat-Donation Land Claims, T. 21 N., R. 5 E., W.M. Electronic document, http://www.blm.gov/or/landrecords/survey/ySrvy1.php, accessed April 30, 2010. 1874a Surveyor's Field Notes-Muckleshoot Indian Reservation, T. 20 and 21 N., R. 5 E., W.M. Electronic document, http://www.blm.gov/or/landrecords/survey/ySrvy1.php, accessed June 17, 2009. 1874b Official Plat-Muckleshoot Indian Reservation, T. 20 and 21 N., R. 5 E., W.M. 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Chobot, and Paula Johnson 2009 Pautzke Levee Setback Cultural Resources Project, King County, Washington. Submitted to King County Water and Land Resources Division. Paragon Research Associates, Seattle, Washington. Hoyt, Bryan and James B. Harrison, III 2008 Washington State Archaeological Site Inventory Form, 45K1826, North/Fenster Farmstead. On file, Department of Archaeology and Historic Preservation, Olympia, Washington. Johnson, Samuel Y., Richard J. Blakely, William J. Stephenson, Shawn V. Dadisman, and Michael A. Fisher 2004 Active Shortening of the Cascadia Forearc and Implications for Seismic Hazards of the Puget Lowland. American Geophysical Union. Tectonics 23: 1-27. Johnson, S. Y., C. J. Potter, and J. M. Armentrout 1994 Origin and Evolution of the Seattle Fault and Seattle Basin, Washington. Geology 22: 71-74. King County Assessor 1978 County assessor's office historical records, [tax parcels 0921059018, 0921059228, 0921059229, 0921059020]. 1978 and earlier. 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Walters 1963 Geology and Ground-Water Resources of Northwestern King County. Washington Water Supply Bulletin 20. Division of Water Resources, Department of Conservation, Olympia, Washington. Marino, Cesare 1990 History of Western Washington since 1846. In Northwest Coast, edited by Wayne Suttles, pp. 169-179. Handbook of North American Indians, Vol. 7, William C. Sturtevant, general editor, Smithsonian Institution, Washington, D.C. Martin, Marcie 2010 Marcie Martin, former owner and current resident of the Martin Property. Personal communication with Ann Sharley, NWAA Archaeologist/Architectural Historian, May 4 (telephone) and May 5 (on-site, Martin Property). Meany, Edmond S. 1923 Origin of Washington Geographic Names. University of Washington Press, Seattle, Washington. Metsker, Chas. F. 1936 Metsker's Map of King County, State of Washington. Chas. F. Metsker, Tacoma, Seattle, or Portland, Washington. Miss, Christian J. 1987a Washington State Archaeological Site Inventory Form, 45K1293. On file, Department of Archaeology and Historic Preservation, Olympia, Washington. 1987b Washington State Archaeological Site Inventory Form, 45K1292. On file, Department of Archaeology and Historic Preservation, Olympia, Washington. 1989 Cultural Resources Reconnaissance of Proposed City of Black Diamond Wastewater Pipelines, King County, Washington. Prepared for Jones & Stokes Associates, Inc. Northwest Archaeological Associates, Inc., Seattle, Washington. 2004a Letter Report: Auburn Narrows Wetland Construction and Discovery of Archaeological Site 45-K/-697. Submitted to U.S. Army Corps of Engineers. Northwest Archaeological Associates, Inc., Seattle, Washington. 2004b Washington State Archaeological Site Inventory Form, 45K1697, Auburn Narrows Hearth. On file, Department of Archaeology and Historic Preservation, Olympia, Washington. Morgan, Vera E. 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U.S. Government Printing Office, Washington, D.C. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 22 Ruby, Robert H., and John A. Brown 1992 A Guide to the Indian Tribes of the Pacific Northwest. University of Oklahoma Press, Norman, Oklahoma. Seattle Genealogical Society (SGS) 1980 Washington Territory Donation Land Claims. Seattle Genealogical Society, Seattle, Washington. Snyder, Dale E., Philip S. Gale, and Russel F. Pringle 1973 Soil Survey of King County Area, Washington. Prepared by the Soil Conservation Service in cooperation with the Washington Agricultural Experiment Station for the United States Department of Agriculture. Spier, Leslie 1936 Tribal Distribution in Washington. General Series in Anthropology, No. 3. George Banta Publishing Company, Menasha, Wisconsin. Stallings, Rachel 1994 Letter Report: Southeast 320th Tightline/Retrofit and Stream Restoration (BOAS No. 9308 3a). Submitted to King County Department of Public Works. BOAS, Inc., Seattle, Washington. Suttles, Wayne 1990 Environment. In Northwest Coast, edited by Wayne Suttles, pp. 16-29. Handbook of, North American Indians, Vol. 7, William C. Sturtevant, general editor, Smithsonian Institution, Washington, D.C. Suttles, Wayne, and Barbara Lane 1990 Southern Coast Salish. In Northwest Coast, edited by Wayne Suttles, pp. 485-502. Handbook of North American Indians, Vol. 7, William C. Sturtevant, general editor, Smithsonian Institution, Washington, D.C. Thorson, R. M. ' 1989 Glacio-Isostatic Response of the Puget Sound Area, Washington. Geological Society of America Bulletin 101: 1163-1174. Thorson, Robert M. 1993 Postglacial Offset along the Seattle Fault. Science 260 (5109): 825-826. Thrush, Coll 2005 The Skwupabsh and Their River: A Tribal History of the Green River Watershed from the Auburn Narrows to the Cascade Crest. Muckleshoot Indian Tribe, Auburn, Washington. Troost, K. G. And J. K. Stein 1995 Seismic and Aseismic Submergence of Archaeological Deposits in the Past 4,000 Years at Seattle, Washington. Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property... 23 U.S. Geological Survey (USGS) 1900a Land Classification Sheet, Tacoma Quadrangle. 30 Minute Series. U.S. Geological Survey, Washington, D.C. Early Washington Maps: A Digital Collection, Washington State University, Pullman, Washington: 1900b Tacoma. 30 Minute Series. U.S. Geological Survey, Washington, D.C. Early Washington Maps: A Digital Collection; Washington State University, Pullman, Washington. Waitt, R. B., Jr., and R. M. Thorson 1983 The Cordilleras Ice Sheet in Washington, Idaho, and Montana. University of Minnesota, Minneapolis, Minnesota. Washington Department of Ecology 2009 State Environmental Policy.Act (SEPA). Electronic document, http://www.ecy.wa. gov/programs/sea/sepa/,.accessed September 21, 2009. 2010 Focus on Soos Creek Watershed. Electronic document, http://www.ecy.wa. gov/pubs/0910003.pdf, accessed May 4; 2010. Waterman, T. T., Vi. Hilbert, Jay Miller, and Zalmai Zahir 2001 Puget Sound Geography: Original Manuscript from T. T. Waterman. Lushootseed Press, Zahir Consulting Services, Federal Way, Washington. Whale, Robert 2010 Lea Hill Land Swap to Benefit Auburn and Green River Community College. Auburn Reporter News February 18. Yount, J. C., J. P. Minard, J.P. and G. R. Dembroff 1993 Geologic Map of Surficial Deposits in the Seattle 30' by 60' Quadrangle, Washington: Open-File Report 93-233. U.S. Geological Survey, Washington, D.C. Zehfuss, P.H.; B. F. Atwater, J. W. Vallance, H. Brenniman, and T. A. Brown 2003 Holocene Lahars and Their By-products; along the Historical Path of the White River between Mount Rainier,and Seattle. 10 Western Cordillera and Adjacent Areas: Geological Society of America Field Guide 4, edited by T. W. Swanson, pp. 209-223. Boulder, Colorado. Noithwest Archaeological Associates Inc. June,,1.6,.2010 CONTAINS CONFIDENTIAL-;INFORMATION # N OT FOR GENERAL:DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin Property 24 i 1 Northwest Archaeological Associates Inc. June 16, 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin- Property 25 ATTACHMENT, A: Tribal Correspondence Northwest Archaeological Associates Inc. June. 4& 2010 CONTAIN&CONFIDENTIAL INFORMATION NOT FOR.GENERAL DISTRIBUTION Cultural Resources Review for Lea Hill Park and the Martin.-Property 26 'Noithwest Aichaeologica/ Associates Inc. June :16; 2010 CONTAINS CONFIDENTIAL INFORMATION NOT FOR~GENERALDISTRIBUTION IA~I~I~ss ~~pll~I~I . Northwest Archaeological Associates, Inc. Cultural Resources Management Services } 5418 20th Avenue NW, Suite 200, Seattle, WA 98107 May 3, 2010 Ms. Laura Murphy Cultural Resources Muckleshoot Tribe 39015 172' Avenue SE Auburn, Washington 98092 RE: Cultural Resources Review for the Lea Hill Park / Martin Property Project (NWAA Project No. WA10-043) Dear Ms. Murphy, At the request of Weinman Consulting LLC and the Green River Community College, Northwest Archaeological Associates, Inc. (NWAA) will be conducting a cultural resources review for Lea Hill Park and the adjacent Martin Property (Figure 1). The park and Martin property are in the City of Auburn, King County, Washington, a portion of the SW'/4 of Section 9, Township 21 North, Range 5 East, Willamette Meridian. Green River Community College plans to rezone the area and build a new educational facility on the nine-acre park parcel, lands bounded by SE 320th Street on the south and 124th Avenue SE on the east. The community college will then construct a new park on the approximately five-acre Martin property, bounded by SE 316th Street on the north and 124th Avenue SE on the east. The project is subject to the Washington State Environmental Policy Act (SEPA). During the current cultural resources review, NWAA will check known historical, ethnographic, archaeological, and geotechnical data for the project area, to assist planners in developing cultural resource expectations for the project. NWAA will conduct a reconnaissance drive-by of the project area in early May, to verify field conditions and check for historical buildings or structures. No cultural resources fieldwork will be completed as part of this review project. We are contacting you to see if the Muckleshoot Tribe has any concerns for historic properties, cultural resources, or traditional use areas, including traditional cultural properties, in or adjacent to the project. If so, please contact me at your earliest convenience so we may include this information in our report. We respect any concerns the Tribe may have about sharing sensitive information with us and will be happy to work with you in a way that respects those concerns. Thank you for your attention to this matter and I look forward to hearing from you. My email is asharley@northwestarch.com and my cell phone number is (509) 998-5074. Sincerely, Ann Sharley, M.A., RPA Archaeologist / Architectural Historian Tel: (206) 781-1909 Fax: (206) 781-0154 Email: asharley@noahwestarch.com c. \J . rx, ' , ~ _ ff. ~'i ~ ,Y r ~ ~ s: , ~ ~~i~~~~ CULTURAL RESOURCES REPORT COVER SHEET Author(s): Ann Sharley and Brandy A. Rinck Title of Report: Cultural Resources Review for Lea Hill Park and the Martin Property, City of Auburn King County, Washington. (Cultural Resources Technical Memorandum, NWAA Report No. WA 10-043). Date of Report: June 16. 2010 County(ies): King Section: 9 Township: 21 N Range: 5 E Quad: Auburn, Wash., 7.5' USGS Acres: N/A (desktop studies only--no cultural resources survey was conducted) CD Submitted? ® Yes ❑ No PDF of Report? ® Historic Property Export Files? _o Archaeological Site(s)/Isolate(s) Found or Amended? ❑ Yes ❑ No ® N/A (no survey) TCP(s) Found? ❑ Yes ❑ No ® N/A (no survey) Replace a Draft? ❑ Yes ® No Satisfy a DAHP Archaeological Excavation Permit Reguirement? ❑ Yes # _ ® No DAHP Archaeological Site N/A , t v V C ~ - Y.' ~ _ , 't _ ' wwi~~~~i~i~~~i w~i~~~ ~ a d 9'nanLAyU' 0-2 !lr'~' s Trades Replacement Complex Green River Community College Auburn, WA aNA7~y ~ ~ s rw~ s so' Traffic Impact Study Update NM. F,K7 2128113 Revised May 13, 2011 Prepared for: S.M. Stemper Architects 400 Delridge Way SW, Suite 200 Seattle, WA 98106 Prepared by: RECEIVED JUN 01 2011 Transportation Engineering NorthWest, LLC CITY OF AUBURN PERMIT CENTER Transportation Engineering/Operations * Impact Studies * Transportation Planning * Demand Forecasting Seattle Office: PO Box 65254 * Seattle, WA 98155 * Office/Fax (206) 361-7333 * Toll Free (888) 220-7333 Eastside Office: 816 - 6th Street S * Kirkland, WA 98033 s . s z rt ~ j ~ - 1 t. ~ Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Table of Contents FINDINGS AND CONCLUSIONS ....................................................................................................1 INTRODUCTION 3 Project Description 3 EXISTING CONDITIONS 5 Existing Roadway Conditions 5 Existing Traffic Volumes 7 Intersection Level of Service 7 Roadway Level of Service .........................................................................................................11 Collision History ........................................................................................................................11 Public Transportation Services ..................................................................................................12 Nonmotorized Transportation Facilities .....................................................................................13 Planned Roadway Improvements .............................................................................................13 TRANSPORTATION IMPACT ANALYSIS ....................................................................................14 Non-Project Traffic Forecasts ................................................................................:...................14 Trip Generation .........................................................................................................................15 Trip Distribution and Assignment ..............................................................................................16 Diverted Trips Associated with Existing Trades Program ..........................................................16 Intersection Level of Service Impacts 21 Roadway Level of Service Impacts 26 Site Access, Safety, and Circulation Issues 26 Parking Impacts 27 Public Transportation Impacts 28 Nonmotorized Transportation Impacts 28 Transportation Impact Fees 29 PROPOSED PROJECT MITIGATION MEASURES ......................................................................31 Appendix A - Intersection Level of Service Calculations Appendix B - 2015 Traffic Volume Forecasts Appendix C - Roadway Level of Service Summary Sheets Revised May 13, 2011 Transportation Engineering Northwest, LLC Page Page i Y a ► Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update List of Figures Figure 1: Project Site Vicinity ..................................................................................................................4 Figure 2: Proposed Site Plan ..................................................................................................................6 Figure 3: Existing Channelization and Traffic Control .............................................................................8 Figure 4: Existing Peak Hour Traffic Volumes ........................................................................................9 Figure 5: Project Trip Distribution .........................................................................................................17 Figure 6: Peak Hour Project Generated Traffic Volume Trip Assignment .............................................18 Figure 7: Existing Trades Complex Redistributed Peak Hour Volumes ................................................20 Figure 8: 2015 A.M. Peak Hour Traffic Volume Impacts .......................................................................22 Figure 9: 2015 P.M. Peak Hour Traffic Volume Impacts .......................................................................23 Figure 10: SE 320th Street Increased Pedestrian Crossings .................................................................30 List of Tables Table 1: Level of Service Criteria at Intersections .................................................................................10 Table 2: Existing Intersection Levels of Service ...................................................................................10 Table 3: Existing Roadway Level of Service .........................................................................................11 Table 4: Historical Collision Rates (Most Recent 3-year Period) ..........................................................12 Table 5: Historical Trip Generation Rates at GRCC Indexed to Gross Building Areas .........................15 Table 6: Estimated Total Trip Generation of the Trades Replacement Complex ..................................16 Table 7: Existing Trades Replacement Complex Trips & Redistributed Trips .......................................19 Table 8: 2015 A.M. Peak Intersection Level of Service Impacts ...........................................................24 Table 9: 2015 P.M. Peak Intersection Level of Service Impacts ...........................................................25 Table 10: 2015 Roadway Level of Service A.M. Peak Hour Impacts ....................................................26 Table 11: 2015 Roadway Level of Service P.M. Peak Hour Impacts ....................................................26 Table 12: 2015 Proposed Action Peak Parking Demand ......................................................................27 Table 13: Proportional Share Estimates Towards Potential Transportation Improvements ..................32 Revised May 13, 2011 Transportation Engineering IlVorthWest, LLC Page ii t 1 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update FINDINGS AND CONCLUSIONS Project Proposal. Green River Community College (GRCC) would construct a Trades Replacement Complex Building of up to approximately 65,000 square feet north of SE 320' Street between 122" Avenue SE and 124" Avenue SE. Existing Trades buildings on campus . (comprising approximately 42,500 square-feet) would be removed following construction. A total net increase of approximately 22,500 square feet in building size would be provided over existing program space on the main campus. A total of 159 off-street parking stalls would be available for the Trades Replacement Complex. Full buildout and occupancy of the site is anticipated by the year 2015. Proposed Site Access. Site access to the relocated Trades Replacement Complex would be constructed via one site access roadway onto 124`" Avenue SE. Restricted secondary emergency vehicle access onto 122' Avenue SE would be provided. Trip Generation. The total trip generation of the Trades Replacement Complex is estimated as 162 a.m. peak hour and 83 p.m. peak hour trips using campus-wide trip generation rates. In reality there are two basic components to the total estimated trip generation: 1. Existing Trips are those currently traveling to the campus where the existing Trades program is located. Of existing trips, an estimated 62 a.m. peak hour trips and 32 p.m. peak hour trips would be redistributed from the existing campus to the new Trades Replacement Complex site, and 2. New Trips are those that would be generated by increased student capacity available at the Trades Replacement Complex and are new to the campus. These trips are estimated as 38 a.m. peak hour trips and 20 p.m. peak hour trips. 2015 Off-Site Study Intersection Level of Service (LOS) Impacts. The following signalized intersection and stop-controlled movements at unsignalized intersections would operate at LOS E/F during the a.m. and/or p.m. peak hour with and/or without the project: Intersections # 1 - 124' Avenue SE / SE 312" Street, #2 - 124' Avenue SE / SE 314`" Street and #3 - 124`" Avenue SE / SE 316`" Street. All other study intersections would operate at LOS D or better with and without the project during the a.m. and p.m. peak hour. Improvements are planned along 124`" Avenue SE and at its intersections with SE 312' Street, SE 314' Street, and SE 316`" Street by the City of Auburn by 2015, and are needed with or without the project to meet the recently adopted City LOS standards. In summary, only slight incremental increases in overall intersection delay would result at study intersections due to the proposed Trades Replacement Complex, and as such, no significant impacts would occur as a result of the project. At those intersections that currently do not meet adopted LOS standards, do not have funded transportation improvement, and are not on the City's Traffic Impact Fee list, a proportional share contribution is proposed to mitigate project impacts. The proposed pro-rata share would be calculated based on the percentage of new intersection or corridor traffic contributed by the Trades project. This share ranges between 1.2 and 1.7 percent at key intersections that do not currently meet adopted standards or roadway segments. Revised May 13, 2011 Transportation Engineering NorthVl/est, LLC Page ge 1 y Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update 2015 Roadway LOS Impacts. The roadway sections of 124`' Avenue SE between SE 312`h Street and SE 320`h Street (includes the westbound approach on SE 312`h Street) and SE 320`h Street from the GRCC West Entrance to 124`h Avenue SE would operate at LOS C or better without or with the project during the a.m. and p.m. peak hour in 2015. Parking Impacts. The Trades Replacement Complex would experience an estimated surplus of 18 off-street parking stalls during peak periods of use by students. This surplus would be available for Trades staff parking. GRCC proposes to implement a Parking Management Program for facilities at the Trades Replacement Complex. This Program would assign parking for staff and students associated with the Trades program within the main parking lot constructed at the site. The existing off-street public parking located adjacent to 122nd Avenue SE would remain as visitor parking only for general campus and public use as it is currently utilized. Transit and Nonmotorized Impacts. As part of 124th Avenue SE Arterial Improvements, GRCC recently reconstructed 124`h Avenue SE with the addition of a 10-foot sidewalk and 6- foot bicycle lane on the west side of the street between SE 316" Street and SE 320`'' Street, and a 6-foot bicycle lane between SE 318`h Street and SE 320`'' Street and 4-to 8-foot shoulders between SE 316`h Street and SE 318`' Street on the east side of the street. In addition, the College extended the existing sidewalk on the east side of 124' Avenue SE from the Student Housing complex north to SE 318`h Street. In addition, as part of the project, sidewalks would also be constructed along the site frontage of SE 320`h Street and a separate trail system would be provided throughout the entire complex. A new midblock crossing treatment is also proposed on SE 320`h Street In total, significant improvements to the pedestrian and bicycle circulation system would be enhanced as a result of the project. There are no anticipated impacts to public transportation services. A reserve area in the form of an easement dedication for a potential future transit service/layover space has been provided on the north side of SE 320`h Street at the request of King County-Metro. Transportation Impact Fees. The applicant is subject to a transportation impact fee by the City of Auburn. The actual traffic impact fee and credits would be calculated based on the fee schedule in effect at the time of building permit issuance. The City of Auburn is currently evaluating the eligibility of a potential impact fee credit. Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 2 Y s ~ . Trades Replacement Complex Green River Community College - Auburn WA Traffic Impact Study Update INTRODUCTION This study evaluates transportation impacts associated with the Trades Replacement Complex for the Green River Community College in Auburn, WA. This study documents transportation impacts associated with this proposed action, including: ➢ Assessment of existing transportation conditions and operations through data collection efforts and field reconnaissance. ➢ Estimation of a.m. peak hour and p.m. peak hour vehicular project trip generation. ➢ Assignment of a.m. peak hour and p.m. peak hour project trips onto the existing roadway network. ➢ Evaluation of level of service (LOS) impacts during the a.m. peak hour and p.m. peak hour at eight (8) off-site study intersections and 3 site access intersections to include the following: 1. 124' Avenue SE / SE 312' Street 2. 124' Avenue SE / SE 314" Street 3. 124" Avenue SE / SE 316' Street 4. 124' Avenue SE / SE 318d' Street (New GRCC Trades Replacement Complex Driveway) 5. 124" Avenue SE / SE 320' Street 6. 132 "d Avenue SE / SE 304' Street 7. 122"d Avenue SE / SE 320' Street 8. GRCC West Exit / SE 320`' Street 9. GRCC West Entrance / SE 329' Street 10. 105' Place SE / Lea Hill Road SE 11. 104" Avenue SE / Lea Hill Road SE (SE 320`' Street) ➢ Analysis of LOS impacts along the roadway corridor of 124' Avenue SE from SE 312" Street to SE 320" Street (includes the westbound approach on SE 312" Street) and SE 320' Street from 112' Avenue SE to 124' Avenue SE. ➢ Evaluation of site access, safety, and circulation issues. ➢ Assessment of parking, public transportation services and nonmotorized facility impacts. ➢ Identification of mitigation measures to maintain acceptable levels of mobility and safety based upon City of Auburn standards and guidelines. Project Description GRCC would construct a Trades Replacement Complex Building of up to approximately 65,000 square feet north of SE 320th Street between 122°a Avenue SE and 124th Avenue SE (location shown in Figure 1 with site vicinity and study intersections). Existing Trades buildings on campus (comprising approximately 42,500 square-feet) would be removed following construction. Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 3 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update a a I 18 L, SE 289th St -7 1 w w w W v1 Vf z H d w ti a > of 1 > y> > Q a Q j N} Q _ Q I L /f Y Ln L°'i M [ t i SE 304th St _ > I , 3 ~r CO 0B~:St I.- Trades I i Q Replacement Lea H II Rd SE E 3112th St. 'stn St wE Complex SE 3i th SE 316th St ~8 St SE 320 St sk~f ern s~ J r y. Y ain st i Main - GRCC Cz ! y~ campus Lake Holm Rd y 164 Ln th S S mi Study Intersection (Not to Scale) Transportation GRCC Trades Engineering Figure 1 Replacement Complex NorthWest, LLC Project Site Vicinity Auburn, WA Traffic Impact Study Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 4 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Site access would be constructed via one site access roadway onto 124`h Avenue SE. Restricted secondary emergency vehicle access onto 122"d Avenue SE would be provided and the 22-stall existing gravel parking lot (adjacent to 122"d Avenue SE) would be paved and upgraded, but would not be available for Trades Replacement Complex parking. This parking lot would remain available to the general public. A total of 160 off-street parking stalls would be on-site when the Trades Replacement Complex is complete; 98 stalls would be available for student/staff parking, 22 stalls would remain available to the general public in the lot adjacent to 122"d Avenue SE, and the remainder for Trades program activities. A site plan is illustrated in Figure 2. EXISTING CONDITIONS This section describes existing transportation system conditions in the study area. It includes an inventory of existing roadway conditions, traffic volumes, intersection and roadway levels of service, collision history, public transportation services, nonmotorized transportation facilities, and planned roadway improvements. Existing Roadway Conditions The following paragraphs describe existing arterial roadways that would be used as major routes for site access. Roadway characteristics are described in terms of number of lanes, posted speed limits and shoulder types and widths. 124" Avenue SE is a north-south roadway. The roadway consists of range of section between two and four travel lanes and varying shoulder conditions. Curbs, gutters and sidewalks are provided on the east side of the street in the vicinity of SE 320`h Street and on the west side between SE 312`h Street and SE 320`h Street. A two-way, center left-turn lane is provided north of SE 312`' Street and halfway to SE 304`h Street. Bicycle lanes are also provided in the vicinity of SE 312`' Street and SE 318`x' Street. The speed limit is posted at 30 mph. Recent improvements have been made to the arterial and are described later in this report. SE 320`h Street is a two-lane, east-west roadway. In the vicinity of the GRCC Campus, a 12- foot bus lane is provided on the south side of the street. The roadway generally consists of 11- to 12-foot travel lanes with 3-foot paved shoulders and 6-foot gravel shoulders on the north side of the street, and curbs, gutters, and sidewalks on the south side of the street adjacent to the GRCC Campus. A two-way, center left-turn lane exists for the GRCC West Entrance driveway and 120" Avenue SE. The posted speed limit is 35 mph. SE 318`h Street is a two-lane, east-west roadway that "dead-ends" within an existing residential subdivision east of the site. Curbs, gutters and sidewalks are provided on both sides of the street; the pavement width totals 46 feet between gutter lines. The speed limit is 25 mph. SE 316`h Street is a two-lane, east-west roadway. Curbs, gutters and sidewalks are provided on the north side of the street and 2-foot gravel shoulders are provided on the south side of the street. West of 124`h Avenue SE, the total pavement width is approximately 36 feet. The posted speed limit is 25 mph. SE 314`h Street is a local access roadway. Curbs, gutters and sidewalks are provided on both sides of the street with a total width of roughly 36 feet. The speed limit is posted at 25 mph. Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 5 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Primary Site Access 975;0- 77777-, `J em~e~(rarnysrin.~zrn •c, ^'I I s AMMYW - ' f J r+4tlt INNIU'1TAR ~~~~k ny if v r - - z ~xt t E -Y -7 Emerger- h~.~ ce ! AcceSS a t J~ I ~I n J` 'Y tl t` ( ' v ? I .f -_J r P Wao4~3MCX -v ,X'T` 1 I 1'/a°~' °2 Existing Parking Stalls to be Paved (Parking Not Available to Trades Replacement Complex) (Not to Scale) 19 Transportation Engineering GRCC Trades Figure 2 Replacement Complex NorthWest, «C Proposed Site Plan Auburn, WA Traffic Impact Study Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 6 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update SE 312`h Street is a two-lane, east-west roadway. Travel lanes are 11 feet with 4- to 6-foot paved shoulders. The posted speed limit is 35 mph. Lea Hill Road SE is a two-lane, east-west roadway with 11-foot travel lanes and 4- to 6-foot paved shoulders. The speed limit is posted at 35 mph. 105`h Place SE is a two-lane, north-south roadway with 11-foot travel lanes and 4-foot paved shoulders. The posted speed limit is 35 mph. Existing Traffic Volumes Figure 3 summarizes existing channelization and traffic control at the all study intersections. Figure 4 highlights existing year 2009 a.m. and p.m. peak period turning movements. All Traffic Data Gathering, Inc. and Transportation Engineering Northwest, LLC conducted a.m. and p.m. peak hour turning movement counts during the a.m. and p.m. peak hour during the peak Fall Quarter (October 2009) when the GRCC campus was at peak utilization. Intersection Level of Service Level of service (LOS) serves as an indicator of the quality of traffic flow at an intersection or road segment. The LOS grading ranges from A to F, such that LOS A is assigned when minimal delays are present and low volumes are experienced. LOS F indicates long delays and/or forced flow. Table 1 summarizes the delay range for each level of service at signalized and unsignalized intersections. The methods used to calculate the levels of service are described in the updated 2000 Highway Capacity Manual (Special Report 209, Transportation Research Board). The measure of effectiveness for signalized intersections is average control delay, defined as the total time vehicles are stopped at an intersection approach during a specified time period divided by the number of vehicles departing from the approach in the same time period. Level of service for signalized intersections is defined in terms of control delay, which is a measure of driver discomfort, frustration, and increased travel time. The delay experienced by a motorist is made of up a number of factors that relate to traffic control, geometries, traffic demand, and incidents. Total control delay is the difference between the travel time actually experienced and the reference travel time that would result during base conditions (i.e., the absence of traffic control, geometric delay, any incidents, or as a result other vehicles). LOS F at signalized intersections is often considered unacceptable to most drivers, but does not automatically imply that the intersection is over capacity. Jammed conditions could occur on one or all approaches, with periods of long delays and drivers waiting for multiple signal cycles to progress through the intersection. For unsignalized intersections, a level of service and estimate of average control delay is determined for each minor or controlled movement based upon a sequential analysis of gaps in the major traffic streams and conflicting traffic movements. In addition, given that unsignalized intersections create different driver expectations and congestion levels than signalized intersections, their delay criteria are lower. Control delay at unsignalized intersections include deceleration delay, queue move-up time, stopped delay in waiting for an adequate gap in flows through the intersection, and final acceleration delay. Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 7 ~ x a t i x Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update 124th Ave SENSE 312th St 124th Ave SENSE 314th St 124th Ave SENSE 316th St 124th Ave SENSE 318th St W W m ti Iy ~ ~ 1 SE 3121h S7 SE 318th St Lea Hill Rd SE SE 314th St SE 316th St E 124th Ave SENSE 320th St 132nd Ave SE/SE 304th St 122nd Ave SENSE 320th St GRCC West Exit/SE 320th St h Il m ~ Al GRCC Dr T SE 320th St SE 3201h St SE 304th St SE 3201h St i _ i D_ U GRCC West Entrance/SE 320th St • Lea Hill Rd SE / 105th PI SE _ 1 h h A = SE 320th SI J•,~_ 105th PI SE U" i L~_..1.._.._....`__._ Lea Hill Rd SE / 104th Ave SE W ~ ~ . - SE 298NSC y f ea i1 Rd SE SE 304th Sc OBL% St r Trades 1 `Replacement Lm Hill Rd SE- 15ih Su ME - Complex ) -p t sx o-s - - th . 1(s S„ E'.72W S, E>rialn sr L! j i ain UKU m~ U campus b,un.akck-~>•unonA.Ry- lake Holn, Rd -f W ] ~:I "1-•-.~„ Legend 164 Traffic Stgnal r.7 4$E j' i Stop Sign (Not to scale) FI ure 3 GRCC Trades `,n Transportation g Replacement. Complex Engineering Existing Channelization NorthWest, I_i_C and Traffic Control Auburn, WA Traffic Impact Study Revised May 13, 2011 Transportation Engineering North~/est, LLC Page 8 , a Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update 124th Ave SE/SE 312th S[ 124th Ave SENSE 314th SE 124th Ave SE/SE 316Eh St 124th Ave SENSE 318th St h 46 (57) y (85) (177) (64)Q F 187 (777) (3) (510) ¢ (70) (357) {61)Q 62 (32) (314) (53) ¢ 47 (31) 92 314 43 2 908 34 843 23 E- 0 (3) 833 16 .p K- 471 .(241) 2 (3) 32 (21) SE312th sf SE 318th St Lea Hill Rd SE SE 314th St R SE 316th St GRGC Trades Or (121) 97 1 t ( (1) 5--'( 1 t (56) S9--4 I t 1 t ~y I (200) 129- 73 150 133 1 356 (1)2-> 4 236 1 200 10 (95) 120 (54) (161) (246) (1)3-,A (2) (418) (7)4 ~ (8) (332) (1) (380) (36) -11 124th Ave SENSE 320th St 132ndAve SENSE 304th St 122nd Ave SE/SE 320th St GRCC West Exit/SE 320th SE Ilk- 1 (I) X48 (188)W 295 (411) m (232) (111) _ (135) (360) Q ('1) (O) (1) 386 493 R 12(61) 112 371 ° F 504 (368) l 0 1 397 (292) F 398 (293) 1 N 40- 1U` ^ GRCC Main Entrance { SE 3041h St ) 0 (0) SE 320th St SE 320th St Lea Hilt Rd SE g SE 320th St (228) 162 (114) 62 (2) 2 $ 1 t ( W (36) 139-o- (348) 203 -s (262) 299 0 0 1 (129) 246 1 29 55 (0) 0 Q (0) (0) (1) (68) (35) • GRCC West Entrance/SE 320th St We Lea Hill Rd SE / 105th PI SE N F 96 (189) (439 ) ( 5 ) _ -7(2) ~ 331 (t33) 201 (273) SE 320th St 105th A SE (95) 246- 3t3 261 (78) 281 it ~ (651) (315) H 3 - Lea Hill Rd SE / 104th Ave SE 7 sE 28e ` s - (379) (O) (~20 4526) , t F 4 (608) d rl a: it 2 (0) : Lea Hill Rd SE r j - - ' (272) 177 I04d, St \ .M.. U i- SEi 71 (88) 625 1 1 fi ¢ f oe (4) 2 (0) (1) (0) it Trades Replacement U3 1,i.. ad sE~ E 3Mh 54' ismsr,taE Complex 1~ -00 S, sE13201sE L.... ; G Y r4 W; ain RCC ~I ; eX1am s~f_f k.. m; campus lake Hofm Rd Legend '164 - r xx -1• A.M. Peak. Hour Volumes tai ..tss .i..... (xx) --o-P.M. Peak Hour Volumes (Not to Scale) Figure 4 GRCC Trades Transportation Replacement Complex Engineering Existing Peak Hour NorthWest, LLC Traffic Volumes Auburn, WA Traffic Impact Study Revised May 13, 2011 Transportation Engineering NorthWest, LLC Page 9 Trades Replacement Complex Green River Community College - Auburn WA Traffic Impact Study Update Intersection levels of service were calculated using the methodology and procedures outlined in the 2000 Highway Capacity Manual, Special Report 209, Transportation Research Board (TRB), using the Synchro6 and HCS 2000 software programs. Table 1: Level of Service Criteria at Intersections Signalized Intersection Unsignalized Intersection Level of Service Delay Range (sec) Delay Range (sec) A 10 5 10 B > 10 to<-20 > 10to<_15 C > 20 to 35 > 15to:525 D > 35 to 55 > 25 to-<35 E > 55toS80 > 35 to <_50 F 80 50 Source: "Highway Capacity Manual", Special Report 209, Transportation Research Board, 2000, Update. Existing a.m. and p.m. peak hour levels of service at study intersections are summarized in Table 2. Intersection #1 - 124' Avenue SE / SE 312th Street currently operates at LOS E during the a.m. peak hour and LOS D during the p.m. peak hour. Eastbound movements at Intersection #2 - 124th Avenue SE / SE 314t' Street currently operate at LOS E during the a.m. peak hour and LOS C during the p.m. peak hour. Eastbound movements at Intersection #3 - 124t' Avenue SE / SE 316t' Street currently operate at LOS F during the a.m. peak hour and LOS E during the p.m. peak hour. The City of Auburn has adopted LOS D as its standard. Table 2: Existing Intersection Levels of Service A.M. Peak Hour P.M. Peak Hour Control Level of Average Level of Average Signalized Intersections Type Service Dela Service Delay #1 - 124`h Ave SE / SE 312' St Signalized E 60 D 36 #5 - 124`h Ave SE/ SE 320th St / Signalized C 34 B 17 GRCC Main Entrance #6 - 132"d Ave SE / SE 304`h St Si nalized B 15 B 12 #10 - 105th PI SE / Lea Hill Rd SE Signalized A 9 B 16 #11 - 104`h Ave SE / Lea Hill Rd SE Signalized B 12 B 18 Control Level of Average Level of Average Unsi nalized Intersections Type Service Delay Service Delay #2 - 124" Ave SE / SE 31411 St EB E 45 C 17 NB Left B 13 A 9 #3-1241hAve SE/SE316`h St EB F >100 E 44 WB B 12 B 13 NB Left B 13 A 9 SB Left A 8 A 8 #4-124' AveSE/SE3181h St WB C 19 C 16 SB Left A 8 A 9 #7 - 122nd Ave SE / SE 320`h St EB Left A 8 A 8 WB Left A 8 A 8 NB B 10 A 10 SB B 14 B 12 #8 - GRCC West Exit / SE 3201" St NB B 12 B 11 #9 - GRCC West Entrance / SE 3201' St WB Left B 11 A 8 Note: Analysis based on Synchro 6 and HCS 2000 using HCM 2000 control delays (seconds) and LOS. Transportation Engineering ineerin NorthWest, LLC Revised May 13, 2011 ransportation g g Pa e 10 9 1 \ Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update All other signalized intersections and stop-controlled turning movements at unsignalized intersections operate at LOS C or better under existing conditions during the a.m. and p.m. peak hour. Detailed level of service summary worksheets are provided in Appendix A. Roadway Level of Service The City of Auburn uses a corridor level-of-service for its primary measurement of transportation system impacts. The City defines unsatisfactory LOS as: an unacceptable increase in hazard or decrease in safety on a roadway; an accelerated deterioration of the street pavement condition or the proposed use of a street not designated as a truck route for truck movements; an unacceptable impact on geometric design conditions at an intersection where two truck routes meet on the City arterial and collector network; an increase in congestion which constitutes an unacceptable adverse environmental impact under the State Environmental Policy Act; or the inability of a facility to meet the adopted LOS standard. As identified in the City's Comprehensive Transportation Plan, Table 2-2, 124' Avenue SE from SE 282nd Street to SE 320th Street (includes the westbound approach on SE 312th Street) and SE 320`h Street from Lea Hill Road to 124th Avenue SE have an adopted LOS standard of LOS D. A corridor LOS analysis was conducted on 124t' Avenue SE between SE 312th Street and SE 320th Street and on SE 320th Street from the GRCC West Entrance to 124th Avenue SE using the S ny chro6 software program. As shown in Table 3, both roadway sections currently operate at LOS C or better during the a.m. and p.m. peak hours. Table 3: Existin Roadway Level of Service A.M. Peak Hour P.M. Peak Hour Travel Travel Travel Travel Time Speed Time Speed Roadway Section Direction (sec) (mph) LOS (sec) (mph) LOS WB Approach on NB 65 26.9 B 67 25.8 B 124" Ave SE' SE 312`' St to WB/SB' 190 19.6 C 157 23.5 C SE 32011 St SE 320th St GRCC West Ent. to EB 55 18.1 C 49 21.7 C 124" Ave SE WB 33 29.9 B 34 28.9 B Note: Analysis based on Synchro 6, Traffic Signal Coordination Software using HCM 2000 control delays (seconds) and LOS. 1 - Assumes a distance of 0.48 miles northbound and 1.03/1.04 miles westbound/southbound on 124th Avenue SE. 2 - Assumes a distance of 0.27 miles on SE 3201h Street. Collision History The frequency and severity of collisions are commonly weighted against the speed, volume, and functional classification of a roadway segment or intersection. These variables are considered in determining if a certain location has an unusually high collision rate or unsafe condition. The average annual collision rate is calculated by summing the total number of collisions that occurred at a specified intersection or roadway segment during the past three years, and dividing the total by three. At intersections, collision rates are also measured per million entering vehicles (mev), which reflects the number of vehicles traveling through an intersection, providing a different indication of design-related versus volume-related incidences. Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 11 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update In general, intersections with less than 5 collisions per year or a collision rate less than 2.0 mev are not considered high collision locations. Historical collision data was provided by the City of Auburn for the most recent 3-year period between January 1, 2006 and December 31, 2009. There were no reported collisions at Intersection #2 - 124" Avenue SE / SE 314" Street, #7 - 122nd Avenue SE / SE 320" Street, #8 - GRCC West Exit / SE 320' Street, and #9 - GRCC West Entrance / SE 320" Street. As shown in Table 4, all intersections experienced an average annual collision rate less than 5.00 per year and a collision rate less than 1.00 per mev. Based upon a review of historical collision records, there are no significant safety issues at off-site and site access study intersections. Table 4: Historical Collision Rates (Most Recent 3-year Period) Average Collision Total Annual Rate per Intersections Fatalities Injuries PDO Collisions' Collision Rate MEV2 #1 - 124' Ave SE / SE 312`h St 0 2 3 5 1.00 0.13 #3 - 124t1 Ave SE / SE 31611 St 0 1 0 1 0.00 0.00 #4 - 1241h Ave SE / SE 318`1 St 0 0 1 1 0.33 0.08 #5 - 124' Ave SE / SE 3201h St / 0 3 2 5 0.67 0.17 GRCC Main Entrance #6 - 132°d Ave SE / SE 304' St 0 3 14 17 4.67 0.74 #10 - 105`1 PI SE / Lea Hill Rd SE 0 1 7 8 2.33 0.39 #11 - 104t1 Ave SE / Lea Hill Rd SE 0 2 5 7 1.67 0.21 1 - City of Auburn Corridor Report, shy 3-year period between January 1, 2006 and December 31, 2009, Data Collected June 2010. 2 - MEV - Million entering vehicles. Public Transportation Services King County-Metro transit routes 164 and 181 provide public transportation services at the GRCC Campus and on neighboring streets in the project site vicinity. Transit stops are located on 124' Avenue NE at its intersection with SE 316' Street and adjacent to the main GRCC Campus on the south side of SE 320' Street. King Country-Metro offers dial-a-ride, rideshare, and ridematch services. Accessible transit services are also offered to citizens with disabilities. Bicycle racks are provided on the front of most King County-Metro buses. A set number of King-County Metro bus passes are available to students at a reduced rate the first day of each quarter. The Green River Transportation Department also provides financial incentives for carpooling and offers reserved parking for carpool vehicles on-campus. Route 164 provides weekday service from Kent to the GRCC Campus. Service arrives at the Campus from 5:40 a.m. until 9:40 p.m. and departs from the Campus between 6:15 a.m. to 10:15 p.m. every hour. King County-Metro plans to increase the frequency of this service by 2011 to every 30 minutes along the 124' Avenue SE corridor. v9 Transportation Engineering Northwest, LLC Revised May 13, 2011 Page 12 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Route 181 offers daily service generally every half hour to one hour to the GRCC Campus, Auburn (including the Sound Transit Commuter Rail Station), and Federal Way. Weekday service arrives at the campus from 6:15 a.m. to 11:45 p.m. and departs from the campus between 5:40 a.m. to 10:10 p.m. Saturday service departs the campus from 7:15 a.m. until 10:15 p.m. and arriving on-campus between 8:00 a.m. and midnight. Sunday service departs the campus between 8:10 a.m. until 8:10 p.m. and arriving on-campus from 9:00 a.m. until 9:00 p.m. Nonmotorized Transportation Facilities Raised sidewalks are located on all property frontages of the existing GRCC Campus, i.e., on the east side of 124" Avenue SE (fronting student housing) and on the south side of SE 320th Street. Paved shoulders approximately 4 to 6 feet wide and portions of raised sidewalk are provided on 124`h Avenue SE. Bicycle lanes are also provided on 124' Avenue SE in the vicinity of SE 312" Street. On the north side of SE 320th Street, 3-foot paved shoulders and 6- foot gravel shoulders are provided. Painted crosswalks with.signage are also provided on SE 320th Street on the east side of its intersections with 122"d Avenue SE and at 124`h Avenue SE. Planned Roadway Improvements A review of planned transportation improvements in the City of Auburn's 2010-2015 Transportation Improvement Program (TIP) was conducted. The City of Auburn's 6-year TIP identified the following transportation improvement projects that are in the vicinity to the proposed development: ➢ TIP #39 - 124`' Avenue SE Corridor Improvements Phase 1. Provide improvements at the signalized intersection of SE 320' Street and 124`h Avenue SE. Construct bicycle lanes, sidewalks, dual southbound left-turn lanes into Green River Community College, and provide ITS (Intelligent Transportation Systems). The project is anticipated for construction by the year 2015 with a project cost estimate of $850,000. ➢ TIP #40 - 124" Avenue SE Corridor Improvements Phase 2. Construct a 4-lane section with bicycle and pedestrian facilities between SE 318" Street and SE 312`h Street. The project is anticipated for construction by the year 2015 with a project cost estimate of $1,520,000. ➢ TIP #41 - 124" Avenue SE Corridor Improvements Phase 3. Provide improvements at the signalized intersection of SE 312' Street and 124' Avenue SE. Provide ITS and construct bicycle lanes, pedestrian safety improvements, dual westbound left-turn lanes and two southbound through lanes. The project is anticipated for construction by the year 2015 with a project cost estimate of $500,000. ➢ TIP #42 - SE 320`h Street Corridor Improvements. Construct a 3-lane roadway with bicycle and pedestrian facilities on SE 320" Street between 124`h Avenue SE and the western entrance to Green River Community College. The project is anticipated for construction by the year 2015 with a project cost estimate of $640,000. The funding for these projects is unknown at this time, and they were not assumed to be completed by 2015 for traffic analysis purposes. The effects of these improvements are noted in the report however, as these are improvements identified by the City of Auburn to meet their Revised May Transportation Engineering Northwest, LLC 1 Page lo13 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Comprehensive Plan level of standards recently adopted within the study area to achieve transportation concurrency within the next 6 years as required by GMA. These improvements were planned and identified to address existing needs based upon level of service standards established by the City of Auburn. Additional Planned Roadway Improvements As part of overall GRCC Campus improvements, GRCC recently constructed a combination of site access improvements, frontage improvements and a portion of the City's arterial system improvement along 124`x' Avenue SE. Construction of these improvements by GRCC were completed in 2010 - therefore, these improvements were assumed to be constructed under 2015 baseline conditions without the proposed project: ➢ Construction of a two-way, center left-turn lane from between SE 318" Street and SE 316`h Street. ➢ Construction of two southbound lanes from approximately 430 feet south of SE 316`h Street to SE 320`t' Street. ➢ Construction a 10-foot sidewalk and 6-foot bicycle lane on the west side of the street between SE 316th Street and SE 3201h Street. ➢ Construction of a 6-foot bicycle lane between SE 318th Street and SE 320th Street, 4-to 8- foot shoulders between SE 316`h Street and SE 318`h Street on the east side of the street, and extension of the existing sidewalk from the northern edge of Student Housing to SE 318`' Street. TRANSPORTATION IMPACT ANALYSIS The following section describes transportation impacts of the Trades Replacement Complex on the surrounding arterial network and study intersections in the site vicinity. The discussion includes non-project related traffic forecasts, new trips generated by the proposed development, distribution and assignment of new project trips, impacts on roadways, levels of service at nearby significant intersections, site access, circulation, and safety issues, parking, public transportation services, nonmotorized facilities, and transportation impact fees. Non-Project Traffic Forecasts This analysis is for the Trades Replacement Complex only, and the horizon year for the traffic study is 2015. This reflects funding commitments of the State and the expected timing of construction. Given this buildout year, existing traffic volumes representing through traffic in the campus vicinity were factored by 1 percent per year to account for general traffic growth in the vicinity based on historical traffic counts. Historical trip generation of GRCC campus traffic indicates a near zero to negative 1 percent per year growth rate since 2003. The main campus has been "at capacity" for peak parking utilization during morning hours for a number of years, and as such, existing traffic volumes related to campus access were not factored to establish 2015 baseline conditions. Revised May 13, 2011 Transportation Engineering NorthWest, LLC Page 14 IQ9 f Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Trip Generation As noted in the Science Center Building Green River Community College, Transportation Impact Study, October 29, 2004, and past traffic studies completed by TENW for GRCC, gross building area at the campus was chosen as the most accurate method of estimating trip generation. Additional campus-wide trip generation surveys were taken again in October 2010 as part of master planning efforts for the GRCC main campus and in April of 2011 to respond to Auburn Public Work comments received in March 2011 on the January 2, 2001 Trades Replacement Complex Transportation Impact Study Update, TENW. Detailed results of the April 2011 Trip Generation Study at the GRCC Campus are provided under separate cover as Green River Community College - Campus Trip Generation Study April 2011, May 12, 2011, TENW. Table 5 highlights the a.m. and p.m. peak hour survey results collected on behalf of GRCC by TENW in 2003, 2010, and in 2011. As shown, the observed trip generation rates have been indexed to gross building areas available to the campus at the time of each survey. Although overall trip generation of the campus increased between 2003 and 2010, the campus-wide trip generation rate has decreased slightly over this period as building floor area has increased. The trip generation study conducted in April in 2011 indicates a slightly lower trip generation rate than those just taken during fall quarter of 2010, although gross building floor area has remained constant. This reflects the relative nature of student loads that fluctuate throughout the course of each year, typically peaking during each Fall quarter. Based on these findings, vehicle trip generation rates originally used in the Trades Replacement Complex Traffic Impact Study, January 3, 2011, TENW, from surveys conducted in October 2010 are appropriate campus trip generation rates to apply to the proposed Trades Replacement Complex, as they represent recent peak trip generation of the GRCC campus indexed to gross building floor area. As in October of 2010, observed campus trip generation rates taken in April 2011 included student and other vehicle trips that were generated by the existing gravel public parking lot within the adjacent City park site at the northeast corner of the 122"d Avenue SE and SE 320" Street intersection. Table 5: Historical Trip Generation Rates at GRCC Indexed to Gross Buildin Areas Trips per One-Way Gross Campus 1,000 sf Time Period Survey Period Vehicle Trips Square Foota e' (GFLA) AM Peak Hour - Fall Quarter October 2003 1,514 583,882 2.59 PM Peak Hour - Fall Quarter October 2003 775 583,882 1.33 AM Peak Hour - Fall Quarter October 2010 1,589 637,627 2.49 PM Peak Hour - Fall Quarter October 2010 816 637,627 1.28 AM Peak Hour - Spring Quarter Aril 2011 11347 637,627 2.11 PM Peak Hour - Spring Quarter Aril 2011 796 637,627 1.25 Source: Observed vehicle trip generation rates of GRCC, October 2003 and October 2010, as documented in the GRCC 2010 Campus Parking and Utilization Study, TENW, December 22, 2010, and additional Campus Trip Generation Study - April 2011. 1 - Gross Campus Square Footage is shown as gross floor area of buildings in use during survey period. Although the program and student ratios within the Trades program are significantly lower than the overall campus, the trip rates of the existing overall campus were used to estimate existing traffic generated by the existing Trades buildings on the GRCC campus as required by the City of Auburn as a conservative approach. By comparison, the average student ratio per 1,000 square-feet (so of gross floor area is approximately 19.3 students/1,000 sf.at the existing SMT Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 15 Trades Replacement Complex 1 Green River Community College - Auburn, WA Traffic Impact Study Update building, while the existing Trades complex averages only 2.8 students/1,000 sf; 15 percent of a typical classroom building. As such, these figures are ;considered very conservative. As these campus-wide trip generation rates are reflective of actual site trip generation, trip rates associated with the Fall 2010 surveys were utilized to estimate increased trip generation potential of new classroom space available within the Trades Replacement Complex. The total trip generation of the Trades Replacement Complex is estimated as 162 a.m. peak hour and 83 p.m. peak hour trips (as shown in Table 6) using 2010 campus-wide trip generation rates. Table 6: Estimated Total Trip Generation of the Trades Re lacement Complex AM Peak Hour PM Peak Hour Building Size Tri Generation Trip Generation Proposed Use Square Feet Enter Exit Trips Enter Exit Trips Trades Replacement Complex 65,000 137 25 162 37 46 83 Source: Observed vehicle trip generation rates of GRCC. October 2010 and TENW. Diversion of existing traffic from the main GRCC campus to the proposed Trades Replacement Complex, and adjustments to reflect existing Trades trips, are documented in the Diverted Trips Associated with Existing Trades Program section of this report. Diverted trips of existing traffic will occur as a portion of existing students would shift to new parking facilities at the Trades Replacement Complex that would be dedicated to the Trades program. Some existing traffic generated by the existing Trades program would continue to park on the main GRCC campus given other class loads and general school activities within the main campus. Trip Distribution and Assignment Using standard engineering practices and guidelines, new vehicle trips generated by the proposed GRCC expansion were distributed and assigned to the surrounding street system based on existing traffic volumes along SE 320"' Street, 124`h Avenue SE, local traffic patterns, and location of area services. Project trip distribution and project trip assignment was assumed to follow these basic patterns from the project site based upon existing observations (Source: GRCC Campus Utilization Study, February 19, 2004): 40 percent to the west via SE 320"' Street and 60 percent to the north via 124`h Avenue SE. Beyond the project site, 45 percent would travel north via 112' Avenue SE; 124" Avenue SE, and SR 18; and 15 percent would travel south and west via SR 18. Project trip distribution is illustrated in Figure 5. Peak hour project trip assignment at the Trades Replacement Complex Site Driveway intersection onto 124th Avenue SE is shown in Figure 6. No project trips were assigned to the restricted secondary emergency access only driveway onto 122"d Avenue SE. Diverted Trips Associated with Existing Trades Program With the development of the Trades Replacement Complex, a total of 159 parking stalls would be provided with primary vehicular access via 124 ti, Avenue SE, opposite SE 318`h Street. Of this total supply, approximately 92 stalls would be available for staff/Trade students while the remaining are for the Trades Program itself (i.e., Automotive and Auto Body bull pen for Revised May 13, 2011 Transportation Engineering NorthWest, LLC Page 16 a Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update 18 I Q I _ SE 284th St I ~ I Sal Ui LU W H I N z ~ k a elf SE 304th St 3 I CO v E 30Bfh St I Trades _ 1L Replacement Lea H II Rd SE E 15th 5t(h1E Complex SE314t °y 't SE 316th St s St i. s~ 3-Fefti St ~a r ain St Main >L--J G RCC I 1 i Cam us AtL,ur...glaEk Lake Holm Rd UJ 164 th St S (Not to Scale) GRCC Trades Transportation Replacement Complex Engineering Figure 5 Northwest, LLC Project Trip Distribution Auburn, WA TraNlc Impact Study Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 17 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update 124th Ave SE/SE 312th St 124th Ave SENSE 314th St 124th Ave SENSE 316th St 124th Ave SENSE 318th St d (6) ) (6) N 13 (4) 19 ` 19 16 SE 312th St SE 318th St Lea Hill Rd SE t SE 314th St t SE 318th SI t GRCC Trades Dr 4 (7)4--1( (2) (4) (7) (7) (4) 2 124th Ave SENSE 320th St 132ndAve SENSE 304th St 122nd Ave SE/SE 320th St GRCC West Exit/SE 320th St h h y (1) ¢ a F 13 (4) E- 2 (4) t-- 2 (4) GRCC Main Entrance SE 300t St SE 320th St SE it Lea Hill Rd SE 6 SE 320th St w (4) 13 (4) 2 -3P. (4) 13 --)N- h (4) 13 3 U U C [t U' C7 • GRCC West Entrance/SE 320th St • Lea Hill Rd SE / 105th PI SE F 2 (4) _ 2 (4) SE 320th sr 105th PI SE (4) 13--o- U 2 II (4) L...._...__ _ Lea Hill Rd SE / 104th Ave SE N to -1 SE 28&h:S~ f Q F 2 (4) Z( d > y: <I Lea Hill Rd SE Li ~ i < 5 n ' 1 sEbo4ms~ (4) 13~ -"."E ....i.. i-. E $~SEx3(Ifl, Oi ~ I Trades f.. Replacement Lea Hui Rd SE E 312th S[ I ts,hS,ttE Complex J ii stldth s: r L~ .r--SE1320 'St : - - 4a g am' - i. Main i x ET1am su- I t_- GRCC Cam us +4u uin~ txkllhrn 4Rd.. tatm H.u Rd Legend "a xx -1-A.M. Peak Hour Volumes t.._.' P.M. Peak Hour Volumes -hsrs?v' I ( ) (Not to Scale) GRCC Trades Transportation Figure 6 Replacement Complex Engineering Peak Hour Project Generated NorthWest, LLC Traffic Volume Trip Assignment Auburn, WA Trafflc Impact Study Revised May 13, 2011 Transportation Engineering niorthWest, LLC Page ge 18 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update customer and program cars, and the Trades fleet). Therefore, existing student/staff trips associated with the Trades relocation would be redistributed from the main Campus to the 124Ih Avenue SE / SE 318`h Street intersection. Table 7 summarizes trip generation and trip redistribution for the existing 42,574 square foot Trades Replacement Complex. As discussed previously in the trip generation section, total trip generation for the Trades Replacement Complex was based upon the total square footage of 65,000 square feet for existing and new uses. Of the total trip generation estimates, it was determined that 77 percent would be existing trips and 23 percent would be new trips based on existing and proposed student capacity within the Trades program as noted in the footnotes of Table T. Table 7: Existing Trades Replace ent Complex rips & Redistributed Trips AM Peak Hour PM Peak Hour Trip Generation Trip Generation Index Population Type Percent' Enter Exit Trips Enter Exit Trips Existing Trades Bldg 77% 105 19 124 57 35 63 Redistributed Existing Trades Bldg 50% 53 9 62 24 18 32 Source: Observed vehicle trip generation rates of GRCC, October 2003. 1 - Existing student capacity of the Trades Program at any one time is 120 students. With the Trades Replacement Complex, this student capacity increases to 156 students at any one time. As such, existing trips are estimated at 77 percent of total trip generation. Fifty-percent of all existing trips would be redistributed based on GRCC student data. Based on College student class data, it was determined that roughly 50 percent of all existing trips would be redistributed for student/staff parking at the Trades Replacement Complex as not all of this existing demand within the Trades Program attend GRCC for Trades-only (i.e., students and staff have other classes/ responsibilities within the main campus). Thus, a total of 62 a.m. peak hour trips and 32 p.m. peak hour trips were redistributed for relocation of the Trades Replacement Complex. Figure 7 shows redistributed trips at specific intersections associated with the proposed Trades program relocation. An existing gravel parking lot on the site that is accessed via 122" Avenue SE would be paved as part of the project. This parking would remain as open public parking which is generally used as visitor parking by the GRCC during school hours. As assigned parking for the Trades program will be managed within the new complex, no changes in function, demand, or utilization of this existing parking facility would occur, and as such, no redistribution of existing traffic levels to/from this facility were made in the traffic analysis. Revised May 2011 Transportation Engineering NorthWest, LLC 13, Page 19 1 ; Trades Replacement Complex 1 Green River Community College - Auburn, WA Traffic Impact Study Update 'a j ~ moo.-•..~. 18 SE 281th ISE W V1 W y N > a Q ' Q z ui Go N C are i M LI ~ d.i I SE 304th St Q ; 308&-St Trades Q Replacement Lea H II Rd SE SE 312th St 15th St E Complex SE 31 th 5t SE 316th St 124th Ave SE/SE 3.18th St 1 E3+8th Sc f I. h St,N SE 320t St r (14) (•14) i x 32 -32 14 j 1 W i , t_ 1~ SE 3181h St ^-'~@ III _ GRCC Tadss ain St L- Main (11) s~ 19 ~5 GRCC (6} 4~ (5) (-10) Cam us Au6ar~1 124th AveuSUSE 320th St aEk 4i ~ (6) (-14) a S (10) 4 -28 = F' -3 (-6) 164 tN Q J SE 320th St rth St S I I( (5) 19~ (-5) -19 Legend xx --o- A.M. Peak Hour Volumes (xx) - P.M. Peak Hour Volumes (Not to Scale) Transportation Figure 7 GRCC Trades Replacement Complex Engineering Existing Trades Complex Auburn, WA NorthWest, LLC Redistributed Peak Hour Volumes Traffic Impact Study Revised May 13, 2011 Transportation Engineering NorthWest, LLC Page 20 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Intersection Level of Service Impacts Figures 8 and 9 summarize a.m. and p.m. peak hour traffic volumes with and without the proposed Trades Replacement Complex development. Intersection levels of service impacts during the a.m. and p.m. peak hour were evaluated at study intersections assuming full completion and occupancy of the Trades Replacement Complex in 2015 and are summarized in Tables 8 and 9. The analysis assumes that all signalized intersections have optimized signal cycle lengths/splits/offsets. Detailed level of service summary worksheets are provided in Appendix A, and traffic volume calculations worksheets are provided in Appendix B. The signalized Intersection #1 - 124`h Avenue SE / SE 312`h Street would operate at LOS E with or without the project during the a.m. peak hour in 2015. Eastbound movements at the unsignalized intersection of Intersection #2 - 124" Avenue SE / SE 314" Street would operate at LOS F during the a.m. peak hour with or without the project in 2015, and at the unsignalized intersection of Intersection #3 - 124' Avenue SE / SE 316`' Street would operate at LOS F during the a.m. and p.m. peak hour with or without the project in 2015. All other study intersections would operate at LOS D or better with and without the project in 2015 during the a.m. and p.m. peak hour, and would meet adopted level of service standards. As shown in Tables 8 and 9, only slight incremental increases in overall intersection delay would result at study intersections due to the proposed Trades Replacement Complex. As such, no significant impacts would occur as a result of the project. As noted previously, transportation improvements are planned and programmed (although currently unfunded) along 124`h Avenue SE and at its intersections with SE 312' Street, SE 314th Street, and SE 316th Street by the City of Auburn prior to 2015; these are needed with or without the project to meet the City's adopted City LOS standards. With these planned improvements the intersections that do not meet currently adopted level of service standards would improve to LOS D or better, and result in a concurrent transportation system as required by GMA. As the Trades Complex would not be occupied until 2015, concurrency would need to be satisfied by 2021, or 6 years from occupancy of the Trades Replacement Complex. As requested by the City of Auburn, discreet intersection improvements at Intersection #1 - 124`' Avenue SE / SE 312" Street, Intersection #2 - 124' Avenue SE / SE 314th Street, and Intersection #3 - 124`' Avenue SE / SE 316th Street were evaluated to determine if planned City improvements or other measures could be implemented to achieve adopted LOS standards. The following paragraphs summarize intersection improvements at the three study intersections that currently do not meet adopted level of service standards. These intersections would not meet adopted level of service standards in 2015 with or without the project. These improvements include projects from the City's existing 2010-2015 TIP, as well as alternatives to those identified in the City's TIP that are provided for purposes of discussion: Revised May 13. 2011 Transportation Engineering Northwest, LLC Page 21 ~ R f t R Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update a 124th Ave SE/SE.312th St 124th Ave SENSE 314th St 124th Ave SE/SE 316th St 124th Ave SENSE 318th St 49 (49) h 66 (66) m 50 (50) (98) (345) (46Q 98 339 46 = E' 199 (199) (2) (964) (36) (819I5) (24)`s F 0 (O) (0) (885) (17){ F 0 (0) 500 (513) 2 (2) 34 (34) SE 312th St SE 318th St Lea Hill Rd SE R ~I SE 3141h St SE 316th SI GRCC Trades Dr (103) 103 - 1 f I (5) 5 t (63) 63 -4 1 t I (9) 0 I (IJ7) 137 - 77 159 141 1 _ 378 (2) 2 4 251 1 (0) 0 0 212 11 (127) 127--X (77) (160) (143) (3) 3 (1) (382) (4) (255) (1) . (4) 4 ~ (6) 0 ~ (32) (207) (11) 124th Ave SENSE 320th St 132ndAve SE/SE 304th St 122nd Ave SE/SE 320th St GRCC West Exit/SE 320th St " R-48 (43) m ~ 313 (313) m R- 1 (1) (416) (465) Q F 12 (9) (111199) (394) F' 535 (548) (1) O) (1) ° E- 421 (423) t- 422 (424) 410 493 GRCC Main Entrance `N 0 (O) SE 3001 S[ SE 320th St SE 3201h St Lea HN Rd SE o` - (2) 2 SE320th St (104) 172 (66) bb (120) 139 (217) 215 (330) 317 --o- 0 0 1 (274) 261 3 219 55 (0) 0 --X (0) (0) (1) (19) (55) GRCC West Entrance/SE.320th St • Lea Hill Rd SE / 105th P[ SE F 102 (104) (466) (5) 12 7 (7) 466 5 pr- 213 (215) 331 (331) SE 3201h St 1051h PI SE (274) 261 --0- t 396 277 (281) 281 2 h (396) (290) Lea Hill Rd SE / 104th Ave SE ~ i _Z SE 288th;5t h V-- 48 (48) . (2 243 0 21 43) (0) (21) ¢ t- 684 (686) 0. Z' t q .e s < I $ o Lea Hill Rd SE _..W (188) 188 I......., ; ; .._i...... 5_E1704th St 1 a 3 ......1._,I ' ,i j $ (676) 663 2 1 T....i......_:._i' =~5ElaB, d~ a (2) (1) (1) (2) 2 s I rlr" Trade X Replace tt enLea HIII Rd SE .SE312 h k L' Y p omplex -p -T i J EMain st..i "1 l Main G RCC p 1` 1... Cam us ' 110n as Legend xx A.M. Peak Hour Volumes without Project <J=-i stn J s (xx) - - A.M. Peak Hour Volumes with Project (Not to Scale) Figure 8 GRCC Trades GA Transportation Replacement Complex ` Engineering 2015 A.M. Peak Hour Northwest, LLC Traffic Volume Impacts Auburn, WA Traffic Impact Study Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 22 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update 124th Ave SE/SE 312th St 124th Ave SE/SE 314th St 124th Ave SENSE 316th St 124th Ave SE/SE 318th 5t N 54 (54) h N R- 34 {34) N 33 (33) (90) (190) (68)3 F 188 ((88) (3) (547) (74) (385) (65)3 F 3 (3) (20) (319) (57)3 F 0 (0) 90 188 68 = 3 541 74 379 6.5 0 333 57- W- 256 (260) I I Ar- 3 (3) Ar-22 (22) s SE 312th St i SE 378th Sf Lea Hiq Rd SE SE 310 St SE 3161h st GRCC Trades Dr (130) 130 t (1) 1- t (59) 59- t (17)0---4 R I t (212) 212 57 1 261 (1) 1 2 444 (1) 1 8 352 1 (0) 0 0 404 38 (101) 101 (57) (173)(265) (2) (451) (7)7--A (8) (359) (1) (10) 0 (8) (394) (38) 124th Ave SE/SE 320th St 132ndAve USE 304th St 122nd Ave SENSE 320th St GRCC West EALISE 320th St " 188 (178) " 436 (436) m - 1 ('1) (256) (97) 8 F 61 (55) (143) (382) € F 391 (395) (1) (0) (1 246 Ill ) 310 (314) F 311 (315) Il' 0 (0) GRCC Main Entrance SE 3041h St SE 3201h St SE 320th St Lea Hill Rd SE (2)2-14 o` SE 320th St (251) 242 (121) 121 1) 36~ (373) 369 {282) 278 N (141) 137--,v,- (J 68 135 (0) 0 2 (0) (0) (1) (68) (135) J1 L~i GRCC West Entrance/SE 320th St • Lea HIII Rd SE / 105th PI SE N 201 (205) (417) (6) 2 (2) 417 6 r. 290 (294) 133 (133) SE 3201h St fastnwsE (105) 101 ---3- 691 334 (78) 78~ °W (691) (338) c~a 3 - Lea Hill Rd SE / 104th Ave SE i SE teem St _ y 28 (28) _ (400) (0) (55),R 645 (649) 400 0 55 1- 0 (0) Lea Hill Rd SE w r: e• _ (946289) 2 942 89 7.1 U' - SE 3Oft St i ~ i a I fi 7oem3t (W (1) (0) .......i_;_ N' m a Trades Re lacement (4) 4 ! Lea HIII Rd SE 3 Mh Se i 151h S1,11f Complex I ~ L.....1a 2rJ. SE 3161h St - - ;o. - SEi320c Sc r:I tv ' : _.a 7i11n S[LIil" Main G RCC p e ) 5 N a.t _ L LL Cam us --..RuhkDkmond. Lake Holm 0.d N 164' ` r Legend h xx P.M. Peak Hour Volumes without Project < xx ss! ( ) P.M. Peak Hour Volumes with Project (Not to Scale) GRCC Transportation . Figure 9 Replacement TradesComplex Engineering 2015 P.M. Peak Hour Northwest, LLC Auburn,, WA Traffic Volume Impacts Traffic Intpatt Study NorthWest, LLC Revised May 13, 2011 Transportation Engineering Page 23 r ~ r Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Table 8: 2015 A.M. Peak Intersection Level of Service Impacts Control Without Project With Project Signalized Intersections Type LOS Delay LOS Delay #1 - 124t' Ave SE / SE 312th St Signalized E 67 E 68 #5 - 124th Ave SE / SE 320th St / Signalized D 48 D 40 GRCC Main Entrance #6 - 132"d Ave SE / SE 304th St Signalized B 17 B 17 #10 - 105" PI SE / Lea Hill Rd SE Signalized B 11 B 11 #11 - 104th Ave SE / Lea Hill Rd SE Signalized B 13 B 14 Control Without Project With Project' Unsignalized Intersections Type LOS Delay LOS Delay #2 - 124th Ave SE / SE 314th St EB F 56 F 60 NB Left B 13 B 14 #3 - 124th Ave SE / SE 316th St EB F > 100 F >100 WB B 13 B 13 NB Left B 13 B 14 SB Left A 8 A 8 #4 - 124th Ave SE / SE 318th St EB D 35 WB B 14 B 15 NB Left - B 11 SB Left A 8 A 8 #7 - 122nd Ave SE / SE 320th St EB Left A 8 A 8 WB Left A 8 A 8 NB B 10 B 10 SB B 14 B 14 #8 - GRCC West Exit / SE 320th St NB B 12 B 12 #9 - GRCC West Entrance / SE 320th St WB Left B 11 B 11 Note: Analysis based on Synchro 6 and HCS 2000 software programs, using HCM 2000 control delays (seconds) and LOS. Intersection #1-124th Avenue SE / SE 312th Street - City TIP project #41 and a portion of #40: This signalized intersection currently experiences left turn demand on the westbound approach that exceeds its available capacity. In order for the intersection to meet adopted LOS standards, a second westbound left turn lane is needed to provide adequate capacity. An additional southbound receiving lane on 124t' Avenue SE would also be needed south of SE 312 1h Street for this improvement to be effective. With this improvement the intersection is forecast to operate at LOS C or better with or without the project in 2015. . Intersection #2 -124th Avenue SE / SE 314th Street: This is an alternative to the City's TIP projects. Delays for eastbound left turning movements from SE 314th Street onto 124`' Avenue SE trigger the level of service deficiency. Demand for these movements, however, represents only 0.3 percent of total entering volumes (only 5 vehicles during peak hours), and therefore, significant improvements to address such a low volume appear unwarranted. The City could implement turning movement restrictions at this location, similar to conditions imposed on private development immediately north of this intersection, modify the methodology for unsignalized level of service to include both stop and yield controlled movements in the delay calculation, or modify the LOS standard for this intersection or corridor. Implementation of turning movement restriction (i.e., right turn only) would improve the level of service of this approach to LOS C or better. Revised May 13, 2011 Transportation Engineering nlorthWest, LLC Page 24 p V Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Table 9: 2015 P.M. Peak Intersection Level of Service Impacts Control Without Project With Project' Signalized Intersections Type LOS Delay LOS Delay #1 - 124" Ave SE / SE 312`' St Signalized D 38 D 38 #5 - 124" Ave SE / SE 320" St / Signalized B 18 B 18 GRCC Main Entrance #6 - 132"d Ave SE / SE 304" St Signalized B 12 B 12 #10 - 105" PI SE / Lea Hill Rd SE Signalized C 20 C 21 #11 - 104" Ave SE / Lea Hill Rd SE Signalized C 22 C 22 Control Without Project With Project' Unsignalized Intersections Type LOS Delay LOS Delay #2-124"Ave SE /SE 314"St EB C 18 C 18 NB Left A 9 A 9 #3-124"Ave SE /SE 316"St EB E, 55 F 60 WB B 14 B 14 NB Left A 9 A 9 SB Left A 9 A 9 #4-124"Ave SE/SE318"St EB C 21 WB B 14 B 15 NB Left A 8 SB Left A 9 A 9 #7 - 122"d Ave SE / SE 320" St EB Left A 8 A 8 WB Left A 8 A 8 NB A 10 A 10 SB B 12 B 12 #8 - GRCC West Exit / SE 320" St NB B 11 B 11 #9 - GRCC West Entrance / SE 320" St WB Left A 8 A 8 Note: Analysis based on Synchro 6 and HCS 2000 software programs, using HCM 2000 control delays (seconds) and LOS. Intersection #3 - 124th Avenue SE / SE 316th Street - part of City TIP project #41 and a portion of #40: Delays for eastbound left turning movements from SE 316' Street onto 124`h Avenue SE trigger the level of service deficiency at this intersection as well. Demand for these movements is moderate with more than 60 vehicles forecasted by 2015 during the a.m. peak hour. Continuation of the existing roadway section recently constructed by GRCC (i.e., two southbound through lanes, a center turning lane, and a northbound through lane) would improve the existing and forecasted LOS deficiency from LOS F to LOS D. Alternatively, construction of a traffic control signal or roundabout treatment as identified in the City's 2010-2015 TIP would also meet the City's adopted LOS standard. Intersection level of service results of these alternative transportation improvement options are located in Appendix A. Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 25 r , Trades Replacement Complex I Green River Community College - Auburn, WA Traffic Impact Study Update Roadway Level of Service Impacts Tables 10 and 11 summarize 2015 roadway level of service impacts during the a.m. and p.m. peak hour on 124" Avenue SE between SE 312" Street and SE 320" Street (includes the westbound approach on SE 312`'' Street as requested by the City) and on SE 3201h Street from the GRCC West Entrance to 124`h Avenue SE. As shown, both roadways sections would operate at LOS C or better without or with the project during the a.m. and p.m. peak hour in 2015, meeting City adopted standards. Roadway level of service analysis is in Appendix C. Table 10: 2015 Roadway Level of Service A.M. Peak Hour Impacts Without Project With Project Travel Travel Travel Travel Time Speed Time Speed Roadway Section Direction (sec) (mph) LOS (sec) (mph) LOS 124th Ave SE' WB Approach on NB 66 26.5 B 66 26.6 B SE 31211 St to WB/SB 198 18.9 C 198 18.9 C SE 320th St SE 320[1 Stz GRCC West Ent. to EB 52 19.0 C 52 19.1 C 124`1 Ave SE WB 33 29.9 B 33 29.9 B Note: Analysis based on Synchro 6, Traffic Signal Coordination Software using HCM 2000 control delays (seconds) and LOS. 1 - Assumes a distance of 0.48 miles northbound and 1.03/1.04 miles westbound/southbound on 1241^ Avenue SE. 2 - Assumes a distance of 0.27 miles on SE 32011 Street. Table 11: 2015 Roadway Level of Service P.M. Peak Hour Impacts Without Project With Project 7rave Travel Travel Travel Speed Time Speed Roadway Section Direction (mph) LOS (sec) (mph) LOS 124`1 Ave SE' WB Approach on NB 66 25.8 B 66 25.8 B SE 312`1 St to WB/SB 158 23.4 C 159 23.4 C SE 320`1 St SE 320th St 11 2t' Ave SE to EB 45 21.7 C 44 21.9 C 124th Ave SE WB 34 28.9 B 34 28.9 B Note: Analysis based on Synchro 6, Traffic Signal Coordination Software using HCM 2000 control delays (seconds) and LOS. 1 - Assumes a distance of 0.48 miles northbound and 1.03/1.04 miles westbound/southbound on 1241h Avenue SE. 2 - Assumes a distance of 0.27 miles on SE 3201h Street. Site Access, Safety, and Circulation Issues A new site access driveway would be provided onto 124`' Avenue SE, opposite SE 318`' Street for access to staff and student parking for the relocated Trades Complex/Trades Replacement Building. Site access improvements on 124th Avenue SE as part of the proposed development would include two southbound through lanes and a new northbound left turn only lane. The applicant would be required to fully fund and construct site driveway improvements onto 124th Avenue SE. As noted earlier, the 124' Avenue SE frontage, site access, and widening improvements would mitigate project impacts and satisfy the City frontage improvement requirements. Frontage improvements will also be required along SE 320[1 Street. As noted in the City's 2010- 2015 TIP, an ultimate 3-lane roadway section is planned along this frontage. Therefore, as part of the Trades Replacement Project, GRCC would construct the northern portion of the SE 320" Revised May 13, 2011 Transportation Engineering Northwest, LLC Page 26 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Street section (i.e., to support the north half of a 3-lane section that includes bike lanes and sidewalk). Parking Impacts A total of 160 off-street parking stalls would be on the Trades Replacement Complex site when completed; 98 stalls would be available for student/staff parking, the existing 22-stall general public parking would remain, and the remaining 40 stalls would be used for the Trades program. Parking Requirements under City Code The City has not adopted a minimum off-street parking requirement for College uses. Currently the off-street parking requirements (per ACC 18.52.020) for colleges and universities is based upon a case-by-case review by the planning director and hearing examiner. As this particular program involves complete relocation of an existing use, parking demand for the facility is fairly straightforward. Ultimately, the new Trades Replacement Complex can support up to 156 students at any one time. The existing program capacity supports 120 students and roughly 50 percent of those are expected to only utilize Trades classes; therefore, demand for parking of approximately 60 existing students and up to 36 new students are expected to be generated at the Trades Replacement Complex. Given known average vehicle occupancies, carpool programs, and other access characteristics at the GRCC campus, demand for approximately 80 stalls for students during peak class loads are estimated. The remainder of the supply would be available for Trades staff parking and Trades programs. Parking Demand Estimates using Site Generated Historical Rates/ITE Rates As found in the GRCC Campus Utilization Study, February 19, 2004, and identified in the ITE Parking Generation, 3' Edition, the peak parking demand at a college/ university land use typically peaks by 11:00 a.m. on an average weekday per that study. Based upon the existing campus/ITE peak parking demand rate of 0.44 stalls per student per that study, Table 12 summarizes future parking demand of the project, generating an estimated 68 stalls of peak demand. Given that the overall campus parking generation rate was lower than using an "activities-based" demand estimate specific to Trades, this overall campus rate was not utilized. Table 12: 2015 Pro posed Action Peak Parkin Demand Estimated Peak Peak Available Student Parking Parking Deficit/ Percent Parkin Type Load Demand Supply Surplus Utilization Trades Replacement 156 68 98 - 30 69% Complex GRCC proposes to implement a Parking Management Program for the Trades Replacement Parking. This Program would provide assigned parking within the main parking supply provided in the project (access off of 124' Avenue SE) to staff and students associated with the Program. Assigned parking would be managed and enforced by existing Security and Facility personnel on a daily basis in coordination with other continual parking monitoring that is performed by GRCC staff at the main campus. Student parking priority would be assigned by seniority throughout the course of the day as program hours and demand fluctuates. Revised May 13, 2011 Transportation Engineering NorthVl/est, LLC Page 27 Trades Replacement Complex r Green River Community College - Auburn, WA Traffic Impact Study Update Public Transportation Impacts Existing King Country-Metro routes serve the GRCC Campus on the south side of SE 3201h Street. A transit stop is also located on 124th Avenue SE at its intersection with SE 316" Street. Existing routes serve the south side of SE 320`h Street only given the exchange of students between coaches and the buildings on campus. This location provides optimal passenger transfer and provides the safest location for transit riders as they do not have to cross any public street to their destination. Retention of this existing transit stop/layover facility is recommended by King County-Metro. Contact with King County-Metro' regarding long-range transit service and facility improvements identified no specific planned service changes or facilities, besides the frequency increase on Route 164 that terminates at the GRCC campus. While planning for future transit service along the north side of SE 320" Street is prudent, King County-Metro indicates it would not currently serve this location given the heavy exchange of riders between transit and the main campus. While there are no specific plans at this time, the site plan for Trades is designed such that a future transit/layover space could be provided as a nearside location of the 122d Avenue SE intersection along the north side of SE 320`' Street as requested by King County-Metro. A reserve area for this potential future facility has been included in the project site plan and proposed frontage improvements. Nonmotorized Transportation Impacts As part of overall GRCC Campus improvements, GRCC is currently in the process of reconstructing 124" Avenue SE with the addition of a 10-foot sidewalk and 6-foot bicycle lane on the west side of the street between SE 316`' Street and SE 320" Street, and a 6-foot bicycle lane between SE 318" Street and SE 320" Street and 4-to 8-foot shoulders between SE 316`h Street and SE 318" Street on the east side of the street. In addition, the College will be extending the existing sidewalk on the east side of 124" Avenue SE from the Student Housing complex north to SE 318" Street. As part of the project, sidewalks would also be constructed along the site frontage of SE 320" Street and a separate trail system would be provided throughout the entire complex (as shown in Figure 2). To accommodate pedestrian crossings between the proposed Trades Replacement Complex and the main GRCC campus, two existing crosswalk facilities are available; an existing marked crosswalk at 122"d Avenue SE and SE 320" Street and the controlled signalized intersection of 124" Avenue SE and SE 320' Street. GRCC also proposes to construct a mid- block pedestrian crossing on SE 320" Street between 122nd Avenue SE and 124" Avenue SE, which is shown on Figure 10. This crossing would be optimally located so as to not conflict with the existing/potential future transit zones on SE 320" Street and to align with major pedestrian building access/egress routes within the Trades Replacement Complex and future planned campus buildings on the south side of SE 320" Street. Historically, a majority of access to the GRCC campus via pedestrian trips is via the 124`h Avenue SE corridor. This demand comes mainly from multifamily complexes east of 124" Avenue SE along SE 312" Street. A majority of this demand occurs along the east side of 124" Source: Based on discussions with King County-Metro staff in a meeting with TENW and SM Stemper on July 8, 2010 (Doug Johnson, Service Planning and David Korthals, Transit Facilities). Revised May 13, 2011 Transportation Engineering North~l/est, LLC Page 28 Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update Avenue SE as this is the most direct pedestrian route into campus from these high density residential complexes. While construction of a continuous sidewalk system along the west side of 124`' Avenue SE between SE 312' Street and SE 320" Street would be completed as part of this project and the roadway improvements funded by GRCC, a significant shift in pedestrian travel from the east side of 124`h Avenue SE to the west side of 124`h Avenue SE is not expected as the pedestrian route along the east side would continue to provide the most direct route for these existing trips. The approximate location and increased demand for pedestrian crossings on SE 320th Street with and without the Trades Replacement Complex are provided in Figure 10 during peak morning . and afternoon hours. As shown, increases in pedestrian crossing maneuvers of SE 320" Street as a result of the Trades Replacement Project would generate an estimated net increase of between 30 and 55 pedestrian trips per hour of SE 320" Street. In the context of long range redevelopment of the main GRCC campus and the Trades Replacement Complex, the mid-block pedestrian crossing proposed by GRCC across SE 320th Street would eventually replace the existing signalized crosswalk on the west side of the 124`h Avenue SE and SE 320" Street intersection when the main campus access is reconstructed. The mid-block crosswalk would have a pedestrian activated push button system to activate both in- pavement and overhead flashers to notify drivers of a crossing movement. In addition, to eliminate any conflict between existing pedestrian routes from off-site generators as well as the on-site campus housing, in its Master Planning effort GRCC is proposing to realign the existing main site access into campus at the 124`h Avenue SE and SE 320`h Street intersection and construct a grade separated pedestrian bridge between the east side of 124`h Avenue SE, campus housing, and the interior of campus. This would significantly enhance the overall operation of the planned intersection improvements and main campus road realignment and, in combination with the proposed mid-block crossing of SE 3201h Street, minimize the overall impact of pedestrian traffic on arterial flow while at the same time eliminating existing points of conflict between pedestrian and vehicle movements on both public streets and interior campus roadways. This would include the heavy pedestrian crossing demand at the existing signal of 124`h Avenue SE and SE 320th Street as well as pedestrian demand between student housing/overflow parking on the northeast of campus and main campus. Transportation Impact Fees The City of Auburn's Transportation Impact Fee Rate Schedule, January 1, 2009, does not currently identify a transportation impact fee for colleges. On a per trip basis, the existing impact fee within the City of Auburn is approximately $3,844 per p.m. peak hour trip (estimated from the existing impact fee rate schedule effective as of January 1, 2009). As the site is estimated to generate approximately 20 net new p.m. peak hour vehicle trips, the transportation impact fee that would be required for the net increase in trips is $76,880 for these trips. The actual fee and credit will be determined at the time of building permit issuance based on the traffic impact fee schedule in effect at that time. The City of Auburn is currently evaluating the eligibility of a potential impact fee credit. Revised May 13, 2011 Transportation Engineering NorthWest, LLC Page 29 I V N CD C(L CD n N ui 3 CD c 3 obi :3' p N to, f '14.'•",,x. _ , _ i.._.^ ,~'Si._:.a.~,...~.....w.t_:L t Existing z Existing C Marked - Ped-Actuated M Crosswalk N `Crosswalk, I , 20 fat Traffic Signal 10 - * moo I 0 20 Proposed Mid-Block LEGEND Raised Crosswal ` Increased Pedsetrian Crossings Ped-Activated Flashing Amber Beacons of SE 320th Street with Trades t & In-Pavement Flashers 20 AM Peak Hour 10 PM Peak Hour C (NUI Snle) CD_ GRCC Trades N Transportation Figure 1 O Replacement Complex Engineering SE 320th Street m o Northwest, LLc Increased Pedestrian Crossings Auburn, WA 0 - - OW Traffic Impact Study m m ' Trades Replacement Complex Green River Community College - Auburn, WA Traffic Impact Study Update PROPOSED PROJECT MITIGATION MEASURES 'a A review of impacts to roadways, intersection levels of service, queuing, site access, safety, and circulation issues, parking, public transportation services, and nonmotorized transportation facilities, was conducted in association with the proposed development. The following items outline recommended mitigation measures to reduce or eliminate project impacts identified for the proposed Trades Replacement Complex. ➢ Construct the proposed site access, frontage, and arterial widening improvements along 124' Avenue SE from SE 320" Street to SE 316`h Street. This mitigation would complete portions of City TIP projects #39, #40, and #42. ➢ Construct frontage improvements along SE 320`' Street and identify a reserve area to allow for potential future installation of a transit zone on the northeast corner of the 122' Avenue E and SE 320" Street intersection. Install a mid-block crossing treatment along SE 320`' Street with pedestrian activated warning system. ➢ Construct the associated internal trail system between site frontage, around the buildings, and to the future City Park to the north of the site. ➢ The applicant is subject to a transportation impact fee administered by the City of Auburn. The actual impact fee and credit evaluation would be performed at the time of building permit issuance. The City of Auburn is currently evaluating the eligibility of a potential impact fee credit due to transportation system improvements completed by the College. ➢ Planned transportation improvements along the 124' Avenue SE corridor are not within the City's Traffic Impact Fee program. To mitigate project impacts at those intersections that would not meet adopted LOS standards with or without the Trades project, a proportional share contribution is proposed. The Trades project proportional share of mitigation is defined as its percentage contribution to intersection entering traffic or added traffic along a roadway segment, which translates to its percentage of intersection improvement costs. Note that some TIP projects identified for the SE 320" Street and 124`h Ave. SE corridors (TIP # 39 and TIP #42) are not related to the Trades project and are not proposed as mitigation. Potential transportation improvements, level of service benefits, and project proportional share estimates are summarized in Table 13. ➢ Develop and implement a Parking Management Program for facilities at the Trades Replacement Complex. This Program would assign parking for staff and students associated with the Trades program within the main parking lot constructed at the site, identify monitoring efforts, and other program elements. The program would be submitted at the time of building permit application. Revised May Transportation Engineering Northwest, LLC 13, g 2031 G~ CD CD ~CD 'm 0 a 3 m N M 3 0 m ? on c 3 0 o CD M -x N Table 13: Proportional Share Estimates Towards Potential Transportation Improvements D C co 2 2015 Level of Total New A Associated 2015 Level of 2015 Level of Potential Servicel(Delay) Total Entering. Project PM Peak Project D City TIP Servicel(Delay) Servicel(Delay) Transportation with Project with PM Peak Hour Hour Traffic Proportional Intersection Project without Project with Project Im rovement2 Improvements Traffic Volumes Volumes Share Install Dual Westbound 171 City TIP LOS E LOS E Left Turn Lanes & LOS G n #1- 124th Avenue SE / SE 312th Street Project #41 (67)' (68)' Southbound Receiving (34)' 1,996 23 1.20% Lane Extend GRCC 92 - 124th Avenue SE I SE 314th Street City TIP LOS F LOS E Roadway Cross LOS C 1,376 23 1.70% (Eastbound slop controlled approach) Project #40 (56)' (60)' Section' from BE 316th (17)' to BE 312th Extend GRCC #3 - 124th Avenue SE 1 SE 316th Street City TIP LOS F LOS E Roadway Cross LOS D 1 371 23 1.70°,0 (Eastbound slop controlled approach) Project #40 (>100)' (>100)' Section' from SE 316th (28)1 to BE 312th 1 -Average control delay pervehicle In seconds.. 2 -The GRCC Roadway Gross-Sectlon built south of BE 316th Street consists of 2 southbound through lanes, a center turning lane, and a northbound through lane. CD Q W N ~ C CL m W cn N C CD O L w m N ~ ~ Appendix A Intersection Level of Service Calculations Transportation Engineering NorthWest, LLC ! 1 ~ 1 3 HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: JGT Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #2-SE 314th St/124th Ave SE Jurisdiction: City of,.Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades Replacement Complex East/West Street: SE 314th St North/South Street: 124th Ave SE IntersectiooNrientation 1 NS"~p ,:Study: period (hrs)':s 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 1 356 908 2 Peak-Hour Factor, PHF 0.85 0.85 0.85 0.85 Hourly Flow Rate, HFR 1 418 1068 2 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 0 1 1 0 Configuration LT TR Upstream Signal? No Yes Minor Street: Approach Westbound Eastbound Movement 7 8 9 10 11 12 L T R I L T R Volume 5 3 Peak Hour Factor, PHF 0.85 0.85 Hourly Flow Rate, HFR 5 3 Percent Heavy Vehicles 0 0 Percent Grade ( 0 0. Flared Approach: Exists?/Storage / No / Lanes 0 0 Configuration LR Delay,-Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 1 7 8 9 10 11 12 Lane Config LT I I LR v (vph) 1 8 C(m) (vph) 479 99 v/c 0.00 0.08 95% queue length 0.01 0.26 Control Delay 12.5 44.5 LOS B E Approach Delay 44.5 Approach LOS E HCS2000: Unsignalized Intersections Release A.1-f _TWO-WAY- STOP 'CONTROL SUMMARY t Analyst: Agency/Co.: TENW Date Performed: 06/07/2010 Analysis Time Period: AM Peak Intersection: #3-SE 316th` St'&"-124th Ave''-'SE - Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: Trades Replacement Complex"-'GRCC East/West Street: SE 316th St North/South Street: 124th Ave SE Intersection- Orient a"tion. NS; Study period,"(hrs)0.254 . _.,Vehicle:Volumes,'-and Adjustments Major Street: Approach`Northbound Southbound ''Movement 1 2 3 I 4 -5~ :6 L T R L T R Volume 4 236 1 - 23 843 34 Peak-Hour Factor, PHF 0.83 0.83 0.83 0.83 0:83 -:0:83 Hourly Flow Rate, HFR- 4 284 1 u 27 101'5 Percent Heavy-Vehicles 7 1 Median Type/Storage Undivided RT Channelized? Lanes - 0 1 0 0 1 0 Configuration = LTR LTR Upstream Signal? Yes Yes Minor Street: Approach's-' Westbound = Eastbound, Movement -7 8 ' 9 10 11 T 12 L T' R I L T R Volume 2 0 62 59 2 4 °0:83 Peak Hour Factor, PHF 0.83 ';0183 0.83 0.83 0`i83 Hourly Flow-Rate, HFR 2 0;;= 74 71 2% 4..` Percent Heavy. Vehicles 6 6' 6 3 3 •3 Percent Grade (o) 0 0 Flared Approach: Exists?/Storage No / No Lanes 0 1 0 0 1 0 Configuration LTR LTR De.la:y,,"Queue' Len"gth;?:and:Level:`.of, Service- Approach 'NB SB b` Westbound ;"Eastbound movement- - 1- 4 7 8 9 I 10 11 12 Lane Config LTR LTR I LTR I LTR .v (vph) 4 27 76 77 C(m) (vph) 481 1283 591 61 v/c 0.01 0.02 0.13 1.26 95% queue length 0.03 0.06 0.44 6.47 Control Delay 12.5 7.9 12.0 315.4 LOS B A B F Approach Delay 12.0 315.4 Approach LOS B F HCS2000: Unsignalized Intersections Release 4.1f-", TWO-WAY STOP. CONTROL --;SUMMARY Analyst: Agency/Co.: TENW Date Performed: 06/07/2010 Analysis Time Period: AM Peak Intersection: #4-SE 318th St & 124th Ave.SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: Trades Replacement Complex-,-GRCC..•, - East/West Street: SE 318th St North/South Street: 124th Ave SE Intersection Orientation: NS. Study period (hrs)0.25 Vehicle -Vo,lumes.,and-,Adjustments-. . Major Street: Approach,;, Northbound;,. Southb'ouhd." ,Movement 1 2 3 I 4 5 6 L T R L T R Volume 200 1.0 16 - 833 Peak-Hour Factor, PHF 0.85 0.85 0.85 0:,85 , Hourly Flow Rate, HFR 235 11,. 18 979, Percent Heavy-Vehicles - 2 Median Type/Storage Undivided RT Channelized? Lanes 1 0 0 1 Configuration TR LT Upstream Signal? Yes No Minor Street: Approach:. Westbound Eastbound ; Movement 7 8 9 10 11 12 L T R' L T R Volume 32 47, Peak Hour Factor, PHF 0.85 '0,.85 Hourly Flow Rate, HFR 37 55, Percent Heavy Vehicles 0 0 Percent Grade 0 0 Flared Approach: Exists?/Storage No / Lanes 0 0 Configuration LR Delay; Queue., Lengthy: and ;Level_ of Servic,e Approach NB SB ,Westbound Eastbound Movement: 1 4 7 8 9 10 11 12. Lane Config LT LR v (vph) 18 92 C(m) (vph) 1329 341 v/c 0.01 0.27 95% queue length 0.04 1.07 Control Delay 7.7 19.4 LOS A C Approach Delay' 19.4 Approach LOS C HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP,=CONTROL' SUMMARY = - Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection:. #7-SE 320th St/_~122nd.Ave SE 711 Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades ReplacementrComplex ? East/West Street:. SE 320th.St North/South Street: 122nd Ave SE Intersection' .Orien'tation:_~,EW... Study periodc:(hrs) 0.25. Vehicler:Volume_s.and•.Adjustments Major Street: Approach Eastbound'-Westbound,.-,` Movement 1 1 2 r 3 4 •5 --6 L` T R L T R Volume 2 299- 0 0 397 1 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 0:921 0,.•92 Hourly Flow Rate, HFR'- 2 324 0 0 431 sl._ .Percent Heavy Vehicles 2 2 - Median Type/Storage Undivided / RT Channelized? Lanes 0 1 0 0 1 0 Configuration LTR LTR Upstream Signal? No Yes Minor Street: Approach<.c 'Northbound :..r.. SouthboundA. Movement ;'7 8 6: 9 I 10 11 - . 12 L T R L T R Volume 0 0") 1 -1 0 1 Peak Hour Factor, PHF 0.92 "0.92 0.92 <..0.92 0':;92, -0.92 Hourly Flow Rate, HFR 0 01 1 0 Percent Heavy Vehicles 2 2 2 2 2- 2 Percent Grade (o) 0 0 - Flared Approach: Exists?/Storage No / No Lanes 0 1 0 0 1 0 - Configuration LTR : LTR Delay,:-9QueuecLength, .and Level of~,Service , Approach EB WB Northbound Southbound Movement 1' .4 ;1 7 8 9 = 10 11 12 Lane Config LTR LTR '1" LTR I LTR v (vph) 2 0 -L 1 2 C (m) (vph) 1128 1236` 71.7' ? 425 v/c 0.00 0:00 0":00: 0.00 95% queue length 0.01 O .-M 0.00 0.01 ; Control Delay 8.2 7:9,; 10.0± 13.5 LOS A A : B B Approach Delay 10.0+ 13.5. Approach LOS B B HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #8-SE 320th St/GRCC West Exit Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: GRCC West Exit Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 246 398 Peak-Hour Factor, PHF 0.92 0.92 Hourly Flow Rate, HFR 267 432 Percent Heavy Vehicles Median Type/Storage Undivided / RT Channelized? Lanes 1 1 Configuration T T Upstream Signal? No Yes Minor Street: Approach Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume 29 55 Peak Hour Factor, PHF 0.92 0.92 Hourly Flow Rate, HFR 31 59 Percent Heavy Vehicles 2 2 Percent Grade 0 0 Flared Approach: Exists?/Storage Lanes 1 1 Configuration L R Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config I L R v (vph) 31 59 C(m) (vph) 406 772 v/c 0.08 0.08 95% queue length 0.25 0.25 Control Delay 14.6 10.0+ LOS B B Approach Delay 11.6 Approach LOS B HCS2000: Unsignalized Intersections Release 4.1f :a TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #9-SE 320th St/GRCC West Entr Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: GRCC West Entrrance Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 246 281 331 96 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 267 305 359 104 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 1 1 Configuration TR L T Upstream Signal? No No Minor Street: Approach Northbound Southbound Movement 7 8 9 10 11 12 L T R I L T R Volume Peak Hour Factor, PHF Hourly Flow Rate, HFR Percent Heavy Vehicles Percent Grade (o) 0 0 Flared Approach: Exists?/Storage Lanes Configuration Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 10 11 12 Lane Config L I v (vph) 359 C(m) (vph) 1001 v/c 0.36 95% queue length 1.64 Control Delay 10.6 LOS B Approach Delay Approach LOS HCS2000: Unsignalized Intersections :Release 4.1f, TWO-WAY ,-,STOP,CONTROL " SUMMARY r Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #2-SE 31,4th St/,124th,_Ave SE", Jurisdiction: City of Auburn _ Units: U. S. Customary - Analysis Year: 2015 Without Project Project ID: GRCC Trades Replacement;Complex East/West Street: SE 314th St North/South Street: 124th Ave SE _ Intersection Orientation::NS>. Study periodc(hr..s):rX0;.25 - Vehicle, Volumes ;and=Adjustments., Major Street: Approach Northbound Southbound` ,Movement 11 2 3 4 5 6 L_ T R L T R Volume 1 378; 964 2 Peak-Hour Factor, PHF' .0..85 0'.85 0:;85 ;0:85 Hourly Flow Rate, HFR 1' 4'44. 1134 2;,. Percent Heavy Vehicles- 21. Median Type/Storage Undivided RT Channelized? Lanes 0 1 1 0 Configuration LT TR Upstream Signal? No Yes - Minor Street: Approach "c" Westbound.,., Eastbound.,;. Movement 8 9 10 ,i11~r,~ T'12 L T R L T R Volume 5 3 Peak Hour Factor, PHF 0.85 0.:85 Hourly Flow Rate, HFR 5 3.`?. Percent Heavy Vehicles 0 0 Percent Grade 0-0 Flared Approach: Exists?/Storage / No Lanes 0 0 Configuration LR Delay,-- Queue 'Length, E and.Leveh. of. Service Approach NB SB '~Westbbund Eastbound Movement 1 - 4 1' 7 8 9 10 - 11 12;:,. " Lane Config LT LR v (vph) 1 8 C(m) (vph) 429 78, v/c 0.00 0.10 95% queue length 0.01 0-:33; Control Delay 13.4 56.4,.. . LOS B F Approach Delay Approach LOS F HCS2000: Unsignalized Intersections Release 4.1f Z TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 6/7/2010 Analysis Time Period: AM Peak Intersection: #3-SE 316th St & 124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project Project ID: Trades Replacement Complex - GRCC East/West Street: SE 316th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 1 4 5 6 L T R I L T R Volume 4 251 1 24 895 36 Peak-Hour Factor, PHF 0.83 0.83 0.83 0.83 0.83 0.83 Hourly Flow Rate, HFR 4 302 1 28 1078 43 Percent Heavy Vehicles 7 1 Median Type/Storage Undivided / RT Channelized? Lanes 1 1 0 1 1 0 Configuration L TR L TR Upstream Signal? Yes Yes Minor Street: Approach Westbound Eastbound Movement 7 8 9 I 10 11 12 L T R I L T R Volume 2 0 66 63 -2 4 Peak Hour Factor, PHF 0.83 0.83 0.83 0.83 0.83 0.83 Hourly Flow Rate, HFR 2 0 79 75 2 4 Percent Heavy Vehicles 6 6 6 3 3 3 Percent Grade 0 0 Flared Approach: Exists?/Storage No / No / Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 1 10 11 12 Lane Config L L 1 LTR I LTR v (vph) 4 28 81 81 C(m) (vph) 438 1264 562 49 v/c 0.01 0.02 0.14 1.65 95% queue length 0.03 0.07 0.50 7.86 Control Delay 13.3 7.9 12.5 501.5 LOS B A B F Approach Delay 12.5 501.5 Approach LOS B F ~ I HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 6/7/2010 Analysis Time Period: AM Peak Intersection: #4-SE 318th St & 124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project Project ID: Trades Replacement Complex - GRCC East/West Street: SE 318th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume 212 11 17 885 Peak-Hour Factor, PHF 0.85 0.85 0.85 0.85 Hourly Flow Rate, HFR 249 12 19 1041 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 1 2 Configuration TR L T Upstream Signal? Yes No Minor Street: Approach Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 34 50 Peak Hour Factor, PHF 0.85 0.85 Hourly Flow Rate, HFR 39 58 Percent Heavy Vehicles 0 0 Percent Grade 0 0 Flared Approach: Exists?/Storage No Lanes 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 1 7 8 9 10 11 12 Lane Config L LR v (vph) 19 97 C (m) (vph) 1309 522 v/c 0.01 0.19 95% queue length 0.04 0.68 Control Delay 7.8 13.5 LOS A B Approach Delay 13.5 Approach LOS B HCS2000: Unsignalized Intersectio`ns'-Release 4:1-f -.TWO-WAYSTOP -CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak " Intersection: #7-SE 320th St/122nd-Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis -Year: 2015 Without Proj'e'ct Project ID: GRCC Trades Replacement Comp'1ex East/West Street: SE 320th St North/South Street: 122nd Ave SE Intersection Orientation: "EW Study period Ahrs)': 0".25 _Vehic,le Vo'.lumes' and Adju`s•tments ' Major Street: Approach Eastbound Westboundlt 'Movement 1 2 3 1 4 5. 6 L T R I h T R Volume 2 317 0 0 421 1 Peak-Hour Factor, PHF 0.92 0.92 =0.92 0.92 0:'92• 0-.92 Hourly Flow Rate, HFR 2 344 01. 0 45.7`: 1 Percent Heavy,,-Vehicles 2 2 Median Type/Storage Undivided /j RT Channelized? Lanes 0 1 0 0 1 0 Configuration LTR LTR Upstream Signal? No Yes Minor Street: Approachi = Northbound Southbound.- Movement '7 8 9 I 10 11r1T 12 L T R- L" T R Volume 0 0 l F'1 0 1 Peak Hour Factor, PHF 0.92 0.92 0.92 k:.0.92 0-.92' `0.'92 Hourly Flow Rate, HFR 0 0 1 1 0 1 Percent Heavy Vehicles 2 2 2 2 2 2` Percent Grade 0 0 Flared Approach: Exists?/Storage No No / Lanes 0 1 0 0 1 0 Configuration LTR LTR _ Delay Queue,'-Length,'-and,Level :,of;iService , Approach --•EB - WB Northbound "Southbound Movement, r- 1 '4 "1 7 8 9 1 10 11 12 Lane Config LTR LTR I LTR .L LTR v (vph)_ 2 0 1 2 C(m) (vph) 1103 1215" 699 400 v/c 0.00 0.00` 0:00 0.00 95% queue length 0.01 0:00 0,:00 0:02 Control Delay 8.3 8.0~ 10.2 14.0 LOS A A B B Approach Delay 10.2 14.0 . Approach LOS B B 2 HCS2000: Unsignalized Intersections Release-4,,lf, TWO-WAY STOP CONTROL.SUMMARY-. _ Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #8-SE 320Th St/,GR= West,Exit. Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015. Without Project Project ID: GRCC Trades Replacement;,Complex"_, 4 East/West Street: SE 320th St North/South Street: GRCC West Exit Intersection. Orientation:..EW:; Study period;,(hrs) ;0 25 Vehicle Uglumes:;and.Adj:ustments Major Street: Approach Eastbound Westbound„ .Movement 1 2 3 4 51 6 L T- R L T R Volume 261. 422 Peak-Hour Factor, PHF -0.92 Hourly Flow Rate, HFR 283 458, o „ Percent Heavy Vehicles - - Median Type/Storage Undivided / RT Channelized? Lanes 1 1 Configuration T T Upstream Signal? No Yes Minor Street: Approach Northbound - Southbound .:Movement 7 8 9 10 11_-_= 12 V L T R L T R Volume 29 55 Peak Hour Factor, PHF' _.0.92 0.92 . Hourly Flow Rate, HFR 31 59. Percent. Heavy Vehicles 2 2 Percent Grade (o) 0 0 _ Flared Approach: Exists?/Storage Lanes 1 1 Configuration L R Delay; Queue Length,,:and,Level-of;;Service;; Approach EB WB E,:_r,LNorthbound ,-;Southbound Movement:-' 4 1 7 8 9 10 11 12 Lane Config " L R v (vph) 31 59 _ C(m) (vph) 384.. 756 v/c 0:08.; 95% queue length' 0:26' 0-:25' Control Delay".e 15.2 10'.2; LOS C B Approach Delay 11.9 Approach LOS B i 7 HCS2000: Unsignalized Intersections Release 4.1f a TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #9-SE 320th St/GRCC West Entr Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: GRCC West Entrrance Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 261 281 331 102 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 283 305 359 110 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 1 1 Configuration TR L T Upstream Signal? No No Minor Street: Approach Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume Peak Hour Factor, PHF Hourly Flow Rate, HFR Percent Heavy Vehicles Percent Grade M 0 0 Flared Approach: Exists?/Storage Lanes Configuration Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config L I v (vph) 359 C(m) (vph) 987 v/c 0.36 95% queue length 1.68 Control Delay 10.7 LOS B Approach Delay Approach LOS J 1 • 1 , J HCS2000: Unsignalized Intersections Release-4:1-f z TWO-WAY STOP,CONT.ROL SUMMARY Analyst: JGT Agency/Co.: TENW Date Performed: 07/22/2010 - Analysis Time Period: AM Peak Intersection: #2-SE 314th St4124th,Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement.•Complex East/West Street: SE 314th St North/South Street: 124th Ave SE Intersection.Orientation:. NS,• Study period. (hr,s) ;,0.25 Vehicle-Volumes_.and,Adjustments Major Street: Approach:; Northbound:- Southbound;,, :.Movement 1 2 3 1 4 5 6 L T R L T R Volume 1 382 983 2 , , Peak-Hour Factor, PHFd 0.85 `0.85 0.85 0:85 Hourly Flow Rate, HFR, ,1 449, 1156 ,-2; Percent Heavy-Vehicles 2 Median Type/Storage Undivided RT Channelized? Lanes 0 1 1 0 Configuration LT TR - Upstream Signal? No Yes Minor Street: Approach Westbound. Eastbound; Movement 7 8 9 I 10 -_12 L T R L T R Volume 5 _ 3- Peak _ . _ a_ Peak Hour Factor, PHF 0.85 0.:815 Hourly Flow Rate, HFR 5 3 Percent Heavy Vehicles 0 -,0 Percent Grade 0 0 Flared Approach: Exists?/Storage / No. Lanes 0 0 - Configuration LR Delay; Queue Length, and.Leveliof,Service,a Approach NB SB ;,Westbound ,;,Eastbound Movement 1 4 7 8 9 10 11 12-. . Lane Config LT LR v (vph) 1 8 j C(m) (vph) 415 74 v/c 0.00 0.11 95% queue length 0.01 0.3.5 Control Delay 13.7 59.5 LOS B F Approach Delay 59.5„ Approach LOS F HCS2000: Unsignalized-Iritersections-Release 4:lf TWO-WAY•'STOP CONTROL 'SUMMARY' Analyst: Agency/Co.: TENW Date Performed: 6/7/2010 Analysis Time Period: AM Peak Intersection: #3-SE 316th" St`-& I-24th Ave''-SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: Trades Replacement Complex -='GRCC, East/West Street: SE 316th St North/South Street: 124th Ave SE Intersection Orientation: NS' - Study period 0'.25 Vehicle ;Vol`umes` -"and'-Adjii's"tmehts Major Street: Approach " Northbound-''- Southboundf~' 'Movement 1 2 3 I 4 5` = 6 L T R I L T R Volume 4 255 24 914 36 Peak-Hour Factor, PHF 0'.83 -0.83 -0.83 -0.83 0.831 0.83 Hourly Flow Rate, HFR °4 307- 1; 28 1101' 43 Percent Heavy'Vehicles 7 --V 1- Median Type/Storage Undivided RT Channelized? Lanes 1 1 -0 1 1- 0 Configuration L TR L TR Upstream Signal? Yes- Yes Minor Street: Approach Westbound-" Eastbound.?: Movement 7 8 9 I 10 12 L T R L T R. Volume 2 66 =63 2 4 r Peak Hour Factor, PHF 0:83 0.83 0.83 0.83 0.83 0.83 Hourly Flow Rate, HFR 2 79`-7-5 24• Percent Heavy Vehicles 6 6 6 3 3 3 Percent Grade (o) 0 0 Flared Approach: Exists?/Storage No No Lanes 0 1 0 0 1 0 Configuration LTR LTR _ Dela"y; ,,Queue'Length,': and, Leve'l -of:.Service.-,.i Approach NB SB .---,-,Westbound Eastbound Movement 1 '4 17 8 9 10 11 12 Lane Config L L I LTR I LTR v (vph) 4 28 81 81 C(m) (vph) 422 1258 546 45 v/c 0.01 0.02 0.15 1.80 95% queue length 0.03 0.07 0.52 8;.20- Control Delay 13.6 7.9 12.7 576.8: LOS B A B F Approach Delay- 12.7 576:8 Approach LOS B F . 4 J HCS2000: Unsignalized Intersection's Release ,4.1f a TWO-WAY STOP.CONTROLr-SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 ry Analysis Time Period: AM Peak Intersection: #4-SE 31;8th,St/124th Ave SE; Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Tradex Replacement Complex, East/West Street: SE 318th St - North/South Street: 124th Ave SE -Intersection` ,Orientat~ion,:•" NS - Study pe,riod,,-("hr,,s) . 0 25 Vehicle Vol-umes,, and :Adjustments. Major Street: Approach.. Northbound - Southbound :Movement 1. 2 3 .1 4 5 6 L T- R- I L T R Volume ! 32 207 l 17 -853 -51 Peak-Hour Factor, PHF 0'.92 0.85 0,85 01.85 0.;85 .0.92,E Hourly Flow Rate, HFR 34 243 12.= 19 1003 55 k Percent Heavy Vehicles 2 2 --r Median Type/Storage Undivided RT Channelized? Lanes 1 1 ,0 1 2 0 Configuration L TR L T TR Upstream Signal? Yes No Minor Street: Approach-.-.,_ Westbound Eastbound Movement 7 8 9 I 10 11 .,:..12 L T R I L T R SO:i 9 0 6.._..__.. Volume 34 0 Peak Hour Factor, PHF 0.85 0.92 0.85 0.92 .0-.92 Hourly Flow Rate, HFR : 39 0:, 58 9 0 6 t, Percent Heavy Vehicles 0 2 0 2 2.: 2 Percent Grade M 0 0 Flared Approach:. Exists?/Storage No / No Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay,-Queue.,Leng:th, and,, Level of;_ Service; Approach NB SB Westbound _ ,rEastbound_ f Movement. 1 4 17 8 9 1 10 11 12 . Lane Config L L I LTR LTR v (vph) 34 19 97 15.. . C(m) (vph) 654 1322 460 135 v/c 0.05 0.01 0.21 < 0.11 95% queue length" 0.16 0.04 0.79 0.37,. Control Delay 10.8 7.8 14.9 35.0, .LOS B A B D Approach Delay 14.9 35.0:.- Approach LOS B D HCS2000: Unsignalized Intersections Release 4.1f :I TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #7-SE 320th St/122nd Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: 122nd Ave SE Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 4 5 6 L T R I L T R Volume 2 330 0 0 423 1 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 2 358 0 0 459 1 Percent Heavy Vehicles 2 2 Median Type/Storage Undivided / RT Channelized? Lanes 0 1 0 0 1 0 Configuration LTR LTR Upstream Signal? No Yes Minor Street: Approach Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume 0 0 1 1 0 1 Peak Hour Factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 0 0 1 1 0 1 Percent Heavy Vehicles 2 2 2 2 2 2 Percent Grade 0 0 Flared Approach: Exists?/Storage No / No / Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 I 10 11 12 Lane Config LTR LTR I LTR I LTR v (vph) 2 0 1 2 C(m) (vph) 1101 1201 686 393 v/c 0.00 0.00 0.00 0.01 95% queue length 0.01 0.00 0.00 0.02 Control Delay 8.3 8.0 10.3 14.2 LOS . A A B B Approach Delay 10.3 14.2 Approach LOS B B HCS2000: Unsignalized Intersections Release 4.1f I TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: '07/22/2010 Analysis Time Period: AM Peak Intersection: #8-SE 320th St/GRCC West Exit Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: GRCC West Exit Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 1 4 5 6 L T R I L T R Volume 274 424 Peak-Hour Factor, PHF 0.92 0.92 Hourly Flow Rate, HFR 297 460 Percent Heavy Vehicles Median Type/Storage Undivided / RT Channelized? Lanes 1 1 Configuration T T Upstream Signal? No Yes Minor Street: Approach Northbound Southbound Movement 7 8 9 1 .10 11 12 L T R I L T R Volume 29 55 Peak Hour Factor, PHF 0.92 0.92 Hourly Flow Rate, HFR 31 59 Percent Heavy Vehicles 2 2 Percent Grade M 0 0 Flared Approach: Exists?/Storage Lanes 1 1 Configuration L R Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 I 10 11 12 Lane Config 1 L R v (vph) 31 59 C(m) (vph) 375 742 v/c 0.08 0.08 95% queue length 0.27 0.26 Control Delay 15.5 10.3 LOS C B Approach Delay 12.1 Approach LOS B HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 07/22/2010 Analysis Time Period: AM Peak Intersection: #9-SE 320th St/GRCC West Entr Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: GRCC West Entrrance Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 274 281 331 104 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 297 305 359 113 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 1 1 Configuration TR L T Upstream Signal? No No Minor Street: Approach Northbound Southbound Movement 7 8 9 I 10 11 12 L T R I L T R Volume Peak Hour Factor, PHF Hourly Flow Rate, HFR Percent Heavy Vehicles Percent Grade (o) 0 0 Flared Approach: Exists?/Storage Lanes Configuration Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config L I v (vph) 359 C(m) (vph) 975 v/c 0.37 95% queue length 1.71 Control Delay 10.8 LOS B Approach Delay Approach LOS HCS2000: Unsignalized Intersections;Release,4.lf=.- TWO-WAY;-S-TOPS-CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #2-SE, 314th.St/1=24th,.-Ave SE,- Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades Replacement;:Complex- East/West Street: SE 314th St North/South Street: 124th Ave SE F11 - j Intersection Orientation: NS: Study period,-:(hr_s) 0.25 Vehicle,!Volume-s,-;and._Adjustments ; , -e Major Street Approach Northbound Southbourid_,P_ Movement 1 2 3 4 5 . an 6 L T R L T R Volume 4,18 ~510 Peak-Hour Factor, PHF 0.85 0.85 0,.;85 0.8.5. Hourly Flow Rate, HFR 2 491 5,99; Percent Heavy-Vehicles 2 Median Type/Storage Undivided RT Channelized? Lanes 0 1 1 0 Configuration LT TR Upstream Signal? No Yes Minor Street: Approach Westbound Eastbound Movement 7 8 " 9 10 1-1 12 L T R L T.....- R Volume 1 Peak Hour Factor, PHF 0.85 Hourly Flow Rate, HFR 1 1 Percent Heavy Vehicles 0 0: Percent Grade M 0 0 Flared Approach: Exists?/Storage No f''/•_ Lanes 0 0 Configuration LR Delay,. Queue Length,;.-and, Level of„Service Approach NB SB Westbound ,.?Eastbound Movement'' 1 4I 7 8 9 I 10 11 12 Lane Config LT I I LR v (vph) 2 2 C(m) (vph) .946 313 v/c 0.00 0.01 95% queue length 0.01 0.02. Control Delay 8.8 16.6,: LOS A C Approach Delay 16.6: Approach LOS C HCS2000: Unsignalized Intersections` Release 4:1f _....TWO-.WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 06/07./2010 Analysis Time Period: PM Peak Intersection: #3=SE 316th"St &~'124th Ave'SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: Trades Replacement Complex GRCC' East/West Street: SE.316th St North/South Street: 124th Ave SE Intersection Orientatio'n`:'-NS'.- - Study-period (hrs): 0.25 Vehicle Volumes'and.Adjustments Major Street: Approach Northbound Southbound- Movement 1 2 3 4 5 ~-.6 L T R L T R Volume -8 332 1' 61 357 70 Peak-Hour Factor, PHF- 0.80 0.-8.0 =.0.80 0.80 0:80 0.80 Hourly Flow Rate, HFR. 414 1 76 446: 87° ` Percent Heavy Vehicles, 2 - - 1 Median Type/Storage Undivided / RT Channelized? Lanes 0 10 0 1 0 Configuration LTR LTR Upstream Signal? Yes Yes Minor Street: Approach Westbound"'-, Eastbound.;: Movement 7 8 9 y 10 11, 12 L T R L T R Volume 3 3• 32 =56' 1 7 Peak Hour Factor, PHF 0.80 '0.80 0.80 0.80 0.80 0:80 Hourly Flow Rate, HFR 3 3- v 39 X69 1_ . 8, Percent Heavy Vehicles 0 0 0 0 0, -'0 Percent Grade 0 0 - Flared Approach: Exists?/Storage No Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue- Length,;."and: Level of Service; Approach W NB SB „We"s_tbbund- Eastbound 4 17 8 9 I 10 11 12 movement- Lane Config LTR .LTR I - LTR I LTR v (vph) 9 76 45 78 C(m) (vph) 1016 1146 474 167 v/c 0.01 0.07 0.09 0.47 95% queue length 0.03 0.21 0.31 2.20, Control Delay 8.6 8.4 13.4 44.2. LOS A A B E Approach Delay 13.4 44.2 Approach LOS B E HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 06/07/2010 Analysis Time Period: PM Peak Intersection: #4-SE 318th St & 124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: Trades Replacement Complex - GRCC East/West Street: SE 318th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 1 4 5 6 L T R I L T R Volume 380 36 53 314 Peak-Hour Factor, PHF 0.85 0.85 0.85 0.85 Hourly Flow Rate, HFR 447 42 62 369 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 0 1 Configuration TR LT Upstream Signal? Yes No Minor Street: Approach Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 21 31 Peak Hour Factor, PHF 0.85 0.85 Hourly Flow Rate, HFR 24 36 Percent Heavy Vehicles 0 0 Percent Grade 0 0 Flared Approach: Exists?/Storage No Lanes 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 I 10 11 12 Lane Config LT LR v (vph) 62 60 C(m) (vph) 1063 404 v/c 0.06 0.15 95% queue length 0.19 0.52 Control Delay 8.6 15.5 LOS A C Approach Delay 15.5 Approach LOS C HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #7-SE 320th St/122nd Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: 122nd Ave SE Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 2 262 0 0 292 1 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 2 284 0 0 317 1 Percent Heavy Vehicles 2 2 Median Type/Storage Undivided / RT Channelized? Lanes 0 1 0 0 1 0 Configuration LTR LTR Upstream Signal? No Yes Minor Street: Approach Northbound Southbound Movement 7 8 9 10 11 12 L T R I L T R Volume 0 0 1 1 0 1 Peak Hour Factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 0 0 1 1 0 1 Percent Heavy Vehicles 2 2 2 2 2 2 Percent Grade M 0 0 Flared Approach: Exists?/Storage No / No / Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config LTR LTR I LTR I LTR v (vph) 2 0 1 2 C(m) (vph) 1242 1278 755 522 v/c 0.00 0.00 0.00 0.00 95% queue length 0.00 0.00 0.00 0.01 Control Delay 7.9 7.8 9.8 11.9 LOS A A A B Approach Delay 9.8 11.9 Approach LOS A B 1 1 f f HCS2000: Unsignalized Intersections:.Release.4.1f TWO-WAY,STOP CONTROL SUMMARY:;; Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #8-SE 320th S,t/GRCC;,West Exit Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2009 Existing Project ID: GRCC Trades Replacement.-Complex t East/West Street: SE 320th St North/South Street: GRCC West Exit Intersection.Orientation::EW, Study period-:(hrs) :0.25 Vehicle -Vo,lumes;;and;,Adjustments Major Street: Approach , Eastbound, Westbound{ .'Movement 1 2 3' 4 6 L T R L T R Volume 129 2 9 3_....__ Peak-Hour Factor, PHFi, _0.92 0:92, Hourly Flow Rate, HFR., 140 3118 Percent Heavy-Vehicles - Median Type/Storage Undivided 4 RT Channelized? Lanes l 1 Configuration T T Upstream Signal? No Yes Minor Street: Approach; Northbound,,, Southbound ,Movement 7 8 = 9 10 11•- 12 L T R I L T R Volume 68 135 Peak Hour Factor, PHF' 0.92 0,. 92 Hourly Flow Rate, HFR`! 73. 146 Percent Heavy Vehicles 2 2 . Percent Grade 0 0 Flared Approach: Exists?/Storage Lanes 1 wr 1 Configuration L R De_La.y;•- Queue, Leng,th,; and,--Level- "qf: Service Approach EB WB ;Northbound Southbound` Movement 1 4 7 8 9 ;.I 10. 11 12 Lane Config I L R.. v (vph) 73 146; C (m) (vph) 561 908_.; V / c 01;. 13 0::,161, 95% queue length- 0:.45; Q:57 , Control Delay 12.4 9:;71 LOS B A Approach Delay. 10.6 Approach LOS B HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #9-SE 320th St/GRCC West Entr Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year:. 2009 Existing Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: GRCC West Entrance Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 4 5 6 L T R L T R Volume 95 78 133 189 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 103 84 144 205 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 1 1 Configuration TR L T Upstream Signal? No No Minor Street: Approach Northbound Southbound Movement 7 8 9 10 11 12 L T R L T R Volume Peak Hour Factor, PHF Hourly Flow Rate, HFR Percent Heavy Vehicles Percent Grade 0 0 Flared Approach: Exists?/Storage Lanes Configuration Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 7 8 9 1 10 11 12 Lane Config L v (vph) 144 C(m) (vph) 1387 v/c 0.10 95% queue length 0.35 Control Delay 7.9 LOS A Approach Delay Approach LOS J J HCS2000: Unsignali zed Intersections. Release 4.lf TWO-WAYf,STOP.' CONTROL' SUMMARY'':: Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #2-SE 314th St/!124th'Ave:SE'' Jurisdiction: City of Auburn u, Units: U. S. Customary r Analysis Year: 2015 Without Project _ Project ID: GRCC Trades Replacement.Compl"ex _ East/West Street: SE 314th St North/South Street: 124th Ave SE i. Intersection- Orientation'::. NS'; Study period (hrs) •,0.,25 Vehicle Volumes: and Adjustments. Major Street: Approach-:- Northbound Southbound Movement 1 2 3 I 4 5 ,!'6 L T R I L T R Volume, 2 4`44 541 3 _y. Peak-Hour Factor, -PHF 0.85 0•.'85 0::'85 0_.-85 Hourly Flow Rate, HFR 2 522 636 ,:3e Percent Heavy"Vehicles `2 --t - 17 7 Median Type/Storage Undivided RT Channelized? Lanes 0 1 1 0 Configuration LT TR Upstream Signal? No Yes Minor Street: Approach'` Westbound Eastbound: Movement 7 81 9' 1 10 11 „ 12 L T R~ I _L T R Volume Peak Hour Factor, PHF 0.85 .0..85' Hourly Flow Rate, HFR 1a,b Percent Heavy Vehicles 0 _ 0 Percent Grade M 0 0 Flared Approach: Exists?/Storage s/.r :NO. -A Lanes 0 0 _ Configuration LR Delay, Queue Length,-`and-`Level of <:Service Approach NB SB We'stb`ound " ,:Eastbound Movement 1 4 17 8 9 I 10 11 12 Lane Config LT I I LR v (vph) 2 2 C(m) (vph) 910 283 v/c 0.00 0.01 , 95% queue length 0.01 0.'02., ,Control Delay 9.0 17.8 LOS A C Approach Delay 17•."8; Approach LOS C HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 6/7/2010 Analysis Time Period: PM Peak Intersection: #3-SE 316th St & 124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project Project ID: Trades Replacement Complex - GRCC East/West Street: SE 316th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 1 4 5 6 L T R I L T R Volume 8 352 1 65 379 74 Peak-Hour Factor, PHF 0.80 0.80 0.80 0.80 0.80 0.80 Hourly Flow Rate, HFR 9 439 1 81 473 92 Percent Heavy Vehicles 2 1 Median Type/Storage Undivided / RT Channelized? Lanes 1 1 0 1 1 0 Configuration L TR L TR Upstream Signal? Yes Yes Minor Street: Approach Westbound Eastbound Movement 7 8 9 1 10 11 12 L T R I L T R Volume 3 3 34 59 1 7 Peak Hour Factor, PHF 0.80 0.80 0.80 0.80 0.80 0.80 Hourly Flow Rate, HFR 3 3 42 73 1 8 Percent Heavy Vehicles 0 0 0 0 0 0 Percent Grade 0 0 Flared Approach: Exists?/Storage No / No / Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 7 8 9 1 10 11 12 Lane Config L L 1 LTR I LTR v (vph) 9 81 48 82 C(m) (vph) 984 1120 456 149 v/c 0.01 0.07 0.11 0.55 95% queue length 0.03 0.23 0.35 2.76 Control'Delay 8.7 8.5 13.8 55.3 LOS A A B F Approach Delay 13.8 55.3 Approach LOS B F HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 6/7/2010 Analysis Time Period: PM Peak Intersection: #4-SE 318th St & 124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project Project ID: Trades Replacement Complex - GRCC East/West Street: SE 318th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 4 5 6 L T R L T R Volume 404 38 57 333 Peak-Hour Factor, PHF 0.85 0.85 0.85 0.85 Hourly Flow Rate, HFR 475 44 67 391 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 0 1 2 Configuration TR L T Upstream Signal? Yes No Minor Street: Approach Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 22 33 Peak Hour Factor, PHF 0.85 0.85 Hourly Flow Rate, HFR 25 38 Percent Heavy Vehicles 0 0 Percent Grade M 0 0 Flared Approach: Exists?/Storage No Lanes 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config L I LR v (vph) 67 63 C(m) (vph) 1030 445 v/c 0.07 0.14 95% queue length 0.21 0.49 Control Delay 8.7 14.4 LOS A, B Approach Delay 14.4 Approach LOS B HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #7-SE 320th St/122nd Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: 122nd Ave SE Intersection Orientation: EW Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Eastbound Westbound Movement 1 2 3 1 4 5 6 L T R I L T R Volume 2 278 0 0 310 1 Peak-Hour Factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 2 302 0 0 336 1 Percent Heavy Vehicles 2 2 Median Type/Storage Undivided / RT Channelized? Lanes 0 1 0 0 1 0 Configuration LTR LTR Upstream Signal? No Yes Minor Street: Approach Northbound Southbound Movement 7 8 9 I 10 11 12 L T R L T R Volume 0 0 1 1 0 1 Peak Hour Factor, PHF 0.92 0.92 0.92 0.92 0.92 0.92 Hourly Flow Rate, HFR 0 0 1 1 0 1 Percent Heavy Vehicles 2 2 2 2 2 2 Percent Grade 0 0 Flared Approach: Exists?/Storage No / No / Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length, and Level of Service Approach EB WB Northbound Southbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config LTR LTR LTR I LTR v (vph) 2 0 1 2 C(m) (vph) 1222 1259 738 499 v/c 0.00 0.00 0.00 0.00 95% queue length 0.00 0.00 0.00 0.01 Control Delay 8.0 7.9 9.9 12.2 LOS A A A B Approach Delay 9.9 12.2 Approach LOS A B A HCS2000: Unsignalized Intersections.Reiease.4.lf-_ TWO-WAY STOP'CONTROL,_SUMMARY:. Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 ; Analysis Time Period: PM Peak Intersection: #8-SE 320th_St/GRCC,-West. Exit,. Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 Without Project` Project ID: GRCC Trades Replacement.Complex, East/West Street: SE 320th St North/South Street: GRCC West Exit , Intersection- O'rien.tati'onr EW. ° Study period (hrs),:. i-0.25 Vehicle, Volumes-,and Adjustment Major Street.: Approach Eastbound, Westbound.r Movement 1 2 3 I 4 5-a,:•, r;, 6 L T R I L; T R Volume 137` „ 311 Peak-Hour Factor, PHF - 0..9.2 0.:92 Hourly Flow Rate, HFR`- 148, 338 Percent Heavy Vehicles r , Median Type/Storage Undivided RT Channelized? Lanes 1 1 Configuration T T Upstream Signal? No Yes _ Minor Street: Approach Northbound Southbound Movement 7 8 9 10 ;11; 12 L T R L T R Volume 68 135 Peak Hour Factor, PHF 0.92 0.92 Hourly Flow Rate, HFR- 73 146 Percent Heavy Vehicles 2 2 Percent Grade 0 0 Flared Approach: Exists?/Storage Lanes 1 1 Configuration L R _ Delay, Queue.,Length, and, Level: of,,-; Service .c,,p Approach •EB WB Northbound ;'Southbound Movement 1 4 17 8 9 10 11 12, Lane Config I L R v (vph) 73 146 " C (m) (vph) 5407 " 899 J v/c 0 ,14 0:16";~ , 95% queue length' 0:47' 0:.58, Control Delay` 12.7 9.8 LOS B = A Approach Delay 10.8 - Approach LOS B HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #2-SE 314th St/124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 314th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments Major Street: Approach Northbound Southbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 2 451 547 3 Peak-Hour Factor, PHF 0.85 0.85 0.85 0.85 Hourly Flow Rate, HFR 2 530 643 3 Percent Heavy Vehicles 2 Median Type/Storage Undivided / RT Channelized? Lanes 0 1 1 0 Configuration LT TR Upstream Signal? No Yes Minor Street: Approach Westbound Eastbound Movement 7 8 9 10 11 12 L T R L T R Volume 1 1 Peak Hour Factor, PHF 0.85 0.85 Hourly Flow Rate, HFR 1 1 Percent Heavy Vehicles 0 0 Percent Grade M 0 0 Flared Approach: Exists?/Storage / No / Lanes 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 1 7 8 9 1 10 11 12 Lane Config LT 1 1 LR v (vph) 2 2 C(m) (vph) 904 278 v/c 0.00 0.01 95% queue length 0.01 0.02 Control Delay 9.0 18.0 LOS A C Approach Delay 18.0 Approach LOS C J ! HCS2000: Unsignalized -.Intersections.Releasel4:.l,f TWO-WAY"-STOP. CONTROL'.SUMMARY Analyst: Agency/Co.: TENW Date Performed: 6/7/2010 Analysis'Time Period: PM Peak Intersection: #3-SE 316th St.& 124th Ave,SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: Trades Replacement Complex -::GRCC East/West Street: SE 316th St North/South Street: 124th Ave SE Intersection Orientation: INS Study period ,,I(hrs) 0;.2.5: s Vehicle Volumes'-and -Adjustments Major Street: Approach Northbound Southbound. = Movement 1 2 3 4 5 c? 6 L T R L T R Volume 8 359 1 65 385 74 Peak-Hour Factor, PHF11- 0.80 0.80 :`0.80 0.80 0:180 0.,80 Hourly Flow Rate, HFR 9 448 1 81 481:,',-92: , Percent Heavy Vehicles 2- - T Median Type/Storage Undivided / RT Channelized? Lanes 1 1 0 1 1 0 Configuration L TR L TR Upstream Signal? Yes Yes Minor Street: Approach- Westbound Eastbound- Movement 7 8 9 10 '11., 12 L T R° L T ;R Volume 3" 3 34 59 1 -7 Peak Hour Factor, PHF 0.80 0.80 0.80 0.80 0.80 0:80? Hourly Flow Rate, HFR 3 3 42 73 1' 8,. Percent Heavy Vehicles 0 -0 0 0- 0-__ 0 Percent Grade M 0 0 Flared Approach` Exists?/Storage No fi. / .e.: No'.. Lanes 0 1 0 0 1, 0 Configuration LTR LTR _ -Delay, 'Queue Length,, and,, Level: of Service' Approach NB SBWestbound -Eastbound Movement 1 4 7 8 9 10 11 .12 Lane Config L L LTR LTR v (vph) 9 81 48 82 C(m) (vph) 975 1111 448 143 v/c 0.01 0.07 0.11 0.57 95% queue length 0.03 0.24 0.36 2.92 Control Delay 8.7 8.5 14.0 59.5 LOS A A B F Approach Delay 14.0 59.5 Approach LOS B F f HCS2000: Unsignalized Intersections Release 4.1f - .TWO-WAY STOP CONTROL' SUMMARY' . Analyst: Agency/Co.:' Date Performed: 05/02/2005 Analysis Time Period: 5:00 pm Intersection: SE 318th St & 12`4th'Ave'SE" Jurisdiction: - Units: U., S. Customary Analysis Year:" Project ID: East/West Street: North/South Street: Intersection Orientation': NS Study period, (hrs): 0_25 _.-..Vehicle"Volumes",arid Adjustment's Major Street: Approach Northbound Southbound=` Movement 1 2 3 I 4 5"- _ '6 L T R L T R Volume 9 394 38 57 319 20 Peak-Hour Factor, PHF 0.92 OA5 0.85 0.85 0:85 0..92 Hourly Flow Rate, HFR` 9 - 463" 44 67 37'521 Percent Heavy Vehicles 2 2 Median Type/Storage Undivided / RT Channelized? Lanes 1 1 0 1 2 0 Configuration L TR L T TR Upstream Signal? Yes No Minor Street: Approach Westbound = Eastbound: Movement 7 8 9 I 10 11-. 12 -L T R L T R Volume -22 0 33- 17 0 10 Peak Hour Factor, PHF 0.85 0,92 0.85 •0.92 0-.-'92 0. 92 Hourly Flow Rate, HFR 25 0 38' 18 0"- 10 Percent Heavy Vehicles '0 2 0 - 2 2: 2- Percent Grade (o) - 0 0 Flared Approach: Exists?/Storage No / - No. Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length;, and,'Level' of:- Service_ , Approach SB - Westbound =Eastbound movement 1 4 17 8 9 1 10 11 12 Lane Config L L 1 LTR I LTR v (vph) 9 67. 63 28 C(m) (vph) 1159 1041 423 257 v/c 0.01 0.06 0.15 0.11 95% queue length 0.02 0.21 0.52 0`.36 Control Delay- 8.1 8.7 15.0- 20.7, LOS A A B C Approach Delay- 15.0- 20_7 Approach LOS B C ' 1 a HCS2000: Unsignalized Intersections. Release 4.1f;.. TWO-WAY,STOP CONTROL SUMMARY Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak ; Intersection: #7-SE 320th St/122nd Ave SE Jurisdiction:. City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement Complex East/West Street: SE 320th St North/South Street: 122nd Ave SE Intersectior'.0•rientation.:.EW;, Study period.,(hrs).,-. 0.25 Vehicle•Volumes and,;Adjustments Major Street:. Approach,, Eastbound Westbound Movement 1 2 3 14 5 :6 L T R- I L T R Volume 2 282 0. 0 314 Peak-Hour Factor, PHF 0.92 ,0.,92 ,0.92 0.92 0:92 0.92 Hourly Flow Rate, HFR 2 306 0. 0 341 1. Percent Heavy-Vehicles 2 - 2 Median Type/Storage Undivided / RT Channelized? Lanes 0 1 0 0 1 0 Configuration LTR LTR Upstream Signal? No Yes Minor Street: Approach Northbound Souffibound Movement 7 8 9 10 1L,-s 12 L T R I L T. R Volume 0 0_. 1 i. 0..- 1w. Peak Hour Factor, PHF 0.92 -0.,92 0.92 0.92 0.92 ..0_92 Hourly Flow Rate, HFR 0 0 1 1 Oa. 1.. Percent Heavy Vehicles 2 2 2 2 2 2 Percent Grade (o) 0 0 Flared Approach: Exists?/Storage No / No Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay; Queue- Length,.;and-Level- of Service Approach EB WB Northbound Southbound Movement 1 4- I 7 8 9 I 10 11 12 7" 1 Lane Config LTR LTR I LTR LTR C(m) (vph) 1217 1255 734, 493 v/c 0.00 0:00 0.00 0.00 95% queue length. 0.00 0.00 0.00 0.01: Control Delay 8.0 7.9 9.9 12. LOS A A A B Approach Delay 9.9 12.3 Approach LOS A B r HCS2000: Unsignalized Intersections Release-'4:'.1f a TWO-WAY STOP CONTROL]- 'SUMMARY-Analyst: Agency/Co.: TENW Date Performed: 7/22/2010 Analysis Time Period: PM Peak Intersection: #8-SE 320th St/GRCC West Exit' Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement^Complex East/West Street: SE,320th St North/South Street: GRCC West Exit Intersection .Orientation:- EW Study period" (hrs) : =0'.25 Vehicle,Volumes,and;.Adjustments:" Major Street: Approach- Eastbound Westbound Movement T 2 3 I 4~5~"-"= L' T R I L' T R Volume 141' ? 315 Peak-Hour Factor, PHF 0.92 0,:92' Hourly Flow Rate, HFR:: r 153 342` Percent Heavy,Vehicles - Median Type/Storage Undivided RT Channelized? Lanes 1 1 Configuration T T Upstream Signal? No Yes roach , Northbound!'""' " Southbound Minor Street: APp_ Movement 7 8 9 10 .;12 L T R L, T R Volume 68 135 Peak Hour Factor, PHF 0.92 0.92 Hourly Flow Rate, HFR 73 146 Percent Heavy Vehicles 2 2 Percent Grade 0 0 Flared Approach: Exists?/Storage / Lanes 1 1 Configuration L R Delay, `.Queue "":Length, :and ,Level,_ of! Service Approach r,EB WB, ~:cYNorthbound 'Southbound, Movement 1 4 7 8 9 I 10 11 12 Lane Config I L R v (wph) 73 146'. a. C(m) (vph) 534 893: v/c 0.14 0.°16. 95% queue length 0.47 0-58 Control Delay 12.8 9.8 LOS B A Approach Delay 10.8 Approach LOS B J J 1 HCS2000: Unsignalized Intersections,Release-4.1f. TWO-WAY, STOP;,CONTROL,_SUMMARY,: 7 Analyst: Agency/Co.: TENW _ Date Performed: 7/22/2010 - Analysis Time Period: PM Peak Intersection: #9-SE 320th St/GRCC.West Entr' Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project Project ID: GRCC Trades Replacement.Complex- East/West Street: SE 320th St North/South Street: GRCC West Entrance Intersection Orientation: EW, Study period;.(hrs): 0.25 Vehicle,;Volumes;_and;,Adj,ustments Major Street: Approach Eastbound; Westbound :Movement 1 2 3 1 4 5 z =;,!6 L T R I L T R Volume 105 7,8 133 205 Peak-Hour Factor, PHF 0.92 0.92 0.92 0:92 Hourly Flow Rate, HFR' 114 84. 144 222' - Percent Heavy--Vehicles" 2 Median Type/Storage Undivided t RT Channelized? Lanes 1 0 1 1 _ Configuration TR L T_ Upstream Signal? No No Minor Street: Approach Northbound Southbound- .'Movement 7 8 9. TO 12 L T R L T R Volume r Peak Hour Factor, PHF; Hourly Flow Rate, HFR Percent-Heavy Vehicles Percent Grade 0 0 Flared Approach: .Exists?/Storage Lanes Configuration Delay;. ,Queue ;Length, --;and .L'eyel_Tof , Service, e•:: Approach ,..EB WB nNorthbound Southbound Movement 1 4 7 8 9~ 10 11 12 Lane Config 'L ; v (vph) 144 C(m) (vph) 13751- v/c 010 95% queue length 0 35. Control Delay 7.9, e LOS A Approach Delay Approach LOS HCS2000: Unsignalized Intersections Release 4.1f TWO-WAY STOP CONTROL SUMMARY Analyst: JGT Agency/Co.: TENW Date Performed: 12/22/2010 Analysis Time Period: AM Peak Intersection: #2-SE 314th St/124th Ave SE Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With Project with Improv. Project ID: GRCC Trades Replacement Complex East/West Street: SE 314th St North/South Street: 124th Ave SE Intersection Orientation: NS Study period (hrs): 0.25 Vehicle Volumes and Adjustments. Major Street: Approach Northbound Southbound Movement 1 2 3 1 4 5 6 L T R L T R Volume 1 382 983 2 Peak-Hour Factor, PHF 0.85 0.85 0.85 0.85 Hourly Flow Rate, HFR 1 449 1156 2 Percent Heavy Vehicles 2 Median Type/Storage TWLTL / 1 RT Channelized? Lanes 0 1 2 0 Configuration LT T TR Upstream Signal? No Yes Minor Street: Approach Westbound Eastbound Movement 7 8 9 1 10 11 12 L T R I L T R Volume 5 3 Peak Hour Factor, PHF 0.85 0.85 Hourly Flow Rate, HFR 5 3 Percent Heavy Vehicles 0 0 Percent Grade (o) 0 0 Flared Approach: Exists?/Storage / No / Lanes 0 0 Configuration LR Delay, Queue Length, and Level of Service Approach NB SB Westbound Eastbound Movement 1 4 1 7 8 9 10 11 12 Lane Config LT I LR v (vph) 1 8 C(m) (vph) 743 309 v/c 0.00 0.03 95% queue length 0.00 0.08 Control Delay 9.9 17.0 LOS A C Approach Delay 17.0 Approach LOS C HCS2000: Unsignalized Intersections.Release:4:lf TWO-WAY 'STOP ,CONTROL. SUMMARY Analyst: JGT Agency/Co.: TENW Date Performed: 12/21/2010 _ Analysis Time Period: AM Peak Intersection: #3-SE 316th St.:;&;;124thy Ave SE. T 0 Jurisdiction: City of Auburn Units: U. S. Customary Analysis Year: 2015 With -~Projectvbwith~Improv.,.% Project ID: Trades Replacement Complex;",-:GRCC „ East/West Street: SE 316th St North/South Street: 124th Ave SE Intersection.Orientation:=NS Study period,.(hrs) 0.25 Vehicle Volumes,,.and,-AdjustmentsL,,--,•;,,., Major Street: Approach.. _ Northbound Southbound.t 'Movement 1 2 3 4 5 6 L T R L T R Volume 255 1 24 914 36 Peak-Hour Factor, PHF 0.83 0.83 0.83 ,,0:83 Hourly Flow Rate, HFR, 307 1 28 1101 :..43_ Percent Heavy Vehicles 1 Median Type/Storage 'TWLTL /„4 RT Channelized? Lanes _ 1 0 1 2, 0 Configuration TR L T TR Upstream Signal? Yes Yes Minor Street: Approach-._- Westbound' Eastbound- :Movement '7 8 9 10 ;11-- 1 =.12 L T R I L T R Volume 2 0 66 63 2 4 Peak Hour Factor, PHF 0.83 0.83 0.83 0.83 0.8.3 ;;;:0..83• Hourly Flow Rate, HFR 2 0 79 75 2• Percent Heavy Vehicles 6 6 6" 3 3= -3 _ Percent Grade 0 0 Flared Approach:. Exists?/Storage No No:; Lanes 0 1 0 0 1 0 Configuration LTR LTR Delay, Queue Length,; and, Level: o"f,.,Service--.- Approach BNB SB :~Westbound =Eastbound Movement 1 4 7 8 9 10 11 Lane Config L LTR LTR v (vph) 28 81 81 C(m) (vph) 1257 682 239 v/c 0.02 0.12 0.34 95% queue length 0.07 0.40 Control Delay 7.9 11.0 27.6 LOS A B D Approach Delay 11.0 27.6.;.;. Approach LOS B D HCM Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE # 7/26/2010 futovement EBL EBT EBR WBL WBT WBR NBL NBT NBR 5BL SBT SBR Lane Configurations t r r r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.93 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0.95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 1736 1695 1770 1863 1583 1752 1845 1568 1770 1863 1583 Flt Permitted. 0.95 1.00 0.95 1.00 1.00 0.11 1.00 1.00 0.59 1.00 1.00 Satd. Flow (perm) 1736 1695 1770 1863 1583 207 1845 1568 1107 1863 1583 Volume (vph) 97 129 120 471 187 46 73 150 133 43 319 92 Peak-hour factor, PHF 0.82 0.82 0.82 0.84 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 118 157 146 561 223 55 82 169 149 57 420 121 RTOR Reduction (vph) 0 17 0 0 0 23 0 0 106 0 0 17 Lane Group Flow (vph) 118 286 0 561 223 32 82 169 43 57 420 104 Heavy Vehicles 4% 4% 4% 2% 2% 2% 3% 3% 30/6 2% 2% 2% Turn Type Prot Prot Perm pm+pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 4 8 8 Actuated Green, G (s) 16.3 35.3 55.3 74.3. 74.3 58.4 46.6 46.6 49.6 422 42.2 Effective Green, g (s) 17.3 36.3 56.3 75.3 75.3 60.0 47.6 47.6 51.6 43.2 43.2 Actuated g/C Ratio 0.11 0.22 0.34 0.46 0.46 0.36 0.29 0.29 0.31 0.26 0.26 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 182 374 605 852 724 196 534 453 381 489 415 v/s Ratio Prot 0.07 c0.17 c0.32 0.12 c0.03 0.09 0.01 c0.23 v/s Ratio Perm 0.02 0.12 0.03 0.04 0.07 v/c Ratio 0.65 0.76 0.93 0.26 0.04 0.42 0.32 0.10 0.15 0.86 0.25 Uniform Delay, d1 70.7 60.1 52.2 27.5 24.7 39.4 45.8 42.8 40.1 57.8 47.9 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 7.7 13.8 20.4 0.7 0.1 1.4 0.3 0.1 0.2 14.0 0.3 Delay (s) 78.4 73.9 72.6 28.3 24.8 40.8 46.1 42.9 40.3 71.8 48.2 Level of Service E E E C C D D D D E D Approach Delay (s) 75.2 57.7 43.8 64.0 Approach LOS E E D E Intersection Summary ~ HCM Average Control Delay 60.2 HCM Level of Service E HCM Volume to Capacity ratio 0.82 Actuated Cycle Length (s) 164.6 Sum of lost time (s) 16.0 Intersection Capacity Utilization 74.5% ICU Level of Service D Analysis Period (min) 15 c Critical Lane Group 2009 Existing AM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 HCM Signalized Intersection Capacity Analysis 5: "SE 320th St" & "124th Ave SE" 7/26/2010 Movement __W__._. EBL EBT WBT WBR SBL SBR ~ Lane Configurations t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Fit Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1703 1792 1881 1599 1770 1583 Flt Permitted 0.64 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 1143 1792 1881 1599 1770 1583 Volume (vph) 162 139 12 48, 493 386 Peak-hour factor, PHF 0.82 0.82 0.82 0.82 0.82 0.82 Adj. Flow (vph) 198 170 15 59 601 471 RTOR Reduction (vph) 0 0 0 23 0 279 Lane Group Flow (vph) 198 170 15 36 601 192 Heavy Vehicles 6% 6% 1% 1% 2% 2% Turn Type pm+pt pm+ov pm+ov Protected Phases 5 2 6 8 8 5 Permitted Phases 2 6 8 Actuated Green, G (s) 31.3 31.3 22.2 51.5 29.3 34.4 Effective Green, g (s) 32.3 32.3 23.2 53.5 30.3 35.4 Actuated g/C Ratio 0.37 0.37 0.27 0.62 0.35 0.41 Clearance Time (s) 4.0 5.0 5.0 5.0 5.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 458 667 503 1059 618 646 v/s Ratio Prot c0.03 0.09 0.01 0.01 c0.34 0.02 v/s Ratio Perm c0.14 . 0.01 0.10 v/c Ratio 0.43 0.25 0.03 0.03 0.97 0.30 Uniform Delay, d1 20.4 18.9 23.5 6.5 27.8 17.3 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 ,Incremental Delay, d2 0.7 0.2 0.1 0.0 29.2 0.3 Delay (s) 21.0 19.1 23.6 6.5 57.0 17.6 Level of Service C B C A E B Approach Delay (s) 20.1 10.0 39.7 Approach LOS _ C A D ;intersection Summary HCM Average Control Delay 33.5 HCM Level of Service C HCM Volume to Capacity ratio 0.69 Actuated Cycle Length (s) 86.8 Sum of lost time (s) 24.2 Intersection Capacity Utilization 49.6% ICU Level of Service A Analysis Period (min) 15 c Critical Lane Group 2009 Existing AM Peak Synchro 6 Report Transportation Engineering Northwest Page 2 HCM Signalized Intersection Capacity Analysis 6: 132nd Ave SE & SE 304th St 7/26/2010 a :Movement EBL EBT WBT WBR SBL SBR Lane Configurations ~S + Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Fri: 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1770 1863 1845 1568 1736 1553 Flt Permitted 0.18 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 332 1863 1845 1568 1736 1553 Volume (vph) 62 203 504 295 371 112 Peak-hour factor, PHF 0.91 0.91 0.87 0.87 0.91 0.91 Adj. Flow (vph) 68 223 579 339 408 123 RTOR Reduction (vph) 0 0 0 205 0 84 Lane Group Flow (yph) 68 223 579 134 408 39 Heavy Vehicles 2% 2%° 3% 3%° 4% 4% Turn Type pm+pt Perm Perm Protected Phases 7 4 8 6 Permitted Phases 4 8 6 Actuated Green, G (s) 25.1 25.1 19.2 19.2 15.5 15.5 Effective Green, g (s) 25.1 25.1 19.2 19.2 15.5 15.5 Actuated g/C Ratio 0.52 0.52 0.40 0.40 0.32 0.32 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 228 962 729 619 554 495 v/s Ratio Prot 0.01 c0.12 c0.31 c0.24 v/s Ratio Perm 0.14 0.09 0.03 v/c Ratio 0.30 0.23 0.79 0.22 0.74 0.08 Uniform Delay, d1 8.1 6.5 13.0 9.7 14.7 11.6 Progression Factor 1.00 1.00 .1.00 1.00 1.00 1.00 Incremental Delay, d2 0.7 0.1 6.0 0.2 5.1 0.1 Delay (s) 8.8 6.6 18.9 9.9 19.8 11.6 Level of Service A A B A B B Approach Delay (s) 7.1 15.6 17.9 Approach LOS A B B lFntersection Summary HCM Average Control Delay 14.9 HCM Level of Service B HCM Volume to Capacity ratio 0.75 Actuated Cycle Length (s) 48.6 Sum of lost time (s) 12.0 Intersection Capacity Utilization 60.50/6 ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2009 Existing AM Peak Synchro 6 Report Transportation Engineering Northwest Page 3 HCM Signalized Intersection Capacity Analysis 10: 105th PI SE & Lea Hill Rd SE 7/26/2010 Movement WBL WBR NBT IVBR SBL SBT i Lane Configurations Y Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 Frt 1.00 0.94 1.00 Fit Protected 0.95 1.00 1.00 Satd. Flow (prot) 1786 1709 1844 Fit Permitted 0.95 1.00 0.99 Satd. Flow (perm) 1786 1709 1831 Volume (vph) 201 7 373 261 5 439 . Peak-hour factor, PHF 0.79 0.79 0.85 0.85 0.87 0.87 Adj. Flow (vph) 254 9 439 307 6 505 RTOR Reduction (vph) 4 0 46 0 0 0 Lane Group Flow (vph) 259 0 700 0 0 511 Heavy Vehicles 1 % 1% 5% 5% 3% 3% Turn Type Perm Protected Phases 8 2 6 Permitted Phases 6 Actuated Green, G (s) 9.8 22.4 22.4 Effective Green, g (s) 9.8 22.4 22.4 . Actuated g/C Ratio 0.24 0.56 0.56 Clearance Time (s) 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 Lane Grp Cap (vph) 435 952 1020 v/s Ratio Prot c0.15 c0.41 v/s Ratio Perm 0.28 v/c Ratio 0.60 0.73 0.50 Uniform Delay, d1 13.4 6.7 5.5 Progression Factor 1.00 1.00 1.00 Incremental Delay, d2 2.2 3.0 0.4 Delay (s) 15.6 9.6 5.9 Level of Service B A A Approach Delay (s) 15.6 9.6 5.9 Approach LOS B A A ___V____.._._ {ntersec-_iori Summary HCM Average Control Delay 9.4 HCM Level of Service A HCM Volume to Capacity ratio 0.69 Actuated Cycle Length (s) 40.2 Sum of lost time (s) 8.0 ° Intersection Capacity Utilization 53.8 ICU Level of Service A Analysis Period (min) 15 c Critical Lane Group 2009 Existing AM Peak Synchro 6 Report Transportation Engineering Northwest Page 4 HCM Signalized Intersection Capacity Analysis 11: SE 320th St & 104th Ave SE 7/26/2010 _ Movement" EBL EBT EBR WBL WBT WBR' NBL NBT NBR SBL SBT_. SBR Lane Configurations 41, Ideal Flow (vphpl) 1900 1900 1900. 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 0.99 0.97 0.88 Flt Protected 0.95 1.00 1.00 0.98 1.00 Satd. Flow (prot) 1752 1844 1794 1791 1594 Flt Permitted 0.27 1.00 1.00 0.78 0.98 Satd. Flow (perm) 490 1844 1792 1426 1561 Volume (Vph) 177 625 2 2 644 45 2 1 1 . 20 0 229 Peak-hour factor, PHF 0.93 0.93 0.93 0.91 0.91 0.91 0.33 0.33 0.33 0.77 0.77 0.77 Adj. Flow (vph) 190 672 2 2 708 49 6 3 3 26 0 297 RTOR Reduction (vph) 0 0 0 0 4 0 0 2 0 0 217 0 Lane Group Flow (vph) 190 674 0 0 755 .0 0 10 0 0 106 0 Heavy Vehicles 3% 3% 3% 5% 5% 5% 0% 0% 0% 4% 4% 4% Turn Type pm+pt Perm Perm Perm Protected Phases 7 4 8 2 6 Permitted Phases .4 8 2 6 . Actuated Green, G (s) 31.1 31.1 24.2 8.9 8.9 Effective Green, g (s) 31.1 31.1 24.2 8.9 8.9 Actuated g/C Ratio 0.65 0.65 0.50 0.19 0.19 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 394 1195 903 264 289 v/s Ratio Prot 0.03 c0.37 v/s Ratio Perm 0.28 c0.42 0.01 c0.07 v/c Ratio 0.48 0.56 0.84 0.04 0.37 Uniform Delay, d1 5.8 4.7 10.2 16.0 17.1 Progression Factor 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.9 0.6 .6.8 0.1 0.8 Delay (s) 6.7 5.3 17.0 16.1 17.9 Level of Service A A B B B Approach Delay (s) 5.6 17.0 16.1 17.9 Approach LOS A B B B. 71 mmary t Tntersectiori HCM Average Control Delay 12.1 HCM Level of Service B HCM Volume to Capacity ratio 0.72 Actuated Cycle Length (s) 48.0 Sum of lost time (s) 12.0 Intersection Capacity Utilization 95.1% ICU Level of Service F Analysis Period (min) 15 c Critical Lane Group 2009 Existing AM Peak Synchro 6 Report Transportation Engineering Northwest Page 5 HCNA Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE 7/26/2010 _J* Nt 4.\ t Movement EBL EBT EBR " WBL WBT " WBR NBL NBT NBR SBL SBT SBR Lane Configurations T* t r t r t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 .1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.95 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0.95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 1736 1739 1770 1863 1583 1752 1845 1568 1770 1863 1583 Flt Permitted 0.95 1.00 0.95 1.00 1.00 0.35 1.00 1.00 0.42 1.00 1.00 Satd. Flow (perm) 1736 1739 1770 1863 1583 637 1845 1568 789 1863 1583 Volume (vph) 122 200 95 241 177 51 54 161 246 64 177 85 Peak-hour factor, PHF 0.82 0.82 0.82 0.84 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 149 244 116 287 211 61 61 181 276 84 233 112 RTOR Reduction (vph) 0 7 0 0 0 27 0 0 228 0 0 32 Lane Group Flow (vph) 149 353 0 287 211 34 61 181 48 84 233 80 Heavy Vehicles 4% 4% 4% 2% 20/6 2% 3% 30/6 3% 20/6 2% 20/6 Turn Type Prot Prot Perm pm±pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 .4 8 8 Actuated Green, G (s) 14.1 39.0 21.7 46.6 46.6 24.1 17.4 17.4 25.7 18.2 18.2 Effective Green, g (s) 15.1 40.0 22.7 47.6 47.6 26.1 18.4 18.4 27.7 19.2 19.2 Actuated g/C Ratio 0.14 0.38 0.21 0.45 0.45 0.25 0.17 0.17 0.26 0.18 0.18 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 248 659 380 840 714 239 321 273 286 339 288 v/s Ratio Prot 0.09 c0.20 c0.16 0.11 0.02 0.10 c0.02 c0.13 v/s Ratio Perm 0.02 0.04 0:03 0.05 0.05 v/c Ratio 0.60 0.54 0.76 0.25 0.05 0.26 0.56 0.18 0.29 0.69 0.28 Uniform Delay, d1 42.4 25.6 38.8 18.0 16.3 . 31.3 39.9 37.1. 30.4 40.4 37.2 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 4.1 3.1 8.3 0.7 0.1 0.6 2.3 0.3 0.6 5.7 0.5 Delay (s) 46.5 28.7 47.1 18.7 16.4 31.9 42.2 37.5 31.0 46.1 37.8 Level of Service D C D B B C D D C D D Approach Delay (s) 33.9 33.0 38.5 41.0 Approach LOS C C D D ;(ntersection Summary - - _ . HCM Average Control Delay 36.3 HCM Level of Service D HCM Volume to Capacity ratio 0.58 Actuated Cycle Length (s) 105.6 Sum of lost time (s) 12.0 Intersection Capacity Utilization 56.5% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2009 Existing PM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 HCM Signalized Intersection Capacity Analysis n 5: "SE 320th St" & "124th Ave SE" 7/26/2010 Movement EBL EBT WBT.. WBR_ SBL SBR Lane Configurations t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1752 1845 1900 1615 1787 1599 Flt Permitted 0.61 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 1120 1845 1900 1615 1787 1599 Volume (vph) 228 36 61 188 111 232 Peak-hour factor, PHF 0.89 0.89 0.89 0.89 0.89 0.89 Adj. Flow (vph) 256 40 69, 211 125.. 261 RTOR Reduction (vph) 0 0 0 109 0 202 Lane Group Flow (vph) 256 40 .69 102 125 59 Heavy Vehicles 3% 3% 0% 0% 1% 1% Turn Type pm+pt pm+ov. pm+ov Protected Phases 5 2 6 8 8 5 Permitted Phases 2 6 8 Actuated Green, G (s) 31.1 31.1 22.1 32.3 10.2 15.2 Effective Green, 0 (s) 32.1 32.1 23.1 34.3 11.2 16.2 Actuated g/C Ratio 0.45 0.45 0.32 0.48 0.16 0.23 Clearance Time (s) 4.0 5.0 5.0 5.0 570 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 549 831 616 868 281 363 v/s Ratio Prot c0.03 0.02 0.04 0.02 c0.07 0.01 v/s Ratio Perm c0.18 0:04 0.03 v/c Ratio 0.47 0.05 0.11 0.12 0.44 0.16 Uniform Delay, d1 13.5 11.0 16.0 10.2 27.2 22.1 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.6 0.0 0.4 0.1 1.1 0.2 Delay (s) 14.1 11.0 17.3 10.2 28.4 22.3 Level of Service B B B B. C C Approach Delay (s) 13.7 12.0 24.3 Approach LOS B B C _ tritersectionSummary_...__..._...__.___._...__ HCM Average Control Delay 17.4 HCM Level of Service B. HCM Volume to Capacity ratio 0.46 Actuated Cycle Length (s) 71.3 Sum of lost time (s) 28.0 Intersection Capacity Utilization 32.1% ICU Level of Service A Analysis Period (min) 15 c Critical Lane Group 2009 Existing PM Peak Synchro 6 Report Transportation Engineering Northwest Page 2 HCM Signalized Intersection Capacity Analysis 6: 132nd Ave SE & SE 304th St 7/26/2010 Movemenf T EBL EBT ° WBT WBR SBL" SBR . Lane Configurations t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1787 1881 1881 1599 1770 1583 Fit Permitted 0.29 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 542 1881 1881 1599 1770 1583 Volume (vph) 114 348 368 411 360 135 Peak-hour factor, PHF 0.90 0.90 0.95 0.95 0.94 0.94 Adj. Flow (vph) 127 387 387 433 383 144 RTOR Reduction (vph) 0 0 0 297 0 97 Lane Group Flow (vph) 127 387 387 136 383. 47 Heavy Vehicles 1 % 1 % 1 % 1 % 2% 2% Turn Type pm+pt Perm Perm Protected Phases 7 4 8 6 Permitted Phases 4 8 6 Actuated Green, G (s) 19.9 19.9 13.0 13.0 13.6 13.6 Effective Green, g (s) 19.9 19.9 13.0 13.0 13.6 13.6 Actuated g/C Ratio 0.48 0.48 0.31 0.31 0.33 0.33 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 347 902 589 501 580 519 v/s Ratio Prot 0.03 c0.21 c0.21 c0.22 v/s Ratio Perm 0.15 0.08 0.03 v/c Ratio 0.37 0.43 0.66 0.27 0.66 0.09 Uniform Delay, d1 6.9 7.1 12.3 10.7 12.0 9.7 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.7 0.3 2.6 0.3 2.8 0.1 Delay (s) 7.5 7.4 15.0 11.0 14.8 9.7 Level of Service A A B B B A Approach Delay (s) 7.4 12.9 13.4 Approach LOS A B B n"~fer'sectiori 5uminaryr ~ r. F r HCM Average Control Delay 11.5 HCM Level of Service B HCM Volume to Capacity ratio 0.66 Actuated Cycle Length (s) 41.5 Sum of lost time (s) 12.0 Intersection Capacity Utilization 55.6% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2009 Existing PM Peak Synchro 6 Report Transportation Engineering Northwest Page 3 HCM Signalized Intersection Capacity Analysis : 10: 105th PI SE & Lea Hill Rd SE I 7/26/2010 t / # RN._. ___...._.__.._B..T ;Movement WBL WB NBR 8BL SB7 Lane Configurations Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 Frt 1.00 0.96 1.00 Flt Protected 0.95 1.00 1.00 Satd. Flow (prot) 1791 1798 1843 Fit Permitted 0.95 1.00 0.99 Said. Flow (perm) 1791 1798 1820 Volume (vph) 273 2 651 315 6 393 Peak-hour factor, PHF 0.88 0.88 0.94 0.94 0.92 0.92 Adj. Flow (vph) 310 2 693 335 7 427 RTOR Reduction (vph) 0 0 27 0 0 0 Lane Group Flow (vph) 312 0 1001 0 0 434 Heavy Vehicles 16/6 1% 1% 1% 3% 3% Turn Type Perm Protected Phases 8 2 6 Permitted Phases 6 Actuated Green, G (s) 13.8 37.8 37.8 Effective Green, g (s) 13.8 37.8 37.8 Actuated g/C Ratio 0.23 0.63 0.63 Clearance Time (s) 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 Lane Grp Cap (vph) 4115, 1140 1154 v/s Ratio Prot c0.17 c0.56 v/s Ratio Perm 0.24 v/c Ratio 0.75 0.88 0.38 Uniform Delay, d1 21.3 9.0 5.2 Progression Factor 1.00 1.00 1.00 Incremental Delay, d2 7.5 7.9 0.2 Delay (s) 28.8 16.9 5.4 Level of Service. C B A Approach Delay (s) 28.8 16.9 5.4 Approach LOS C B A 3lnterseciion Summary - 1 HCM Average Control Delay 16.2 HCM Level of Service B HCM Volume to Capacity ratio 0.84 Actuated Cycle Length (s) 59.6 Sum of lost time (s) 8.0 Intersection Capacity Utilization 75.4% ICU Level of Service D Analysis Period (min) 15 c Critical Lane Group 2009 Existing PM Peak Synchro 6 Report Transportation Engineering Northwest Page 4 H'CM Signalized Intersection Capacity Analysis 11: SE 320th St & 104th Ave SE 7/26/2010 N* 4.\ t 1 Movement EBL EBT EBR WBL WBT 1NBR NBL NBT NBR SBL SBT SBf Lane Configurations 1 4;+ 4 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 0.99 1.00 0.88 Flt Protected 0.95 1.00 1.00 1.00 0.99 Satd. Flow (prot) 1787 1880 1871 1900 1648 Flt Permitted 0.14 1.00 1.00 1.00 0.96 Satd. Flow (perm) 273 1880 1871 1900 1592 Volume (vph) 272 887 4 0 608 26 0 1 0 52 0 377 Peak-hour factor, PHF 0.99 0.99 0.99 0.98 0.98 0.98 0.25 0.25 0.25 0.79 0.79 0.79 Adj. Flow (vph) 275 896, 4 0 620 27 0 4 0 66 0 477 RTOR Reduction (vph) 0 0 0 0 2 0 0 0 0 0 305 0 Lane Group Flow (vph) 275 900 0 0 645 0 0 4 0 0 238 0 Heavy Vehicles 1% 1% 1% 1% 1% 1% 0%° 0% 0% 1% 1% 1% Turn Type pm+pt Perm Perm Perm Protected Phases 7 4 8 2 6 Permitted Phases 4 8 2 6 Actuated Green, G (s) 37.3 37.3 23.6 12.7 12.7 Effective Green, g (s) 37.3 37.3 23.6 12.7 12.7 Actuated g/C Ratio 0.64 0.64 0.41 0.22 0.22 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 429 1209 761 416 349 v/s Ratio Prot 0.11 c0.48 c0.34 0.00 v/s Ratio Perm 0.31 c0.15 v/c Ratio 0.64 0.74 0.85 0.01 0.68 Uniform Delay, d1 9.1 7.1 15.6 17.7 20.8 Progression Factor 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 3.3 2.5 8.7 0.0 5.4 Delay (s) 12.3 9.6 24.2 17.7 26.2 Level of Service B A C B C Approach Delay (s) 10.2 24.2 17.7 26.2 Approach LOS B C B C Intersection Summary - ' HCM Average Control Delay 17.7 HCM Level of Service B HCM Volume to Capacity ratio 0.80 Actuated Cycle Length (s) 58.0 Sum of lost time (s) 12.0 Intersection Capacity Utilization 123.3%° ICU Level of Service H Analysis Period (min) 15 c Critical Lane Group 2009 Existing PM Peak Synchro 6 Report Transportation Engineering Northwest Page 5 H'CM Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE 12/16/2010 t I' fW&ement- EBL - EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBft Lane Configurations 1~ t r t r t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.93 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0.95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 1736 1695 1770 1863 1583 1752 1845 1568 1770 1863 1583 Flt Permitted 0.95 1.00 0.95 1.00 1.00 0.08 1.00 1.00 0.53 1.00 1.00 Satd. Flow (perm) 1736 1695 1770 1863 1583 153 1845 1568 991 1863 1583 Volume (vph) 103 137 127 500 199 49 77 159 141 46 339 98 Peak-hour factor, PHF 0.82 0.82 0.82 0.84 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 126 167 155 595 237 58 87 179 158 61 446 129 RTOR Reduction (vph) 0 17 0 0 0 26 0 0 114 0 0 17 Lane Group Flow (vph) 126 305 0 595 237 32 87 179 44 61 446 112 Heavy Vehicles 4% 4% 4% 2% 2% 2% 3% 3% 3% 2% 2% 2% Turn Type Prot Prot Perm pm+pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 4 8 8 Actuated Green, G (s) 17.5 45.2 63.0 90.7 90.7 55.2 49.2 49.2 51.0 47.1 47.1 Effective Green, g (s) 18.5 46.2 64.0 91.7 91.7 57.2 50.2 50.2 53.0 48.1 48.1 Actuated g/C Ratio 0.10 0.25 0.35 0.51 0.51 0.32 0.28 0.28 0.29 0.27 0.27 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 177 432 625 942 801 110 511 434 311 494 420 v/s Ratio Prot 0.07 c0.18 c0.34 0.13 c0.03 0.10 0.01 c0.24 v/s Ratio Perm 0.02 0.22 0.03 0.05 0.07 v/c Ratio 0.71 0.71 0.95 0.25 0.04 0.79 0.35 0.10 0.20 0.90 0.27 Uniform Delay, d1 78.8 61.4 57.2 25.4 22.6 50.1 52.5 48.8 47.2 64.3 52.7 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 12.7 9.3 24.6 0.6 0.1 31.0 0.4 0.1 0.3 19.6 0.3 Delay (s) 91.5 70.7 81.7 26.0 22.7 81.1 52.9 48.9 47.5 84.0 53.0 Level of Service F E F C C F D D D F D Approach Delay (s) 76.6 63.0 57.2 74.2 Approach LOS E E E E HCM Average Control Delay 67.5 HCM Level of Service E HCM Volume to Capacity ratio 0.88 Actuated Cycle Length (s) 181.3 Sum of lost time (s) 20.0 Intersection Capacity Utilization 78.1% ICU Level of Service D Analysis Period (min) 15 c Critical Lane Group 2015 Without Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 HCM Signalized Intersection Capacity Analysis h 5: "SE 320th St" & "124th Ave SE" 12/16/2010 Movement EBL EBT 'WBT WBR SIK SBR Lane Configurations t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1703 1792 1881 1599 1770 1583 Flt Permitted 0.64 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 1144 1792 1881 1599 1770 1583 Volume (vph) 172 139 12 48 493 410 Peak-hour factor, PHF 0.82 0.82 0.82 0.82 0.82 0.82 Adj. Flow (vph) 210 1.70 15 59 601 500 RTOR Reduction (vph) 0 0 0 24 0 314 Lane Group Flow (vph) 210 170 15 35 601 186 Heavy Vehicles 6% 6% 1 % 1%_ 2% 2% Turn Type pm+pt pm+ov pm+ov Protected Phases 5 2 6 8 8 5 Permitted Phases 2 6 8 Actuated Green, G (s) 31.4 31.4 22.3 46.6 24.3 29.4 Effective Green, g (s) 32.4 32.4 23.3 48.6 25.3 30.4 Actuated g/C Ratio 0.40 0.40 0.28 0.59 0.31 0.37 Clearance Time (s) 4.0 5.0 5.0 5.0 5.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 487 709 535 1027 547 588 v/s Ratio Prot c0.03 0.09 0.01 0.01 c0.34 0.02 v/s Ratio Perm c0.14 0.01 0.10 v/c Ratio 0.43 0.24 0.03 0.03 1.10 0.32 Uniform Delay, d1 18.0 16.5 21.1 6.9 28.3 18.3 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.6 0.2 0.1 0.0 68.3 0.3 Delay (s) 18.6 16.7 21.2 6.9 96.6 18.7 Level of Service B B C A F B Approach Delay (s) 17.8 9.8 61.2 Approach LOS B A E 'Fntersectiori HCM Average Control Delay 48.1 HCM Level of Service D HCM Volume to Capacity ratio 0.72 Actuated Cycle Length (s) 81.9 Sum of lost time (s) 24.2 Intersection Capacity Utilization 50.2% ICU Level of Service A Analysis Period (min) 15 c Critical Lane Group 2015 Without Project-AM Peak Synchro 6 Report Transportation Engineering Northwest Page 2 o t ' HCM Signalized Intersection Capacity Analysis 6: 132nd Ave SE & SE 304th St 12/16/2010 - =z Movement EBL EBT WBT WBR SBL SBR. Lane Configurations t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Fri 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1770 1863 1845 1568 1736 1553 Flt Permitted 0.17 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 312 1863 1845 1568 1736 1553 Volume (vph) 66 215 535 313 394 119 Peak-hour factor, PHF 0.91 0.91 0.87 0.87 0.91 0.91 Adj. Flow (vph) 73 236 615 360 433 131 RTOR Reduction (vph) 0 0 0 217 0 89 Lane Group Flow (vph) 73 236 615 143 433 42 Heavy Vehicles 2% 2% 3% 3% 4% 4% Turn Type pm+pt Perm Perm Protected Phases 7 4 8 6 Permitted Phases 4 8 6 Actuated Green, G (s) 25.9 25.9 19.9 19.9 16.1 16.1 Effective Green, g (s) 25.9 25.9 19.9 19.9 16.1 16.1 Actuated g/C Ratio 0.52 0.52 0.40 0.40 0.32 0.32 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 220 965 734 624 559 500 v/s Ratio Prot 0.01 c0.13 c0.33 c0.25 v/s Ratio Perm 0.16 0.09 0.03 v/c Ratio 0.33 0.24 0.84 0.23 0.77 0.08 Uniform Delay, d1 0 6.7 13.6 10.0 15.3 11.8 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 incremental Delay, d2 0.9 0.1 8.3 0.2 6.6 0.1 " Delay (s) 9.6 6.8 21.9 10.2 21.9 11.9 Level of Service A A C B C B 19.6 Approach Delay (s) 7.4 1T.6 Approach LOS A B B n~e~sectiori Summary. - _ . , HCM Average Control Delay 16.5 HCM Level of Service B HCM Volume to Capacity ratio 0.79 Actuated Cycle Length (s) 50.0 Sum of lost time (s) 12.0 Intersection Capacity Utilization 63.6% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 Without Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 3 HCM Signalized Intersection Capacity Analysis 4 t 10: 105th PI SE & Lea Hill Rd SE 12/16/2010 t Movement WBL WBR NBT -NBR SBL SBT ' Lane Configurations Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 Frt 1.00 0.94 1.00 Flt Protected 0.95 1.00 1.00 Satd. Flow (prot) 1787 1709 1844 Flt Permitted 0.95 1.00 0.99 Satd. Flow (perm) 1787 1709 1831 Volume (vph) 213 7 396 277 5 466 Peak-hour factor, PHF 0.79 0.79 0.85 0.85 0.87 0.87 Adj. Flow (vph) 270 9 466 326 6 536 RTOR Reduction (vph) 4 0 48 0 0 0 Lane Group Flow (vph) 275 0 744 0 0 542 Heavy Vehicles 1% 1% 5% 5% 3% 3% Turn Type Perm Protected Phases 8 2 6 Permitted Phases 6 Actuated Green, G (s) 9.8 21.5 21.5 Effective Green, g (s) 9.8 21.5 21.5 Actuated g/C Ratio 0.25 0.55 0.55 Clearance Time (s) 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 Lane Grp Cap (vph) 446 935 1002 v/s Ratio Prot c0.15 c0.44 Ws Ratio Perm 0.30 v/c Ratio 0.62 0.80 0.54 Uniform Delay, d1 13.1 7.1 5.7 Progression Factor 1.00 1.00 1.00 Incremental Delay, d2 2.5 4.8 0.6 Delay (s) 15.6 11.9 6.3 Level of Service B B A Approach Delay (s) 15.6 11.9 6.3 Approach LOS B B A Ipritersection HCM Average Control Delay 10.7 HCM Level of Service B HCM Volume to Capacity ratio 0.74 Actuated Cycle Length (s) 39.3 Sum of lost time (s) 8.0 Intersection Capacity Utilization 56.66/6 ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 Without Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 4 o , ' HiCM Signalized Intersection Capacity Analysis 11: SE 320th St & 104th Ave SE 112/16/2010 4 # Movement EBL EBT EBR WBU . WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900_ 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00. 1.00 1.00 1.00 1.00 Frt 1.00 1.00 0.99 0.97 0.88 Flt Protected 0.95 1.00 1.00 0.98 1.00 Satd. Flow (prot) 1752 1.844 17.93 1791 1593 Flt Permitted 0.25 1.00 1.00 0.76 0.98 Satd. Flow (perm) 470 1844 1792 1387 1562 Volume (vph) 188 663 2 2 684 48 2 1 1 21 0 243 Peak-hour factor, PHF 0.93 0.93 0.93 0.91 0.91 0.91 0.33 0.33 0.33 0.77 0.77 0.77 Adj. Flow (vph) 202 713 2 2 752 53 6 3 3 27 0 316 RTOR Reduction (vph) 0 0 0 0 4 0 0 2 0 0 203 0 Lane Group Flow (vph)' 202 715 0 0 803 0 0 10 0 0 140 0 Heavy Vehicles 3% 3% 3% 5% 5% 5% 0% 0% 0% 4% 4% 4% Turn Type pm+pt Perm Perm Perm Protected Phases 7 4. 8 2 6 Permitted Phases 4 8 2 6 Actuated Green, G (s) 33.2 33.2 26.3 9.5 9.5 Effective Green, g (s) 33.2 33.2 26.3 9.5 9.5 11 . Actuated g/C Ratio 0.65 0.65 0.52 0.19 0.19 Clearance Time (s) 4.0 4.0 4.6 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 381 1208 930 260 293 v/s Ratio Prot 0.03 c0.39 v/s Ratio Perm 0.32 c0.45 0.01 c0.09 v/c Ratio 0.53 0.59 0.86 0.04 0.48 Uniform Delay, d1 6.1 4.9 10.6 16.9 18.4 Progression Factor 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 1.4 0.8 8.4 0.1 1.2 Delay (s) 7.5 5.7 19.0 16.9 19.6 Level of Service A A B B B Approach Delay (s) 6.1 19.0 16.9 19.6 Approach LOS A B B B . _ _ . '-F-77 f - lntersect~on Summary-" ~ ~ " ~ - HCM Average Control Delay 13.4 HCM Level of Service . B HCM Volume to Capacity ratio 0.77 Actuated Cycle Length (s) 50.7 Sum of lost time (s) 1270 Intersection Capacity Utilization 100.3% ICU Level of Service G An Period (min) 15 c Critical Lane Group 2015 Without Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 5 ° H`CM Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE 7/26/2010 * 'a Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations t r t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.95 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Fit Protected 0.95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (Prot) 1736 1739 1770 1863 1583 1752 1845 1568 1770 1863 1583 Flt Permitted 0.95 1.00 0.95 1.00 1.00 0.32 1.00 1.00 0.40 1.00 1.00 Satd. Flow (perm) 1736 1739 1770 1863 1583 587 1845 1568 751 1863 1583 Volume (vph) 130 212 101 256 188 54, 57 171 261 68. 188 90 Peak-hour factor, PHF 0.82 0.82 0.82 0.84. 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 159, 259 123 305 224 64 64 192 293 89 247 118 RTOR Reduction (vph) 0 7 0 0 0 27 0 0 241 0 0 32 Lane Group Flow (vph) 159 375 0 305 224 37 64 192 52 89 247 86 Heavy Vehicles 4% 4% 4% 2% 2% 2% 3% 3% 3% 2% 2% 2% Turn Type Prot Prot Perm pm+pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 4 8 8 Actuated Green, G (s) 14.9 38.7 23.2 47.0 47.0 25.2 18.3 18.3 26.8 19.1 19.1 Effective Green, g (s) 15.9 39.7 24.2 48.0 48.0 27.2 19.3 19.3 28.8 20.1 20.1 Actuated g/C Ratio 0.15 0.37 0.22 0.44 0.44 0.25 0.18 0.18 0.27 0.19 0.19 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 256 640 397 829 704 233 330 280 283 347 295 v/s Ratio Prot 0.09 c0.22 c0.17 0.12 0.02 0.10 c0.03 c0.13 v/s Ratio Perm 0.02 0.05 0.03 0.06 0.05 v/c Ratio 0.62 0.59 0.77 0.27 0.05 0.27 0.58 0.19 0.31 0.71 0.29 Uniform Delay, d1 43.2 27.5 39.2 18.9 17.0 31.7 40.6 37.6 30.8 41.2 37.8 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 4.6 3.9 8.7 0.8 0.1 0.6 2.6 0.3 0.6 6.7 0.6 Delay (s) 47.8 31.4 47.9 19.7 17.2 32.4 43.2 38.0 31.4 47.9 38.3 Level of Service D C D B B C D D C D D Approach Delay (s) 36.2 33.9 39.1 42.2 Approach LOS D C D D. ;Intersection Summary _ HCM Average Control Delay 37.6 HCM Level of Service D HCM Volume to Capacity ratio 0.61 Actuated Cycle Length (s) 107.9 Sum of lost time (s) 12.0 Intersection Capacity Utilization 58.9% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 Without Project PM Peak Synchro 6 Report Transportation Engineering Northwest Pagel ° HCM Signalized Intersection Capacity Analysis ° 5: "SE 320th St" & "124th Ave SE" 7/26/2010 Movement EBL EBT WBT WBR SBL SBR Lane Configurations r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900, Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1752 1845 1900 1615 1787 1599 Fit Permitted 0.61 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 1120 1845 1900 1615 1787 1599 Volume (vph) 242 36 61 188 111 246 Peak-hour factor, PHF 0.89 0.89 0.89 0.89 0.89 0.89 Adj. Flow (vph) 272 40 69 211 125 276 RTOR Reduction (vph) 0 0 0 109 0 213 Lane Group Flow (vph) 272 40 69 102 125 63 Heavy Vehicles 3% 3% 0% 0% 10% 1 % Turn Type pm+pt pm+ov pm+ov Protected Phases 5 2 6 8 8 5 Permitted Phases 2 6 8 Actuated Green, G (s) 31.1 31.1 22.1 32.3 10.2 15.2 Effective Green, g (s) 32.1 32.1 23.1 34.3 11.2 16.2 Actuated g/C Ratio 0.45 0.45 0.32 0.48 0.16 0.23 Clearance Time (s) 4.0 5.0 5.0 5.0 5.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 549 831 616 868 281 363 v/s Ratio Prot c0.03 0.02 0.04 0.02 c0.07 0.01 v/s Ratio Perm c0.19 0.04 0.03 v/c Ratio 0.50 0.05 0.11 0.12 0.44 0.17 Uniform Delay, d1 13.8 11.0 116.9 10.2 27.2 22.2 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.7 0.0 0.4 0.1 1.1 0.2 Delay (s) 14.5 11.0 17.3 10.2 28.4 22.4 Level of Service B B B B C C Approach Delay (s) 14.1 12.0 24.2 Approach LOS B B C Intersection Summary HCM Average Control Delay 17.6 HCM Level of Service B HCM Volume to Capacity ratio 0.48 Actuated Cycle Length (s) 71.3 Sum of lost time (s) 28.0 Intersection Capacity Utilization 32.9% ICU Level of Service A Analysis Period (min) 15 c Critical Lane Group 2015 Without Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 2 H'CM Signalized Intersection Capacity Analysis 6: 132nd Ave SE & SE 304th St 7/26/2010 Movement EBL EBT WBT WBR 56L SBR Lane Configurations t t r Ideal Flow (vphpl) 1900 1900, 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Fit. Protected 0.95 1.00 1.00 1.00 0.95 1.00 Said. Flow (Prot) 1787 1881 1881 1599 1770 1583 Flt Permitted 0.27 1.00 1.00 1.00 0.95 1.00 Satd Flow (perm) 503 1881 1881 1599 1770 1583 Volume (vph) 121 369 391 436 382 143 Peak-hour factor, PHF 0.90 0.90 0.95 0.95 0.94 0.94 Adj. Flow (vph) 134 410 412 459 406 152 RTOR Reduction (vph) 0 0 0 312 0 102 Lane Group Flow (vph) 134 410 412 147 406 50 Heavy Vehicles 1 % 1 % 1 % 1 % 2% 2% Turn Type pm+Pt Perm Perm Protected Phases 7 4 8 6 Permitted Phases 4 .8 6 Actuated Green, G (s) 20.6 20.6 13.7 13.7 14.1 14.1 Effective Green, g (s) 20.6 20.6 13.7 13.7 14.1 14.1 Actuated g/C Ratio 0.48 0.48 0.32 0.32 0.33 0.33 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 330 907 604 513 584 523 v/s Ratio Prot 0.03 c0.22 c0.22 c0.23 v/s Ratio Perm 0.17 0.09 0.03 v/c Ratio 0.41 0.45 0.68 0.29 0.70 0.10 Uniform Delay, d1 7.2 7.3 12.6 10.8 12.4 9.9 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.8 0.4 3.2 0.3 3.6 0.1 Delay (s) 8.0 7.7 15.8 11.2 16.0 10.0 Level of Service A A B B B A Approach Delay (s) 7.8 13.3 14.4 Approach LOS A B B ~Crifersection Summary HCM Average Control Delay 12.1 HCM Level of Service B HCM Volume to Capacity ratio 0.69 Actuated Cycle Length (s) 42.7 Sum of lost time (s) 12.0 Intersection Capacity Utilization 58.4% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 Without Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 3 HCM Signalized Intersection Capacity Analysis n ° 10: 105th PI SE & Lea Hill Rd SE 7/26/2010 Lane Configurations Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 Frt 1.00 0.96 1.00 Fit Protected 0.95 1.00 1.00 Satd. Flow (prot) 1791 1798 1843 Flt Permitted 0.95 1.00 0.92 Satd. Flow (perm) 1791 1798 1704 Volume (vph) 290 2 691 334 6 417. Peak-hour factor, PHF 0.88 0.88 0.94 0.94 0.92 0.92 Adj. Flow (vph) 330 2 735 355 7 453 RTOR Reduction (vph) 0 0 26 0 0 0 Lane Group Flow (vph) 332 0 1064 0 0 460 Heavy Vehicles 1 % 1 % 1 % 1 % 3% 3% Turn Type Perm Protected Phases 8 2 6 Permitted Phases 6 Actuated Green, G (s) 14.5 40.1 40.1 Effective Green, g (s) 14.5 . 40.1 40.1 Actuated g/C Ratio 0.23 0.64 0.64 Clearance Time (s) 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 Lane Grp Cap (vph) 415 1152 1092 v/s Ratio Prot c0.19 c0.59 v/s Ratio Perm 0.27 v/c Ratio 0.80 0.92 0.42 Uniform Delay, d1. 22.7 9.9 5.5 Progression Factor 1.00 1.00 1.00 .Incremental Delay, d2 10.6 12.2 0.3 Delay (s) 33.2 22.1 5.8 Level of Service C C A Approach Delay (s) 33.2 22.1 5.8 Approach LOS C C A HCM Average Control Delay 20.1 HCM Level of Service C HCM Volume to Capacity ratio 0.89 Actuated Cycle Length (s) 62.6 Sum of lost time (s) 8.0 Intersection Capacity Utilization 79.6% ICU Level of Service D Analysis Period (min) 15 c Critical Lane Group 2015 Without Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 4 ° HCI I Signalized Intersection Capacity Analysis 11: SE 320th St & 104th Ave SE 7/26/2010 *Q I i Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 4 4* Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 0.99 1.00 0.88 At Protected 0.95 1.00 1.00 1.00 .0.99 Satd. Flow (prot) 1787 1880 1870 1900 1648 Flt Permitted 0.14 1.00 1.00 1.00 0.96 Satd. Flow (perm) 257 1880 1870 1900 1592 Volume (vph) 289 942 4 0 645 28 0 1 0 55 0 .400 Peak-hour factor, PHF 0.99 0.99 0.99 0.98 0.98 0.98 0.25 0.25 0.25 0.79 0.79 0.79 Adj. Flow (vph) 292 952 4 0 658 29 0. 4 0 70, 0 506 RTOR Reduction (vph) 0 0 0 0 2 0 0 0 0 0 291 0 Lane Group Flow (vph) 292 956 0 0 685 0 0 4 0 0 285 0 Heavy Vehicles 1 % 1% 1 % 1 1% 1% 0% 0% 0% 1% 1 % 1 % Turn Type pm+pt Perm Perm Perm Protected Phases - 7 4 8 2 6 Permitted Phases 4 8. 2 6 Actuated Green, G (s) 39.1 39.1 25.3 14.3 14.3 Effective Green, g (s) 39.1 39.1 .25.3 14.3 14.3 Actuated g/C Ratio 0.64 0.64 0.41 0.23 0.23 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 408 1197 771 443 371 v/s Ratio Prot 0.11 60.51 c0.37 0.00 v/s Ratio Perm 0.34 60.18 v/c Ratio 0.72 0.80 0.89 0.01 0.77 Uniform Delay, d1 11.0 8.2 16.7 18.1 22.0 Progression Factor 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 5.9 3.8 12.1 0.0 9.3 Delay (s) 17.8 12.0 28.8 18.1 31.3 . C Level of Service B B C B Approach Delay (s) 13.4 28.8 18.1 31.3 Approach. LOS B C B. C 'Intersection Summary HCM Average Control Delay 21.7 HCM Level of Service C HCM Volume to Capacity ratio 0.86 Actuated Cycle Length (s) 61.4 Sum of lost time (s) 12.0 Intersection Capacity Utilization 129.9% ICU Level'of Service H Analysis Period (min) 15 c Critical Lane Group 2015 Without Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 5 v HCM Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE 11I2/16/2010 Movement EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations t r t r t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.93 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0.95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 1736 1695 1770 1863 1583 1752 1845 1568 1770 1863 1583 Flt Permitted 0.95 1.00 0.95 1.00 1.00 0.08 1.00 1.00 0.55 1.00 1.00 Satd. Flow (perm) 1736 1695 1770 1863 1583 142 1845 1568 1017 1863 1583 Volume (vph) 103 137 127 513 199 49 77 160 143 46 345 98 Peak-hour factor, PHF 0.82 0.82 0.82 0.84 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 126 167 155 611 237 58 87 180 161 61, 454 129 RTOR Reduction (vph) 0 17 0 0 0 26 0 0 115 0 0 16 Lane Group Flow (vph) 126 305 0 611 237 32 87 180 46 61 454 113 Heavy Vehicles 4% 4% 4% 2% 2% 2% 3% 3% 3% 2% 2% 2% Turn Type Prot Prot Perm pm+pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 4 8 8 Actuated Green, G (s) 17.6 42.7 64.9 90.0 90.0 57.9 50.9 50.9 51.7 47.8 47.8 Effective Green, g (s) 18.6 43.7 65.9 91.0 91.0 59.9 51.9 51.9 53.7 48.8 48.8 Actuated g/C Ratio 0.10 0.24 0.36 0.50 0.50 0.33 0.28 0.28 0.29 0.27 0.27 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 177 406 639 929 790, 117 525 446 320 498 424 v/s Ratio. Prot 0.07 c0.18 c0.35 0.13 c0.03 0.10 0.01 c0.24 v/s Ratio Perm 0.02 0.21 0.03 0.05 0.07 v/c Ratio 0.71 0.75 0.96 0.26 0.04 0.74 0.34 0.10 0.19 0.91 0.27 Uniform Delay, d1 79.3 64.3 56.8 26.2 23.4 49.2 51.7 48.1 47.2 64.7 52.7 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 12.7 12.1 25.0 0.7 0.1 22.3 0.4 0.1 0.3 20.9 0.3 Delay (s) 92.0 76.4 81.8 26.9 23.5 71.5 52.1 48.2 47.5 85.6 53.0 Level of Service F E F C C E D D D F D Approach Delay (s) 80.8 63.7 54.6 75.5 Approach LOS F E D E ;Intersection Summary ~_77- HCM Average Control Delay 68.4 HCM Level of Service E HCM Volume to Capacity ratio 0.90 Actuated Cycle Length (s) 182.4 Sum of lost time (s) 20.6 Intersection Capacity Utilization 79.2% ICU Level of Service D Analysis Period (min) 15 c Critical Lane Group 2015 With Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 HCM Signalized Intersection Capacity Analysis a 5: "SE 320th St" & "124th Ave SE" 12/16/2010 4.1 Movement EBL "EBT INBT " BR SBL SBR: Lane Configurations t t r Ideal Flow:(vphpl) 1900 1900 1900 '1900 1900: 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util:.Factor 1.00 1.00. 1`00. 1.00. '1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 .0.85 Flt `Protected 0.95.. -1.00 1.0 1.00 0.95: 1.00 Satd. Flow (prot) 1703 1792 1881 1599 1770 1583 Flt:Permitted 0.64 1.00. "1:00 1.00 0.95 1.00 Satd. Flow (perm) 1148 1792 1881 1599 1770 1583 Volume (vph) 204 120 9 43 465 416 Peak-hour factor, PHF 0.82 0.82 0.82 0.82 0.82 0.82 Ad . Flow. v h 249 146 1.1 52 567 507 RTOR Reduction (vph) 0 0 0 21 0 319 Lane Group Flow (vph) 249 146.. 11 31 56T 188, Heavy Vehicles 6% 6%0 1 % 1 % 2% 2%y Turri Type . Pm.±Pt Pm+oV Protected Phases 5 2 6 8 8 5 ,Permitted Phases s: ' 2 6 8 Actuated Green, G (s) 31.4 31.4 22.3 46.6 24.3 29.4 Effective Green, g (s) . 32:4 32.4 23.3 48.6 25.3 30.4 Actuated g/C Ratio 0.40 0.40 0.28 0.59 0.31 0.37 Clearance`Time (s): 4"G., 6'b 5.0 5:0 4.'0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane.Grp Cap (vph) 489 709. 535 -1027- 547 588 v/s Ratio Prot c0.03 0.08 0.01 0.01 c032 0.02 w/s Ratio Perm c0.17 .0.01, 0.10 .v/c Ratio 0.51 0.21 0.02 0.03 1.04 0.32 Uniform Delay d1 19.0 16.3 2,1.f. 6.9 283, 18:4 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, 02 0 8 0.1 0.1 0.0 48.3 0.3 belay (s) . 19.8 16.4 21.2 6.9 76.6 18.7 Level-of Service B, B C- A E: B Approach Delay (s) 18.5 9.4 49.2 Approach LOS B A" D Intersection Summary _7 HCM Average Control Delay 39.7 HCM Level of Service D HCM Volume to Capacity ratio 0.74 Actuated Cycle Length (s) 81 9 Sum of lost.time (s) . 24:2 Intersection Capacity Utilization 50.4% ICU Level of Service A Anal sis Period min c Critical Lane Group 2015 With Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 2 r HCM Signalized Intersection Capacity Analysis 6: 132nd Ave SE & SE 304th St 12/16/2010 k. \I. 4/ )Movement EBL EBT WBT WBR . SBL SBR Lane Configurations + Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 . 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1770 1863 1845 1568 1736 1553. Flt Permitted 0.16 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 307 1863 1845 1568 1736 1553 Volume (vph) 66 217 548 313 394 119 Peak-hour factor, PHF 0.91 0.91 0.87 0.87 0.91 0.91 Adj. Flow (vph) 73 238 630 360 433 131 RTOR Reduction (vph) 0 0 0 215 0 89 Lane Group Flow (vph) 73 238 630 145 433 42 Heavy Vehicles 2% 2% 3% 3% 4% 4% Turn Type pm+pt Perm Perm Protected Phases 7 4 8 6 Permitted Phases 4 8 6 Actuated Green, G (s) 26.3 26.3 20.3. 20.3 16.2 16.2 Effective Green, g (s) 26.3 26.3 20.3 20.3 16.2 16.2 Actuated g/C Ratio 0.52 0.52 0.40 0.40 0.32 0.32 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 218 .970 742 630 557 498 v/s Ratio Prot 0.01 c0.13 c0.34 c0.25 v/s Ratio Perm 0.16 0.09 0.03 v/c Ratio 0.33 0.25. 0.85 0.23 0.78 0.08 Uniform Delay, d1 8.9 _ 6.6 13.7 9.9 15.5 12.0 _ Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.9 0.1 9.0 0.2 6.7 0.1 Delay (s) 9.8 6.8 22.7 10.1 22.3 12.0 Level of Service A A C B C B Approach Delay (s) 7.5 18.1 19.9 Approach LOS A B B ;Intersection Summary -~~f HCM Average Control Delay 16.9 HCM Level of Service B HCM Volume to Capacity ratio 0.80 Actuated Cycle Length (s) 50.5 Sum of lost time (s) 12.0 Intersection Capacity Utilization 64.3% ICU Level of Service C Analysis Period (min) 15 C Critical Lane Group 2015 With Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 3 HCM Signalized Intersection Capacity Analysis 10: 105th PI SE & Lea Hill Rd SE 12/16/2010 a Movement' WBL WBR NBT NBR SBL 'SBT Lane Configurations Y T 4 Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 Frt 1.00 0.94 1.00 Flt Protected 0.95 1.00 1.00 Satd. Flow (prot) 1787 1706 1844 At Permitted 0.95 1.00 0.99 Satd. Flow (perm) 1787 1706 1831 Volume (vph) 21.5 7 396 290 5 .466 Peak-hour factor, PHF 0.79 0.79 0.85 0.85 0.87 0.87 Adj. Flow (vph) 272 9 466 341 6 536 RTOR Reduction (vph) 4 0 50 0 0 0 Lane Group Flow (vph) 277 0 757 0 0 542 Heavy Vehicles 1% 1% 5%° 5% 3% 3% Turn Type Perm Protected Phases 8 2 6 Permitted Phases 6 Actuated Green, G (s) 9.8 21.4 21.4 Effective Green, g (s) 9.8 21.4 21.4 Actuated g/C Ratio 0.25 0.55 0.55 Clearance Time (s) 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 Lane Grp Cap (vph) 447 931 1000 v/s Ratio Prot c0.16 c0.44 v/s Ratio Perm 0.30 v/c Ratio 0.62 0.81 0.54 Uniform Delay, d1 13.0 7.3 5.7 Progression Factor 1.00 1.00 1.00 Incremental Delay, d2 2.7 5.5 0.6 Delay (s) 15.7 12.8 6.3 Level of Service B B A Approach Delay (s) 15.7 12.8 6.3 Approach LOS B B A :~7 tnfersection SummaryHCM Average Control Delay 11.1 HCM Level of Service B HCM Volume to Capacity ratio 0.75 Actuated Cycle Length (s) 39.2 Sum of lost time (s) 8.0 Intersection Capacity Utilization 57.6% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 With Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 4 a t 6 o H'CM Signalized Intersection Capacity Analysis 11: SE 320th St & 104th Ave SE 11I2/16/2010 ;Movement ` ENE EBT- EBR °WBL WBT WBR_ NBL NBT+rvNBR SBLr -SBT SBF~ Lane Configurations c~a c Ideal. Flow (vphpl) 1900 1900 1900 1900 1900. 1900 1900 1900 1,900 1900 1900` 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00: 1:00 1.00 1.00 1.00, Frt 1.00 1.00 0.99 0.97 0.88 Flt Protected 0.95 1.00. 1.00 0.98 1.00 Said. Flow (prot) 1752 1844 1793 1791 1593 Flt Permitted 0.25 1.00 - 1.00 :0:76 0:98 Satd. Flow (perm) 469 " 1844 1792 1387 1562 Volume.(vph) 188 676 2 2 686 48 2 - 1 ;1: 21 0 °243 Peak-hour factor, PHF 0.93 0.93 0.93 0.91 0.91 0.91 0.33 0.33 0.33 0.77 0.77 0.77 Adj. Flow (vph) 202 727 2 2 754 53 6 3 3 27 0 316 RTOR Reduction (vph) 0 0 0 0 4 0 0 2 0 0 203 0 0 0 10. 0 0 140 0 Lane Group Flow (vph) 202 729 0 0' 805 , Heavy Vehicles 3% 3%° 3% 5% 5% 5%° 0% 0% 0% 4% 4% 4% Turn Type pm+pt Perm. Perm Perm Protected Phases 7 4 8 2 6 Permitted Phases 4 8 2 6 Actuated Green, G (s) 33.2 33.2 26.3 9.5 9.5 Effective Green, g (s) 33.2 33.2 9.5 _:.9 5 . Actuated g/C Ratio 0.65 0.65 0.52 0.19 0.19 Clearance Time (s) 4.0 .4.0. 4.0 4.0 4.16 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 .Lane Grp Cap (vph) 381 1208 930 260 293.:.. v/s Ratio Prot 0.03 c0.40 v/s Ratio Perm. 0.32 c0.45 0.01 c0.09 v/c Ratio 0.53 0.60 0.87 0.04 0.48 11 Uniform Delay, d1 6.1 5.0 10.7 16:9 18 4 ; Pro " ression Factor 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 1.4 o.'9 8.5, 0:1 9 2 Delay (s) 7.5 5.9 19.1 16.9 19.6 Level of Service A q g _g B Approach Delay (s) 6.2 19.1 16.9 19.6 APProach LOS A B 8 13,-7 77 . Intersection Sammar 77 ` HCM Average Control Delay 13.5 HCM Level of Service B HCM Volume to Capacity ratio 0.77 Actuated Cycle Length (s) 50 7 Sum of lost time (s) : 12:0 Intersection Capacity Utilization 101.1% ICU Level of Service G Analysis Period (min) 15 : _ c Critical Lane Group 2015 With Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 5 HCM Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE 12/16/2010 Movement EBL EBT EBR WBL . WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations t r t r t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 19,00 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.95 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0:95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 1736 1739 1770 1863 1583 1752 1845 1568 1770 1863 1583 Fit Permitted 0.95 1.00 0.95 1.00 1.00 0.31 1.00 1.00 0.40 1.00 1.00 Said. Flow (perm) 1736 1739 1770 1863 1583 577 1845 1568 745 1863 1583 Volume (vph) 130 212 101 260 188 54 57 173 265 68 190 90 Peak-hour factor, PHF 0.82 0.82 0.82 0.84 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 159 259 123 310 224 64 64 194 298 89 250 118 RTOR Reduction (vph) 0 7 0 0 0 27 0 0 244 0 0 31 Lane Group Flow (vph) 159 375 0 310 224 37 64 194 54 89. 250 87 Heavy Vehicles 4% 4% 4% 2% 2% 2% 3% 3% 3% 2% 2% 2% Turn Type Prot Prot Perm pm+pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 4 8 8 Actuated Green, G (s) 14.9 38.6 23.5 47.2 47.2 25.4 18.5 18.5 27.0 19.3 19.3 Effective Green, g (s) 15.9 39.6 24.5 48.2 48.2 27.4 19.5 19.5 29.0 20.3 20.3 Actuated g/C Ratio 0.15 0.37 0.23 0.45 0.45 0.25 0.18 0.18 0.27 0.19 0.19 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 10 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 255 636 400 829 705 232 332 282 282 349 297 v/s Ratio Prot 0.09 c0.22 c0.18 0.12 0.02 0.11 c0.03 c0.13 v/s Ratio Perm 0.02 0.05 0.03 0.06 0.06 v/c Ratio 0.62 0.59 0.78 0.27 0.05 0.28 0.58 0.19 0.32 0.72 029 Uniform Delay, dl 43.4 27.8 39.3 19.0 17.1 31.8 40.7 37.7 30.9 41.3 37.8 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 4.7 4.0 9.1 0.8 0.1 0.6 2.6 0.3 0.6 6.8 0.6 Delay (s) 48.1 31.8 48.4 19.8 17.2 32.4 43.3 38.0 31.5 48.1 38.4 Level of Service D C D B B C D D C' D D Approach Delay (s) 36.6 34.3 39.2 42.4 Approach LOS D C D D intersection Summary - HCM Average Control Delay 37.9 HCM Level of Service D HCM Volume to Capacity ratio 0.62 Actuated Cycle Length (s) 108.3 Sum of lost time (s) 12.0 Intersection Capacity Utilization 59.2% ICU Level of Service B Analysis Period (min) 15 - c Critical Lane Group 2015 With Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 1 HCM Signalized Intersection Capacity Analysis , 5: "SE 320th St" & "124th Ave SE" 12/16/2010 Movement EBL EBT WBT V1BR SBL SBR ; Lane Configurations t t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1752 1845 1900 1615 1787 1599 Flt Permitted 0.61 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 1126 1845 1900 1615 1787 1599 Volume (vph) 251 31 55 178 97 256 Peak-hour factor, PHF 0.89 0.89 0.89 0.89 0.89 0.89 Adj. Flow (vph) 282 35 62 200 109 288 RTOR Reduction (vph) 0 0 0 105 0 225 Lane Group Flow (vph) 282 35 62 95 109 63 Heavy Vehicles 3% 3% 0% 0% 1% 1% Turn Type pm+pt pm+ov pm+ov Protected Phases 5 2 6 8 8 5 Permitted Phases 2 6 8 Actuated Green, G (s) 31.0 31.0 22.0 31.5 9.5 14.5 Effective Green, g (s) 32.0 32.0 23.0 33.5 10.5 15.5 Actuated g/C Ratio 0.45 0.45 0.33 0.48 0.15 0.22 Clearance Time (s) 4.0 5.0 5.0 5.0 5.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 555 837 620 859 266 352 v/s Ratio Prot c0.04 0.02 0.03 0.02 c0.06 0.01 v/s Ratio Perm c0.19 0.04 0.03 v/c Ratio 0.51 0.04 0.10 0.11 0.41 0.18 Uniform Delay, d1 13.7 10.7 16.5 10.2 27.2 22.3 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.7 0.0 0.3 0.1 1.0 0.2 Delay (s) 14.4 10.7 16.9 10.3 28.2 22.6 Level of Service B B B B C C Approach Delay (s) 14.0 11.9 24.1 Approach LOS B B C ntersection Summary HCM Average Control Delay 17.5 HCM Level of Service B HCM Volume to Capacity ratio 0.48 Actuated Cycle Length (s) 70.5 Sum of lost time (s) 28.0 Intersection Capacity Utilization 32.6% ICU Level of Service A Analysis Period (min) 15 c Critical Lane Group 2015 With Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 2 v HCI I Signalized Intersection Capacity Analysis 6: 132nd Ave SE & SE 304th St 12/16/2010 Movement . EBL EBT WBT . WBR SBL SBR Lane Configurations r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 1.00 1.00 0.85 1.00 0.85 Flt Protected 0.95 1.00 1.00 1.00 0.95 1.00 Satd. Flow (prot) 1787 1881 1881 1599 1770 1583 Flt Permitted 0.26 1.00 1.00 1.00 0.95 1.00 Satd. Flow (perm) 495 1881 1881 1599 1770 1583 Volume (vph) 121 373 395 436 382 143 Peak-hour factor, PHF 0.90 0.90 0.95 0.95 0.94 0.94 Adj. Flow (vph) 134 414 416 459 406 152 RTOR Reduction (vph) 0 0 0 312 0 102 Lane Group Flow (vph) 134 414 416 147 406 50 Heavy Vehicles 1 % 1 % 1% 1% 2% 2% Turn Type pm+pt Perm Perm Protected Phases 7 4 8 6 Permitted Phases 4 8 6 Actuated Green, G (s) 20.6 20.6 13.7 13.7 14.1 14.1 Effective Green, g (s) 20.6 20.6 13.7 13.7 14.1 14.1 Actuated g/C Ratio 0.48 0.48 0.32 0.32 0.33 0.33 Clearance Time (s) 4.0 4.0 4.0 4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 327 907 604 513, 584 523 v/s Ratio Prot 0.03 c0.22 c0.22 c0.23 v/s Ratio Perm 0.17 0.09 0.03 v/c Ratio 0.41 0.46 0.69 0.29 0.70 0.10 Uniform Delay, dl 7.2 7.3 12.6 10.8 12.4 9.9 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 0.8 0.4 3.3 0.3 3.6 0.1 Delay (s) 8.1 7.7 15.9 11.2 16.0 10.0 Level of Service A A B B B A Approach Delay (s) 7.8 13.4 14.4 Approach LOS A B B ~nfersection summary - HCM Average Control Delay 12.1 HCM Level of Service B HCM Volume to Capacity ratio 0.69 Actuated Cycle Length (s) 42.7 Sum of lost time (s) 12.0 . Intersection Capacity Utilization 58.7% ICU Level of Service B Analysis Period (min) 15 c Critical Lane Group 2015 With Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 3 HCM Signalized Intersection Capacity Analysis g 10: 105th PI SE & Lea Hill Rd SE I 12/16/2010 Arlovement 4 WBL WBR NBT NBR " .SBL SBT f 77 77 Lane Configurations ~i Ideal Flow (vphpl) 1900 1900 1.900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00. 1.00 , Frt 1.00 0.96 1.00 Flt Protected 0.95 1.06 1.00 Satd. Flow (prot) 1791 1798 1843 Fit Permitted 0.96:' . 1.00 0.91 Satd. Flow (perm) 1791 1798 1679 Volume v h 294 2 691 338 6 417 Peak-hour factor, PHF 0.88 0.88 0.94 0.94 0.92 0.92 Ad'. Flow v h -334 2 735 360 7 453 RTOR Reduction (vph) 0 0 26 0 0 0 Lane Group Flow (vph) 336, 0 1069. _ 0 0. 460 . Heavy Vehicles 1 % 1 %0 1% 1 3/° ° ° 3/° Turn Type Perm Protected Phases 8 2 6 Permitted Phases 6. Actuated Green, G (s) 14.6 40.1 40.1 Effective Green, ',g' (s)' 14.6 40.1 40.1 Actuated g/C Ratio 0.23 0.64 0.64 Clearance Time (s) 4.0 4:0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 Lane Grp Cap _(vph) 417 1150 1074, v/s Ratio Prot c0.19 c0.59 v/s Ratio. Perm 0.27 v/c Ratio 0.81 0.93 0.43 Uniform Delay, 01 22.7 10.0 5.6 Progression Factor 1.00 1.00 1.00 Incremental Delay, d2 10.8 12:8 0.3 Delay (s) 33.5 22.8 5.9 Level of Service C C A' Approach Delay (s) 33.5 22.8 5.9 Approach LOS C C A jlntefoectiofl Summary ' '7 ` HCM Average Control Delay 20.6 HCM Level of Service C HCM Volume to Capacity ratio 0.90 11 Actuated Cycle Length (s) 62.1 Sum of lost time (s) 8.0 Intersection Capacity Utilization 80.0% ICU Level of Service D Analysis Period (min)_ 15 c Critical Lane Group 2015 With Project PM Peak Synchro 6 Report Transportation Engineering Northwest _ Page 4 HCM Signalized Intersection Capacity Analysis 11: SE 320th St & 104th Ave SE 12/16/2010 Movement EBL ~ .EBT EBR, . WBL WBT. WBRNBL p : N BT; NBR SBL : . SBT. ; ,SBR Lane Configurations 4 ddealFlow vphP)I 1900 1900 1900 1900 1900 1900 1900 1900 1.900 :1_900 ,1900. 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 Lane Util.. Factor 1.00 1.00 1.00 1.00 Frt 1.00 1.00 0.99 1.00 0.88 Flt Protected 0.95 1 00 100 1.00 0.:99 . Satd. Flow (prot) 1787 1880 1871 1900 1648 Flt Permitted 0:14 1.00 1.00 1.00 0.96 Satd. Flow (perm) 255 1880 1871 1900 1592 Volume.(vph) 289 946, 4 0. 649 28 0 1 0 55 0 400 Peak-hour factor, PHF 0.99 0.99 0.99 0.98 0.98 0.98 0.25 0.25 0.25 0.79 0.79 0.79 Adj. Flow (vph) :292 956 4 0 662 29 0 4 0 70 0 506 11 RTOR Reduction (vph) 0 0 0 0 2 0 0 0 0 0 289 0 Lane Group Flow'(vph) 292 960 0` 0 689 0 -O .4 -:'0 0 287 0. Heavy Vehicles 1 % 1 % 1 1 % 1 % 1 % 0%° 0% 0% 1 % 1 % 1 % Turn Type pm+pt Perm Perm Perm Protected Phases 7 4 8 2 6 Permitted Phases. 4 8 2 6 Actuated Green, G (s) 39.3 39.3 25.5 14.4 14.4 . , 39.3 25:5 14.4 Effective Green, 9 (s). 39.3 14.4 Actuated g/C Ratio 0.64 0.64 0.41 0.23 0.23 Clearance Time (s). 4.0 4.0 ,4.0 4.0 4.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap (vph) 4061.1' 1197 773 443 372 v/s Ratio Prot 0.11 c0.51 c0.37 0.00 v/s Ratio Perm -0.34 60.18 ` . v/c Ratio 0.72 0.80 0.89 0.01 0.77 Uniform Delay d1 12.1 8.3 16.8 18.2 22 1 Progression Factor 1.00 1.00 1.00 1.00 1.00 incremental Delay, d2 6.0 4.0 12.5 0.0 9.5 11 Delay (s) 18.1 12.3 29.3 18.2 31.6"_" Level of, Service B B, ,C B C Approach Delay (s) 13 6 29.3 18.2 31 6 Approach LOS . B C B C i tntersectiori Summary, r~ HCM Average Control Delay.. 22.0 HCM Level of Service C HCM Volume to Capacity ratio 0.86 Actuated Cycle Length (s) 61.7 Sum of lost time (s) 12.0 Intersection Capacity Utilization 130.3%° ICU Level of Service H Analysis Period (min) 15 c Critical Lane Group 2015 With Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 5 9 9 HCM Signalized Intersection Capacity Analysis 1: SE 312th St & 124th Ave SE 1/4/2011 - fi 4% _ . Movement W EBL EBT EBR WBL WBT WBR NBL NBT NBR SBL SBT SBR Lane Configurations 1~ t r t r t r Ideal Flow (vphpl) 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 1900 Total Lost time (s) 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 4.0 Lane Util. Factor 1.00 1.00 0.97 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Frt 1.00 0.93 1.00 1.00 0.85 1.00 1.00 0.85 1.00 1.00 0.85 Flt Protected 0.95 1.00 0.95 1.00 1.00 0.95 1.00 1.00 0.95 1.00 1.00 Satd. Flow (prot) 1736 1695 3433 1863 1583 1752 1845 1568 1770 1863 1583 Flt Permitted 0.95 1.00 0.95 1.00 1.00 0.19 1.00 1.00 0.57 1.00 1:00 Satd. Flow (perm) 1736 1695 3433 1863 1583 346 1845 1568 1068 1863 1583 Volume (vph) 103 137 127 513 199 49 77 160 143 46 345 98 Peak-hour factor, PHF 0.82 0.82 0.82 0.84 0.84 0.84 0.89 0.89 0.89 0.76 0.76 0.76 Adj. Flow (vph) 126 167 155 611 237 58 87 180 161 61 454 129 RTOR Reduction (vph) 0 41 0 0 0 38 0 0 117 0 0 39 Lane Group Flow (vph) 126 281 0 611 237 20 87 180 44 61 454 90 . Heavy Vehicles 4% 4% 4% 2% 2% 2% 3% 3% 3% 2% 2% 2% Turn Type Prot Prot Perm pm+pt Perm pm+pt Perm Protected Phases 5 2 1 6 7 4 3 8 Permitted Phases 6 4 4 8 8 Actuated Green, G (s) 8.0 19.5 14.6 26.1 26.1 24.1 20.3 20.3 24.1 20.3 20.3 Effective Green, g (s) 9.0 20.5 15.6 27.1 27.1 26.1 21.3 21.3 26.1 21.3 21.3 Actuated g/C Ratio 0.12 0.26 0.20 0.35 0.35 0.33 0.27 0.27 0.33 0.27 0.27 Clearance Time (s) 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 Vehicle Extension (s) 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 3.0 Lane Grp Cap(vph) 200 444 685 646 549 202 503 427 400 507 431 v/s Ratio Prot 0.07 c0.17 c0.18 0.13 c0.03 0.10 0.01 c0.24 v/s Ratio Perm 0.01 0.12 0.03 0.04 0.06 v/c Ratio 0.63 0.63 0.89 0.37 0.04 0.43 0.36 0.10 0.15 0.90 0.21 Uniform Delay, d1 33.0 25.5 30.5 19.1 16.9 19.9 22.9 21.3 18.0 27.4 21.9 Progression Factor 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 Incremental Delay, d2 6.3 6.7 13.9 1.6 0.1 1.5 0.4 0.1 0.2 18.1 01 Delay (s) 39.3 32.3 44.4 20.7 17.0 21.3 23.4 21.4 18.2 45.5 22.2 Level of Service D C D C B C C C B D C Approach Delay (s) 34.3 36.4 22.2 38.2 Approach LOS C D C D Intersection Summary HCM Average Control Delay 34.0 HCM Level of Service C HCM Volume to Capacity ratio 0.77 Actuated Cycle Length (s) 78.2 Sum of lost time (s) 16.0 Intersection Capacity Utilization 65.4% ICU Level of Service C Analysis Period (min) 15 c Critical Lane Group Trades Replacement Complex - GRCC 5:00 pm 12/21/2010 2015 With Project AM Peak with Im[Squehrer6sReport Transportation Engineering Northwest Page 1 t i Appendix B 2015 Traffic Volume Forecasts GIO Transportation Engineering Northwest. LLC GRCC Trades Replacement Complex - Auburn, WA 2015 Future AM Peak Hour Turning Movement Forecasts Growth Rate= 1.0% - Existing Year = 2009 Future Year= 2015 Enter Eel, Enter Exit 53 9 32 6 2009 Existing 2015 Without Project Trades Redistributed Trips Trades Project Distribution Trades Project Trips 2015 With Project 12411, Ave BE l BE 3121h 61 124th Ave BE I BE 312th S1 124th Ave SE/SE 312th 61 124th Ave BE I BE 312th St 124th Ave BE I BE 311th 61 124th Ave BE I BE 3121h Si n a7 ° ° ~ m r- ~ _ a m a m a7 v ~ m 352 511~ 704 374 103 748 0 0% 40 % 0 13 34 103 49 7fi1 1.850 137 1,975 0 120% 23 37 1,993 199 346 471 305 367 127 500 324 0 0 0% 40% 40% 0 13 2 367 127 513 326 m m m a7 0 o e °m e m ~ % Increase = 6.2% Projad Share = 1.1% 2 2 2 2 2 2 124th Ave BE I BE 314th S1 124th Ave BE I BE 314th St 124th Ave BE I BE 314th St 124th Ave BE I BE 314th 61 124th Ave BE I BE 3141h Be 124th Ave SE/SE 3141h fit 0 0 ~ 'e m o1 N N o -FF ~ O e T 3 5 O1 0 3 5 0 0 0 0 0% 0% 0 0 3 5 0 0 1,275 0 1,353 0 0 120% 23 0 1,376 0 8 3 0 8 3 0 0 0 0 0% 0% 0 0 6 3 0 0 o e ~ o m ° %Increase= 6.1% ro Pmjed Share= 1.7% 3 3 3 3 3 3 124th Ave BE ISE 316th S1 124% A" BE I BE 316th S1 124th Ave SE/SE 316th St 124th Ave BE I BE 316th S1 124th Ave BE I BE 316th S1 124thAve BE I BE 316th S1 0 0 ~ ~ v rn ~ m m N n m N 3B ff 62 64 40 ffL3 F % 0 40 ff23 6 1,270 0 ,348 0 12. 23 1,371 65 2 26 69 2 27 0 0 0% 0% 0 EJ 0 69 2 27 v v N v e rv ~ n m N ° ° ua ao ° m N % Increase = 61% Project Share = 1-7% 4 4 4 d 4 1241h Ave BE) BE 318th St 124th Ave BE I BE 318th 51 124th Ave BE I BE 318th S1 124th Ave BE I BE 318th S1 124th Ave BE I BE 318th 61 124th Ave BE I BE 318th Si ~ N ~ o o ~ ° m n p 47 79 0 ff.. S0 B4 51 0 00% 0% 32 0 83 50 84 1,138 1,209 0 1,2]0 0 0 32 26 0 34 28 9 4 0 100% 40% 0% 6 2 0 15 6 34 28 F-1 1 7? FT v, ar m rry v m w Increase = 6.2% Projed Share = 3.0% Trampoda0on Engineering Northwest, LLC Date Printed: 1/412011 Page 1 of 3 GRCC Trades Replacement Complex - Auburn, WA 2015 Future AM Peak Hour Turning Movement Forecasts Growth Rate = 1.0 0 Existing Year = 2009 Future Year = 2015 Enter Exit Enter Exit 53 9 32 6 2009 Existing 2015 Without Project Trades Redistributed Trips Trades Project Distribution Trades Project Trips 2015 With Project 5 5 114MA-SE15E3201h31 124111 Ave SE I BE 32011 S1 12401 AVe BE I BE 32011 St 124111 All SE 15E 3101, 51 1241h AVe BE I BE 32011 S1 1241, All BE I BE 32011 St 396 162 48 60 422 fflZ2 48 60 1 E-19 40% 40% 0% 2 0 425 204 43 52 739 1,240 12 1,274 12 32 -3 80% 15 120 1,257 9 301 632 311 0 632 0 47 40% 0% 13 0 324 0 0 585 0 0 0 0 0 0 0 0 0 0 0 0 %Increase= 2.7% Project Share= 1.2% 6 6 fi 6 6 6 132nd Ave BE I BE 3041, St 132nd A- BE I BE 304th 5t 132nd Ave BE I BE 304th St 132nd A- BE I BE 304th S1 132nd Ave BE I BE 30411 St 132nd Ave BE I BE 30411 St e u> m ° ° S o ° ° ~ m TFTA TFF 616 E623 295 799 654 66 13 648 0 40% 40% 13 13 667 ff(31(j, 313 861 1,547 504 215 1,642 535 0 40% Bo% 40% 2 t6 13 1,657 548 265 574 281 0 0 609 0 40% 40% 2 2 283 0 611 % Increase = 6.1% Pmlecl Share = 0.9% 7 7 7 7 7 7 122nd Ave BE I BE 320th St 122nd AVe BE I BE 320th St 122nd Ava BE I BE 320M S1 122nd AVe BE I BE 320th S1 122nd AVe BE I BE 320M St 122nd Ave BE I BE 32011 St n r1 ev m o o ° a o o N n 396 2 1 398 422 2 1 422 0 0 40% 40% 2 2 424 2 1 424 299 702 397 317 744 421 0 40% Sit. 40% 13 15 2 330 759 423 301 301 319 0 0 319 0 0 40% 40% 13 13 332 0 0 332 o ~ o ~ 0 0 0 0 0 0 0 %Increase= 6.0% Project Share= 2.0% B 8 8 B 8 8 BE 32011, SlI West GRCC Exil BE 320th StI West GRCC Exit BE 320th St I West GRCC Exit BE 320th St I Wert GRCC Evil BE 32°1, StI West GRCC Ell BE 320th StI West GRCC Exlt 0 0 0 0 0 0 0 0 0 0 0 0 427 398 451 0 0 422 0 0 40% 40% 2 2 453 0 0 424 246 728 398 261 767 422 0 40% e0% 40% 13 15 2 274 782 424 246 301 267 0 0 316 0 0 40% 40% 13 13 274 0 0 329 o ~ o ~ 0 0 0 ii 0 0 0 ~ %Increase= 5.4% PoadShare= 1.9% - Transportation Engineering Northwest, LLC Date Printod: 114/2011 e Page 2 of 3 GRCC Trades Replacement Complex - Auburn, WA 2015 Future AM Peak Hour Turning Movement Forecasts Growth Rate = 1.0% Existing Year= 2009 Future Year = 2015 Enter E:It Enter Exit 53 9 32 6 2009 Existing 2015 Without Project Trades Redistributed Trips Trades Project Distribution Trades Project Trips 2015 With Project 9 9 9 9 9 9 BE 320th Stl West GRCC Entrance BE 3201h at I West GRCC Entrance BE 320th at I Wean GRCC Entrance. BE 320th St I Weal GRCC Entrance BE 3201h StI Weal GRCC Entrance BE 320th SI I Weal GRCC Entrance 96 427 102 0 0 433 0 0 40% 40% 2 2 104 0 0 435 24fi s54 9fi 261 975 102 8 40% Be% 40% 13 15 2 274 990 104 527 2B1 331 246 542 281 331 261 10 0 40% 40% 13 13 555 281 331 274 0 o ua o 0 0 ° o 0 o e o %Increase = 2.2% P-jecl Snare= 1.5% 10 10 0 10 10 10 105th I'l BE I Lea HIII Rd BE 105th PI BE I Lea Hill Rd BE 105th PI BE I Lea HIII Rd BE 105th PI BE I Lea HIII Rd BE 1051h PI BEI Lea HIII Rd BE 10501 PI BE I Lea HIII Rd BE 3 m a ° ° o o ° ° o a p o 7 208 0 0 v 7 220 0 J J 0 0% 40% 0 2 0 0 7 222 1,2% 0 1,366 0 0 90% 15 0 1,379 0 0 201 268 0 0 213 282 0 0 0% 40% 40% 0 2 13 0 0 215 J295 N 11 11 e sa m ° ° a 1O tO °a %Increase= 6,1% Pmlect5haro= 1.1% 11 11 1 11 it 11 104th Ave BE I Lea Hill Rd BE 104th A- BE ILea HIII Rd BE 104th Ave BE I Lea Hill Rd BE 104th Ave BE I Lea Hill Rd BE 104th Ave BE I Lea HIII Rd BE 10411, Ave BE I Lea HIII Rd BE N N `gN N ° o 0 0 0 0 ~ N T- 71- Tv 91 929 ffl,128 48 734 0 40% 40% 2 2 931 ff12 48 736 0 45 fi ffl 1.74fi44 1,955 3 1,8711 686 804 2 646 853 2 685 0 0 40% 40% 13 13 866 2 698 TT T -T-F- v e v v o 0 0 0 0 o e a % Increase = 6.1 % Pmtecl Share = 0.8% Transportation Engineering Northwest, LLC Date Printed: 11412011 Page 3 of 3 GRCC Trades Replacement Complex - Auburn, WA 2015 Future PM Peak Hour Turning Movement Forecasts Growth Rate = 1.0 a ExistingYear= 2009 Future Year = 2015 Enter Exit Enter Exit 24 18 10 11 2009 Existing 2015 Without Project Trades Redistributed Trips Trades Project Distribution Trpdes Project Trips 2015 With Project 1 1 1 1 , , 124th Ave BE I BE 312th St 124th Ave BE I BE 312th St 1241h Ave BE I BE 312th St 124th Ave BE I BE 312th S1 1242h Ave BE I BE 3121b St 124th Ave BE I BE 312th S1 m ~ c~ m o o n ~ ~ n 71- m o N m o 316 122 51 469 335 130 54 498 0 0 0% 0 4 335 130 54 502 200 1,673 177 212 1,776 188 0 120% 13 212 1.789 188 417 95 241 510 443 101 256 541 0 0 0% 40% 0 4 4 443 101 2fi0 545 ~ N e v N ~ e u~ v ° ° m e n ~ n e % Increase = 602% Project Share = 0.7% 2 2 2 2 2 2 1241h Ave BE I BE 314th St 124th Ave BE I BE 314th S1 124th Are BE I BE 314th St 124th Ave BE ISE 314th at 124th Ave BE I BE 314th S1 124th Ave BE I BE 314th S1 n v o o m n w -TT-F-1 n F o 0 ° To 5 ffli 0 0% 0 0 5 E5.1 0 0 992 0 120% 13 1,005 0 2 0 2 1 0 0 0 0 0% 0 0 2 0 0 av ~ o n o N c 9i ~ ° ° ao o ~ ~ e % Increase = 6.1% Pmlect Share = 1.3°0 3 3 3 3 3 124th Ave BE I BE 316th 51 124th Ave BE I BE 316th S1 1241h Ave BE I BE 318th S1 124th Ave BE I BE 316th S1 124th Ave BE I BE 316111 St 124th Ave BE I BE 316th St v v o o a` ° n N v 7- F2 -FT --F F 81 ffL1 32 38 85 59 34 40 0 0% 0 59 4 40 933 1 986 3 0 120% 13 1 999 -7 F 63 63 fi7 7 3 67 0 0 0% 0 0 67 7 3 67 ~ ~ ~ m o o ua ° n n m m %Increase = 5.9% Project Share= 1.3% 4 4 4 4 4 124thAve SEISE31BthSl 124th Ave BE I BE 318th St 124th Ave BE I BE 318th S1 12411, Ave BE I BE 31 Bth S1 124th Ave BE I BE 318th S1 124th Ave BE I BE 318th 51 m e m o ~ e n ° 0 31 52 0 0 33 55 19 11 0 100% 60% 10 7 0 29 17 33 55 EJ - - 835 0 BB7 0 12 200% 21 0 920 0 0 21 89 0 0 22 95 17 6 0 100% 40% 11 4 0 28 10 22 95 % Increase = &2% Projecl Share = 2.3% Transportation Engineering Northwest, LLC Date Printed: 11412011 Page 1 of 3 e GRCC Trades Replacement Complex - Auburn, WA 2015 Future PM Peak Hour Turning Movement Forecasts Growth Rate= 1.0% - Existing Year = 2009 Future Year = 2015 Enter Exit Enter Exit 24 18 10 11 2009 Existing 2015 Without Project Trades Redistributed Trips Trades Project Distribution Trpdes Project Trips 2015 With Project s 174th Ave BE I BE 320th SI 124th Ave BE / BE 320th St 124th Ave SEISE 320th 31 124th Ave BE / BE 720th SI 124th Ave BE I BE 320th SI 124th Ava SEISE 320th St v n c? T 293 220 i8B 249 307 242 N 188 249 0 5 t-16 40% 4 0 311 ffL511 178 273 36 fi 884 61 -5 -24 80% B 868 55 264 10 147 0 19 40% 4 0 282 0 128 0 0 0 0 0 0 0 0 0 0 0 0 % Increase = 3.3% Project Share= 1.0% fi 6 6 6 6 a 132.4 Ave BE I BE 304th S1 132nd A-SE/SE 304th S1 132nd Ave SE/SE 304th S1 132nd Ave BE I BE 3041h S1 132nd Ave BE I BE 304th St- 132nd Ave BE I BE 304th S1 0 0 0 .0 0 o n I 503 g1l 779 534 E121 436 B27 0 40% 40% 4 4 536 ff121 436 B31 1.736 368 1,842 391 0 80% 4 a 4 1.850 395 462 708 490 0 751 0 0 40% 4 4 494 0 755 0 0 0 0 0 0 $ 0 0 0 0 0 % Increase = 6.1% Project Share = 0.5% 7 7 7 7 7 122nd Ave BE I BE 320th S1 122nd Ave BE I BE 320th at 122nd Ave BE I BE 320th 51 122nd Ave SE/SE 320th St 122nd Ave BE I BE 320th S1 122nd Ave BE I BE 320th 81 tv a7 H ~ a o 0 0 0 o rv ~ 293 2 1 293 311 2 1 311 0 0 401 4 4 315 ff.2 1 315 262 0 292 76 310 80% % 4 8 602 314 264 264 20 0 2B0 0 0 40% 4 4 2B4 0 284 o o ~ a o c ~ o ~ 0 0 0 0 0 0 0 % Increase = 6.1% Prolecl Share = 1 4 8 8 8 6 9 8 BE 320th SII Weal GRCC Exll BE 320th St I West GRCC Exil BE 320th 311 Weal GRCC Exit BE 320th St I Weal GRCC Exit BE 320th St I Weal GRCC Fill BE 3200h SI I Weal GRCC Exil 40% 4 4 3B3 ff 0 715 311 361 293 379 ff 129 625 657 0 40% % 4 B 659 315 129 264 137 0 272 0 0 40% 4 4 141 0 276 L o N o w o 0 0 0 0 0 0 ~ % Increase = 4.2% Prej-1 Share = 1.3% Transportation Engineenng Northwest, LLC Date Printed: 1I4I2011 Page 2 of 3 GRCC Trades Replacement Complex - Auburn, WA 2015 Future PM Peak Hour Turning Movement Forecasts Growth Rate = 1.0% Existing Year = 2009 Future Year = 2015 Enter Exit Enter Exit 24 19 10 11 2009 Existing 2015 Without Project Trades Redistributed Trips Trades Project Distribution Trpdes Project Trips 2015 With Project 9 9 9 9 9 9 BE 320th SI I Met GRCC Entrance BE 3201h St IMet GRCC Entrance SE 320th Sl l Weal GRCC Entrance BE 320th St I Weal GRCC Entranw BE 320th Si I Weal GRCC Entrance BE 320th Sl I Went GRCC En Vance T --F 169 322 201 0 0 334 0 0 40% 4 4 2:: 0 0 338 77 E~-12 495 1 513 133201 60% 0% 4 e 4 105 521 205 71833 95 179 78 101 0 0 40% 4 4 167 78 133 105 0 0 0 0 0 0 N o N o 0 0 0 ° o ° N o %Increase= 3.6% Projecl Share= 1.6% 10 10 10 10 10 10 105th PI BE 1 Lea HIII Rd BE 105th PI SEI Lea Hill Rd BE 1051h PI SEI Lea Hill Rd BE 105th PI BE l Lea HIII Rd BE 105th PI SE/Lea 1111 Rd BE 105th PI SEI Lea HIII Rd BE m m ~ m ° ° o o ° ° ,p 77 0 2 275 0 0 2 292 0 0 0% 0 4 0 ffO 2 296 0 1,740 80% 1.748 Q 0 321 0 0 340 0 0 0% 0 4 4 0 294 344 ° 'mg' a o ° m n ~ o o v a n % Increase= 6.1% Project Share= 0.5% 11 1 11 1 11 t 104th Ave BE I Lea HIII Rd BE 104th Ave BE I Lea HIII Rd BE 104th Ave BE I Lea Hill Rd BE 104th Ave BE I Lea HIII Rd BE 1041h Ave BE I Lea HIII Rd BE 104th Ave BE I Lea HIII Rd SE ,r r'l 985 272 0 26 634 1,045 269 28 673 0 0 40% 4 4 1,049 ff9L4 28 677 B87 942 2,364 5 0 40% 8D% 4 8 2,372 fi41,163 4 94 0 997 0 404 4 1239 0 1,001 r 0 0 0 0 0 o a % Increase = 6.2% Projecl Share = 0.4% Transportalion Engineering Northwest, LLC a Date Printed: 11412011 Page 3 of 3 - d , A p- pendix :C _ Roadway - Level of: Service ,Summary. Sheets` Transportation Engineering Northwest, LLC u Arterial Level of Service 7/26/2010 Arterial Level of Service: NB "124th Ave SE" 7- Arterial Flvw - Running Signer. Travel Dist : `Arterial re al Cross Street CfassSpeed Time Delay. Times ' ( mi) Seed. Y LOS-: p "124th Ave SE" 111 35. 58.0 6.8 ` 64.8 0.48 26.9 B Total III 58.0 6.8 64.8 0.48 26.9 B Arterial Level of Service: WB "124th Ave SE" 77777 Arterial ' 7Foow Running Signal: Travel Dist Arterial Arterial ross Street Class~ Speed TimeDelay . Time (s) ( m'i} Speed KLOS, 124th Ave SE. 111 32 116.9 73.5 190.4 1.04 19.6 C "SE 320th St" III 35 58.0 59.0 117.0 0.48 14.9 D Total III 174.9 132.5 307.4 1.52 17.8 D Arterial Level of Service: EB "SE 320th St" ist I Arterial Flow : Running Signal . Travel Dist Arterial Arteria Cross'Street =°`Ctass 'Speed ° Time .'Delay Time (s) '(rni) Speed a_OS; GRCC West Entrance III 35 72.8 0.9 73.7 0:71. 34.5 A "124th.A I ve SE" 111 35 33.0 21.5 54.5 027 18.1 C Total III 105.8 22.4 128.2 0.98 27.6 B Arterial Level of Service: WB "SE 320th St" Arteri aI Flow Ru Inn rig'SlgnaF Travel .Dish Arterial Arterial ross+Street Class Speed; Time Delay ,Time{s}.. (ml) - Speed. 10 GRCC West Entrance III 35 33.0 0.1 33.1 0.27 29.9 B Total III 33.0 0.1 33.1 0.27 29.9 B 2009 Existing AM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 Arterial Level of Service- ' 7/26/2010 Arterial Level of Service: NB "124th Ave SE" Arterial s Flovu Running :Sgalx Travel . Dist ArteriaF Arterial Cross'"Street ;Class Speed.- Time r Delay :Trme (s)"(rrir}`~ `Speed:. LOS "1.24th Ave SE III 35 57.2 9.3 .66.5 0.48 25.8 B Total III 57.2 9.3 66.5 0.48 25.8 B Arterial Level of Service: WB "124th Ave SE" Arteiia! Flaw ° Running Signal Travel£"' D sr t Anerral Artenat ten Street ` -:Class _ Speed =Time Delay:. Time-;(s) (mi) a Speed LOS, 124th Ave SE III . 35. 105.6 51.8 157.4 . 1.03 23.5 C "SE 320th St" III 35 57.2' 32.2 89.4 0.48 19.2 C Total.. III 162.8 84.0 2468 1.50: 21:9 C Arterial Level of Service: EB "SE 320th St" Arterial Flow Running Signal Traveler Dist `Arterial. Arterial Cross;Street Class. Speed . Time . -Delay;: Time (mr} Speed "COS GRCC West Entrance III 35 85.6 1.2 86.8 0.83: 34:6 A "124th Ave SE III 35 32.5 12.3 44.8 0.27 21.7 C Total IIF 118.1 13.5 131.6 1.10. 30.2 A Arterial Level of Service: WB "SE 320th St" Arterial ElowRunn~n-77--& gnal Travel" Dist Arterial Arterial ,Cross Street..: Class r§- : Speed: Time. Delay . Trrime (s), (mr} :Speed LOS GRCC West Entrance III 35 32.5 1.2 33.7 0.27 28.9 B Total III 32.5 1.2 33.7 0.27 28.9 B d 2009 Existing PM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 6 A1-terial Level of Service 12/16/2010 Arterial Level of Service: NB "124th Ave SE" 'Arterial 'Flow Running 'Signal~Tra"vel Dist Arterial" ' Arteria ,bross'Street'Glass Speed` ';Time , Delay Tillie (s) • (mij $peed: ~ LOS "124th Ave SE" III 35 58.0 7.7 6.5.7 0.48 26.5 B Total III 58.0 7.7 65.7 0.48 26.5 B Arterial Level of Service: WB "124th Ave SE" W W Arterial "FlowY -Running r ~Srgnal' Travel' Dist Arte an I _ Arterial , Gross Street bass 'Speed Time , .Delay Tune (s) {ini) > Speed LOS, 124th Ave SE 111 32 116.9 81.0 197.9 1.04 18.9 C "SE 320th St" III 35 58.0 94.8 152.8 0.48 11.4 E Total. III.: 174.9 175.8 350.7 1.52: 15.6. D Arterial Level of Service: EB "SE 320th St" Arterial F,.low Rurining $igrial Travel Dist .Arterial Artenaj Cros's Street Class Speed Time Delay Time (s)a Speer! LOS GRCC West Entrance III 35 72.8 1.0 73.8 .0.71 34.5`. A 1-111, "124th Ave SE" III 35 33.0 19.0 52.0 0.27 19.0 C Total III: 105.8 20.0 125.8 0.98 28.1 B Arterial Level of Service: WB "SE 320th St" Arterial Flow "Running Signal Travel "Dist Arterial. Artena ~ross'Street Class Speed Ime elay., Time (s) (rrii)k .~5peed - ;LOS, "124th Ave SE" III 25 22.0 23.1 45.1 010 8.0 F. GRCC West Entrance III 35 33.0 0.1 33.1 0.27 29.9 B Total III 55.0 .23.2 78.2 0.37. 17.2. D 2015 Without Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 x. Arterial Level of Service 7/26/2010 Arterial Level of Service: NB "124th Ave SE" Arterial eFlow ~ Running .Signal ravel-, Dist Arterial` Arferiat Cross Street Class 3Speed Time _ ,Delay.:Time (s)` (mi) .Speed. LOS "124th Ave SE" III 35 57.2 9.2 66.4 0.48 25.8 B Total III 57.2 9.2 66.4 0.48 25.8 B Arterial Level of Service: WB "124th Ave SE" Arterial Flow -Running Srgnal Travel Dist Aiteriai Arterial Delay _ Time(s) (mi) , Speed LOS 'Oross Street Class Speed ` . Time 124th Ave SE LII 35: 105.7 52.7 .158.4 1.03. 23.4 C "SE 320th St" III 35 57.2 32.2 89.4 0.48 19.2 C 84.9 247:8 1.50 21:8 C Total 162.9 Arterial Level of Service: EB "SE 320th St" Arterial Flow. Running Signal Travel bist Arterial Arteria Cross Street Class Speed Tune ~Delay~ _Trrrie,(s) .(m)~5peed LO . GRCC West Entrance: Ill 35 85.6. .1.2 86.8 0.83 34.6 A "124th Ave SE" III 35 32.5 12.3 44.8 0.27 21.7 C Total, III 118.1 13.5 131.6 1.10 302 A Arterial Level of Service: WB "SE 320th St" k P Arterial ' "F.low Running "Signs! -T avel Dtt Arterial Arkerial ~ross; Street ,-Class 'Speed Time ~Deiay Time, (S) b(rrii) Speed LOS, GRCC West Entrance 111 35 32.5 1.2 33.7 0.27 28.9 B Total III 32.5 1.2 33.7 0.27 28.9 B 2015 Without Project PM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 Arterial Level of Service 12/16/2010 Arterial Level of Service: NB "124th Ave SE" Arterial 7 Flow`' unning Signa(~ ,Travel .Dist Artenai Arterial Cross Street Class. - Speed Time Delay Time (s) (mi). Speed _ LQS "124th Ave SE" III 35 58.0 7.5 65.5 0.48 26.6 B Total III 58.0 7.5 65.5 0.48 26.6 B Arterial Level of Service: WB "124th Ave SE" -Arterial .,Flow W Running Srgnat Travel T Dist Arferral Artenai 77 ;Cross Street Class . :Speed Time, Delay . .Time (s) p, (nii), Speed I 'OS 124th Ave SE III 32 116.9 80.9 197.8 1.04 . 18.9. C "SE 320th St" III 35 58.0 76.6 134.6 0.48 12.9 E Total III 174.9 157.5 .332.4. 1.52 16.5 D Arterial Level of Service: EB "SE 320th St" _ Arterial.. µ i=low Running " Signal' Trav! 'Dist Arterial Arteria~ ;Cross Street , Class . Speed _ Time : Delay', Time (s) (rrii) :'Speed LOS, GRCC West Entrance 111 35 72.8 1.0 73.8 0.71 34.5 A "124th Ave SE" III 35 33.0 18.7 51.7 0.27 19.1 C Total III 105.8 19.7 125.5 0.98 28.2 B Arterial Level of Service: WB "SE 320th St" Arterial flow : Rurieing Signal Travel Dist _77ArterriaI A teal Gross Street N Class,-., Speed Jim Delay Tire' .(s), - (rrii)' ; .Speed LOS "124th Ave SE" III 25 22.0 23.0 45.0 0.10 8.0 F GRCC West Entrance III 35 33.0 0.1 33.1 0.27 29.9 B Total III 55.0 23.1 78.1 0.37 17.3: D 2015 With Project AM Peak Synchro 6 Report Transportation Engineering Northwest Page 1 Arterial Level of Service 12/16/2010 Arterial Level of Service: NB "124th Ave SE" ,Arterial Flow Runrn'ng `SignaTravel Dist ArterialArferraI i. dross Street Class , Speed. Time ' ~Delay, -Time (s), : , (m1) , Speed L "124th Ave SE" :III . 35 57.2 :...9.2 66.4 0..48. 25.8 B Total ..III 57.2 9.2 66.4 0.48 25.8 B Arterial Level of Service: WB "124th Ave SE" Arterial- Flow Running Signal' Traver Dist Arterial ArEeria .,Cross Street' Class, °Speed Time ,Delay. `Time (s} - (mi) Speed; LOS, 124th;Ave: SE III 35 105.7. 52.9 158.6 .1.03 23.3 C "SE 320th St" III 35 57.2 31.8 89.0 0.48 19.3 C Total III 162.9 84.7: 247.6 1.50... 219 C Arterial Level of Service: EB "SE 320th St" Arterial Elow Runn►ng Signal • " Travel )isi rterial Arteria Cross Street Class Speed Tirie Delay Time (s) _ -(mi) Speed LO.S GRCC'-West Entrance III 35 85.6 _ 1,2 86.8 0.83 34.6 A "124th Ave SE" III 35 32.5 11.9 44.4 0.27 21.9 C Total III 118:1 13:1` 131.2 1:10 30.3 A Arterial Level of Service: WB "SE 320th St" p, - . - ~ Arterial Flow ;Running,., Signa! Travel Dlst Arterial Arten.at ross;Street Class Speetl Time Delay Time;.(s) (rrii~ :w Speed LQ$ GRCC.West Entrance Ill: 35 32:5 1.3 33:8:.: 0.27: 28.8 B Total III 32.5 1.3 33.8 0.27 28.8 B 2015 With Project PM Peak Synchro 6 Report Transportation Engineering Northwest Pagel Transportation Engineering NorthWest, LLC Cl~erIVcb DATE: May 12, 2011 JUN 01 2011 CITY OFAUBURN TO: Jerry Osborn, S.M. Stemper Architects PERMIT CENTER Tom Weisweaver, GRCC FROM: Michael J. Read, P.E., Transportation Engineering Northwest, LLC RE: Green River Community College -Campus Trip Generation Study April 2011 This memorandum summarizes the results of the campus trip generation study conducted at the Green River Community College Campus (GRCC) by All Traffic Data Services, Inc., and Transportation Engineering Northwest, LLC (TENW) in April 2011, to support the entitlement process for the proposed Trades Replacement project. The following elements are documented in this memorandum: ➢ Survey methodology and types of data collected, ➢ Historical trip generation survey results collected by TENW, ➢ Neighborhood parking observations, and ➢ Site trip generation results that verify the trip generation assumptions utilized in the Trader Replacement Complex Trac Impact Study, January 3, 2011, TENW. Survey Methodology The purpose of the GRCC Trip Generation Study April 2011 is to supplement and verify previous data collection efforts performed on the site by TENW with regard to site trip generation; document average daily vehicle trip generation of the site; monitor off-campus parking that occurs within the surrounding neighborhood streets; and respond to comments of Auburn Public Works Department (received on March 15, 2011). To complete these efforts, a combination of machine and video data collection devices were located at key driveways and intersections that serve the campus by All Traffic Data Services, Inc. Machine driveway counts were collected during the entire week of April 24 through April 29, 2011, while a.m. and p.m. peak hour counts were collected on Wednesday April 27, 2011. This period was selected as the College was in full session during this survey interval. During the collection of peak hour turning movement counts at all key driveways, simultaneous observations were made within 4 separate "neighborhood catchment" areas by TENW to record off-campus parking activities. In addition to observations of on-street parking within neighborhood streets, where appropriate, pedestrians walking toward campus within these catchment areas were interviewed briefly to determine if they lived within the neighborhood or parked outside of the "field of view" of observers. If pedestrians reported that they parked further off-site and walked to campus, observers asked which street they parked along and confirmed the location. During the course of the survey, approximately 10 total pedestrians were informally surveyed in the field. www.tenw.com PO Box 65254 • Seattle, WA 98155 Office/Fax (206) 361-7333 ♦ Toll Free (888) 220-7333 1 Green River Community College' 2011 Campus Trip Generation Study May 12, 2011 Page 2 Figure 1 highlights the location of machine counts, video turning movement counts, and neighborhood parking catchment areas utilized during these survey periods. Given the consistent findings of peak hour traffic volumes and the overall lack of off-campus parking counts, no additional observation days were warranted. Intersection turning movement counts as well as driveway counts were collected at all campus site access driveways, including the existing gravel public parking lot within the adjacent City park site. Campus Trip Generation Summary This section summarizes the trip generation survey results of the trip generation counts collected by All Traffic Data Services, Inc. in April 2011. Attachment A contains a detailed summary of all time periods counted and survey results tabulated by driveway and intersection location. Table 1 highlights the a.m. and p.m. peak hour survey results collected on behalf of GRCC by TENW in 2003, 2010, and in 2011. As shown, the observed trip generation rates are indexed to gross building areas available to the campus at the time of each survey. Although overall trip generation of the campus increased between 2003 and 2010, the campus-wide trip generation rate has decreased slightly over this period as building floor area has increased. The trip generation study conducted in April in 2011 indicates a slightly lower trip generation rate than those just taken during fall quarter of 2010, although gross building floor area has remained constant. This reflects the relative nature of student loads that fluctuate throughout the course of each year, typically peaking during each Fall quarter. Based on these findings, vehicle trip generation rates used in the Trades Replacement Complex Traffic Impact Study, January 3, 2011, TENW, are considered to be appropriate campus trip generation rates to apply to increased campus development at GRCC. Table 1: Historical Trip Generation Rates at GRCC Indexed to Gross Buildin Areas One-Way Gross Campus Trips per Time Period Survey Period Vehicle Trips S uare Footage' 1,000 sf GFLA AM Peak Hour - Fall Quarter October 2003 1,514 583,882 2.59 PM Peak Hour - Fall Quarter October 2003 775 583,882 1.33 AM Peak Hour - Fall Quarter October 2010 1,589 637,627 2.49 PM Peak Hour - Fall Quarter October 2010 816 637,627 1.28 AM Peak Hour - Spring Quarter Aril 2011 1,347 637,627 2.11 PM Peak Hour - Spring Quarter April 2011 796 637,627 1.25 Source: Observed vehicle trip generation rates of GRCC, October 2003 and October 2010, as documented in the GRCC 2010 Campus Parking and Utilization Study, TENW, December 22, 2010, and additional Campus Trip Generation Study - April 2011. 1 - Gross Campus Square Footage is shown as gross floor area of buildings in use during survey period. Table 2 compares historical trip generation rates with the number of students (as requested by Auburn Public Works), rather than gross floor area of buildings at the main GRCC campus. As shown, a.m. and p.m. peak hour trip generation per student populations on campus during each survey period has averaged 0.20 trips per FTE student during the a.m. peak hour, and 0.11 trips per student during the p.m. peak hour during the historical survey periods. However, during the most recent survey period, the trip generation rate per total student headcount was lower than previous surveys, with an observed trip generation rate of 0.18 trips per student during the a.m. peak hour. Transportation Engineering Northwest, LLC PO Box 65254 • Seattle, WA 98155 Office/Fax (206) 361-7333 ♦ Toll Free (888) 220-7333 d - . n i r 0 L < < L n ~ L a L I T d r _ X 'fl d w0 O =,a K G L L NO1O P 3a t Z 4 ~,r 0 _ o D 3 - E. ::E z u o 'D 0 >T co C r N (l Daily Machine Count Location N 14 w o W W AM/PM Turning Movement Count Location ~ n d~ E~ Catchment Area Boundary for Neighborhood Parking Observations (Not is Scate) -1 IIn Green River C 3 G)a Transportation Figure Community College Engineering Campus Trip Generation Study = n Northwest, LLC Monitoring Locations N Campus Trip Generalion.Study CrQ CA L C April 2011 eD CL W -r K N Green River Community College ' 2011 Campus Trip Generation Study May 12, 2011 Page 4 Table 2: Historical Trip Generation Rates at GRCC Indexed to Student Headcount One-Way Total Student Trips per Time Period Survey Period Vehicle Trips Headcount' Student AM Peak Hour- Fall Quarter October 2003 1,514 7,797 0.22 PM Peak Hour - Fall Quarter October 2003 775 7,797 0.11 AM Peak Hour- Fall Quarter October 2010 1,589 7,637 0.21 PM Peak Hour - Fall Quarter October 2010 816 7,637 0.11 AM Peak Hour - Spring Quarter Aril 2011 1,347 7,471 0.18 PM Peak Hour -Spring Quarter Aril 2011 796 7,471 0.11 Source: Observed vehicle trip generation rates of GRCC, October 2003 and October 2010, as documented in the GRCC 2010 Campus Parking and Utilization Study, TENW, December 22, 2010, and additional Campus Trip Generation Study - April 2011. 1 - Source GRCC Research and Planning Department, May 2011. While vehicle trip generation of the GRCC campus could be based either on gross floor area or student head count, the more conservative approach was taken by using the trip generation rate per 1,000 square feet of gross floor area when evaluating the Trades Replacement Complex. Campus Daily Trip Generation Rates In addition to collection of comprehensive traffic counts during peak morning and afternoon periods of adjacent street traffic, campus daily trip generation rates on typical weekdays were also collected. As noted previously, Attachment 1 contains a detailed 15 minute summary of each driveway location over the entire 5-day survey period. As shown in Table 2, the average weekday daily trip (AWDT) generation of the existing GRCC campus is approximately 11,500 AWDT. Table 2: Aril 2011 AWDT of GRCC Main Campus Da Dail Traffic Count Monday (April 25, 2011) 11,960 Tuesday (April 26, 2011) 12,073 Wednesday (April 27, 2011) 12,145 Thursday (April 28, 2011) 12,096 Friday (April 29, 2011) 9,256 Average Weekday Dail Traffic 11,506 Neighborhood Parking Observations Observations of off-campus parking within the surrounding vicinity neighborhood streets were undertaken by TENW on Wednesday April 27, 2011. Given the limited number of vehicles parking within vicinity neighborhood streets, no additional observation days were considered to be necessary. Observations began at 7:00 a.m. and ended at 9:30 a.m., and then started again in the afternoon at 2:00 p.m. until 5:00 p.m., when all but one student vehicle remained on vicinity streets. As noted previously, four separate catchment areas were established (see Figure 1) to observe, track, and identify where on-street parking occurred due to students attending GRCC. Figure 2 identifies specific locations on vicinity streets where student parking was observed. Transportation Engineering Northwest, LLC PO Box 65254 • Seattle, WA 98155 Office/Fax (206) 361-7333 ♦ Toll Free (888) 220-7333 r,. 4 pig 6 0 a ` m , T ~ ~ v moo, a x O W , O (J1 rto ► 7 q Y A ~o r N n r O V N w O W Street Frontages Observed for Off-Campus Parking n r~ (Not to Scats) ~n Green River n 3 Transportation Figure 2 Community College 3 Engineering Locations of Off Campus Parking - NorthWest, LLC in Vicinity Neighborhood Streets Campus TO Generation Study ,w N L S April 2011 ro O io to rho i 1 > - Green River Community College - - 2011 Campus Trip Generation Study May 12, 2011 Page 6 Table 3 summarizes by time of day the arrival/departures of off-campus parking within neighborhood streets. As shown, total vehicles observed parking within vicinity neighborhood streets and walking to the GRCC campus included five within Catchment Area 1; seven within Catchment Area 2; one in Catchment Area 3; and seven in Catchment Area 4:. In total, 20 vehicles throughout the course of the.survey day were observed parking within vicinity neighborhood streets. Based on.these surveys, no significant levels of off-campus parking occur within vicinity neighborhood residential streets: Off-campus parking does occur on a very limited basis, but this does not cause undue demand for parking within neighboring residential streets or create hazards for vehicle or pedestrian flow within these local streets. Table 3: Neighborhood parking Observations Catchment Area 1 Vehicle Arrival Vehicle Departure Total Persons 7:45 am - 8:00 am 1 1 8:30'am 8:45 am 1 1 8:45 am - 9:00 am ` 1 1 9:30 am - 2:00 pm 2 1 n/a 2:15 pm - 2:30 pm 2 2 2:30 pm - 2:45 pm . 1 1 2:45 pm - 3:00 pm 1 3 Total Vehicles Parked In Area 1 5 5 9 Catchment Area 2 Vehicle Arrival Vehicle Departure Total Persons 7:45 am-8:00 am 2 3 8:30 am - 8:45 am 2 2 8:45 am - 9:00 am 1 1 9:30 am - 2:00 pm 3 2 n/a 2:30 pm - 2:45 pm. 1 1 2:45 pm - 3:00 pm 2 2 Total Vehicles Parked In Area 2 7 6 9 f Catchment Area 3 Vehicle Arrival Vehicle Departure Total Persons 7:45 am - 8:00 am 1 1 8:45 am-9:00 am 1 1 Total Vehicles Parked In Area 3 1 1 2 Catchment Area 4 Vehicle Arrival Vehicle Departure Total Persons. 7:45 am - 8:00 am 3 3 8:45 am - 9:00 am 1 2 -9:30 am - 2:00 pm 2 1 n/a e 2:30 pm - 2:45 pm 1 1 2:45 pm - 3:00 pm 2 2 .3:00 pm - 3:15 pm 2 2 3:30 pm - 3:40 pm 1 1 Total Vehicles Parked In Area 4 7 6 11 Total Vehicles Parked in Vicinity Neighborhoods: 20 vehicles throughout survey day .'Transportation Engineering Northwest; LLC PO Bok 65254 *Seattle, WA 98155 Office/Faz (206)-361-7333 ♦ Toll Free (888),220-7333 Appendix A Detailed Summaries of Traffic Counts -for Campus Trip.. Generation Study-. April 20_l l- c i I GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320t1 Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB Date Time NB Date Time EB WB Hourly volume 4/25/2011 12:00 AM 1 4/25/2011 12:00 AM 2 4/25/2011 12:00 AM 1 4/25/2011 12:00 AM 1 4/25/2011 12:00 AM 3 2 4/25/2011 12:15 AM 0 4/25/2011 12:15 AM 0 4125/2011 12:15 AM 0 4/25/2011 12:15 AM 0 4125/2011 12:15 AM 1 2 4/25/2011 12:30 AM 0 4/25/2011 12:30 AM 2 4/25/2011 12:30 AM 0 4125/2011 12:30 AM 0 4125/2011 12:30 AM 0 0 4125/2011 12:45 AM 0 4/2512011 12:45 AM 1 4/25/2011 12:45 AM 0 4/25/2011 12:45 AM 0 4/25/2011 12:45 AM 1 0 17 4/25/2011 01:00 AM 0 4/25/2011 01:00 AM 0 4/2512011 01:00 AM 0 4/2512011 01:00 AM 0 4/25/2011 01:00 AM 1 2 10 4/25/2011 01:15 AM 0 4/25/2011 01:15 AM 0 4/25/2011 01:15 AM 0 4/2512011 01:15 AM 0 4/25/2011 01:15 AM 0 0 7 4/25/2011 01:30 AM 0 4/2512011 01:30 AM 0 4/25/2011 01:30 AM 0 4/25/2011 01:30 AM 0 4/25/2011 01:30 AM 0 1 6 4/25/2011 01:45 AM 0 4/25/2011 01:45 AM 0 4/25/2011 01:45 AM 0 4/25/2011 01:45 AM 0 4/2512011 01:45 AM 0 0 4 4/2512011 02:00 AM 0 4/2512011 02:00 AM 1 4/25/2011 02:00 AM 0 4125/2011 02:00 AM 0 4/25/2011 02:00 AM 0 1 3 4/25/2011 02:15 AM 0 4/25/2011 02:15 AM 1 4/25/2011 02:15 AM 0 4/2512011 02:15 AM 0 4/25/2011 02:15 AM 0 0 4 4/25/2011 02:30 AM 0 4125/2011 02:30 AM 0 4/25/2011 02:30 AM 0 4/25/2011 02:30 AM 0 4/25/2011 02:30 AM 1 1 5 4/25/2011 02:45 AM 0 4/2512011 02:45 AM 0 4125/2011 02:45 AM 0 4/25/2011 02:45 AM 0 4/25/2011 02:45 AM 0 0 5 4/25/2011 03:00 AM 0 4/25/2011 03:00 AM 0 4/25/2011 03:00 AM 0 4/2512011 03:00 AM 0 4/25/2011 03:00 AM 0 0 3 4/25/2011 03:15 AM 0 4/25/2011 03:15 AM 0 4/25/2011 03:15 AM 0 4/25/2011 03:15 AM 0 4/25/2011 03:15 AM 1 0 3 4/25/2011 03:30 AM 0 4/25/2011 03:30 AM 0 4/25/2011 03:30 AM 0 4/25/2011 03:30 AM 0 4/25/2011 03:30 AM 0 0 1 4/25/2011 03:45 AM 0 4/25/2011 03:45 AM 0 4/25/2011 03:45 AM 0 4/25/2011 03:45 AM 0 4/25/2011 03:45 AM 0 0 1 4/25/2011 04:00 AM 1 4/2512011 04:00 AM 2 4/25/2011 04:00 AM 0 4125/2011 04:00 AM 0 4/25/2011 04:00 AM 1 0 5 4/25/2011 04:15 AM 0 4/25/2011 04:15 AM 0 4/25/2011 04:15 AM 0 4/2512011 04:15 AM 0 4/25/2011 04:15 AM 1 1 6 4/25/2011 04:30 AM 1 4/2512011 04:30 AM 0 4/25/2011- 04:30 AM 0 4/25/2011 04:30 AM 0 4/25/2011 04:30 AM 1 0 8 4/25/2011 04:45 AM 0 4/25/2011 04:45 AM 1 4/25/2011 04:45 AM 0 4/25/2011 04:45 AM '0 4/25/2011 04:45 AM 1 0 10 4/25/2011 05:00 AM 1 4/25/2011 05:00 AM 0 4/25/2011 05:00 AM 0 4/25/2011 05:00 AM 0 4/25/2011 05:00 AM 2 0 9 4/25/2011 05:15 AM 3 4/25/2011 05:15 AM 0 4/25/2011 05:15 AM 0 4/25/2011 05:15 AM 0 4/25/2011 05:15 AM 2 0 12 4/25/2011 05:30 AM 1 4/25/2011 05:30 AM 0 4/25/2011 05:30 AM 0 4/25/2011 05:30 AM 0 4/25/2011 05:30 AM 5 0 16 4/25/2011 05:45 AM 1 4/2512011 05:45 AM 0 4/25/2011 05:45 AM 0 4/25/2011 05:45 AM 0 4/25/2011 05:45 AM 10 1 26 4/25/2011 06:00 AM 12 4125/2011 06:00 AM 1 4/25/2011 06:00 AM 0 4/25/2011 06:00 AM 0 4/25/2011 06:00 AM 7 0 43 4/25/2011 06:15 AM 28 4/25/2011 06:15 AM 1 4/25/2011 06:15 AM 0 4/25/2011 06:15 AM 0 4/25/2011 06:15 AM 24 2 93 4/25/2011 06:30 AM 65 4/25/2011 06:30 AM 2 4/25/2011 06:30 AM 3 4/25/2011 06:30 AM 1 4/25/2011 06:30 AM 44 2 204 4/25/2011 06:45 AM 107 4/25/2011 06:45 AM 6 4/25/2011 06:45 AM 1 4/25/2011 06:45 AM 1 4/25/2011 06:45 AM 98 2 407 4/25/2011 07:00 AM 107 4/25/2011 07:00 AM 4 4/25/2011 07:00 AM 0 4/25/2011 07:00 AM 1 4/2512011 07:00 AM 58 3 560 4/25/2011 07:15 AM 149 4/25/2011 07:15 AM' 11 4/25/2011 07:15 AM 2 4/2512011 07:15 AM 1 4/25/2011 07:15 AM 108 3 779 4/25/2011 07:30 AM 169 4/25/2011 07:30 AM 19 4/2512011 07:30 AM 5 4/25/2011 07:30 AM 6 4/25/2011 07:30 AM 148 13 1022 4/25/2011 07:45 AM 194 4/25/2011 07:45 AM 37 4/25/2011 07:45 AM 4 4/25/2011 07:45 AM 6 4/25/2011 07:45 AM 161 20 1229 4/25/2011 08:00 AM 74 4/25/2011 08:00 AM 25 4/25/2011 08:00 AM 8 4/25/2011 08:00 AM 5 4/25/2011 08:00 AM 87 10 1265 4/25/2011 08:15 AM 71 4/25/2011 08:15 AM 17 4/25/2011 08:15 AM 3 4/25/2011 08:15 AM 5 4125/2011 08:15 AM 57 5 1149 4/25/2011 08:30 AM 84 4/25/2011 08:30 AM 14 4/25/2011 08:30 AM 5 4/25/2011 08:30 AM 5 4/25/2011 08:30 AM 111 22 1030 4/2512011 08:45 AM 116 4/25/2011 08:45 AM 56 4125/2011 08:45 AM 6 4/25/2011 08:45 AM 6 4/25/2011 08:45 AM 110 40 942 4/25/2011 09:00 AM 60 4/25/2011 09:00 AM 58 4/25/2011 09:00 AM 5 4125/2011 09:00 AM 6 4/25/2011 09:00 AM 52 38 952 4/25/2011 09:15 AM 31 4/25/2011 09:15 AM 12 4/25/2011 09:15 AM 6 4/25/2011 09:15 AM 4 4/25/2011 09:15 AM 36 18 901 4/25/2011 09:30 AM 61 4/25/2011 09:30 AM 20 4/25/2011 09:30 AM 3 4/25/2011 09:30 AM 5 4/25/2011 09:30 AM 51 15 815 4/25/2011 09:45 AM 92 4125/2011 09:45 AM 83 4/25/2011 09:45 AM 6 4/25/2011 09:45 AM 6 4/25/2011 09:45 AM 55 91 814 4/25/2011 10:00 AM 54 4/25/2011 10:00 AM 78 4125/2011 10:00 AM 3 4/25/2011 10:00 AM 4 4/25/2011 10:00 AM 36 103 873 4/25/2011 10:15 AM 35 4/25/2011 10:15 AM 31 4125/2011 10:15 AM 4 4/25/2011 10:15 AM 5 4/25/2011 10:15 AM 29 24 894 4/25/2011 10:30 AM 64 4/25/2011 10:30 AM 28 4/25/2011 10:30 AM 6 4/25/2011 10:30 AM 4 4/25/2011 10:30 AM 50 27 918 4/25/2011 10:45 AM 76 4/25/2011 10:45 AM 92 4/25/2011 10:45 AM 5 4/25/2011 10:45 AM 4 4/25/2011 10:45 AM 48 69 879 4/25/2011 11:00 AM 40 4/25/2011 11:00 AM 80 4/25/2011 11:00 AM 5 4/25/2011 11:00 AM 6 4/25/2011 11:00 AM 28 74 834 4125/2011 11:15 AM 46 4/25/2011 11:15 AM 35 4/25/2011 11:15 AM 5 4/25/2011 '111:15 AM 5 4/25/2011 11:15 AM 29 47 873 4/25/2011 11:30 AM 45 4/25/2011 11:30 AM 73 4/25/2011 11:30 AM 3 4125/2011 11:30 AM 4 4/25/2011 11:30 AM 41 48 908 4125/2011 11:45 AM 61 4/25/2011 11:45 AM 85 4/25/2011 11:45 AM 5 4/25/2011 11:45 AM 5 4125/2011 11:45 AM 61 85 916 4/25/2011 12:00 PM 49 4/25/2011 12:00 PM 132 4/25/2011 12:00 PM 3 4/25/2011 12:00 PM 2 4/25/2011 12:00 PM 32 150 1051 4/25/2011 12:15 PM 52 4/25/2011 12:15 PM 44 4/25/2011 12:15 PM 3 4/25/2011 12:15 PM 6 4/25/2011 12:15 PM 36 55 1080 4/25/2011 12:30 PM 85 4/25/2011 12:30 PM 56 4/25/2011 12:30 PM 5 4/25/2011 12:30 PM 5 4/25/2011 12:30 PM 58 56 1131 4/25/2011 12:45 PM 98 4/25/2011 12:45 PM 76 4/25/2011 12:45 PM 6 4/25/2011 12:45 PM 3 4/25/2011 12:45 PM 76 39 1127 - 4/25/2011 01:00 PM 32 4/25/2011 01:00 PM 69 4125/2011 01:00 PM 3 4/25/2011 01:00 PM 3 4/25/2011 01:00 PM 21 70 957 Sour- 411 Traffic Data Services, Inc. Prepared by Michael 0-ad - TENW 5/9/2011 page A-1 GRCC Campus Trip Generation Study -April 2011 Daily Traffic Machine Counts at Site Driveways V Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320ti Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB _ Date Time SB Date Time NB Date Time EB W B Hourly Volume 4/2512011 01:15 PM 20 4125/2011 01:15 PM 40 4/2512011 01:15 PM 4 4/25/2011 01:15 PM 3 4125/2011 01:15 PM 18 42 888 4125/2011 01:30 PM 31 4/2512011 01:30 PM 44 4/25/2011 01:30 PM 6 4/25/2011 01:30 PM 6 4/2512011 01:30 PM 33 39 782 4/25/2011 01:45 PM 43 4/2512011 01:45 PM 88 4/25/2011 01:45 PM 6 4/25/2011 01:45 PM 3 4/25/2011 01:45 PM 32 72 728 4/25/2011 02:00 PM 32 4/25/2011 02:00 PM 108 4/25/2011 02:00 PM 4 4125/2011 02:00 PM 4 4125/2011 02:00 PM 20 100 798 4/25/2011 02:15 PM 25 4/25/2011 02:15 PM 65 4/25/2011 02:15 PM 3 4/25/2011 02:15 PM 4 4/25/2011 02:15 PM 21 60 849 4/25/2011 02:30 PM 32 4/25/2011 02:30 PM 81 4/2512011 02:30 PM 1 4/25/2011 02:30 PM 3 4/25/2011 02:30 PM 23 53 883 4/25/2011 02:45 PM 22 4125/2011 02:45 PM 72 4/25/2011 02:45 PM 2 4125/2011 02:45 PM 2 4/25/2011 02:45 PM 38 46 821 4/25/2011 03:00 PM 31 4125/2011 03:00 PM 64 4/25/2011 03:00 PM 1 4/25/2011 03:00 PM 2 4/25/2011 03:00 PM 25 65 741 4125/2011 03:15 PM 30 4/25/2011 03:15 PM 66 4/25/2011 03:15 PM 2 4125/2011 03:15 PM 3 4/25/2011 03:15 PM 28 57 749 4/25/2011 03:30 PM 34 4/25/2011 03:30 PM 73 4/25/2011 03:30 PM 2 4/25/2011 03:30 PM 1 4125/2011 03:30 PM 35 47 748 4/25/2011 03:45 PM 40 4/25/2011 03:45 PM 44 4/2512011 03:45 PM 3 4/25/2011 03:45 PM 2 4/25/2011 03:45 PM 41 34 730 4/2512011 04:00 PM 28 4/25/2011 04:00 PM 63 4/25/2011 04:00 PM 2 4/25/2011 04:00 PM 0 4/25/2011 04:00 PM 33 40 708 4/25/2011 04:15 PM 32 4125/2011 04:15 PM 43 4125/2011 04:15 PM 0 4125/2011 04:15 PM 2 4/25/2011 04:15 PM 28 51 678 4/25/2011 04:30 PM 32 4/25/2011 04:30 PM 43 4125/2011 04:30 PM 1 4/25/2011 04:30 PM 3 4/25/2011 04:30 PM 26 44 635 4125/2011 04:45 PM 31 4125/2011 04:45 PM 65 4/25/2011 04:45 PM 2 4125/2011 04:45 PM 1 4/25/2011 04:45 PM 29 73 672 4/25/2011 05:00 PM 34 4/25/2011 05:00 PM 50 4/25/2011 05:00 PM 2 4125/2011 05:00 PM 2 4/25/2011 05:00 PM 32 59 685 4/25/2011 05:15 PM 51 4/25/2011 05:15 PM 41 4/25/2011 05:15 PM 1 4125/2011 05:15 PM 1 4125/2011 05:15 PM 19 45 687 4/25/2011 05:30 PM 46 412512011 05:30 PM 34 4/25/2011 05:30 PM 0 4/25/2011 05:30 PM 0 4/25/2011 05:30 PM 19 29 666 4/25/2011 05:45 PM 98 4125/2011 05:45 PM 50 4/2512011 05:45 PM 3 4/25/2011 05:45 PM 3 4125/2011 05:45 PM 45 39 703 4/25/2011 06:00 PM 62 4/2512011 06:00 PM 47 4/2512011 06:00 PM 0 4/25/2011 06:00 PM 1 4125/2011 06:00 PM 33 29 696 412512011 06:15 PM 37 4/25/2011 06:15 PM 41 4125/2011 06:15 PM 1 4/25/2011 06:15 PM 0 4125/2011 06:15 PM 36 40 693 4125/2011 06:30 PM 41 4/25/2011 06:30 PM 34 4125/2011 06:30 PM 1 4/25/2011 06:30 PM 1 4/25/2011 06:30 PM 21 23 686 4/25/2011 06:45 PM 51 4125/2011 06:45 PM 31 4125/2011 06:45 PM 3 4125/2011 06:45 PM 3 4/25/2011 06:45 PM 25 15 576 4/25/2011 07:00 PM 34 4125/2011 07:00 PM 28 4125/2011 07:00 PM 0 4125/2011 07:00 PM 0 4/25/2011 07:00 PM 43 32 541 4/25/2011 07:15 PM 24 4/25/2011 07:15 PM 27 4/2512011 07:15 PM 2 4125/2011 07:15 PM 1 4/25/2011 07:15 PM 18 30 488 4125/2011 07:30 PM 5 4125/2011 07:30 PM 40 4/25/2011 07:30 PM 1 4125/2011 07:30 PM 1 4/25/2011 07:30 PM 12 32 458 4/25/2011 07:45 PM 6 4/25/2011 07:45 PM 18 4/25/2011 07:45 PM 1 4/25/2011 07:45 PM 2 4/25/2011 07:45 PM 9 28 394 4125/2011 08:00 PM 10 4/25/2011 08:00 PM 27 4/2512011 08:00 PM 1 4/25/2011 08:00 PM 1 4125/2011 08:00 PM 12 9 317 4/25/2011 08:15 PM 4 4/25/2011 08:15 PM 28 4125/2011 08:15 PM 1 4125/2011 08:15 PM 1 4/25/2011 08:15 PM 6 40 295 4/2512011 08:30 PM 10 4125/2011 08:30 PM 49 4/25/2011 08:30 PM 1 ' 4/25/2011 08:30 PM 1 4/25/2011 08:30 PM 8 34 307 412512011 08:45 PM 11 4/25/2011 08:45 PM 124 4/25/2011 08:45 PM 4 4/25/2011 08:45 PM 4 4/25/2011 08:45 PM 14 38 438 4/25/2011 09:00 PM 2 4/25/2011 09:00 PM 53 4/25/2011 09:00 PM 2 4/25/2011 09:00 PM 3 4/25/2011 09:00 PM 7 38 483 4/25/2011 09:15 PM 4 4/25/2011 09:15 PM 55 4/25/2011 09:15 PM 1 4/2512011 09:15 PM 3 4/2512011 09:15 PM 9 32 507 4/25/2011 09:30 PM 4 4125/2011 09:30 PM 52 4/2512011 09:30 PM 2 4/2512011 09:30 PM 2 4/2512011 09:30 PM 9 47 520 4/25/2011 09:45 PM 1 4/25/2011 09:45 PM 24 4/25/2011 09:45 PM 2 4/25/2011 09:45 PM 1 4/25/2011 09:45 PM 4 14 371 4/25/2011 10:00 PM 6 4/25/2011 10:00 PM 18 4/25/2011 10:00 PM 3 4125/2011 10:00 PM 2 4/2512011 10:00 PM 6 15 316 4/25/2011 10:15 PM 7 4/2512011 10:15 PM 4 4/25/2011 10:15 PM 1 4/25/2011 10:15 PM 2 4/2512011 10:15 PM 12 15 253 4125/2011 10:30 PM 3 4/25/2011 10:30 PM 3 4/25/2011 10:30 PM 0 4/25/2011 10:30 PM 1 4/25/2011 10:30 PM 5 4 153 4/25/2011 10:45 PM 1 4125/2011 10:45 PM 2 4/25/2011 10:45 PM 0 4/25/2011 10:45 PM 0 4/25/2011 10:45 PM 5 4 119 4/25/2011 11:00 PM 0 4125/2011 11:00 PM 1 4/2512011 11:00 PM 0 4/25/2011 11:00 PM 0 4/25/2011 11:00 PM 3 6 79 4/2512011 11:15 PM 0 4125/2011 11:15 PM 3 4/25/2011 11:15 PM 0 4/25/2011 11:15 PM 0 4/2512011 11:15 PM 1 2 44 4/25/2011 11:30 PM 2 4/25/2011 11:30 PM 4 4/25/2011 11:30 PM 0 4125/2011 11:30 PM 0 4/25/2011 11:30 PM 1 1 4/25/2011 11:45 PM 1 4/25/2011 11:45 PM 1 4/25/2011 11:45 PM 0 4/25/2011 11:45 PM 0 4/2512011 11:45 PM 2 3 412512011 3184 3103 186 190 2629 2668 Total Site ADT 11,960 Source: All Traffic Data Services, Inc. Prepared by Michael Read - TENW 5/9/2011 Page A-2 GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320t1 Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB, Date Time NB Date Time EB WB Hourly Volume 4/26/2011 12:00 AM 1 4/26/2011 12:00 AM 1 4/26/2011 12:00 AM 0 4126/2011 12:00 AM 0 4/26/2011 12:00 AM 0 5 4/26/2011 12:15 AM 0 4/26/2011 12:15 AM 0 4/26/2011 12:15 AM 0 4/26/2011 12:15 AM 0 4126/2011 12:15 AM 3 7 4/26/2011 12:30 AM 0 4/2612011 12:30 AM 3 4/26/2011 12:30 AM 0 4126/2011 12:30 AM 0 4/26/2011 12:30 AM 1 0 4/26/2011 12:45 AM 0 4/26/2011 12:45 AM 0 4/26/2011 12:45 AM 0 4/26/2011 12:45 AM 0 4/26/2011 12:45 AM 1 2 24 4/26/2011 01:00 AM 0 4/26/2011 01:00 AM 3 4/26/2011 01:00 AM 0 4/26/2011 01:00 AM 0 4/26/2011 01:00 AM 2 1 23 4/2612011 01:15 AM 3 4/26/2011 01:15 AM 1 4/26/2011 01:15 AM 0 4/26/2011 01:15 AM 0 4/26/2011 01:15 AM 1 1 19 4/26/2011 01:30 AM 0 4/26/2011 01:30 AM 3 4/26/2011 01:30 AM 0 4/26/2011 01:30 AM 0 4/26/2011 01:30 AM 1 0 19 4/26/2011 01:45 AM 0 4/26/2011 01:45 AM 2 4/26/2011 01:45 AM 0 4/26/2011 01:45 AM 0 4/26/2011 01:45 AM 1 1 20 4/26/2011 02:00 AM 0 4126/2011 02:00 AM 0 4/26/2011 02:00 AM 0 4/26/2011 02:00 AM 0 4/26/2011 02:00 AM 0 1 15 4/26/2011 02:15 AM 0 4/2612011 02:15 AM 3 4/26/2011 02:15 AM 0 4126/2011 02:15 AM 0 4/26/2011 02:15 AM 0 0 12 4/26/2011 02:30 AM 0 4/26/2011 02:30 AM 0 4/26/2011 02:30 AM 0 4126/2011 02:30 AM 0 4/26/2011 02:30 AM 0 0 8 4/26/2011 02:45 AM 0 4/26/2011 02:45 AM 0 4/26/2011 02:45 AM 0 4/26/2011 02:45 AM 0 4/26/2011 02:45 AM 0 0 4 412612011 03:00 AM 0 4/26/2011 03:00 AM 0 4/26/2011 03:00 AM 0 4126/2011 03:00 AM 0 4/26/2011 03:00 AM 2 0 5 4/2612011 03:15 AM 0 4/26/2011 03:15 AM 0 4/26/2011 03:15 AM 0 4/26/2011 03:15 AM 0 4/26/2011 03:15 AM 0 0 2 4/26/2011 03:30 AM 0 4/26/2011 03:30 AM 0 4/26/2011 03:30 AM 0 4/26/2011 03:30 AM 0 4/2612011 03:30 AM 0 0 2 4/26/2011 03:45 AM 0 4126/2011 03:45 AM 0 4/26/2011 03:45 AM 0 4126/2011 03:45 AM 1 4/26/2011 03:45 AM 0 2 5 4/26/2011 04:00 AM 0 4/2612011 04:00 AM 0 4/26/2011 04:00 AM 0 4126/2011 04:00 AM 0 4/26/2011 04:00 AM 3 1 7 4/2612011 04:15 AM 0 4/26/2011 04:15 AM 1 4/26/2011 04:15 AM 0 4/26/2011 04:15 AM 0 4/26/2011 04:15 AM 0 0 8 4/26/2011 04:30 AM 1 4/26/2011 04:30 AM 0 4/26/2011 04:30 AM 0 4/26/2011 04:30 AM 0 4/26/2011 04:30 AM 0 0 9 4/26/2011 04:45 AM 1 4/26/2011 04:45 AM 1 4/26/2011 04:45 AM 0 4/26/2011 04:45 AM 0 4/26/2011 04:45 AM 2 0 10 4/26/2011 05:00 AM 1 4126/2011 05:00 AM 1 4/26/2011 05:00 AM 0 4/26/2011 05:00 AM 0 4/26/2011 05:00 AM 2 0 10 4/26/2011 05:15 AM 1 4/26/2011 05:15 AM 0 4/26/2011 05:15 AM 0 4126/2011 05:15 AM 0 4/26/2011 05:15 AM 3 0 13 4/26/2011 05:30 AM 1 4/26/2011 05:30 AM 0 4/26/2011 05:30 AM 0 4/26/2011 05:30 AM 0 4/26/2011 05:30 AM 4 1 18 4/2612011 05:45 AM 3 4/26/2011 05:45 AM 0 4/26/2011 05:45 AM 1 4/26/2011 05:45 AM 0 4/26/2011 05:45 AM 9 1 28 4/2612011 06:00 AM 8 4/26/2011 06:00 AM 0 4/2612011 06:00 AM 0 412612011 06:00 AM 0 4/26/2011 06:00 AM 12 0 44 4/26/2011 06:15 AM 22 4/26/2011 06:15 AM 2 4/26/2011 06:15 AM 0 4/26/2011 06:15 AM 0 4/26/2011 06:15 AM 23 2 89 4/26/2011 06:30 AM 59 4/26/2011 06:30 AM 2 4/26/2011 06:30 AM 0 4/26/2011 06:30 AM 0 4/26/2011 06:30 AM 33 4 181 4/26/2011 06:45 AM 112 4/26/2011 06:45 AM 9 4/26/2011 06:45 AM 2 4/2612011 06:45 AM 2 4/26/2011 06:45 AM 88 9 389 4/26/2011 07:00 AM 103 4126/2011 07:00 AM 3 4/26/2011 07:00 AM 1 4/26/2011 07:00 AM 1 4126/2011 07:00 AM 70 8 555 412612011 07:15 AM 133 4/2612011 07:15 AM 11 4/26/2011 07:15 AM 1 4/26/2011 07:15 AM 0 4/26/2011 07:15 AM 87 12 750 4/26/2011 07:30 AM 189 4/26/2011 07:30 AM 12 4/26/2011 07:30 AM 5 4/26/2011 07:30 AM 2 4/26/2011 07:30 AM 136 10 1006 4126/2011 07:45 AM 220 4/2612011 07:45 AM 31 4/2612011 07:45 AM 3 4126/2011 07:45 AM 5 4/26/2011 07:45 AM 177 15 1235 4/2612011 08:00 AM 55 4/26/2011 08:00 AM 34 4/26/2011 08:00 AM 5 4/26/2011 08:00 AM 5 4/26/2011 08:00 AM 76 15 1239 4/26/2011 08:15 AM 65 4/26/2011 08:15 AM 6 4/26/2011 08:15 AM 5 4/26/2011 08:15 AM 4 4/26/2011 08:15 AM 70 4 1149 4126/2011 08:30 AM 114 4/26/2011 08:30 AM 14 4/26/2011 08:30 AM 5 4/26/2011 08:30 AM 6 4126/2011 08:30 AM 119 15 1068 4/26/2011 08:45 AM 127 4126/2011 08:45 AM 68 4/26/2011 08:45 AM 6 4/26/2011 08:45 AM 7 4/26/2011 08:45 AM 119 42 986 4/26/2011 09:00 AM 63 4/26/2011 09:00 AM 46 4/26/2011 09:00 AM 4 4/26/2011 09:00 AM 7 4126/2011 09:00 AM 47 30 993 4126/2011 09:15 AM 40 4/2612011 09:15 AM 23 4/26/2011 09:15 AM 4 4/26/2011 09:15 AM 6 4/26/2011 09:15 AM 37 23 972 4126/2011 09:30 AM 49 4/26/2011 09:30 AM 20 4/26/2011 09:30 AM 4 4/26/2011 09:30 AM 4 4126/2011 09:30 AM 68 13 857 4/26/2011 09:45 AM 80 4/26/2011 09:45 AM 78 4/26/2011 09:45 AM 7 4/26/2011 09:45 AM 5 4/26/2011 09:45 AM 67 74 799 4/2612011 10:00 AM 43 4126/2011 10:00 AM 67 4/26/2011 10:00 AM 4 4/26/2011 10:00 AM 5 4/26/2011 10:00 AM 26 67 814 4126/2011 10:15 AM 46 4/2612011 10:15 AM 33 4/26/2011 10:15 AM 4 4/26/2011 10:15 AM 7 4/26/2011 10:15 AM 35 23 829 4/2612011 10:30 AM 68 4/26/2011 10:30 AM 30 4/26/2011 10:30 AM 5 4/26/2011 10:30 AM 5 4/26/2011 10:30 AM 47 28 854 4/26/2011 10:45 AM 72 4/26/2011 10:45 AM 77 4/26/2011 10:45 AM 3 4126/2011 10:45 AM 7 4/26/2011 10:45 AM 60 76 838 4/26/2011 11:00 AM 40 412612011 11:00 AM 84 4/26/2011 11:00 AM 4 4126/2011 11:00 AM 5 4/26/2011 11:00 AM 40 81 880 4/26/2011 11:15 AM 28 4/26/2011 11:15 AM 28 4/26/2011 11:15 AM 6 4126/2011 11:15 AM 4 4/26/2011 11:15 AM 29 48 875 4126/2011 11:30 AM 32 4/26/2011 11:30 AM 57 4/26/2011 11:30 AM 4 4126/2011 11:30 AM 5 4/2612011 11:30 AM 41 40 871 4/2612011 11:45 AM 57 4/2612011 11:45 AM 87 4/26/2011 11:45 AM 4 4/26/2011 11:45 AM 3 4/26/2011 11:45 AM 46 106 879 4/26/2011 12:00 PM 40 4126/2011 12:00 PM 129 4/26/2011 12:00 PM 3 4/26/2011 12:00 PM 1 4/26/2011 12:00 PM 29 135 962 4/26/2011 12:15 PM 57 4/26/2011 12:15 PM 79 4/26/2011 12:15 PM 4 4/26/2011 12:15 PM 3 4126/2011 12:15 PM 38 50 1050 4126/2011 12:30 PM 99 4126/2011 12:30 PM 67 4/26/2011 12:30 PM 5 4/26/2011 12:30 PM 5 4/26/2011 12:30 PM 53 52 1152 4126/2011 12:45 PM 71 4/26/2011 12:45 PM 63 4/26/2011 12:45 PM 3 4126/2011 12:45 PM 3 4/26/2011 12:45 PM 64 58 1111 _ 412612011 01:00 PM 32 4/2612011 01:00 PM 63 4/26/2011 01:00 PM 7 4126/2011 01:00 PM 2 4126/2011 01:00 PM 63 28 969 Sour "I Traffic Data Services, Inc. Prepared by Michav' - id - TENW 5/912011 r A-3 i I GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 - DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320tl Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time 01r 15 PM N4 44/26/2011 01 15 PM 37 Time E13 4 Hourly Volume 01r 15 PM 50 Date Time 0115 PM 2 g Date 015 PM 24 Date 4126/2011 01:30 PM 32 4/26/2011 01:30 PM 29 4126/2011 01:30 PM 4 4/26/2011 01:30 PM 4 4/2612011 01:30 PM 50 24 721 4/26/2011 01:45 PM 43 4/26/2011 01:45 PM 62 4/26/2011 01:45 PM 5 4/26/2011 01:45 PM 3 4/26/2011 01:45 PM 36 82 690 4/26/2011 02:00 PM 37 4/26/2011 02:00 PM 86 4/26/2011 02:00 PM 2 4/26/2011 02:00 PM 4 4/26/2011 02:00 PM 35 115 774 4/26/2011 02:15 PM 22 4/2612011 02:15 PM 60 4/26/2011 02:15 PM 4 4/2612011 02:15 PM 5 4126/2011 02:15 PM 48 38 830 4/26/2011 02:30 PM 28 4/26/2011 02:30 PM . 56 4/26/2011 02:30 PM 4 4/26/2011 02:30 PM 4 4/26/2011 02:30 PM 33 36 848 4126/2011 02:45 PM 35 4/26/2011 02:45 PM 81 4/26/2011 02:45 PM 1 4/26/2011 02:45 PM 2 4/26/2011 02:45 PM 37 37 810 4126/2011 03:00 PM 33 4/26/2011 03:00 PM 82 4/26/2011 03:00 PM 1 4/26/2011 03:00 PM 2 4/26/2011 03:00 PM 30 55 734 4/26/2011 03:15 PM 26 4/26/2011 03:15 PM 66 4/2612011 03:15 PM 3 4/26/2011 03:15 PM 2 4/26/2011 03:15 PM 33 46 733 4/2612011 03:30 PM 38 4/26/2011 03:30 PM 54 4/26/2011 03:30 PM 3 4/26/2011 03:30 PM 3 4/26/2011 03:30 PM 19 40 729 4/26/2011 03:45 PM 32 4/26/2011 03:45 PM 41 4/26/2011 03:45 PM 2 4/26/2011 03:45 PM 3 4/26/2011 03:45 PM 26 37 677 4/26/2011 04:00 PM 26 4/26/2011 04:00 PM 47 4/26/2011 04:00 PM 3 4/2612011 04:00 PM 3 4/2612011 04:00 PM 24 42 619 4/26/2011 04:15 PM 35 4/26/2011 04:15 PM 31 4/26/2011 04:15 PM 2 4/26/2011 04:15 PM 1 4/26/2011 04:15 PM 29 44 585 4/26/2011 04:30 PM 42 4/26/2011 04:30 PM 57 4/26/2011 04:30 PM 2 4/26/2011 04:30 PM 3 4/26/2011 04:30 PM 29 45 606 4/26/2011 04:45 PM 32 4/26/2011 04:45 PM 56 4/26/2011 04:45 PM .4 4/26/2011 04:45 PM 4 4/26/2011 04:45 PM 36 60 657 4/26/2011 05:00 PM 33 4/26/2011 05:00 PM 51 4/26/2011 05:00 PM 3 4126/2011 05:00 PM 4 4126/2011 05:00 PM 36 68 707 4/26/2011 05:15 PM 44 4/2612011 05:15 PM 58 4/26/2011 05:15 PM 2 4/26/2011 05:15 PM 1 4/26/2011 05:15 PM 46 40 756 4/26/2011 05:30 PM 59 4/26/2011 05:30 PM 36 4/26/2011 05:30 PM 0 4/26/2011 05:30 PM 1 4/26/2011 05:30 PM 36 41 751 4/26/2011 05:45 PM 98 4/26/2011 05:45 PM 38 4/26/2011 05:45 PM 0 4/26/2011 05:45 PM 0 4/26/2011 05:45 PM 41 32 768 4/26/2011 06:00 PM 75 4/26/2011 06:00 PM 68 4/26/2011 06:00 PM 1 4126/2011 06:00 PM 1 4/26/2011 06:00 PM 24 39 781 4/26/2011 06:15 PM 58 4/26/2011 06:15 PM 22 4/2612011 06:15 PM 1 4/26/2011 06:15 PM 1 4/26/2011 06:15 PM 25 21 718 4/26/2011 06:30 PM 48 4/26/2011 06:30 PM 38 4/26/2011 06:30 PM 5 4/26/2011 06:30 PM 3 4/26/2011 06:30 PM 32 20 691 4/26/2011 06:45 PM 79 4/26/2011 06:45 PM 35 4126/2011 06:45 PM 5 4/26/2011 06:45 PM 4 4126/2011 06:45 PM 42 34 681 4126/2011 07:00 PM 40 4/26/2011 07:00 PM 44 4126/2011 07:00 PM 2 4/26/2011 07:00 PM 2 4/26/2011 07:00 PM 29 44 634 4/26/2011 07:15 PM 9 4/26/2011 07:15 PM 27 4/26/2011 07:15 PM 0 4/26/2011 07:15 PM 1 4/26/2011 07:15 PM 9 18 570 4/26/2011 07:30 PM 4 4/26/2011 07:30 PM 17 4/26/2011 07:30 PM 0 4/26/2011 07:30 PM 0 4/26/2011 07:30 PM 9 28 482 4/26/2011 07:45 PM 3 4/26/2011 07:45 PM 19 4/26/2011 07:45 PM 2 4/26/2011 07:45 PM 2 4/26/2011 07:45 PM 7 16 332 4126/2011 08:00 PM 11 4/26/2011 08:00 PM 52 4/26/2011 08:00 PM 1 4/26/2011 08:00 PM 1 4126/2011 08:00 PM 8 29 273 4/26/2011 08:15 PM 6 4/26/2011 08:15 PM 50 4/26/2011 08:15 PM 3 4/2612011 08:15 PM 3 4126/2011 08:15 PM 5 38 314 4/26/2011 08:30 PM 7 4/26/2011 08:30 PM 60 4126/2011 08:30 PM 2 4/26/2011 08:30 PM 2 4126/2011 08:30 PM 14 46 387 4/26/2011 08:45 PM 10 4/26/2011 08:45 PM 139 4/26/2011 08:45 PM 1 4126/2011 08:45 PM 3 4/26/2011 08:45 PM 12 43 546 4126/2011 09:00 PM 3 4/26/2011 09:00 PM 78 4/26/2011 09:00 PM 2 4/2612011 09:00 PM 2 4/26/2011 09:00 PM 9 65 603 4/26/2011 09:15 PM 3 4126/2011 09:15 PM 79 4/26/2011 09:15 PM 2 4/26/2011 09:15 PM 2 4/26/2011 09:15 PM 6 45 635 4/26/2011 09:30 PM 3 4/26/2011 09:30 PM 67 4/26/2011 09:30 PM 2 4/26/2011 09:30 PM 3 4/26/2011 09:30 PM 10 38 627 4/26/2011 09:45 PM 2 4/26/2011 09:45 PM 15 4/26/2011 09:45 PM 1 4/26/2011 09:45 PM 1 4126/2011 09:45 PM 10 9 457 4/26/2011 10:00 PM 0 4/26/2011 10:00 PM 20 4/26/2011 10:00 PM 1 4/26/2011 10:00 PM 2 4/26/2011 10:00 PM 9 9 339 4126/2011 10:15 PM 6 4/26/2011 10:15 PM 4 4126/2011 10:15 PM 0 4/26/2011 10:15 PM 0 4/26/2011 10:15 PM 4 7 223 4/26/2011 10:30 PM 0 4/26/2011 10:30 PM 2 4/26/2011 10:30 PM 1 4/26/2011 10:30 PM 1 4/2612011 10:30 PM 7 5 116 4/26/2011 10:45 PM 0 4/26/2011 10:45 PM 2 4/26/2011 10:45 PM 0 4/26/2011 10:45 PM 0 4126/2011 10:45 PM 6 3 89 4/26/2011 11:00 PM 0 4126/2011 11:00 PM 2 4126/2011 11:00 PM 0 4126/2011 11:00 PM 0 4/26/2011 11:00 PM 3 9 62 4/26/2011 11:15 PM 0 4/26/2011 11:15 PM 1 4/26/2011 11:15 PM 0 4/26/2011 11:15 PM 0 4/26/2011 11:15 PM 3 4 49 4/26/2011 11:30 PM 0 4/26/2011 11:30 PM 1 4/26/2011 11:30 PM 0 4126/2011 11:30 PM 0 412612011 11:30 PM 2 1 4/2612011 11:45 PM 0 4/26/2011 11:45 PM 0 4/26/2011 11:45 PM 0 4/2612011 11:45 PM 0 4/2612011 11:45 PM 6 6 4/2612011 3222 3125 188 197 2787 2554 Total Site ADT 12,073 I Source: All Traffic Data Services, Inc. Prepared by Michael Read - TENW 5/9/2011 _ Page A-4 GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 32011 Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Dale Time SB Date Time NB Date Time EB . WB Hourly Volume 4/27/2011 12:00 AM 0 4/27/2011 12:00 AM 0 4127/2011 12:00 AM 0 4/27/2011 12:00 AM 0 4/27/2011 12:00 AM 1 1 4/27/2011 12:15 AM 0 4/27/2011 12:15 AM 1 4/27/2011 12:15 AM 0 4/27/2011 12:15 AM 0 4/27/2011 12:15 AM 0 1 4/27/2011 12:30 AM 0 4/27/2011 12:30 AM 2 4/27/2011 12:30 AM 0 4/27/2011 12:30 AM 0 4/27/2011 12:30 AM 1 0 4/2712011 12:45 AM 1 4/27/2011 12:45 AM 3 4/27/2011 12:45 AM 0 4127/2011 12:45 AM 0 4/27/2011 12:45 AM 4 2 17 4/27/2011 01:00 AM 1 4/2712011 01:00 AM 2 4/27/2011 01:00 AM 0 4/27/2011 01:00 AM 0 4/27/2011 01:00 AM 3 0 21 4/27/2011 01:15 AM 0 4/27/2011 01:15 AM 0 412712011 01:15 AM 0 4/27/2011 01:15 AM 0 4/27/2011 01:15 AM 2 1 22 4/2712011 01:30 AM 0 4127/2011 01:30 AM 0 4/27/2011 01:30 AM 0 4/27/2011 01:30 AM 0 4/27/2011 01:30 AM 0 2 21 4/27/2011 01:45 AM 0 4/27/2011 01:45 AM 0 4/27/2011 01:45 AM 0 4/27/2011 01:45 AM 0 4/27/2011 01:45 AM 1 1 13 4127/2011 02:00 AM 0 4127/2011 02:00 AM 0 4/27/2011 02:00 AM 0 4/27/2011 02:00 AM 0 4/27/2011 02:00 AM 0 0 7 4/27/2011 02:15 AM 0 4/27/2011 02:15 AM 0 4/27/2011 02:15 AM 0 4/27/2011 02:15 AM 0 4/27/2011 02:15 AM 0 0 4 4/27/2011 02:30 AM 1 4/2712011 02:30 AM 1 4/27/2011 02:30 AM 0 4/27/2011 02:30 AM 0 4/2712011 02:30 AM 0 0 4 4/27/2011 02:45 AM 0 4/2712011 02:45 AM 0 4/27/2011 02:45 AM 0 4/27/2011 02:45 AM 0 4/27/2011 02:45 AM 0 1 3 4/27/2011 03:00 AM 0 4/27/2011 03:00 AM 0 4/27/2011 03:00 AM 0 4/27/2011 03:00 AM 0 4/27/2011 03:00 AM 1 1 5 4/27/2011 03:15 AM 0 4/27/2011 03:15 AM 2 4/27/2011 03:15 AM 0 4/27/2011 03:15 AM 0 4/27/2011 03:15 AM 0 1 8 4/27/2011 03:30 AM 0 4/27/2011 03:30 AM 0 4/27/2011 03:30 AM 0 4/27/2011 03:30 AM 0 4/27/2011 03:30 AM 0 0 6 4/2712011 03:45 AM 0 4127/2011 03:45 AM 2 4/27/2011 03:45 AM 0 4/27/2011 03:45 AM 0 4/27/2011 03:45 AM 0 0 7 412712011 04:00 AM 0 4127/2011 04:00 AM 2 4/27/2011 04:00 AM 1 4/27/2011 04:00 AM 1 4/27/2011 04:00 AM 4 2 15 4/27/2011 04:15 AM 0 4/2712011 04:15 AM 0 4127/2011 04:15 AM 0 4/27/2011 04:15 AM 0 4/27/2011 04:15 AM 2 2 16 4/27/2011 04:30 AM 2 4/27/2011 04:30 AM 0 4/27/2011 04:30 AM 0 4/2712011 04:30 AM 0 4/27/2011 04:30 AM 1 0 19 4/27/2011 04:45 AM 0 4/27/2011 04:45 AM 0 4/27/2011 04:45 AM 0 4/27/2011 04:45 AM 0 4/27/2011 04:45 AM 1 0 18 4/27/2011 05:00 AM 0 4/27/2011 05:00 AM 0 4/27/2011 05:00 AM 0 4/27/2011 05:00 AM 0 4/27/2011 05:00 AM 0 0 8 4/27/2011 05:15 AM 2 4/27/2011 05:15 AM 0 4/27/2011 05:15 AM 0 4/27/2011 05:15 AM 0 4/27/2011 05:15 AM 2 0 8 4/27/2011 05:30 AM 0 4/27/2011 05:30 AM 0 4/2712011 05:30 AM 0 4/27/2011 05:30 AM 0 4/27/2011 05:30 AM 6 0 11 4/27/2011 05:45 AM 3 4/27/2011 05:45 AM 0 4/27/2011 05:45 AM 0 4/27/2011 05:45 AM 0 4/27/2011 05:45 AM 9 0 22 4/27/2011 06:00 AM 13 4127/2011 06:00 AM 0 4/27/2011 06:00 AM 1 4/27/2011 06:00 AM 1 4/27/2011 06:00 AM 10 3 50 4/27/2011 06:15 AM 15 4/27/2011 06:15 AM 2 4/27/2011 06:15 AM 0 4/27/2011 06:15 AM 0 4/27/2011 06:15 AM 23 3 89 4/2712011 06:30 AM 62 4/27/2011 06:30 AM 1 4/27/2011 06:30 AM 1 4/27/2011 06:30 AM 0 4/27/2011 06:30 AM 38 3 188 4/27/2011 06:45 AM 125 4/27/2011 06:45 AM 12 4/27/2011 06:45 AM 2 4/27/2011 06:45 AM 2 4/27/2011 06:45 AM 90 8 415 4/27/2011 07:00 AM 97 4/27/2011 07:00 AM 6 4127/2011 07:00 AM 1 4/27/2011 07:00 AM 0 4/27/2011 07:00 AM 68 7 566 4/27/2011 07:15 AM 121 4/27/2011 07:15 AM 9 4/27/2011 07:15 AM 1 4127/2011 07:15 AM 2 4/27/2011 07:15 AM 94 8 758 4/27/2011 07:30 AM 170 4/27/2011 07:30 AM 17 4/27/2011 07:30 AM 3 4/2712011 07:30 AM 3 4/27/2011 07:30 AM 156 15 1017 4/27/2011 07:45 AM 223 4/27/2011 07:45 AM 34 4/27/2011 07:45 AM 5 4/27/2011 07:45 AM 6 4/27/2011 07:45 AM 177 17 1240 4/27/2011 08:00 AM 73 4/27/2011 08:00 AM 30 4/27/2011 08:00 AM 4 4/27/2011 08:00 AM 3 4/27/2011 08:00 AM 90 10 1271 4/27/2011 08:15 AM 71 4127/2011 08:15 AM 10 4/27/2011 08:15 AM 3 4/27/2011 08:15 AM 2 4/27/2011 08:15 AM 60 9 1191 4/27/2011 08:30 AM 89 4/27/2011 08:30 AM 19 4/27/2011 08:30 AM 9 4/27/2011 08:30 AM 5 4/27/2011 08:30 AM 125 16 1090 4/27/2011 08:45 AM 129 4/27/2011 08:45 AM 41 4/27/2011 08:45 AM 7 4/27/2011 08:45 AM 7 4/27/2011 08:45 AM 119 41 972 4/27/2011 09:00 AM 68 4/27/2011 09:00 AM 60 4/27/2011 09:00 AM 5 4/27/2011 09:00 AM 8 4/27/2011 09:00 AM 33 47 983 4/27/2011 09:15 AM 46 4/27/2011 09:15 AM 18 4/27/2011 09:15 AM 3 4/27/2011 09:15 AM 4 4/27/2011 09:15 AM 46 17 962 4/27/2011 09:30 AM 61 4/27/2011 09:30 AM 21 4/27/2011 09:30 AM 7 4/27/2011 09:30 AM 4 4127/2011 09:30 AM 51 21 864 4/27/2011 09:45 AM 103 4/27/2011 09:45 AM 70 4/27/2011 09:45 AM 8 4/27/2011 09:45 AM 8 4/27/2011 09:45 AM 75 74 858 4/27/2011 10:00 AM 41 4/27/2011 10:00 AM 73 4/27/2011 10:00 AM 4 4/27/2011 10:00 AM 3 4127/2011 10:00 AM 36 82 876 4/27/2011 10:15 AM 45 4/27/2011 10:15 AM 30 4/27/2011 10:15 AM 4 4/27/2011 10:15 AM 7 4/27/2011 10:15 AM 47 31 906 4/2712011 10:30 AM 50 4/27/2011 10:30 AM 25 4/27/2011 10:30 AM 6 4/27/2011 10:30 AM 5 4/27/2011 10:30 AM 52 17 896 4/27/2011 10:45 AM 78 4/27/2011 10:45 AM 81 4/27/2011 10:45 AM 4 4/27/2011 10:45 AM 2 4/27/2011 10:45 AM 67 73 863 4/27/2011 11:00 AM 23 4/27/2011 11:00 AM 85 4/27/2011 11:00 AM 3 4/27/2011 11:00 AM 5 4/27/2011 11:00 AM 33 85 858 4/27/2011 11:15 AM 41 4/27/2011 11:15 AM 41 4/27/2011 11:15 AM 5 4/27/2011 11:15 AM 4 4/27/2011 11:15 AM 23 30 838 4/27/2011 11:30 AM 49 4/27/2011 11:30 AM 46 4/27/2011 11:30 AM 3 4/27/2011 11:30 AM 6 4/27/2011 11:30 AM 33 43 863 4/27/2011 11:45 AM 74 4/2712011 11:45 AM 115 4/27/2011 11:45 AM 5 4/27/2011 11:45 AM 4 4/27/2011 11:45 AM 59 86 901 4/27/2011 12:00 PM 52 4/2712011 12:00 PM 119 4/27/2011 12:00 PM 6 4/27/2011 12:00 PM 4 4/27/2011 12:00 PM 28 142 1018 4/27/2011 12:15 PM 52 4/2712011 12:15 PM 45 4/27/2011 12:15 PM 2 4/27/2011 12:15 PM 4 4/27/2011 12:15 PM. 37 49 1063 4/27/2011 12:30 PM 86 4127/2011 12:30 PM 41 4/27/2011 12:30 PM 4 4/27/2011 12:30 PM 1 4/27/2011 12:30 PM 47 51 1113 4/27/2011 12:45 PM 98 4127/2011 12:45 PM 70 4/27/2011 12:45 PM 4 4/27/2011 12:45 PM 4 4/27/2011 12:45 PM 71 69 1086 4127/2011 01:00 PM 33 4/2712011 01:00 PM 76 4/27/2011 01:00 PM 5 4/27/2011 01:00 PM 5 4/27/2011 01:00 PM 29 79 962 Sou, Traffic Data Services, Inc. Prepared by Michas'' d - TENW 5/9/2011 A-5 GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways J n ~ Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 3200 Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB Date Time NB Dale Time EB WB Hourly Volume 4/2712011 01:15 PM 23 4/27/2011 01:15 PM 35 4/27/2011 01:15 PM 3 4/27/2011 01:15 PM 3 4/27/2011 01:15 PM 21 47 905 4/27/2011 01:30 PM 36 4/27/2011 01:30 PM 50 4/27/2011 01:30 PM 4 4/27/2011 01:30 PM 4 4/27/2011 01:30 PM 23 36 828 4/27/2011 01:45 PM 40 4127/2011 01:45 PM 78 4/27/2011 01:45 PM 4 4/27/2011 01:45 PM 3 4/27/2011 01:45 PM 32 93 762 4/27/2011 02:00 PM 21 4/27/2011 02:00 PM 109 4/27/2011 02:00 PM 1 4/27/2011 02:00 PM 2 4/27/2011 02:00 PM 28 112 808 4/27/2011 02:15 PM 23 4/27/2011 02:15 PM 65 4/27/2011 02:15 PM 6 4/27/2011 02:15 PM 6 4/27/2011 02:15 PM 21 62 859 4/27/2011 02:30 PM 22 4/27/2011 02:30 PM 80 4/27/2011 02:30 PM 2 4/2712011 02:30 PM 4 4/27/2011 02:30 PM 25 51 890 4/27/2011 02:45 PM 26 4/27/2011 02:45 PM 76 4/27/2011 02:45 PM 4 4/27/2011 02:45 PM 6 4/27/2011 02:45 PM 35 73 860 4/27/2011 03:00 PM 32 4/27/2011 03:00 PM 71 4127/2011 03:00 PM 4 4/27/2011 03:00 PM 5 4/27/2011 03:00 PM 22 69 790 4/27/2011 03:15 PM 38 4/27/2011 03:15 PM 71 4/27/2011 03:15 PM 4 4/27/2011 03:15 PM 1 4/27/2011 03:15 PM 18 39 778 4/27/2011 03:30 PM 24 4/27/2011 03:30 PM 52 4/27/2011 03:30 PM 1 4/27/2011 03:30 PM 2 4/27/2011 03:30 PM 38 31 742 4/27/2011 03:45 PM 32 4/27/2011 03:45 PM 47 4/27/2011 03:45 PM 1 4/27/2011 03:45 PM 2 4/27/2011 03:45 PM 48 22 674 4/27/2011 04:00 PM 25 4/27/2011 04:00 PM 64 4/27/2011 04:00 PM 2 4/27/2011 04:00 PM 1 4/27/2011 04:00 PM 40 41 644 4/27/2011 04:15 PM 28 4/27/2011 04:15 PM 66 4/27/2011 04:15 PM 4 4/27/2011 04:15 PM 3 4/27/2011 04:15 PM 33 35 642 4/27/2011 04:30 PM 24 4/27/2011 04:30 PM 73 4/27/2011 04:30 PM 2 4/2712011 04:30 PM 4 4/2712011 04:30 PM 31 .43 671 4127/2011 04:45 PM 38 4127/2011 04:45 PM 45 4/27/2011 04:45 PM 1 4/27/2011 04:45 PM 2 4/27/2011 04:45 PM 42 58 705 4/27/2011 05:00 PM 18 4/27/2011 05:00 PM 31 4/27/2011 05:00 PM 6 4/27/2011 05:00 PM 6 4/27/2011 05:00 PM 44 80 717 4/27/2011 05:15 PM 39 4/27/2011 05:15 PM 40 4/2712011 05:15 PM 3 4/27/2011 05:15 PM 4 4/27/2011 05:15 PM 32 43 709 4/27/2011 05:30 PM 56 4/27/2011 05:30 PM 45 4/27/2011 05:30 PM 1 4/27/2011 05:30 PM 3 4/27/2011 05:30 PM 59 50 746 4/27/2011 05:45 PM 109 4/27/2011 05:45 PM 29 4/27/2011 05:45 PM 2 4/27/2011 05:45 PM 1 4/27/2011 05:45 PM 57 32 790 4/27/2011 06:00 PM 87 4/27/2011 06:00 PM 37 4127/2011 06:00 PM 1 4/27/2011 06:00 PM 2 4/27/2011 06:00 PM 35 27 794 4/27/2011 06:15 PM 59 4/27/2011 06:15 PM 35 4/27/2011 06:15 PM 1 4/27/2011 06:15 PM 1 4/27/2011 06:15 PM 26 21 776 4/27/2011 06:30 PM 23 4/27/2011 06:30 PM 16 4/27/2011 06:30 PM 2 4/27/2011 06:30 PM 1 4/27/2011 06:30 PM 20 28 652 4/27/2011 06:45 PM 48 4/27/2011 06:45 PM 14 4/27/2011 06:45 PM 1 4/27/2011 06:45 PM 1 4/27/2011 06:45 PM 25 14 525 4/27/2011 07:00 PM 38 4/27/2011 07:00 PM 27 4/27/2011 07:00 PM 1 4/27/2011 07:00 PM 1 4/2712011 07:00 PM 26 28 457 4/27/2011 07:15 PM 11 4/27/2011 07:15 PM 31 4/27/2011 07:15 PM 1 4/27/2011 07:15 PM 1 4/27/2011 07:15 PM 14 24 396 4/27/2011 07:30 PM 7 4/27/2011 07:30 PM 27 4/27/2011 07:30 PM 2 4/27/2011 07:30 PM 2 4/27/2011 07:30 PM 18 68 430 4/27/2011 07:45 PM 9 4/27/2011 07:45 PM 33 4/27/2011 07:45 PM 2 4/27/2011 07:45 PM 2 4/27/2011 07:45 PM 8 36 417 4/27/2011 08:00 PM 6 4/27/2011 08:00 PM 26 4/27/2011 08:00 PM 3 4/27/2011 08:00 PM 3 4/27/2011 08:00 PM 1 29 364 4/2712011 08:15 PM 7 4/27/2011 08:15 PM 43 4/27/2011 08:15 PM 3 4/27/2011 08:15 PM 2 4/27/2011 08:15 PM 6 29 372 4/27/2011 08:30 PM 8 4/27/2011 08:30 PM 64 4/27/2011 08:30 PM 0 4/27/2011 08:30 PM 1 4/27/2011 08:30 PM 9 29 359 4/27/2011 08:45 PM 9 4/27/2011 08:45 PM 127 4/27/2011 08:45 PM 4 4/27/2011 08:45 PM 4 4/27/2011 08:45 PM 17 46 476 4/27/2011 09:00 PM 8 4/27/2011 09:00 PM 52 4127/2011 09:00 PM 1 4/27/2011 09:00 PM 2 4/27/2011 09:00 PM 7 24 502 4/27/2011 09:15 PM 5 4/27/2011 09:15 PM 70 4/27/2011 09:15 PM 4 4/27/2011 09:15 PM 4 4/27/2011 09:15 PM 12 53 560 4/27/2011 09:30 PM 4 4/27/2011 09:30 PM 39 4/27/2011 09:30 PM 1 4/27/2011 09:30 PM 2 4/27/2011 09:30 PM 5 36 536 4/27/2011 09:45 PM 1 4/27/2011 09:45 PM 30 4/27/2011 09:45 PM 2 4/27/2011 09:45 PM 3 4/27/2011 09:45 PM 4 29 398 4/27/2011 10:00 PM 4 4/27/2011 10:00 PM 17 4/27/2011 10:00 PM 1 4/27/2011 10:00 PM 1 4/27/2011 10:00 PM 6 10 343 4/27/2011 10:15 PM 8 4/27/2011 10:15 PM 8 4/27/2011 10:15 PM 1 4/27/2011 10:15 PM 1 4/27/2011 10:15 PM 12 8 233 4/27/2011 10:30 PM 1 4/27/2011 10:30 PM 4 4/27/2011 10:30 PM 0 4/27/2011 10:30 PM 0 4/27/2011 10:30 PM 3 2 156 4/27/2011 10:45 PM 0 4/27/2011 10:45 PM 1 4127/2011 10:45 PM 0 4/27/2011 10:45 PM 0 4/27/2011 10:45 PM 7 2 97 4/27/2011 11:00 PM 0 4/2712011 11:00 PM 9 4/27/2011 11:00 PM 0 4/27/2011 11:00 PM 0 4/27/2011 11:00 PM 2 2 71 4/27/2011 11:15 PM 0 4/27/2011 11:15 PM 1 4/27/2011 11:15 PM 0 4/27/2011 11:15 PM 0 4/2712011 11:15 PM 3 1 38 4/27/2011 11:30 PM 0 4/27/2011 11:30 PM 1 4/27/2011 11:30 PM 0 4/27/2011 11:30 PM 0 4127/2011 11:30 PM 3 1 4/27/2011 11:45 PM 0 4/27/2011 11:45 PM 0 4/27/2011 11:45 PM 0 4/27/2011 11:45 PM 0 4/27/2011 11:45 PM 2 1 4/27/2011 3195 3051 202 206 2775 2716 Total Site ADT 12,145 I - Source: All Traffic Data Services, Inc. Prepared by Michael Read - TENW 5/912011 Page A-6 GRCC Campus Trip Generation Study - April 2011 .Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320tl Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB Date Time NB Date Time EB W B Hourly Volume 4/28/2011 12:00 AM 0 4/28/2011 12:00 AM 0 4/28/2011 12:00 AM 0 4/28/2011 12:00 AM 0 4/28/2011 12:00 AM 3 1 4/28/2011 12:15 AM 0 4/28/2011 12:15 AM 0 4/28/2011 12:15 AM 0 4/28/2011 12:15 AM 0 4/28/2011 12:15 AM 4 5 4/2812011 12:30 AM 0 4/28/2011 12:30 AM 0 4/28/2011 12:30 AM 0 4/28/2011 12:30 AM 0 4/28/2011 12:30 AM 0 2 4/28/2011 12:45 AM 0 4/28/2011 12:45 AM 0 4/28/2011 12:45 AM 0 4/28/2011 12:45 AM 0 4/2812011 12:45 AM 2 3 20 4/28/2011 01:00 AM 0 4128/2011 01:00 AM 4 4/28/2011 01:00 AM 1 4/28/2011 01:00 AM 1 4/28/2011 01:00 AM 2 2 26 4/28/2011 01:15 AM 1 4/28/2011 01:15 AM 0 4/28/2011 01:15 AM 0 4/28/2011 01:15 AM 0 4/28/2011 01:15 AM 0 1 19 4/28/2011 01:30 AM 1 4/28/2011 01:30 AM 0 4/28/2011 01:30 AM 0 4/28/2011 01:30 AM 0 4/28/2011 01:30 AM 1 1 20 4/28/2011 01:45 AM 0 4/28/2011 01:45 AM 1 4128/2011 01:45 AM 0 4/28/2011 01:45 AM 0 4/28/2011 01:45 AM 0 0 16 4/28/2011 02:00 AM 0 4/28/2011 02:00 AM 0 4/28/2011 02:00 AM 0 4/28/2011 02:00 AM 0 4/28/2011 02:00 AM 1 0 7 4/28/2011 02:15 AM 0 4/28/2011 02:15 AM 0 4/28/2011 02:15 AM 0 4/28/2011 02:15 AM 0 4/28/2011 02:15 AM 0 0 5 4/28/2011 02:30 AM 0 4/28/2011 02:30 AM 2 4/28/2011 02:30 AM 0 4128/2011 02:30 AM 0 4/28/2011 02:30 AM 0 0 4 4/28/2011 02:45 AM 0 4/28/2011 02:45 AM 0 4/28/2011 02:45 AM 0 4/28/2011 02:45 AM 0 4/28/2011 02:45 AM 0 0 3 4/28/2011 03:00 AM 1 4/28/2011 03:00 AM 2 4/28/2011 03:00 AM 0 4/28/2011 03:00 AM 0 4/28/2011 03:00 AM 0 0 5 4/28/2011 03:15 AM 0 4/2812011 03:15 AM 0 4/28/2011 03:15 AM 0 4/28/2011 03:15 AM 0 4/28/2011 03:15 AM 0 0 5 4/28/2011 03:30 AM 0 4/28/2011 03:30 AM 0 4/28/2011 03:30 AM 0 4/28/2011 03:30 AM 0 4/28/2011 03:30 AM 0 0 3 4/28/2011 03:45 AM 0 4/28/2011 03:45 AM 2 4/28/2011 03:45 AM 0 4/28/2011 03:45 AM 0 4/28/2011 03:45 AM 0 0 5 4128/2011 04:00 AM 1 4/28/2011 04:00 AM 2 4/28/2011 04:00 AM 0 4/28/2011 04:00 AM 0 4/28/2011 04:00 AM 0 0 5 4128/2011 04:15 AM 0 4128/2011 04:15 AM 2 4/28/2011 04:15 AM 0 4/28/2011 04:15 AM 0 4128/2011 04:15 AM 2 2 11 4/28/2011 04:30 AM 1 4/28/2011 04:30 AM 1 4/28/2011 04:30 AM 0 4/28/2011 04:30 AM 0 4/28/2011 04:30 AM 1 1 15 4/28/2011 04:45 AM 0 4/28/2011 04:45 AM 2 4/28/2011 04:45 AM 0 4/28/2011 04:45 AM 0 4/28/2011 04:45 AM 2 0 17 4/28/2011 05:00 AM 0 4/28/2011 05:00 AM 0 4/28/2011 05:00 AM 0 4/28/2011 05:00 AM 0 4/2812011 05:00 AM 0 0 14 4/28/2011 05:15 AM 1 4/28/2011 05:15 AM 0 4/28/2011 05:15 AM 0 4/2812011 05:15 AM 0 4/28/2011 05:15 AM 1 0 10 4/28/2011 05:30 AM 1 4/28/2011 05:30 AM 0 4/28/2011 05:30 AM 0 4/28/2011 05:30 AM 0 4/28/2011 05:30 AM 2 0 9 4/28/2011 05:45 AM 4 4/28/2011 05:45 AM 0 4/28/2011 05:45 AM 0 4/28/2011 05:45 AM 0 4/28/2011 05:45 AM 10 0 19 4/28/2011 06:00 AM 9 4/28/2011 06:00 AM 3 4/28/2011 06:00 AM 0 4/28/2011 06:00 AM 0 4/28/2011 06:00 AM 8 1 40 4/28/2011 06:15 AM 23 4/28/2011 06:15 AM 1 4/28/2011 06:15 AM 0 4/28/2011 06:15 AM 0 4/28/2011 06:15 AM 15 2 79 4/28/2011 06:30 AM 48 4/28/2011 06:30 AM 3 4/28/2011 06:30 AM 1 4/28/2011 06:30 AM 1 4/28/2011 06:30 AM 38 3 170 4/28/2011 06:45 AM 93 4/28/2011 06:45 AM 11 4/28/2011 06:45 AM 0 4/28/2011 06:45 AM 0 4128/2011 06:45 AM 82 10 352 4/28/2011 07:00 AM 99 4/28/2011 07:00 AM 7 4/28/2011 07:00 AM 1 4/2812011 07:00 AM 0 4/28/2011 07:00 AM 75 6 519 4/28/2011 07:15 AM 135 4/2812011 07:15 AM 8 4128/2011 07:15 AM 2 4/28/2011 07:15 AM 0 4/28/2011 07:15 AM 86 6 715 4/28/2011 07:30 AM 195 4/28/2011 07:30 AM 15 4/28/2011 07:30 AM 4 4/28/2011 07:30 AM 5 4/28/2011 07:30 AM 145 16 1001 4/28/2011 07:45 AM 213 4/28/2011 07:45 AM 31 4/28/2011 07:45 AM 6 4/28/2011 07:45 AM 4 4/28/2011 07:45 AM 175 10 1244 4/28/2011 08:00 AM 82 4/28/2011 08:00 AM 37 4/2812011 08:00 AM 0 4/28/2011 08:00 AM 1 4/28/2011 08:00 AM 86 7 1269 4128/2011 08:15 AM 82 4/28/2011 08:15 AM 20 4/28/2011 08:15 AM 6 4/28/2011 08:15 AM 5 4/28/2011 08:15 AM 62 8 1215 4/28/2011 08:30 AM 95 4/28/2011 08:30 AM 16 4/28/2011 08:30 AM 4 4/2812011 08:30 AM 2 4/28/2011 08:30 AM 100 18 1070 4/28/2011 08:45 AM 135 4/28/2011 08:45 AM 52 4/28/2011 08:45 AM 9 4/28/2011 08:45 AM 9 4/28/2011 08:45 AM 135 42 1013 4/28/2011 09:00 AM 49 4/28/2011 09:00 AM 66 4/28/2011 09:00 AM 7 4/28/2011 09:00 AM 6 4/28/2011 09:00 AM 58 42 1028 4/28/2011 09:15 AM 42 4/28/2011 09:15 AM 23 4/28/2011 09:15 AM 2 4/28/2011 09:15 AM 3 4/28/2011 09:15 AM 44 25 984 4/28/2011 09:30 AM 56 4/28/2011 09:30 AM 27 4/28/2011 09:30 AM 1 4/28/2011 09:30 AM 2 4/28/2011 09:30 AM 57 17 909 4128/2011 09:45 AM 88 4/28/2011 09:45 AM 70 4/28/2011 09:45 AM 7 4/28/2011 09:45 AM 5 4128/2011 09:45 AM 53 74 824 4/28/2011 10:00 AM 39 4/28/2011 10:00 AM 59 4/28/2011 10:00 AM 4 4/28/2011 10:00 AM 4 4/28/2011 10:00 AM 42 82 826 4/28/2011 10:15 AM 44 4/28/2011 10:15 AM 36 4/28/2011 10:15 AM 4 4128/2011 10:15 AM 5 4/28/2011 10:15 AM 40 32 848 4/28/2011 10:30 AM 58 4/28/2011 10:30 AM 41 4/28/2011 10:30 AM 7 4/28/2011 10:30 AM 2 4/28/2011 10:30 AM 40 28 864 4/28/2011 10:45 AM 82 4/28/2011 10:45 AM 80 4/28/2011 10:45 AM 2 4/28/2011 10:45 AM 5 4/28/2011 10:45 AM 71 79 886 4/28/2011 11:00 AM 48 4/28/2011 11:00 AM 80 4/28/2011 11:00 AM 4 4/28/2011 11:00 AM 2 4/28/2011 11:00 AM 36 71 897 4/28/2011 11:15 AM 26 4/28/2011 11:15 AM 43 4/28/2011 11:15 AM 2 4/28/2011 11:15 AM 3 4/28/2011 11:15 AM 29 47 886 4/28/2011 11:30 AM 45 4/28/2011 11:30 AM 45 4/28/2011 11:30 AM 4 4/28/2011 11:30 AM 4 4/28/2011 11:30 AM 40 62 910 4/28/2011 11:45 AM 82 4/28/2011 11:45 AM 91 4/28/2011 11:45 AM 4 4/28/2011 11:45 AM 4 4/28/2011 11:45 AM 55 109 936 4/28/2011 12:00 PM 46 4/28/2011 12:00 PM 76 4/28/2011 12:00 PM 3 4/28/2011 12:00 PM 2 4/28/2011 12:00 PM 30 134 986 4/28/2011 12:15 PM 53 4/28/2011 12:15 PM 82 4128/2011 12:15 PM 6 4128/2011 12:15 PM 5 4/28/2011 12:15 PM 31 46 1059 4/28/2011 12:30 PM 76 4/28/2011 12:30 PM 54 4/2812011 12:30 PM 1 4/28/2011 12:30 PM 4 4/28/2011 12:30 PM 44 58 1096 4/28/2011 12:45 PM 89 4/28/2011 12:45 PM 69 4128/2011 12:45 PM 5 4/28/2011 12:45 PM 4 4/28/2011 12:45 PM 87 49 1054 4/28/2011 01:00 PM 30 4/28/2011 01:00 PM 88 4/28/2011 01:00 PM 3 4/28/2011 01:00 PM 2 4/28/2011 01:00 PM 24 95 1005 Sourr •u Traffic Data Services, Inc. Prepared by Michael ^-qd - TENW 5/9/2011 -q A-7 V ~ GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320tl Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB Date Time NB Date Time EB WB Hourly Volume 4128/2011 01:15 PM 28 4/28/2011 01:15 PM 51 4/28/2011 01:15 PM 4 4/28/2011 01:15 PM 3 4/28/2011 01:15 PM 31 40 939 4128/2011 01:30 PM 28 4/28/2011 01:30 PM 51 4/28/2011 01:30 PM 4 4/28/2011 01:30 PM 1 4/28/2011 01:30 PM 28 47 861 4/28/2011 01:45 PM 46 4128/2011 01:45 PM 78 4/28/2011 01:45 PM 3 4/28/2011 01:45 PM 3 4/28/2011 01:45 PM 33 82 803 4128/2011 02:00 PM 28 4/28/2011 02:00 PM 96 4/28/2011 02:00 PM 3 4/28/2011 02:00 PM 2 4/28/2011 02:00 PM 30 105 825 4/28/2011 02:15 PM 26 4/2812011 02:15 PM 56 4/28/2011 02:15 PM 2 4/28/2011 02:15 PM 2 4/2812011 02:15 PM 20 72 846 i 4/28/2011 02:30 PM 34 4/28/2011 02:30 PM 60 4/28/2011 02:30 PM 2 4/28/2011 02:30 PM 1 4/28/2011 02:30 PM 21 53 858 4128/2011 02:45 PM 26 4/28/2011 02:45 PM 82 4/2812011 02:45 PM 3 4/28/2011 02:45 PM 4 4128/2011 02:45 PM 23 83 834 4/28/2011 03:00 PM 39 4/28/2011 03:00 PM 73 4/28/2011 .03:00 PM 3 4/2812011 03:00 PM 2 4/28/2011 03:00 PM 25 71 783 4/28/2011 03:15 PM 31 4/28/2011 03:15 PM 70 4/28/2011 03:15 PM 2 4/28/2011 03:15 PM 3 4128/2011 03:15 PM 18 59 788 i 4/28/2011 03:30 PM 35 412812011 03:30 PM 64 4/28/2011 03:30 PM 1 4/28/2011 03:30 PM 1 4/28/2011 03:30 PM 21 44 783 4/28/2011 03:45 PM 38 4/28/2011 03:45 PM 54 4/28/2011 03:45 PM 6 4/28/2011 03:45 PM 7 412812011 03:45 PM 38 42 747 4/28/2011 04:00 PM 25 4/28/2011 04:00 PM 60 4/28/2011 04:00 PM 2 4/28/2011 04:00 PM 1 4/28/2011 04:00 PM 28 45 695 4/28/2011 04:15 PM 35 4/28/2011 04:15 PM 42 4/28/2011 04:15 PM 1 4/2812011 04:15 PM 1 4/2812011 04:15 PM 23 35 649 4128/2011 04:30 PM 38 4/28/2011 04:30 PM 47 4/28/2011 04:30 PM 1 4/28/2011 04:30 PM 1 4/28/2011 04:30 PM 26 49 645 4/28/2011 04:45 PM 41 4/28/2011 04:45 PM 58 4/28/2011 04:45 PM 3 4/28/2011 04:45 PM 3 4/28/2011 04:45 PM 37 46 648 4/28/2011 05:00 PM 31 4128/2011 05:00 PM 49 4/28/2011 05:00 PM 0 4/28/2011 05:00 PM 0 4/28/2011 05:00 PM 37 84 688 4/28/2011 05:15 PM 35 4/28/2011 05:15 PM 44 412812011 05:15 PM 1 4128/2011 05:15 PM 1 4/28/2011 05:15 PM 31 40 703 4/28/2011 05:30 PM 51 4/28/2011 05:30 PM 54 4/28/2011 05:30 PM 1 4/28/2011 05:30 PM 2 4/28/2011 05:30 PM 29 46 724 4/28/2011 05:45 PM 81 4/28/2011 05:45 PM 35 4/28/2011 05:45 PM 1 4/28/2011 05:45 PM 2 4128/2011 05:45 PM 33 42 730 4/28/2011 06:00 PM 65 4/28/2011 06:00 PM 60 4/28/2011 06:00 PM 1 4/28/2011 06:00 PM 1 4128/2011 06:00 PM 30 35 721 4/28/2011 06:15 PM 66 ' 4/28/2011 06:15 PM 30 4/28/2011 06:15 PM 1 4/28/2011 06:15 PM 0 4/28/2011 06:15 PM 20 36 722 4/28/2011 06:30 PM 41 4/28/2011 06:30 PM 18 4/28/2011 06:30 PM 2 4/28/2011 06:30 PM 0 4/28/2011 06:30 PM 25 31 656 4/28/2011 06:45 PM 55 4/28/2011 06:45 PM 38 4/28/2011 06:45 PM 3 4/28/2011 06:45 PM 3 4/28/2011 06:45 PM 36 21 618 4/28/2011 07:00 PM 31 4/2812011 07:00 PM 50 4/28/2011 07:00 PM 3 4/28/2011 07:00 PM 4 4/28/2011 07:00 PM 22 42 578 4/28/2011 07:15 PM 15 4/28/2011 07:15 PM 32 4/28/2011 07:15 PM 0 4/2812011 07:15 PM 1 4/28/2011 07:15 PM 17 23 513 4/28/2011 07:30 PM 9 4/28/2011 07:30 PM 18 4/28/2011 07:30 PM 2 4/28/2011 07:30 PM 3 4128/2011 07:30 PM 21 25 474 4/2812011 07:45 PM 9 4/2812011 07:45 PM 18 4128/2011 07:45 PM 2 4/28/2011 07:45 PM 2 4/28/2011 07:45 PM 9 23 381 4128/2011 08:00 PM 9 4/28/2011 08:00 PM 31 4/28/2011 08:00 PM 0 4/28/2011 08:00 PM 1 4/28/2011 08:00 PM 9 15 294 4/28/2011 08:15 PM 3 4/28/2011 08:15 PM 49 4128/2011 08:15 PM 2 4128/2011 08:15 PM 1 4/28/2011 08:15 PM 8 42 311 4/28/2011 08:30 PM 9 4/2812011 08:30 PM 44 4/28/2011 08:30 PM 4 4/28/2011 08:30 PM 3 4/28/2011 08:30 PM 6 32 331 . 4/28/2011 08:45 PM 11 4128/2011 08:45 PM 104 4/2812011 08:45 PM 4 4/28/2011 08:45 PM 4 4/28/2011 08:45 PM 14 25 430 4128/2011 09:00 PM 4 4/28/2011 09:00 PM 82 4/28/2011 09:00 PM 4 4/28/2011 09:00 PM 3 4128/2011 09:00 PM 8 49 515 4/28/2011 09:15 PM 7 4/28/2011 09:15 PM 37 4/2812011 09:15 PM 2 4/28/2011 09:15 PM 2 4/28/2011 09:15 PM 3 31 492 4/28/2011 09:30 PM 3 4/28/2011 09:30 PM 69 4128/2011 09:30 PM 1 4/28/2011 09:30 PM 1 4/28/2011 09:30 PM 4 18 490 4/28/2011 09:45 PM 1 4/28/2011 09:45 PM 28 4/28/2011 09:45 PM 4 4/28/2011 09:45 PM 3 4128/2011 09:45 PM 7 15 386 4/28/2011 10:00 PM 4 4/28/2011 10:00 PM 25 4/28/2011 10:00 PM 2 4/28/2011 10:00 PM 2 4/28/2011 10:00 PM 12 8 289 4/28/2011 10:15 PM 5 4/28/2011 10:15 PM 3 4/28/2011 10:15 PM 1 4/2812011 10:15 PM 2 4/28/2011 10:15 PM 8 4 230 4/28/2011 10:30 PM 0 4/2812011 10:30 PM 3 4/28/2011 10:30 PM 0 4/2812011 10:30 PM 0 4/28/2011 10:30 PM 5 3 145 4/28/2011 10:45 PM 0 4/28/2011 10:45 PM 2 4/28/2011 10:45 PM 0 4/28/2011 10:45 PM 0 4/28/2011 10:45 PM 6 6 101 4/28/2011 11:00 PM 0 4/28/2011 11:00 PM 2 4/28/2011 11:00 PM 0 4/28/2011 11:00 PM 0 4/28/2011 11:00 PM 5 4 59 4/2812011 11:15 PM 0 4/28/2011 11:15 PM 1 4/28/2011 11:15 PM 0 4/28/2011 11:15 PM 0 4128/2011 11:15 PM 3 4 44 4/28/2011 11:30 PM 0 4128/2011 11:30 PM 0 4/28/2011 11:30 PM 0 4/28/2011 11:30 PM 0 4/28/2011 11:30 PM 0 3 4/28/2011 11:45 PM 0 4/28/2011 11:45 PM 0 4/28/2011 11:45 PM 0 4/28/2011 11:45 PM 0 4/28/2011 11:45 PM 3 4 4/28/2011 3216 3120 181 166 2632 2781 Total Site ADT 12,096 it Source: All Traffic Data Services, Inc. Prepared by Michael Read - TENW 5/9/2011 Page A-8 GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways Volume Volume Volume Volume Volume Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 3200 Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB Date Time NB Date Time EB WB Hourly Volume 4/29/2011 12:00 AM 0 4/29/2011 12:00 AM 0 4/29/2011 12:00 AM 0 4/29/2011 12:00 AM 0 4/29/2011 12:00 AM 2 2 4/29/2011 12:15 AM 0 4/29/2011 12:15 AM 3 4/29/2011 12:15 AM 0 4/29/2011 12:15 AM 0 4/29/2011 12:15 AM 2 5 4/29/2011 12:30 AM 0 4/29/2011 12:30 AM 0 4/29/2011 12:30 AM 0 4/29/2011 12:30 AM 0 4/29/2011 12:30 AM 0 0 4/29/2011 12:45 AM 1 4/29/2011 12:45 AM 0 4/29/2011 12:45 AM 0 4/29/2011 12:45 AM 0 4129/2011 12:45 AM 3 5 23 4/29/2011 01:00 AM 0 4/29/2011 01:00 AM 1 4/29/2011 01:00 AM 0 4/29/2011 01:00 AM 0 4/2912011 01:00 AM 2 0 22 4/29/2011 01:15 AM 1 4/29/2011 01:15 AM 1 4/29/2011 01:15 AM 0 412912011 01:15 AM 0 4/29/2011 01:15 AM 0 0 14 4/29/2011 01:30 AM 0 4/29/2011 01:30 AM 0 4/29/2011 01:30 AM 0 4/29/2011 01:30 AM 0 4/29/2011 01:30 AM 1 2 17 4/29/2011 01:45 AM 0 4/29/2011 01:45 AM 0 4/29/2011 01:45 AM 0 4/29/2011 01:45 AM 0 4129/2011 01:45 AM 1 1 10 4/29/2011 02:00 AM 0 4/29/2011 02:00 AM 0 4/29/2011 02:00 AM 0 4/2912011 02:00 AM 0 4/29/2011 02:00 AM 0 0 7 4/29/2011 02:15 AM 0 4/29/2011 02:15 AM 0 4/29/2011 02:15 AM 0 4/29/2011 02:15 AM 0 4/29/2011 02:15 AM 0 0 5 4/29/2011 02:30 AM 0 4/29/2011 02:30 AM 0 4/29/2011 02:30 AM 0 4/29/2011 02:30 AM 0 4/29/2011 02:30 AM 1 0 3 4/29/2011 02:45 AM 0 4/29/2011 02:45 AM 0 4/29/2011 02:45 AM 0 4/29/2011 02:45 AM 0 4/29/2011 02:45 AM 3 2 6 4129/2011 03:00 AM 0 4/29/2011 03:00 AM 0 4/29/2011 03:00 AM 0 4/29/2011 03:00 AM 0 4/29/2011 03:00 AM 1 0 7 4/29/2011 03:15 AM 0 4/29/2011 03:15 AM 0 4/29/2011 03:15 AM 0 4/29/2011 03:15 AM 0 4/29/2011 03:15 AM 1 1 9 4/29/2011 03:30 AM 0 4/29/2011 03:30 AM 0 4/29/2011 03:30 AM 0 4/29/2011 03:30 AM 0 4/29/2011 03:30 AM 0 0 B 4/29/2011 03:45 AM 1 4/29/2011 03:45 AM 0 4/29/2011 03:45 AM 0 4/29/2011 03:45 AM 0 4/29/2011 03:45 AM 1 0 5 4/2912011 04:00 AM 0 4/29/2011 04:00 AM 2 4/29/2011 04:00 AM 1 4/29/2011 04:00 AM 0 4/29/2011 04:00 AM 2 2 11 4/29/2011 04:15 AM 2 4/29/2011 04:15 AM 0 4/29/2011 04:15 AM 0 4/29/2011 04:15 AM 0 4/29/2011 04:15 AM 1 0 12 4/29/2011 04:30 AM 1 4/29/2011 04:30 AM 0 4/29/2011 04:30 AM 0 4/29/2011 04:30 AM 0 4/29/2011 04:30 AM 0 0 13 4129/2011 04:45 AM 0 4/29/2011 04:45 AM 0 4/2912011 04:45 AM 0 4/29/2011 04:45 AM 1 4/29/2011 04:45 AM 1 1 14 4/29/2011 05:00 AM 0 4/29/2011 05:00 AM 0 4/29/2011 05:00 AM 0 4/29/2011 05:00 AM 0 4/29/2011 05:00 AM 0 1 8 4/29/2011 05:15 AM 1 4/29/2011 05:15 AM 1 4/29/2011 05:15 AM 0 4/29/2011 05:15 AM 0 4/29/2011 05:15 AM 7 0 14 4/29/2011 05:30 AM 0 4/29/2011 05:30 AM 1 4129/2011 05:30 AM 0 4/29/2011 05:30 AM 0 4129/2011 05:30 AM 4 2 20 4/29/2011 05:45 AM 0 4/29/2011 05:45 AM 3 4/29/2011 05:45 AM 0 4/29/2011 05:45 AM 0 4/29/2011 05:45 AM 7 1 28 4/29/2011 06:00 AM 9 4/29/2011 06:00 AM 0 4/29/2011 06:00 AM 0 4/29/2011 06:00 AM 0 4/29/2011 06:00 AM 10 0 46 4/29/2011 06:15 AM 16 4/2912011 06:15 AM 0 4/29/2011 06:15 AM 0 4/29/2011 06:15 AM 0 4/29/2011 06:15 AM 16 3 72 4/29/2011 06:30 AM 62 ' 4/29/2011 06:30 AM 1 4/29/2011 06:30 AM 0 4/29/2011 06:30 AM 0 4/29/2011 06:30 AM 46 3 177 4/29/2011 06:45 AM 89 4/29/2011 06:45 AM 5 4/29/2011 06:45 AM 2 4/29/2011 06:45 AM 1 4/29/2011 06:45 AM 68 6 337 4129/2011 07:00 AM 70 4129/2011 07:00 AM 13 4/29/2011 07:00 AM 0 4/29/2011 07:00 AM 0 4/29/2011 07:00 AM 47 10 458 4/29/2011 07:15 AM 100 4/29/2011 07:15 AM 5 4/29/2011 07:15 AM 2 4/29/2011 07:15 AM 0 4/29/2011 07:15 AM 84 7 621 4/29/2011 07:30 AM 153 4/29/2011 07:30 AM 11 4/29/2011 07:30 AM 3 4/29/2011 07:30 AM 3 4/29/2011 07:30 AM 124 14 817 4/29/2011 07:45 AM 184 4/29/2011 07:45 AM 34 4/29/2011 07:45 AM 5 4/29/2011 07:45 AM 5 4/29/2011 07:45 AM 128 24 1026 4/29/2011 08:00 AM 72 4/29/2011 08:00 AM 27 4/29/2011 08:00 AM 4 4/29/2011 08:00 AM 4 4/29/2011 08:00 AM 72 6 1071 4/29/2011 08:15 AM 62 4/2912011 08:15 AM 16 4/29/2011 08:15 AM 4 4/29/2011 08:15 AM 4 4/29/2011 08:15 AM 48 14 1021 4/29/2011 08:30 AM 101 4/29/2011 08:30 AM 24 4/29/2011 08:30 AM 6 4/29/2011 08:30 AM 4 4/29/2011 08:30 AM 104 12 964 4/29/2011 08:45 AM 132 4/29/2011 08:45 AM 52 4/29/2011 08:45 AM 8 4/29/2011 08:45 AM 8 4/29/2011 08:45 AM 108 49 941 4/29/2011 09:00 AM 53 4/29/2011 09:00 AM 58 4/29/2011 09:00 AM 3 4/29/2011 09:00 AM 5 4/29/2011 09:00 AM 59 35 969 4/29/2011 09:15 AM 38 4129/2011 09:15 AM 14 4/29/2011 09:15 AM 3 4/29/2011 09:15 AM 6 4/29/2011 09:15 AM 41 20 943 4/29/2011 09:30 AM 58 4/29/2011 09:30 AM 28 4/2912011 09:30 AM 2 4/29/2011 09:30 AM 2 4/29/2011 09:30 AM 54 20 856 4/29/2011 09:45 AM 87 4/29/2011 09:45 AM 72 4/29/2011 09:45 AM 10 4/29/2011 09:45 AM 11 4/29/2011 09:45 AM 61 85 825 4/29/2011 10:00 AM 39 4/29/2011 10:00 AM 78 4/29/2011 10:00 AM 5 4/29/2011 10:00 AM 8 4/29/2011 10:00 AM 33 68 843 4129/2011 10:15 AM 45 4/29/2011 10:15 AM 25 4129/2011 10:15 AM 4 4/29/2011 10:15 AM 4 4/29/2011 10:15 AM 32 37 868 4/29/2011 10:30 AM 57 4/29/2011 10:30 AM 39 4/29/2011 10:30 AM 4 4/29/2011 10:30 AM 4 4/2912011 10:30 AM 46 31 885 4/29/2011 10:45 AM 58 4/29/2011 10:45 AM 87 4/29/2011 10:45 AM 6 4/29/2011 10:45 AM 9 4/29/2011 10:45 AM 55 85 859 4/29/2011 11:00 AM 32 4/29/2011 11:00 AM 87 4/29/2011 11:00 AM 4 4/29/2011 11:00 AM 4 4/29/2011 11:00 AM 26 85 866 4/29/2011 11:15 AM 30 4/29/2011 11:15 AM 51 4/29/2011 11:15 AM 5 4/29/2011 11:15 AM 5 4/29/2011 11:15 AM 30 67 907 4/29/2011 11:30 AM 48 4/2912011 11:30 AM 49 4/29/2011 11:30 AM 3 4/29/2011 11:30 AM 3 4/29/2011 11:30 AM 31 41 901 4/29/2011 11:45 AM 51 4/29/2011 11:45 AM 99 4/29/2011 11:45 AM 6 4/29/2011 11:45 AM 2 4/29/2011 11:45 AM 58 100 917 4/29/2011 12:00 PM 55 4/29/2011 12:00 PM 96 4/29/2011 12:00 PM 4 4/29/2011 12:00 PM 4 4/29/2011 12:00 PM 33 115 986 4/29/2011 12:15 PM 41 4/29/2011 12:15 PM 44 4/29/2011 12:15 PM 3 4/29/2011 12:15 PM 4 4/29/2011 12:15 PM 24 45 959 4/29/2011 12:30 PM 57 4/29/2011 12:30 PM 50 4/29/2011 12:30 PM 1 4/29/2011 12:30 PM 4 4/29/2011 12:30 PM 41 35 972 4/29/2011 12:45 PM 60 4/29/2011 12:45 PM 65 4/29/2011 12:45 PM 5 4/29/2011 12:45 PM 2 4/29/2011 12:45 PM 57 57 902 4/2912011 01:00 PM 34 4/29/2011 01:00 PM 88 4/29/2011 01:00 PM 4 4/29/2011 01:00 PM 4 4/29/2011 01:00 PM 22 81 828 - Sour Traffic Data Services, Inc. Prepared by Michae' - d - TENW 5/9/2011 A_9 GRCC Campus Trip Generation Study - April 2011 Daily Traffic Machine Counts at Site Driveways v Volume Volume Volume Volume Volume a Site Code: 01 Site Code: 02 Site Code: 03 Site Code: 04 Site Code: 05 DRIVEWAY 1 Western Entry on SE 320th DRIVEWAY 2 Western Exit on SE 320th Load/Unload Entry on SE 320th Load/Unload Exit on SE 320tl Main Campus Entry/Exit at SE 320TH ST east of 124TH AVE SE Total Site Date Time SB Date Time NB Date Time SB Date Time NB Date Time EB WB Hourly Volume 4/29/2011 01:15 PM 32 4/29/2011 01:15 PM 51 4/29/2011 01:15 PM 4 4/29/2011 01:15 PM 3 4129/2011 0115 PM 24 44 825 4/2912011 01:30 PM 24 4/29/2011 01:30 PM 51 4/29/2011 01:30 PM 5 4/29/2011 01:30 PM 5 4/29/2011 01:30 PM 26 38 786 4/29/2011 01:45 PM 36 4/29/2011 01:45 PM 84 4/29/2011 01:45 PM 5 4/29/2011 01:45 PM 4 4129(2011 01:45 PM 29 71 769 4/29/2011 02:00 PM 21 4/29/2011 02:00 PM 71 4/29/2011 02:00 PM 4 4/29/2011 02:00 PM 2 4/29/2011 02:00 PM 19 85 738 4/29/2011 02:15 PM 23 4/29/2011 02:15 PM 61 4(29/2011 02:15 PM 3 4129/2011 02:15 PM 4 4129/2011 02:15 PM 26 52 749 4/29/2011 02:30 PM 22 4/29/2011 02:30 PM 54 4/29/2011 02:30 PM 3 4/29/2011 02:30 PM 3 4/29/2011 02:30 PM 25 70 777 4/29/2011 02:45 PM 19 4(29/2011 02:45 PM 62 4/29/2011 02:45 PM 6 4/29/2011 02:45 PM 7 4/29/2011 02:45 PM 30 51 723 4/29/2011 03:00 PM 21 4/29/2011 03:00 PM 75 4/29/2011 03:00 PM 3 4/29/2011 03:00 PM 1 4/29/2011 03:00 PM 17 55 693 4/29/2011 03:15 PM 22 4/29/2011 03:15 PM 40 4/29/2011 03:15 PM 1 4/29/2011 03:15 PM 2 4129/2011 03:15 PM 33 25 647 4/29/2011 03:30 PM 21 4/29(2011 03:30 PM 56 4(29(2011 03:30 PM 2 4/29(2011 03:30 PM 2 4/29/2011 03:30 PM 50 37 638 4(29(2011 03:45 PM 15 4/29/2011 03:45 PM 46 4/29/2011 03:45 PM 1 4/29/2011 03:45 PM 0 4/29/2011 03:45 PM 45 20 590 4/29/2011 04:00 PM 7 4129/2011 04:00 PM 46 4/29/2011 04:00 PM 3 4/29/2011 04:00 PM 0 4129/2011 04:00 PM 44 16 534 4/29/2011 04:15 PM 7 4/29/2011 04:15 PM 33 4/29/2011 04:15 PM 1 4/29/2011 04:15 PM 1 4/29/2011 04:15 PM 40 21 514 4/29/2011 04:30 PM 8 4/29/2011 04:30 PM 22 4/29/2011 04:30 PM 1 4/29/2011 04:30 PM 3 4/29/2011 04:30 PM 33 46 459 4/29/2011 04:45 PM 10 4/29/2011 04:45 PM 18 4/2912011 04:45 PM 0 4/29/2011 04:45 PM 1 4/29/2011 04:45 PM 22 58 441 4/29/2011 05:00 PM 3 4/29/2011 05:00 PM 30 4/29/2011 05:00 PM 1 4129/2011 05:00 PM 1 4/29/2011 05:00 PM 20 41 421 4/29/2011 05:15 PM 2 4/29/2011 05:15 PM 27 4/2912011 05:15 PM 3 4/29/2011 05:15 PM 2 4/29/2011 05:15 PM 8 37 397 4/29/2011 05:30 PM 6 4/29/2011 05:30 PM 12 4/29/2011 05:30 PM 2 4(29/2011 05:30 PM 2 4/29/2011 05:30 PM 7 27 340 4/29/2011 05:45 PM 1 4/29/2011 05:45 PM 12 4/29/2011 05:45 PM 0 4129/2011 05:45 PM 1 4/29/2011 05:45 PM 9 20 274 4/29/2011 06:00 PM 5 4/29/2011 06:00 PM 20 4(29(2011 06:00 PM 2 4/29/2011 06:00 PM 1 4/29/2011 06:00 PM 10 13 229 4/29/2011 06:15 PM 3 4/29/2011 06:15 PM 6 4/29/2011 06:15 PM 0 4/29/2011 06:15 PM 0 4/29/2011 06:15 PM 8 8 175 4/29/2011 06:30 PM 3 4/29/2011 06:30 PM 4 4/29/2011 06:30 PM 0 4/29/2011 06:30 PM 0 4/2912011 06:30 PM 5 6 137 4/29/2011 06:45 PM 0 4/29/2011 06:45 PM 3 4/29/2011 06:45 PM 0 4/29/2011 06:45 PM 0 4/29/2011 06:45 PM 8 6 111 4/29(2011 07:00 PM 3 4/29/2011 07:00 PM 7 4/29/2011 07:00 PM 0 4(29(2011 07:00 PM 0 4/29/2011 07:00 PM 8 17 95 4/29/2011 07:15 PM 2 4/29/2011 07:15 PM 4 4/29/2011 07:15 PM 1 4/29/2011 07:15 PM 0 4/29/2011 07:15 PM 12 18 107 4/29/2011 07:30 PM 2 4/29/2011 07:30 PM 4 4/29/2011 07:30 PM 1 4/2912011 07:30 PM 1 4/29/2011 07:30 PM 14 14 125 4/29/2011 07:45 PM 5 4/29/2011 07:45 PM 10 4/29/2011 07:45 PM 0 4/29/2011 07:45 PM 0 4/29/2011 07:45 PM 7 13 143 4/29/2011 08:00 PM 0 4/29/2011 08:00 PM 3 4/29/2011 08:00 PM 1 4/29/2011 08:00 PM 1 4/29/2011 08:00 PM 7 9 129 4/29/2011 08:15 PM 1 4/29/2011 08:15 PM 5 4/29/2011 08:15 PM 0 4/29/2011 08:15 PM 0 4/29/2011 08:15 PM 9 10 117 4/29/2011 08:30 PM 0 4/29/2011 08:30 PM 3 4/29/2011 08:30 PM 2 4/29/2011 08:30 PM 2 4/29/2011 08:30 PM 10 14 112 4/29/2011 08:45 PM 2 4/29/2011 08:45 PM 1 4/29/2011 08:45 PM 0 4/29/2011 08:45 PM 0 4/29/2011 08:45 PM 6 15 101 4/29/2011 09:00 PM 2 4/29/2011 09:00 PM 7 4/29/2011 09:00 PM 0 4/29/2011 09:00 PM 0 4/29/2011 09:00 PM 4 13 106 4/2912011 09:15 PM 0 4/29/2011 09:15 PM 1 4/29/2011 09:15 PM 0 4/29/2011 09:15 PM 0 4/29/2011 09:15 PM 12 8 102 4/29/2011 09:30 PM 0 4/29/2011 09:30 PM 1 4/29/2011 09:30 PM 1 4/29(2011 09:30 PM 1 4/29/2011 09:30 PM 8 4 86 4/29/2011 09:45 PM 1 4/29(2011 09:45 PM 4 4129/2011 09:45 PM 0 4/29/2011 09:45 PM 0 4/29/2011 09:45 PM 3 5 75 4129/2011 10:00 PM 0 4129(2011 10:00 PM 2 4/29/2011 10:00 PM 1 4/29/2011 10:00 PM 1 4/2912011 10:00 PM 9 8 70 4/29/2011 10:15 PM 4 4/2912011 10:15 PM 0 4/29/2011 10:15 PM 0 4/29/2011 10:15 PM 0 4/29/2011 10:15 PM 12 5 70 4/29/2011 10:30 PM 0 4/29/2011 10:30 PM 2 4/29/2011 10:30 PM 1 4/29/2011 10:30 PM 1 4/29/2011 10:30 PM 5 7 71 4/29/2011 10:45 PM 0 4/29/2011 10:45 PM 4 4/29/2011 10:45 PM 0 4/29/2011 10:45 PM 0 4(29/2011 10:45 PM 6 7 75 4/29/2011 11:00 PM 1 4/29/2011 11:00 PM 0 4/2912011 11:00 PM 1 4/29/2011 11:00 PM 1 4/29/2011 11:00 PM 4 7 68 4/29/2011 11:15 PM 0 4/29/2011 11:15 PM 1 4/2912011 11:15 PM 0 4/29(2011 11:15 PM 0 4129/2011 11:15 PM 9 7 64 4/29/2011 11:30 PM 1 4/29/2011 11:30 PM 0 4/29/2011 11:30 PM 0 4/29/2011 11:30 PM 0 4/2912011 11:30 PM 4 10 4/29(2011 11:45 PM 0 4/29/2011 11:45 PM 2 4/29/2011 11:45 PM 0 4/29/2011 11:45 PM 0 4/29/2011 11:45 PM 8 5 4129/2011 2235 2175 166 164 2293 2223 Total Site ADT 9,256 Total 5-Day Survey 15,052 14,574 923 13,116 12,942 Total 5-Day Volume 57,530 Average ADT 11,506 Note: Location 3a, the driveway serving the existing gravel parking lot, could not be surveyed during machine counting as the vehicle approach angles would have resulted in inaccurate data. This public parking lot, however, was surveyed during peak hour observations to capture peak arrival and departure patterns of this off-campus public parking lot. Source: All Traffic Data Services, Inc. Prepared by Michael Read - TENW 5/9/2011 Page A-10 GRCC Campus Trip Generation Study - April 2011 Turning Movement Counts at Site Driveways GRCC Campus Trip Generation Study AM Turning Movement Counts Location 1 Location 2 Location 3 Location 3a Location 4 Location 5 Time EB Right WB Left NB Left NB Right EB Right WB Left NS Ri ht SB Left WB Left WB Right EB Right WB Left NB Left NB Right EB Thru SB Left WB Thru WB Ri ht 15-Minute Sum 7:00 AM 61 51 1 5 1 0 2 0 2 0 1 1 0 0 16 48 0 7 196 . 7:15 AM 65 56 1 7 0 1 6 0 0 0 0 0 0 2 22 69 1 7 237 7:30 AM 92 85 6 9 1 2 15 1 1 0 0 0 0 2 32 147 1 15 409 7:45 AM 100 116 7 24 1 3 3 0 0 0 1 1 1 4 34 176 5 16 492 1,334 8:00 AM 36 36 11 16 0 3 0 0 0 0 0 1 0 4 18 74 1 9 209 1,347 8:15 AM 38 32 2 8 0 2 0 0 0 0 0 0 0 2 17 40 4 6 151 1,261 8:30 AM 45 45 8 11 0 8 0 1 0 0 0 0 0 5 26 98 2 15 264 1,116 8:45 AM 60 75 27 36 1 4 1 0 1 0 1 1 1 6 30 122 9 31 406 1,030 497 496 63 116 4 23 27 2 4 0 3 4 2 25 195 774 23 106 2,364 PM Turning Movement Counts Location 1 Location 2 Location 3 Location 3a Location 4 Location 5 Time EB Right WB Left NB Left NB Right EB Right WB Left NB Right SB Left WB Left WB Right EB Right WB Left NB Left NB Right EB Thru SB Left WB Thru WB E! A 15-Minute Sum 4:00 PM 5 20 27 42 0 4 2 0 7 1 0 0 0 1 9 24 7 36 185 4:15 PM 12 14 22 40 0 2 2 0 1 0 0 0 2 1 6 25 13 20 160 4:30 PM 12 16 25 46 0 1 3 1 5 0 0 1 1 3 13 18 9 33 187 4:45 PM 11 26 22 24 1 1 3 0 1 1 0 0 1 1 17 25 21 36 191 723 5:00 PM 8 10 10 19 1 6 1 0 1 0 1 0 1 5 11 33 22 58 187 725 5:15 PM 17 23 24 20 1 1 0 0 0 0 0 0 2 2 10 26 13 36 175, 740 5:30 PM 24 32 13 27 0 0 2 0 0 0 0 0 0 2 13 42 13 34 202 755 5:45 PM 38 74 9 16 1 1 1 0 0 0 0 0 0 1 16 42 6 27 232 796 127 215 152 234 4 16 14 1 15 2 1 1 7 16 95 235 104 280 1,519 EB - Eastbound WB - Westbound NB - Northbound SB - Southbound Source: All Data Traffic Services, Inc. Prepared by Michael Read - TENW 5/9/2011 Page A-11 Peak Hour Summary Mark Skaggs (206) 251-0300 120th PI SE & SE 320th St 7:00 AM to 8:00 AM Wednesday, April 27, 2011 y a w 0 F Fig] ❑5 15 1 3 ~ y y SE 320th St Peds 3 R 3 64 E 49 360 N 308 o W Na ) 2 a s a F523] 203 + 206 318 y Peds 12 SE 320th St R T 71 0 0 0 6z1 ❑o 3 m .y D Approach PHF HV% Volume EB 0.78 0.8% 523 WB 0.69 0.0% 360 NB 0.00 0.0% 0 SB 0.79 0.0% 19 Intersection 0.74 0.4% 902 Count Period: 7:00 AM to 9:00 AM Total Vehicle Summary In. Out 1 s s 0 0 > u_ 15 1 3 HV 0.0 a PHF 0.69 % 2 3 Mark Skaggs Out 64 360 In (206) 251-0300 203 ♦ o ly r ♦ 49 In 523 206 Out 318 s 308 12 HV 0.8% 120th PI SE & SE 320th St PHF 0.78 t o 0 Wednesday, April 27, 2011 Out In 7:00 AM to 9:00 AM 627 0 Peak Hour Summary 7:00 AM to 8:00 AM 15-Minute Interval Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 1 120th PI SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 7:00 AM 0 0 0 0 0 0 6 0 0 37 61 2 51 7 1 0 163 1 0 0 0 7:15 AM 0 0 0 0 0 0 5 0 0 50 65 0 56 13 1 0 190 0 0 0 0 7:30 AM - 0 0 0 0 2 0 1 0 1 49 92 0 85 14 1 0 245 1 4 0 0 7:45 AM 0 0 0 0 1 1 3 0 1 67 100 2 116 15 0 0 304 1 8 1 0 8:00 AM 0 0 0 0 3 0 2 0 5 22 36 3 36 18 3 1 125 1 5 1 0 8:15 AM 0 0 0 0 2 0 1 0 1 28 38 1 32 13 1 0 116 1 1 0 1 8:30 AM 0 0 0 0 1 0 5 0 0 51 45 1 45 18 0 0 165 1 0 0 0 8:45 AM 0 0 0 0 1 0 3 0 1 44 60 1 75 47 3 0 234 0 12 2 0 1 Total Survey 0 0 0 0 10 1 26 0 9 348 497 10 496 145 10 1 1,542 6 30 4 1 Peak Hour Summary 7:00 AM to 8:00 AM B Northbound Southbound Eastbound Westbound Pedestrians By Approach Driveway 1 120th PI SE SE 320th St SE 320th St Total Crosswalk In Out Total HV In Out Total HV In Out Total HV In Out Total HV Nort h South East West _ Volume 0 627 627 0 19 5 24 0 523 64 587 4 360 206 566 0 902 3 12 1 0 %HV 0.0% 0.0% 0.8% 0.0% 0.4% PHF 0.00 0.79 0.78 0.69 0.74 B Northbound Southbound Eastbound Westbound By Driveway 1 120th PI SE SE 320th St SE 320th St Total Movement L T R Total L T R Total L T R Total L T R Total Volume 0 0 0 0 3 1 15 19 2 203 318 523 308 49 3 360 902 PHF 0.00 0.00 0.00 0.00 0.38 0.25 0.63 0.79 0.50 0.76 0.80 0.78 0.66 0.82 0.75 0.69 0.74 Rolling Hour Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 1 120th PI SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 7:00 AM 0 0 0 0 3 1 15 0 2 203 318 4 308 49 - 3 0 902 3 12 1 0 7:15 AM 0 0 0 0 6 1 11 0 7 188 293 5 293 60 5 1 864 3 17 2 0 7:30 AM 0 0 0 0 8 1 7 0 8 166 266 6 269 60 5 1 790 4 18 2 1 7:45 AM 0 0 0 0 7 1 11 0 7 168 219 7 229 64 4 1 710 4 14 2 1 8:00 AM 0 0 0 0 7 0 11 0 7 145 179 6 188 96 7 1 640 3 18 3 1 Peak Hour Summary Mark Skaggs (206) 251-0300 Driveway 2 & SE 320th St 7:15 AM to 8:15 AM Wednesday, April 27, 2011 SE 320th St Peds 0 F367] F 342 F344] N I 2 o o tll N IL S a 184 184 F240] 0 V Peds 9 SE 320th St R 71 25 56 ❑ F81] N 3 as O Approach PHF HV% Volume EB 0.75 2.2% 184 WB 0.67 0.3% 344 NB 0.65 0.0% 81 SIB 0.00 0.0% 0 Intersection 0.69 0.8% 609 Count Period: 7:00 AM to 9:00 AM Total Vehicle Summary o 0 In 0"` HV 0.3% A Allow- EL PHF 0.67 1 L Mark Skaggs Out 367 344 In (206) 251-0300 184 ♦ o tY o ♦ 342 In 184 240 Out 07~ S 1-2 HV 2.2% 9 Driveway 2 & SE 320th St PHF 0.75 ♦ o 25 56 6 0 Wednesday, April 27, 2011 Out In 7:00 AM to 9:00 AM 2 81 Peak Hour Summary 7:15 AM to 8:15 AM 15-Minute Interval Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 2 Driveway 2 SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 7:00 AM 1 5 0 35 0 1 1 55 0 97 0 0 0 0 7:15 AM 1 7 0 45 0 1 0 68 0 121 0 0 0 0 7:30 AM 6 9 0 54 0 0 0 98 0 167 0 0 0 0 7:45 AM 7 24 0 61 0 2 2 127 0 221 0 5 0 0 8:00 AM 11 16 0 24 0 1 0 49 1 100 0 4 0 0 8:15 AM 2 8 0 31 0 2 0 45 0 86 0 1 0 0 8:30 AM 8 11 0 51 0 0 0 52 0 122 0 0 0 0 8:45 AM 27 36 0 46 0 2 0 92 201 5 0 0 Total Surve63 116 347 0 3 586 1 1,115 0 15 0 0 Peak Hour Summary 7:15 AM to 8:15 AM By Northbound Southbound Eastbound Westbound Pedestrians Approach Driveway 2 Driveway 2 SE 320th St SE 320th St Total Crosswalk In Out Total HV In Out Total In Out Total HV In Out Total HV Nort h South East West Volume 81 2 83 0 0 0 0 184 367 551 4 344 240 584 1 609 0 9 0 0 %HV 0.0% 0.0% 2.2% 0.3% 0.8% PHF 0.65 0.00 0.75 0.67 0.69 B Northbound Southbound Eastbound Westbound By Driveway 2 Driveway 2 SE 320th St SE 320th St Total Movement L' R Total Total T 1 R Total L T Total Volume 25 1 ~ 56 81 0 184 0 184 2 342 344 609 PHF 0.57 0.58 0.65 0.00 0.75 0.00 0.75 0.25 0.67 0.67 0.69 Rolling Hour Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 2 Driveway 2 - SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 7:00 AM 15 45 0 195 0 4 3 348 0 606 0 5 0 0 7:15 AM 25 56 0 184 0 4 2 342 1 609 0 9 0 0 7:30 AM 26 57 0 170 0 5 2 319 1 574 0 10 0 0 7:45 AM 28 59 0 167 0 5 2 273 1 529 0 10 0 0 8:00 AM 48 71 0 152 0 5 0 238 1 509 0 10 0 0 Peak Hour Summary ,.a ' . Mark Skaggs (206)251-0300 - 122nd Ave SE & SE 320th St 7:00 AM to 8:00 AM Wednesday, April 27, 2011 W CO Q a N 28 42 6 0 22 y y SE 320th St Peds 2 R 30 356 E 350 F386] it 6 N N a v 12 71 a s aL F 240 225 4 247 3 11 Peds 0 SE 320th St R T 71 0 0 0 w U) ❑s FO Q a N N Approach PHF HV% Volume EB 0.85 1.7% 240 WB 0.70 0.0% 386 NB 0.00 0.0% 0 SB 0.54 0.0% 28 Intersection 0.74 0.6% 654 Count Period: 7:00 AM to 9:00 AM In Out Total Vehicle Summary o u~ 28 42 00 6 0 22 HV 0.0 o_ PHF 0.70 - % 2 a 12 J r +1 30 Mark Skaggs - Out 356 386 In (206) 251-0300 In 240 225 ♦ o Y ± ^a 4- 350 247 Out S ~ 3~ 6 HV 1.7% 0 122nd Ave SE & SE 320th St PHF 0.85 ♦ o °o 0 0 0 00 Wednesday, April 27, 2011 09 t In x 7:00 AM to 9:00 AM Peak Hour Summary 7:00 AM to 8:00 AM 15-Minute Interval Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 7:00 AM 0 0 0 0 7 0 3 0 2 44 1 2 . 0 57 4 0 118 0 0 3 0 7:15 AM 0 0 0 0 2 0 0 0 2 57 0 0 1 67 6 0 135 0 0 8 0 7:30 AM 0 0 0 0 3 0 0 0 8 54 1 1 2 103 9 0 180 1 0 11 0 7:45 AM 0 0 0 0 10 0 3 0 0 70 1 1 3 123 11 0 221 1 0 25 0 8:00 AM 0 0 0 0 2 0 0 0 0 39 0 3 3 35 5 0 84 1 0 4 0 8:15 AM 0 0 0 0 2 0 0 0 0 37 0 0 2 48 1 0 90 3 1 1 0 830 AM 0 0 1 0 1 0 4 0 3 59 0 1 8 51 3 0 130 1 0 4 0 8:45 AM 0 0 0 0 7 0 3 0 7 77 1 1 4 96 5 0 200 0 0 13 0 Total Survey 0 0 1 0 34 0 13 0 22 437 4 9 23 580 44 0 1,158 7 1 69 0 Peak Hour Summary 7:00 AM to 8:00 AM 6 Northbound Southbound Eastbound Westbound Pedestrians By 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Total Crosswalk Approach In Out Total HV In Out Total HV In Out Total HV In Out Total HV North South East West _ Volume 0 9 9 0 28 42 70 0 240 356 596 4 386 247 633 0 654 2 0 47 0 %HV 0.0% 0.0% 1.7% 0.0% 0.6% PHF 0.00 0.54 0.85 0.70 0.74 B Northbound Southbound Eastbound Westbound By Movement 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Total L T R Total L T R Total L T R Total L T R Total Volume 0 0 0 0 22 0 6 28 12 225 3 240 6 350 30 386 654 PHF 0.00 0.00 0.00 0.00 0.55 0.00 0.50 0.54 0.38 0.80 0.75 0.85 0.50 0.71 0.68 0.70 0.74 Rolling Hour Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 7:00 AM 0 0 0 0 22 0 6 0 12 225 3 4 6 350 30 0 654 2 0 47 0 7:15 AM 0 0 0 0 17 0 3 0 10 220 2 5 9 328 31 0 620 3 0 48 0 7:30 AM 0 0 0 0 17 0 3 0 8 200 2 5 10 309 26 0 575 6 1 41 0 7:45 AM 0 0 1 0 15 0 7 0 3 205 1 5 16 257 20 0 525 6 1 34 0 8:00 AM 0 0 1 0 12 0 7 0 10 212 1 5 17 230 14 0 504 5 1 22 0 Peak Hour Summary i Mark Skaggs (206)251-0300 - 122nd Ave SE & Parking Lot 7:00 AM to 8:00 AM Wednesday, April 27, 2011 Q 'o N F11 1 01 0 1 40 y Peds 0 R ❑o F o o a aL s a F27] Peds 0 Parking Lot T ~ 0 26 W ❑ F26 , Q 'a c N N Approach PHF HV% Volume EB 0.00 0.0% 0 WB 0.38 0.0% 3 NB 0.43 0.0% 26 SB 0.25 0.0% 1 Intersection 0.44 0.0% 30 Count Period: 7:00 AM to 9:00 AM Total Vehicle Summary In Out q N 1 Q O O LL 0 1 HV 0.0% CL ~ ~ PHF 0.38 0 ^r +.-0 Mark Skaggs Out 0 3 In (206)251 -0300 In 0 ♦ o FY c o 27 Out S r 3 V~ 11V 0.0% ;r,.~ d Ave SE $ Parking Lot PHF o.0o 122n 0 26 0 0 Wednesday, April 27, 2011 Out In 7:00 AM to 9:00 AM 3 26 Peak Hour Summary 7:00 AM to 8:00 AM 15-Minute Interval Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Interval Crosswalk Time T R HV L T HV L R HV Total North South East West 7:00 AM 0 2 0 0 0 0 2 0 0 4 0 0 0 0 7:15 AM 0 6 0 0 0 0 0 0 0 6 0 0 0 0 7:30 AM 0 15 0 1 0 0 1 0 0 17 0 0 0 0 7:45 AM 0 3 0 0 0 0 0 0 0 3 0 0 0 0 8:00 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:15 AM 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8:30 AM 0 0 0 1 0 0 0 0 0 1 0 0 0 0 8:45 AM 0 1 0 0 0 to 1 0 0 2 0 Total Survey 0 27 0 2 0 4 0 0 33 0 0 2 0 Peak Hour Summary 7:00 AM to 8:00 AM B Northbound Southbound Eastbound Westbound Pedestrians By 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Total Crosswalk Approach In Out Total HV In Out Total HV In Out Total In Out Total HV North South East West Volume 26 3 29 0 1 0 1 0 0 0 0 3 27 30 0 30 0 0 0 0 %HV 0.0% 0.0% 0.0% 0.0% 0.0% PHF 0.43 0.25 0.00 0.38 0.44 B Northbound Southbound Eastbound Westbound By 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Total Movement T R Total L T Total Total L R Total Volume 0 26 26 1 0 1 0 3 0 3 30 PHF 0.00 0.43 0.43 0.25 0.00 0.25 0.00 0.38 0.00 0.38 0.44 Rolling Hour Summary 7:00 AM to 9:00 AM Interval Northbound Southbound - Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Interval Crosswalk Time T R HV L T HV L R HV Total North South East West 7:00 AM 0 26 0 1 0 0 3 T-7-7-0 30 0 0 0 0 7:15 AM 0 24 0 1 0 0 1 0 0 26 0 0 0 0 7:30 AM 0 18 0 1 0 0 1 0 0 20 0 0 0 0 7:45 AM 0 3 0 1 0 0 0 0 0 4 0 0 0 0 8700 AM 0 1 0 1 0 0 1 0 0 3 0 0 2 0 Peak Hour Summary Mark Skaggs (206) 251-0300 Driveway 4 & SE 320th St 7:00 AM to 8:00 AM Wednesday, April 27, 2011 SE 320th St Peds o F392 f 391 393 2 CD o N N (L s a 259 257 265 2 Peds 6 SE 320th St R 71 F 1-1 F8-1 F 9-1 a3i O Approach PHF HV% Volume EB 0.67 1.5% 259 WB 0.66 0.0% 393 NB 0.45 0.0% 9 SB 0.00 0.0% 0 Intersection 0.66 0.6% 661 Count Period: 7:00 AM to 9:00 AM r rr Total Vehicle Summary In Out 0 0 o a 6 0 > u_ H V 0.0% 0 PHF 0.66 0 MAIN :1 on. EL j w L Mark Skaggs Out 392 393 In (206) 251-0300 257 ♦ o fy c o ♦ 391 In 259 2 Y 2 265 Out S HV 1.5% 6 o v Driveway 4 & SE 320th St PHF 0.67 )7;1 1 8 o 0 Wednesday, April 27, 2011 Out In = x 7:00 AM to 9:00 AM 4 9 Peak Hour Summary 7:00 AM to 8:00 AM 15-Minute Interval Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 4 Driveway 4 SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 7:00 AM 0 0 0 44 1 0 1 60 0 106 0 0 0 0 7:15 AM 0 2 0 62 0 2 0 80 0 144 0 1 0 0 7:30 AM 0 2 0 55 0 0 0 103 0 160 0 1 0 0 7:45 AM 1 4 0 96 1 2 1 148 0 251 0 4 0 0 8:00 AM 0 4 0 47 0 2 1 42 0 94 0 2 0 0 8:15 AM 0 2 0 40 0 2 0 53 0 95 0 0 0 0 8:30 AM 0 5 0 59 0 0 0 61 0 125 0 0 0 0 8:45 AM 1 6 111 0 85 1 2 1 95 0 189 0 1 0 0 1 Total Survey 2 25 0 488 3 10 4 642 0 1,164 0 9 0 0 Peak Hour Summary 7:00 AM to 8:00 AM B Northbound Southbound Eastbound Westbound Pedestrians By Drivewa 4 Driveway 4 SE 320th St SE 320th St Total Crosswalk Approach In Out Total HV In Out Total In Out Total HV In Out Total HV North South East West Volume 9 4 13 0 0 0 0 259 392 651 4 393 265 658 0 661 0 6 0 0 %HV 0.0% 0.0% 1.5% 0.0% 0.6% PHF 0.45 0.00 0.67 0.66 0.66 B Northbound Southbound Eastbound Westbound y Driveway 4 Driveway 4 Movement SE 320th St SE 320th St Total L R Total Total T R Total L T Total Volume 1 8 9 0 257 2 259 2 391 393 661 PHF 0.25 0.50 0.45 0.00 0.67 0.50 0.67 0.50 0.66 0.66 0.66 Rolling Hour Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 4 Driveway 4 SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 7:00 AM 1 8 0 257 2 4 2 391 0 661 0 6 0 0 7:15 AM 1 12 0 260 1 6 2 373 0 649 0 8 0 0 7:30 AM 1 12 0 238 1 6 2 346 0 600 0 7 0 0 7:45 AM 1 15 0 242 1 6 2 304 0 565 0 6 0 0 8:00 AM 1 17 0 231 1 6 2 251 0 503 0 3 0 0 • Ll 1f N • , + Peak Hour Summary Mark Skaggs (206) 251-0300 124th Ave SE & SE 320th St 7:15 AM to 8:15 AM Wednesday, April 27, 2011 W y Q w N F831] F2181 F 65 [466] 3 F ~ y SE 320th St Peds 1 R 47 373 E 8 55 F N n CD N Fr r M N 171 71 a s a F277] 106 572 Peds 0 SE 320th St Approach PHF HV% Volume EB 0.67 2.2% 277 WB 0.65 1.8% 55 NB 0.00 0.0% 0 SB 0.68 0.2% 831 Intersection 0.68 0.8% 1,163 Count Period: 7:00 AM to 9:00 AM In Out Total Vehicle Summary N IR 831 218 00 > LL 365 466 a 4J L1-- HV 1.8% PHF 0.65 1 - Y 171 +147 Mark Skaggs Out 373 ^ 55 In (206) 251-0300 In 277 106 N rY E o 4-8 572 Out S 0 HV 2.2% 124th Ave SE & SE 320th St PHF 0.67 o °o 0 0 Wednesday, April 27, 2011 Out t In > Q. 7:00 AM to 9:00 AM Peak Hour Summary 7:15 AM to 8:15 AM 15-Minute Interval Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 124th Ave SE 124th Ave SE SE 320th St SE 320th St Interval Crosswalk Time L R HV L T HV T R HV Total North South East West 7:00 AM 48 59 1 29 16 0 0 7 0 159 0 0 4 1 7:15 AM 69 77 0 32 22 2 1 7 1 208 0 0 5 0 7:30 AM 147 103 1 29 32 0 1 15 0 327 1 0 10 7 7:45 AM 176 130 0 69 34 2 5 16 0 430 0 0 66 9 8:00 AM 74 55 1 41 18 2 1 9 0 198 0 0 26 5 8:15 AM 40 43 0 27 17 2 4 6 0 137 0 0 3 0 8:30 AM 98 59 0 36 26 0 2 15 0 236 0 0 6 5 8:45 AM 122 96 0 59 30 2 9 31 0 347 0 0 70 16 Total Survey 774 622 3 322 195 10 23 106 1 2,042 1 0 190 43 Peak Hour Summary 7:15 AM to 8:15 AM B Northbound Southbound Eastbound Westbound Pedestrians By 124th Ave SE 124th Ave SE SE 320th St SE 320th St Total Crosswalk Approach In Out Total In Out Total HV In Out Total HV In Out Total HV North South East West Volume 0 0 0 831 218 1,049 2 277 373 650 6 55 572 627 1 1,163 1 0 107 21 %HV 0.0% 0.2% 2.2% 1.8% 0.8% PHF 0.00 0.68 0.67 0.65 0.68 B Northbound Southbound Eastbound Westbound By 124th Ave SE 124th Ave SE SE 320th St SE 320th St Total Movement Total L R Total L T Total T R Total Volume 0 466 365 831 171 106 277 8 47 55 1,163 PHF 0.00 0.66 0.70 0.68 0.62 0.78 0.67 0.40 0.73 0.65 0.68 Rolling Hour Summary 7:00 AM to 9:00 AM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 124th Ave SE 124th Ave SE SE 320th St SE 320th St Interval Crosswalk Time L R HV L T TV T R HV Total North South East MWe 700 AM 440 369 2 159 104 7 45 1 1,124 1 0 85 7:1AM 466 2 171 106 8 47 1 1,163 1 0 107 730 AM 437 332 166 101 11 46 0 1,092 1 0 105 7:45 AM 388 281 173 95 12 46 0 1,001 0 0 101 8:00 AM 31 163 91 16 61 0 918 0 0 105 Peak Hour Summary Mark Skaggs (206) 251-0300 120th PI SE & SE 320th St 5:0013M to 6:00 PM Wednesday, April 27, 2011 W CO a e 0 N F22 F20] 12 0 10 ~ y y SE 320th St Peds 3 R 9 00 F 188 F336] 2 F IC 139 o w o N N .o s 11 71 (L S aL F208] 110 121 87 Peds 8 SE 320th St R + 71 0 0 1 226 1❑ d 'i O Approach PHF HV% Volume EB 0.76 1.4% 208 WB 0.76 0.0% 336 NB 0.25 0.0% 1 SB 0.69 0.0% 22 Intersection 0.78 0.5% 567 Count Period: 4:00 PM to 6:00 PM In Out o zz 20 Total Vehicle Summary 00 12 0 10 a HV 0.0% PHF 0.76 - 3 Mark Skaggs Out 200 336 In (206) 251-0300 110-0. o ry. E o 188 In 208 ♦ 121 Out 87 139 S +1 8 HV 1.4% 120th PI SE & SE 320th St PHF 0.76 0 0 1 6 0 Wednesday, April 27, 2011 Out In 4:00 PM to 6:00 PM 226 Peak Hour Summary 5:00 PM to 6:00 PM 15-Minute Interval Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 1 120th PI SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 4:00 PM 0 0 0 0 0 0 2 0 3 15 5 0 20 58 0 0 103 0 2 0 0 4:15 PM 0 0 0 0 5 0 1 0 5 16 12 2 14 52 3 0 108 0 1 0 0 4:30 PM 0 0 0 0 2 0 4 0 4 25 12 0 16 63 1 0 127 0 2 1 0 4:45 PM 0 0 0 0 1 1 6 0 6 35 11 2 26 69 0 0 155 0 2 3 0 5:00 PM 0 0 1 0 2 0 2 0 2 22 8 0 10 56 2 0 105 1 2 0 0 5:15 PM 0 0 0 0 3 0 5 0 5 30 17 2 23 53 4 0 140 1 0 0 0 5:30 PM 0 0 0 0 3 0 3 0 2 30 24 1 32 46 0 0 140 0 5 0 0 5:45 PM 0 0 0 0 2 0 2 0 2 28 38 0 74 33 3 0 182 1 1 to 0 Total Survey 0 0 1 0 18 1 25 0 29 201 127 7 215 430 13 0 1,060 0 Peak Hour Summary 5:00 PM to 6:00 PM L3 Northbound Southbound Eastbound Westbound Pedestrians By Driveway 1 120th PI SE SE 320th St SE 320th St Total Crosswalk Approach In Out Total HV In Out Total HV In Out Total HV In Out Total HV North South East West Volume 1 226 227 0 22 20 42 0 208 200 408 3 336 121 457 0 567 3 8 0 0 %HV 0.0% 0.0% 1.4% 0.0% 0.5% PHF 0.25 0.69 0.76 0.76 0.78 B Northbound Southbound Eastbound Westbound By Driveway 1 120th PI SE SE 320th St SE 320th St Total Movement L T R Total L T 1 R Total L T R Total L T R Total Volume 0 0 1 1 1 10 0 12 22 11 110 87 208 139 188 9 336 567 PHF 0.00 0.00 0.25 0.25 0.83 0.00 0.60 0.69 0.55 0.92 0.57 0.76 0.47 0.84 0.56 0.76 0.78 Rolling Hour Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Drivewa 1 120th PI SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 4:00 PM 0 0 0 0 8 1 13 0 18 91 40 4 76 242 4 0 493 0 7 4 0 4:15 PM 0 0 1 0 10 1 13 0 17 98 43 4 66 240 6 0 495 1 7 4 0 430 PM 0 0 1 0 8 1 17 0 17 112 48 4 75 241 7 0 527 2 6 4 0 4:45 PM 0 0 1 0 9 1 16 0 15 117 60 5 91 224 6 0 540 2 9 3 0 5:00 PM 0 0 1 0 10 0 12 0 11 110 87 3 139 188 9 0 567 3 8 0 0 Peak Hour Summary y Mark Skaggs (206) 251-0300 - Driveway 2 & SE 320th St 4:00 PM to 5:00 PM Wednesday,. April 27, 2011 SE 320th St Peds 0 [317] f 221 221 IL o 0 W 5 o N N (D L s a~ a 101 101 + 253 0 V Peds 7 SE 320th St R 71 F96 152 248 N F -ol ro a3i O Approach PHF HV% Volume EB 0.74 4.0% 101 WB 0.76 0.0% 221 NB 0.87 0.0% 248 SB 0.00 0.0% 0 Intersection 0.91 0.7% 570 Count Period: 4:00 PM to 6:00 PM Total Vehicle Summary 00 I0 0 LL HV 0.0% LL PHF 0.76 0 _ 1 L Mark Skaggs Out 317 221 In (206)251-0300 101 ♦ o ty r o ♦ 221 In 101 253 Out O~ 0 S ~ 7 HV 4.0% Driveway 2 & SE 320th St PHF 0.74 ' f o 96 152 0 0 Wednesday, April 27, 2011 Out In 4:00 PM to 6:00 PM 0 248 Peak Hour Summary 4:00 PM to 5:00 PM 15-Minute Interval Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 2 Driveway 2 SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 4:00 PM 27 42 0 14 0 0 0 45 0 128 0 1 0 0 4:15 PM 22 40 0 23 0 2 0 48 0 133 0 0 0 0 4:30 PM 25 46 0 30 0 0 0 55 0 156 0 3 0 0 4:45 PM 22 24 0 34 0 2 0 73 0 153 0 3 0 0 5:00 PM 10 19 0 25 0 0 0 57 0 111 0 1 0 '0 5:15 PM 24 20 0 34 0 2 0 55 0 133 0 0 0 0 5:30 PM 13 27 0 34 0 1 0 63 0 137 0 3 0 0 5:45 PM 9 16 0 27 0 0 0 104 0 156 0 1 0 0 Total Survey 152 234 0 221 0 7 0 500 0 1,107 0 12 0 0 Peak Hour Summary 4:00 PM to 5:00 PM B Northbound Southbound Eastbound Westbound Pedestrians By Driveway 2 Driveway 2 SE 320th St SE 320th St Total Crosswalk Approach In Out Total =,v In Out Total In Out Total HV In Out Total HV North South East West Volume 248 0 248 0 0 0 0 Jill 101 317 418 4 221 253 474 0 570 0 7 0 0 %HV 0.0% 0.0% 4.0% 0.0% 0.7% PHF 0.87 0.00 0.74 0.76 0.91 B Northbound Southbound Eastbound Westbound By Movement Driveway 2 Driveway 2 SE 320th St SE 320th St Total L R Total Total T R Total L T Total Volume 96 152 248 0 101 0 101 0 221 221 570 PHF 0.89 0.83 0.87 0.00 0.74 0.00 0.74 0.00 0.76 0.76 0.91 Rolling Hour Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 2 Driveway 2 SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 4:00 PM 96 152 0 101 0 4 0 221 0 570 0 7 0 0 4:15 PM 79 129 0 112 0 4 0 233 0 553 0 7 0 0 4:30 PM 81 109 0 123 0 4 0 240 0 553 0 7 0 0 4:45 PM 69 90 0 127 0 5 0 248 0 534 0 7 0 0 5:00 PM 56 82 0 120 0 3 0 279 0 537 0 5 0 0 Peak Hour Summary r. Mark Skaggs (206) 251-0300 122nd Ave SE & SE 320th St 4:00 PM to 5:00 PM Wednesday, April 27, 2011 W a~ Q a N F I 24 F24 12 0 12 9 y V SE 320th St Peds 1 R 20 226 E 214 242 N IL 8 o - O w N N N 4 X a s a F251] 246 F258] 1 ~1 Peds 4 SE 320th St R T 71 0 0 0 W CO 79 F -ol Q G N N Approach PHF HV% Volume EB 0.91 1.6% 251 WB 0.88 0.4% 242 NB 0.00 0.0% 0 SB 0.50 0.0% 24 Intersection 0.91 1.0% 517 Count Period: 4:00 PM to 6:00 PM 1 In Out Total Vehicle Summary o ° 24 24 0 0 > LL 12 0 12 4 HV 0.4% a a PHF 0.88 4 N t. 20 Mark Skaggs Out 226 F o ♦ 242 In (206) 251-0300 246-+ o ~y c w 214 In 251 258 Out ,z s r6 HV 1.6% 4 122nd Ave SE & SE 320th St PHF 0.91 ♦ o °o 0 0 0 0 0 Wednesday, April 27, 2011 Out In 4:00 PM to 6:00 PM 9 0 Peak Hour Summary 4:00 PM to 5:00 PM 15-Minute Interval summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE SE 3201h St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 4:00 PM 0 0 0 0 3 0 4 0 1 54 0 0 4 52 3 0 121 0 3 6 0 4:15 PM 0 0 0 0 0 0 2 0 1 60 0 2 2 47 4 0 116 0 0 6 0 4:30 PM 0 0 0 0 7 0 5 0 1 68 0 0. 1 51 9 1 142 0 1 3 0 4:45 PM 0 0 0 0 2 0 1 0 1 64 1 2 1 64 4 0 138 1 0 5 0 5:00 PM 0 0 1 0 3 0 4 0 1 45 1 1 6 48 4 0 113 0 2 6 0 5:15 PM 0 0 0 0 3 0 2 0 0 48 1 1 1 51 4 0 110 1 1 1 0 5:30 PM 0 0 0 0 0 1 1 0 2 56 0 1 0 67 2 0 129 0 2 0 0 5:45 PM 0 0 0 0 4 0 0 0 0 41 1 0 1 101 4 0 152 0 0 3 0' Total Survey 0 0 1 0 22 1 19 0 7 436 4 7 16 481 34 1 1,021 2 9 30 0 Peak Hour Summary 4:00 PM to 5:00 PM 6 Northbound Southbound Eastbound Westbound Pedestrians By 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Total Crosswalk Approach In Out Total HV In Out Total HV In Out 1 Total HV In Out Total HV North South East West Volume 0 1 ~ 9 9 0 24 24 48 0 251 226 477 4 242 258 500 1 517 1 4 20 0 - %HV 0.0% 0.0% 1.6% 0.4% 1.0% PHF 0.00 0.50 0.91 0.88 0.91 B Northbound Southbound Eastbound Westbound By Movement 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Total L T R Total L T R Total L T R Total L T R Total Volume 0 0 0 0 12 0 12 24 4 246 1 251 8 214 20 242 517 PHF 0.00 0.00 0.00 0.00 1 0.00 0.60 0.50 1.00 0.90 0.25 0.91 0.50 0.84 0.56 0.88 0.91 Rolling Hour Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE SE 320th St SE 320th St Interval Crosswalk Time L T R HV L T R HV L T R HV L T R HV Total North South East West 4:00 PM 0 0 0 0 12 0 12 0 4 :225 6 1 4 8 214 20 1 517 1 4 20 0 4:15 PM 0 0 1 0 12 0 12 0 4 7 2 5 10 210 21 1 509 1 3 20 0 4:30 PM 0 0 1 0 15 0 12 0 3 3 4 9 214 1 503 2 4 15 0 4:45 PM 0 0 1 0 8 1 8 0 4 3 3 5 8 230 14 0 490 2 5 12 0 5:00 PM 0 1 0 10 1 7 0 3 0 3 3 8 267 14 0 504 1 5 10 0 1 l l 4 Peak Hour Summary Mark Skaggs (206) 251-0300 122nd Ave SE & Parking Lot 4:00 PM to 5:00 PM Wednesday, April 27, 2011 W CO N Q 72 F 1 N 0 1 y y Peds 0 R ❑2 F16] o w E v N N o a CL s a 11 Peds 0 Parking Lot T x 0 10 W F14 Fiol ; Q a c N N t► Approach PHF HV% Volume EB 0.00 0.0% 0 WB 0.50 0.0% 16 NB 0.83 0.0% 10 SIB 0.25 0.0% 1 Intersection 0.68 0.0% 27 Count Period: 4:00 PM to 6:00 PM o o , Out Total Vehicle Summary 0 1 *j t H V 0.0% PHF 0.50 0 _ 1 L2 Mark Skaggs Out 0 16 In (206)251 -0300 - 4- In 0 11 Out S 14 0 HV 0.0% 122nd Ave SE & Parking Lot PHF 0.00 t (r & o 0 10 Wednesday, April 27, 2011 out In = 4:00 PM to 6:00 PM 14 10 Peak Hour Summary 4:00 PM to 5:00 PM 15-Minute Interval Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Interval Crosswalk Time T R HV L T HV L R HV Total North South East West 4:00 PM 0 2 0 0 0 0 7 1 0 10 0 0 0 0 4:15 PM 0 2 0 0 0 0 1 0 0 3 0 0 3 0 4:30 PM 0 3 0 1 0 0 5 0 0 9 0 0 0 0 4:45 PM 0 3 0 0 0 0 1 1 0 5 0 0 1 0 5:00 PM 0 1 0 0 0 0 1 0 0 2 0 0 0 0 E5:155 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 14 0 1 0 0 15 2 0 32 0 0 5 0 Peak Hour Summary 4:00 PM to 5:00 PM 6 Northbound Southbound Eastbound Westbound Pedestrians By 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Total Crosswalk Approach In Out Total HV In Out Total HV In Out Total In Out Total HV North South East West Volume 10 14 24 0 1 2 3 0 0 0 0 16 11 27 0 27 0 0 4 0 %HV 0.0% 0.0% 0.0% 0.0% 0.0% PHF 0.83 0.25 0.00 0.50 0.68 l3 Northbound Southbound Eastbound Westbound By 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Total Movement T R Total L T Total Total L R Total Volume 0 10 10 1 0 1 0 14 2 16 27 PHF 0.00 0.83 0.83 0.25 0.00 0.25 0.00 0.50 0.50 0.50 0.68 Rolling Hour Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 122nd Ave SE 122nd Ave SE Parking Lot Parking Lot Interval Crosswalk Time T R HV L T HV L R HV Total North South East MO 4:00 PM 0 10 0 1 0 0 14 2 0 27 0 0 4 4.5PM 0 9 0 1 0 0 8 1 0 19 0 0 4 4:30 PM 0 7 0 1 0 0 7 1 0 16 0 0 1 4:45 PM 0 6 0 0 0 0 2 1 0 9 0 0 1 5:00 PM 0 4 0 0 0 0 1 0 0 5 0 0 1 j 1 Y K 14 .r _ Peak Hour Summary Mark Skaggs (206) 251-0300 Driveway 4 & SE 320th St 4:30 PM to 5:30 PM Wednesday, April 27, 2011 SE 320th St Peds o F261 F 256 257 1 o W E CD N N Z V i s aL 242 241 + 252 1 Peds 18 SE 320th St R 71 ❑ F1-1 72 F16 3 a~ Approach PHF HV% Volume EB 0.74 1.2% 242 WB 0.86 0.0% 257 NB 0.67 0.0% 16 SB 0.00 0.0% 0 Intersection 0.88 0.6% 515 Count Period: 4:00 PM to 6:00 PM r r ~ In Out „r to Total Vehicle Summary o 0 0 0 0 0 >LL = a 41 HV 0.0% PHF 0.86 0 y Mark Skaggs Out 261 257 In (206) 251-0300 241 ♦ o tY r o 4-256 In 242 252 Out z S r, 18 HV 1.2% Driveway 4 & SE 320th St PHF 0.74 T o 5 11 0 0 Wednesday, April 27, 2011 Out In 4:00 PM to 6:00 PM z , s Peak Hour Summary 4:30 PM to 5:30 PM 15-Minute Interval Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 4 Driveway 4 SE 3201h St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 4:00 PM 0 1 0 59 0 1 0 54 0 114 0 5 0 0 4:15 PM 2 1 0 58 0 1 0 51 0 112 0 8 0 0 4:30 PM 1 3 0 82 0 1 1 60 0 147 0 1 0 0 4:45 PM 1 1 0 61 0 1 0 75 0 138 0 10 0 0 5:00 PM 1 5 0 45 1 1 0 64 0 116 0 2 0 0 5:15 PM 2 2 0 53 0 0 0 57 0 114 0 5 0 0 5:30 PM 0 2 0 55 0 1 0 70 0 127 0 7 0 0 5:45 PM 0 1 0 50 0 1 0 100 0 151 0 1 0 0 Total Survey 7 16 0 463 1 7 1 531 0 1,019 0 39 0 0 Peak Hour Summary 4:30 PM to 5:30 PM B Northbound Southbound Eastbound Westbound Pedestrians By Driveway 4 Driveway 4 SE 320th St SE 320th St Total Crosswalk Approach In Out Total HV In Out Total In Out Total HV In Out Total HV North South East West Volume 16 2 18 0 0 0 0 242 261 503 3 257 252 509 0 515 0 18 0 0 %HV 0.0% 0.0% 1.2% 0.0% 0.6% PHF 0.67 0.00 0.74 0.86 0.88 B Northbound Southbound Eastbound Westbound By Driveway 4 Driveway 4 SE 320th St SE 320th St Total Movement L R Total Total T R Total L T Total Volume 5 11 16 0 241 1 242 1 256 257 515 PHF 0.63 0.55 0.67 0.00 0.73 0.25 10.74 0.25 0.85 0.86 0.88 Rolling Hour Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start Driveway 4 Driveway 4 SE 320th St SE 320th St Interval Crosswalk Time L R HV T R HV L T HV Total North South East West 4:00 PM 4 6 0 260 0 4 1 240 0 511 0 24 0 0 4:15 PM 5 10 0 246 1 4 1 250 0 513 0 21 0 0 4:30 PM 5 11 0 241 1 3 1 256 0 515 0 18 0 0 4:45 PM 4 10 0 214 1 3 0 266 0 495 0 24 0 0 5:00 PM 3 10 0 203 1 3 0 291 0 508 0 15 0 0 Peak Hour Summary NZ. Mark Skaggs (206) 251-0300 124th Ave SE & SE 320th St 5:00 PM to 6:00 PM Wednesday, April 27, 2011 ti Q w _ N F378] 328 e► F 35 F143 SE 320th St Peds 2 R 155 289 E 54 209 lv 0 0 r FY ~ n N N 173 a s as 223 50 193 Peds 0 SE 320th St Approach PHF HV% Volume EB 0.91 1.8% 223 WB 0.65 0.0% 209 NB 0.00 0.0% 0 SB 0.68 0.0% 378 Intersection 0.91 0.5% 810 Count Period: 4:00 PM to 6:00 PM ♦ a In Out Total Vehicle Summary o 1P 378 328 00 > LL 235 143 Ram a 41 It It PHHV 0.0% 1 F 0.65 2 • 173 J ~ L 155 Mark Skaggs Out 289 209 In (206) 251-0300 50 ♦ °"l~M ° 54 In 223 193 Out - S r HV 1.8% 0 124th Ave SE & SE 320th St PHF 0.91 '1 t f l o °o 00 Wednesday, April 27, 2011 out In 4:00 PM to 6:00 PM 0 0 Peak Hour Summary 5:00 PM to 6:00 PM 15-Minute Interval Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 124th Ave SE 124th Ave SE SE 320th St SE 320th St Interval Crosswalk Time L R HV L T HV T R HV Total North South East West 4:00 PM 24 42 0 50 9 1 7 36 0 168 1 0 13 0 4:15 PM 25 36 1 54 6 1 13 20 0 154 1 0 20 4 4:30 PM 18 52 0 77 13 1 9 33 1 202 0 0 22 4 4:45 PM 25 57 0 36 17 1 21 36 0 192 1 0 37 2 5:00 PM 33 40 0 50 11 1 22 58 0 214 0 0 21 2 5:15 PM 26 45 0 40 10 1 13 36 0 170 0 0 15 2 5:30 PM 42 53 0 48 13 1 13 34 0 203 2 0 14 6 5:45 PM t23 2 97 0 35 16 1 6 27 0 223 0 0 20 0 Total Survey 5 422 1 390 95 8 104 280 1 1,526 5 0 162 20 Peak Hour Summary 5:00 PM to 6:00 PM 6 Northbound Southbound Eastbound Westbound Pedestrians By 124th Ave SE 124th Ave SE SE 320th St SE 320th St Total Crosswalk Approach In Out Total In Out Total HV In Out Total HV In Out Total HV North South East West Volume 0 0 0 378 328 706 0 223 289 512 4 209 193 402 0 810 2 0 70 10 %HV 0.0% 0.0% 1.8% 0.0% 0.5% - PHF 0.00 0.68 0.91 0.65 0.91 B Northbound Southbound Eastbound Westbound By 124th Ave SE 124th Ave SE SE 320th St SE 320th St Total Movement Total L R Total L T Total T R Total volume 0 143 235 378 173 50 223 54 155 209 810 PHF 0.00 0.85 0.61 0.68 0.87 0.78 0.91 0.61 0.67 0.65 0.91 Rolling Hour Summary 4:00 PM to 6:00 PM Interval Northbound Southbound Eastbound Westbound Pedestrians Start 124th Ave SE 124th Ave SE SE 320th St SE 320th St Interval Crosswalk Time L R HV L T HV T R HV Total North South East West 4:00 PM 92 187 1 217 45 4 50 125 1 716 3 0 92 10 4:15 PM 101 185 1 217 47 4 65 147 1 762 2 0 100 12 4:30 PM 102 194 0 203 51 4 65 163 1 778 1 0 95 10 4:45 PM 126 195 0 174 51 4 69 164 0 779 3 0 87 12 5:00 PM 143 235 0 173 50 4 54 155 0 810 2 0 70 10 Green River Community College 2-3 Trades Building Project Neighborhood Meetings Summary Introduction Green River Community College (GRCC) held three neighborhood meetings in April 2010 to share information about its plans to construct a new Trades Building at the site of the existing Lea Hill Park, in Auburn, WA. The site is located at the intersection of SE 320th Street and 124th Ave SE, just north of the campus and across the street from the GRCC student housing complex. As part of a proposed land exchange with the City of Auburn, GRCC plans to construct the new Trades Building on the current Lea Hill Park site. The City will build a new city park on properties currently owned by the GRCC Foundation and Green River Community College, just north of the GRCC child care center on 124th Ave SE, a site currently known as the Martin property. The purpose of the meetings was to: • Share information about the Trades Building Project • Talk with residents about the project • Answer questions • Hear concerns early in the design process Meeting Dates & Locations The meetings were held in Auburn at the following dates and locations: • Monday, April 19, 2010, at Family of Grace Lutheran Church, 31317 124th Ave SE, 6-8 p.m. • Monday, April 26, 2010, at Family of Grace Lutheran Church, 31317 124th Ave SE, 6-8 p.m. • Wednesday, April 28, 2010, at Lea Hill Clubhouse, 12120 SE 319`" Place, 5-7 p.m. Neighborhood Outreach GRCC conducted the following outreach to inform and encourage neighborhood participation: • Over 1,300 postcards were mailed to residents between SE 320th Street and 312th Ave, from 116th to the west and SR 18 to the east. Postcards were delivered to property owners and renters • Information about the meetings was posted on the GRCC Web site • Word-of-mouth through direct contact with several neighbors and community members • Article in the Auburn Reporter In addition, a first-grade teacher at Arthur Jacobsen Elementary School sent information about the meetings home with her students because of the class's current activities in park planning. Meeting Format & Materials All meetings followed the same general format, including an open house with information stations, a presentation from the project team, and question/comment session with meeting participants. At the request of one Rainier Ridge resident, an invitation was made to surrounding neighborhoods to host a station representing neighbors/interests. One neighbor took advantage of the offer and represented some of the interests of Rainer Ridge neighbors. The stations included: Station 1: Welcome/Sign-in Station 2: Trades Building Design & 124th Ave SE street improvements Station 3: Campus Safety Station 4: Trades Programs Station 5: Rainier Ridge Homeowners Association A fact sheet and comment card were provided to attendees. Project Team Members The following project team members participated in at least one of the three meetings. The transportation engineer was not present at the first meeting and attended the second and third meetings. Green River Community College • Sam Ball, GRCC Dean of Capital Projects • John Ramsey, GRCC Public Information Officer • Mark Milbauer, Division Chair for Trades & Technology Programs, and Auto Body Instructor • George Frasier, GRCC Vice President of Development • Tom Weisweaver, GRCC Director of Facilities • Rebecca Rhodes, GRCC Dean of Trades & Technology • Fred Creek, Director of Campus Security Architecture & Design • Jerry Osborn, S.M. Stemper Architects, lead architect • Sara Wilder, S.M. Stemper Architects GRCC Trades Building Project Neighborhood Outreach Meetings Summary - May 2010 2 • Chuck Warsinske, landscape architect with Susan Black & Associates working on the Trades Building Project and new park project with the City of Auburn Transportation • Mike Read, Transportation Engineering NW, traffic engineer for the Trades Building Project and 124th Ave SE street improvements Other • Richard Weinman, land use consultant • Melinda Posner, facilitator Trades Presentation Facilitator Melinda Posner welcomed everyone to the meetings, introduced project team members, outlined the meeting format and shared ground rules for productive dialogue. She introduced Sam Ball, who shared the first of several key components about the project including: • Need and purpose of the project • Project schedule • Interest in communicating early with residents • Plans for conducting effective outreach Jerry Osborn from S.M. Stemper Architects talked about his firm's many years of experience with GRCC, the need and interest to design this building compatibly with the neighborhood, and underscored the significance of designing this building as the college's future "front door." He introduced Sara Wilder, key designer for the site layout. Sara talked about building orientation, screening, use of materials, and strategies to reduce negative impacts to neighbors from noise, views, and parking. Sara introduced Chuck Warsinske, who shared details about the landscaping plans, stormwater management and integration of the Trades Building with the new city park. Transportation engineer Mike Read discussed the 124th Ave SE improvements planned for this summer, how future circulation will be addressed in the future, and opportunities and constraints to improving the traffic situation currently faced by residents. Representatives from the Trades & Technology programs shared information about the five Trades programs (Welding, Auto Body, Automotive, Carpentry, and Manufacturing), noted the importance of training students for local jobs, Trades program services that meet community needs, and benefits of a new building with updated equipment and technology. Team members shared that a meeting summary would be developed and distributed to all attendees and made available on the GRCC Web site. GRCC representatives indicated that a future meeting will be held to show design progress and how the project team addressed concerns and issues of the neighbors. GRCC Trades Building Project Neighborhood Outreach Meetings Summary - May 2010 3 GRCC representatives indicated they will initiate quarterly meetings with neighbors to communicate more regularly, share updates about projects like Trades, and'other programs/projects that might impact residents in the area. Contact information collected at the Trades outreach meetings will be used to contact residents in advance of these meetings. The first meeting will likely be held this summer. Questions & Comments Questions and comments from all three meetings have been consolidated and organized by topic. Meeting participants were encouraged to share comments in the Q&A portion of the presentation, write comments on project comment cards, provide comments electronically through the GRCC Web site, and/or contact John Ramsey directly. Trades Building Design, Site Plan, Aesthetics & Landscaping ■ Is there a picture of what the building will look like when residents drive by? ■ One resident likes the idea of keeping the building surrounded by trees. A resident was glad to hear that sound will be tested. From where they live, they don't hear noise from the existing Trades building. ■ Current views of existing park and open space will be changed with new building. ■ How will the perspective of homeowners be considered? For example, how will the team determine what it looks like from homes that look in to the building? ■ Will the new Trades Building be fenced? ■ Will the site be open to the public 24 hours per day? ■ Will the new Trades Building be water and energy efficient? Will it take more or less power? ■ Will the new building use rain water, for uses beyond vegetation? ■ What about the use of gray water in the new building? ■ Plans to "daylight" existing natural waterways are a real plus for this project, especially when incorporated along the pathways. ■ What kind of trees will be planted? ■ What size of trees will be planted? ■ What will be planted along 124th Ave SE? ■ Will the project include cedars? ■ Is there a concern about planting very large trees and then going through a very wet rainy season? ■ Will the trees have foliage all the way to the ground or will residents see trunks primarily? ■ The plan sounds like it will look lush - that is a good thing. ■ How will the trees on the Trades site look at different seasons? Concerned that areas with deciduous trees (those that lose leaves in fall/winter) will not be very nice to look at. ■ Will the pathway be lighted at night? ■ The closest resident to the new Trades Building is concerned about property values. A building in place of a park doesn't seem to be an improvement. Program Operation, Noise GRCC Trades Building Project Neighborhood Outreach Meetings Summary - May 2010 4 ■ What is the schedule of classes at Trades? Will it create more impacts at the already impactful times? Or is it "off-track"? ■ Shop activities in the Trades Building are loud. There is skepticism that noise issues can be managed successfully. ■ There are concerns about noise from the Trades programs. Which programs are the noisiest? ■ Will Trades Program work areas be enclosed? ■ Will sound dampening material be used? ■ If, after construction, the new building creates significant negative impacts to neighbors, is there a way for these to be addressed in the future. Traffic, Access & Parking ■ Improvement plans for 124th Ave SE will not result in widening the road near the college. Won't that create even more of a bottleneck until the intersection at 124th Ave SE and SE 320th Street is improved? ■ Has the college considered a pedestrian overpass to move pedestrians between the new Trades site and the existing campus? ■ What about a pedestrian tunnel? ■ The flow of traffic is pretty bad at times - not always - especially when all schools in the area are getting out (elementary, middle school, high school). ■ Student parking in neighborhoods is also a concern. ■ Having the driveway into the new building right across from Rainer Ridge neighborhood is a concern. ■ It is very difficult to make a left on to 124th Ave SE. ■ What are the planned traffic improvements on 124th Ave SE? ■ It would be helpful to have the traffic engineer at the meetings to address traffic flow questions. ■ Will the City require curb, gutter, sidewalk, and stormwater improvements on east side? That is where it's really needed. ■ How will students circulate/flow between new Trades building and main campus? ■ Where will Trades students park? Will the Trades building parking lot be just for Trades students? How will you keep them from parking on street? ■ There is a concern about high speeds and safety. It's currently unsafe for cars and pedestrians on 124th Ave SE. ■ Bus service is inadequate. Consider alternative forms of transportation. ■ Put a 20-foot high, concrete sound barrier along the east side of 124th Ave SE. ■ Regarding parking on neighborhood streets, consider a permanently bolted sign at the front of the Rainier Ridge neighborhood. The existing one gets stolen and covered with graffiti. ■ There is a significant amount of foot traffic - lots of international students - along 124th Ave SE. ■ Street improvements should be carried through full length of 124th Ave SE, on both sides of the street. ■ Don't do a traffic study on 124th Ave SE at the wrong time (e.g. right after 124th Ave SE improvements have been done). ■ Don't put a traffic light at 318`h ■ There is a concern about GRCC students parking in the Rainier Ridge neighborhood. GRCC Trades Building Project Neighborhood Outreach Meetings Summary - May 2010 5 ■ There is a concern about parking for use of the park. Will this increase parking on the street? There is a lot of parking on 316"'. Will there be enough parking on site? ■ Is a parking garage really planned? ■ How will future GRCC student growth affect traffic? ■ Are there planned signal improvements at 318th? ■ Is there a plan to continue 124th Ave SE south, straight into the campus? ■ At peak traffic times, crossing 124th Ave SE to go to and from the park will be very unsafe. How will that be addressed? ■ Widening 124th Ave SE will increase traffic speeds and make it more unsafe for pedestrians. ■ How will residents on the east of 124th Ave SE get to the park safely? ■ When the City eventually completes traffic improvements on the west side of 124th Ave SE, will there be enough room for those improvements without taking portions of residents' backyards? ■ If the long-term plan is "straight in" to the college, how will that change traffic control at SE 320th Street? ■ To turn right on 318th (from Rainier Ridge) is only possible when the signal turns red at SE 320th Street. The left is almost impossible. ■ What are the plans for pedestrian access across SE 320th Street, near the Lea Hill neighborhood (west of the intersection of 124th Ave SE and SE 320th Street)? ■ What are final plans for the intersection at SE 320th Street and 124th Ave SE? ■ Rumors include a roundabout for that location. Stormwater, Wetlands ■ Are there stormwater improvements planned for 124th Ave SE? ■ There are concerns about stormwater, water, sewer and noise. Regarding stormwater, it runs directly into the Green River, there are no oil traps at the college, there is milfoil in ditches, and backed up water leads to flooding in heavy rains. ■ Will there be detention ponds? Construction Schedule & Timing ■ What is the current schedule for construction of the Trades Building and the other projects? ■ Could the land near the college entrance be considered for additional buildings? Public Safety ■ Public safety is a concern. ■ There is positive support for this project. The existing park has been a hangout for illegal activities and crime. Consider design solutions that do not invite crime or public safety issues. ■ Will GRCC provide security? ■ What about the path from the Trades Building into the park? Will that be closed off or otherwise "shut down" at dusk? ■ This is a good opportunity to bring the two sites together. There is the benefit of security for both sites. Vigilant neighbors can help with security a lot, by paying attention and making calls when they see suspicious activity. GRCC Trades Building Project Neighborhood Outreach Meetings Summary - May 2010 6 ■ The police may be neglecting security at the park right now because of the future plans. They show up when called but just chase folks away. ■ Will the site have lighting? ■ Will the site have surveillance cameras? ■ Will there be.lighting when school is not in session? Will GRCC patrol 24/7? Future Park ■ When will the new park be developed? ■ Will the park be co-owned by the City of Auburn and GRCC? ■ There is a concern that the park could be redeveloped into something else if the City decides it doesn't want the park anymore. Is.there.,a way to guarantee its permanence? ■ There is interest in reviewing the specific language of the covenant. It was noted that it is public information and questions about it'should.be directed to the City. ■ Some ideas for the future park include: 1) incorporate or commemorate the cows that have always been in the cow pasture there; 2) recognize the Martin family in the name of the park or with a plaque. ■ The park swap hasn't been finalized yet. Only a Memorandum of Understanding has been . completed between the City and GRCC. ■ Who owns the ball field now? ■ Is GRCC designing the park? ■ Neighbors want to discourage the park as a "hangout" for criminal activity. ■ Is there a plan to retain the present walkway from the park to the Lea Hill Clubhouse (is this right?) ■ Whowill maintain the..park? S ■ There is a legal-agreement w/ GRCC re: student housing - can there be same kind of agreement? ■ There is a concern that the land exchange isn't acre for acre. ■ A wetland is visible space - even if it's not usable. This helps makes up for loss of park acres in some minds. ■ Can the child care.center be relocated?. Don't want to lose park space. The community is losing two acres because the college is. paying for park. Don't want it to.continue to be "sold to the deepest pocket" ■ How does the Trades Building construction schedule affect the park construction? Comments Cards Received - April 19,201 0 Meeting Name Summary of Comments Concern about traffic at the entrance to Rainier Ridge and eventual entrance to the new Trades Building. It would be nice to have a,stoplight so that cars can flow more freely and pedestrians can be protected' Will there be a sidewalk on the east side of 124th Ave SE between GRCC and College Place? The college master planning documents on the Web site are outdated - need to have updated, accurate and timely information. GRCC Trades Building Project Neighborhood Outreach Meetings Summary - May 2010 7 Green River Community College Trades Building Project June 23, 2010 Neighborhood Meeting Summary Introduction Green River Community College (GRCC) held a follow-up meeting with neighbors to discuss the Trades Building Project on Wednesday, June 23, 2010. The purpose of the meeting was to share responses to questions and issues raised at three previous neighborhood meetings held in April, and to summarize the next steps in the process. The meeting was held from 6:00 to 8:00 p.m. at Family of Grace Lutheran Church, located at 31317 124th Ave SE. Background GRCC plans to construct a new Trades Building at the site of the existing Lea Hill Park, in Auburn, WA. The site is located at the intersection of SE 320th Street and 124th Ave SE, just north of the campus and across the street from the GRCC student housing complex. As part of a proposed land exchange with the city of Auburn, GRCC plans to construct the new Trades Building on the current Lea Hill Park site. The city will build a new park on properties currently owned by the GRCC Foundation and Green River Community College, just north of the GRCC child care center on 124th Ave SE, a site currently known as the Martin property. Outreach GR.CC conducted the following outreach to inform and encourage neighborhood participation including: • Distribution of April meeting summary with a notice about the June 23 meeting to all past meeting participants; • Posting of April meeting summary on GRCC Web site; • Distribution of email reminders to past meeting attendees and stakeholder contacts; • Reminder phone calls to past meeting attendees and stakeholder contacts; • Announcement of the upcoming meeting at two city parks planning meetings held at the end of May and mid June; and • Distribution of a news release to the Auburn Reporter. Meeting Format a The meeting included introductory comments by meeting facilitator, Melinda Posner; a brief summary of the Trades project by Sam Ball, GRCC Dean of Capital Projects; and presentations by members of the design team, who shared information about design, landscaping, circulation and other site planning issues. Project Team Members The following project team members were present: Green River Community College • Sam Ball, GRCC Dean of Capital Projects • Mark Milbauer, Division Chair for Trades & Technology Programs, and Auto Body Instructor • Tom Weisweaver, GRCC Director of Facilities • Rebecca Rhodes, GRCC Dean of Trades & Technology • Fred Creek, Director of Campus Security Architecture & Design • Jerry Osborn, S.M. Stemper Architects, lead architect • Sara Wilder, S.M. Stemper Architects • Chuck Warsinske, landscape architect with Susan Black & Associates working on the Trades Building Project and new park project with the City of Auburn Noise • Adam Jenkins Transportation • Mike Read, Transportation Engineering NW, traffic engineer for the Trades Building Project and 124th Ave SE street improvements Other • Richard Weinman, land use consultant • Melinda Posner, facilitator 2 GRCC Trades Building Project Follow-Up Outreach Meeting-June 23, 2010 Summary Design Presentation The design presentation summarized the key issues that have been resolved since the first meetings. Jerry Osborn noted that design solutions continue to evolve based on continuing study, design refinements, and coordination with the city park planning efforts. It was noted that the current Trades Building Project plans are not final. Several design revisions were highlighted: • Graphic renderings of views were presented, illustrating existing and planned vegetative screening, pedestrian pathway, building entry, and views from impacted neighbors • Pedestrian circulation includes a complete pedestrian pathway around the perimeter of the project site with connections to the GRCC campus and planned city park • Pedestrian crossings will channel pedestrians at key points to reduce auto/pedestrian conflicts • Noise testing identified ambient noise levels. The new building will increase noise to some level that will be heard by some residents. Design strategies to mitigate noise impacts include acoustical building materials, building orientation, vegetative screening and berming. The team concluded the presentation with information about the next steps in the process. This includes submittal of a land use application to the city of Auburn in late June for a rezone to "institutional use," the same zone that applies to the main GRCC campus. An administrative use permit is also required. These land use requests will be made through the city's permit processing requirements, which include review and consideration by the Auburn City County (rezone) and hearing examiner (administrative use permit). Property owners will be noticed about these land use actions and will have additional opportunities to review information and provide comments. In addition, GRCC expects to initiate quarterly meetings with interested parties to discuss this and other issues that are of interest and concern between the neighborhood and college activities. Sam Ball asked interested residents to sign up to receive notice of these meetings. The first will likely take place in the fall. The following questions and comments were made at the meeting. Trades Program, Building Design, Aesthetics & Landscaping ■ Are the Trades programs certified by major employers or private companies? ■ Will new Trades programs be offered in the new building? ■ Which Trades programs will be enclosed in the new building? ■ What is the planned height of the new building? ■ Where will scrap metal and other refuse storage currently seen at the existing Trades building be located? ■ What will be visible from the Lea Hill Homes neighborhood? _ 3 GRCC Trades Building Project Follow-Up Outreach Meeting-June 23, 2010 Summary ■ Will there be fencing along the west side of the property? ■ Lea Hill Homes neighbors are concerned about the shortcut students might take on the west side and would support a fence to redirect pedestrian traffic. The street is not well lit. Property owners are interested in channeling pedestrian access farther away from the residences. ■ Will there be room to add landscaping near the fencing? ■ What kind of fence material will be used? ■ How high will the fence be? ■ When automobiles are being worked on in the automotive and auto body programs, will they be seen by neighbors? ■ Are there plans for landscaping on the college side of the fence? ■ For the new park, are you planning to add new trees and replace the existing poplars? ■ Would you consider removing the poplars and planting something else instead? ■ Is maximizing open space not as high of a priority at the park? ■ What is the cost of the total project? ■ There is concern about the current park standing open in disrepair after the new park is built and before the Trades building is built. It looks bad, is dangerous (especially the dugouts), and structures are failing apart. Noise ■ What is the difference between existing noise levels in the neighborhood and noise levels expected from the new building? ■ Do night classes include some of the banging and grinding activities that are characteristic of Trades programs? ■ Does framing take place in the carpentry classes? ■ Currently, residents hear very little noise. This will be a change. Neighbors will definitely hear it. ■ Is there any provision for addressing noise issues after the building is built? ■ Will a complaint process go through the city of Auburn? _.....4_. _ _ , GRCC Trades Building Project Follow-Up Outreach Meeting-June 23, 2010 Summary ■ Shop noise is loud. It is not-reasonable to think.that it can be entirely contained and not heard by neighbors. ■ Are you going to insulate residents'. houses? ■ It might be a good idea to have post-construction meetings with neighbors to hear and address concerns like this. Traffic & Circulation ■ Will there be a marked crosswalk at 124th Ave SE and SE 316th Street to provide safe access to and from the new park? ■ What will be the posted traffic speeds on 124th Ave SE and SE 320th Street? ■ How much parking will there be at, the Trades Building in relation to how many students are typically enrolled in the Trades programs? ■ Getting out on to SE 320th Street is very difficult. If there is a pedestrian crossing notification system that stops traffic and allows pedestrians to cross at any time, it will make this even more difficult. ■ Will there be off-street parking at the new park? ■ Has the college talked with the city about providing sidewalk improvements on the east side of 124th Ave SE? ■ Has the city hosted a community meeting about overall transportation- plans with this group? ■ There is a safety concern of students walking on the east side. It is about 20 students to 1, when compared to the west side. ■ There is a roundabout on the circulation plans. Is this a final plan? ■ Where is the planned pedestrian bridge? " City Council Member Virginia Haugen reminded meeting participants that the council welcomes participation at their council meetings. . 5 GRCC Trades Building Project. Follow-Up Outreach Meeting-June 23, 2010 Summary Appendix A e Neighborhood Meetings Notification Postcard e Trades Building Project Fact Sheet • Trades Building Project Comment Card • Trades Building Project Web Site Text • Auburn Reporter Article Apri 1,8, 2010 e Auburn Reporter Article April 22, 2010 e Neighborhood Meeting. Sign-in Sheet April 19, 2010 ® Neighborhood Meeting Sign-in Sheet April: 26, 2010 e Neighborhood Meeting Sign-in Sheet April 28, 2010 Nonprofit Org. U.S. Postage . PAID Auburn, WA Riv Permit No. 184 1 1 Projects Capital or Current Resident 12401 320th St. Auburn, 98092-3622 SAVE THE DATE! Upcoming meetings to discuss Green River • • New 1 Meeting 1 Monday, April ' • : 1 Meeting 2 Monday, April • • : 1 Meeting 3 Wednesday, April 28 5-7 1 Green 'River-Community.College: is hosting three ,hood 'ineetings,~to. talk :with- residents`,. - about re lacin theexistln 40 ear-old Trades, bulldin g at a'new, site onSE320th Street. p g g Y g ' a F _k y F • • • • ill • • 11 d_; tt To learn more about the Trades Building Project, please visit L' AAo River COMMUNITY COLLEGE Green River Community College is embarking on an exciting new project to upgrade its Trades Building. The new facility, which has been funded by the State of Washington, will include updated equipment and new plumbing, electrical, and HVAC systems, which are now poorly functioning. Currently, the College's Trades programs are housed in five aging buildings, many of which were built more than 40 years ago (1966). They have exceeded their life cycles, are unable to meet current safety requirements, and are no longer adequate to support the instructional programs. or More Information The new Trades Building will facilitate enhanced student Please call John Ramsey at (253) 288-3360 or visit learning in a modern instructional environment and help www.greenriver.edu/trades-building meet local employers' demands for qualified graduates. Green River Community College is committed to a new building design that is sensitive to the surrounding com- munity and minimizes impacts to neighbors. ► sWa f I x , { i THE TRADES BUILDINGPROJ~ECT°{' 1r `r lP , - E .,,1 i v ~ ~ s . 1 tr ■ • - Trades Program Fast Facts . . - ■ Serves 430 students per year • - • - • - ■ About 20% of Trades students are under age 20 and 25% are over age 40 • • - • - - • • - ' • • ■ Trains and places students quickly - over 1,000 certificates awarded in last 5 years Trades Building Fast Facts - • Building Size: One-story, 65,000 sq. feet Cost: $20 million Features: ■ Preservation of wetlands _ ■ Dense, mature landscaping _ • • _ • • • • with walking paths ■ Construction techniques to reduce noise impacts ■ Modular construction to reduce , • building "mass" . ■ Enhanced streetscape " ' • • " • ■ Natural lighting ■ Green roofs _ • 'h C.w • ' y r AF Project Schedule Aril 2010 Neighborhood Outreach s' Meetings Summer 2010 Trades Rezone Application Submittal " Fall 2010 Auburn City Council Action on Rezone Application f 2013 Anticipate Construction to Begin 2015 Trades Construction Complete ,rte. . - - - 4 place first class.., stamp rn,,+;"-,iNrr here Explore Your Possibilities Green River, Community College Capital Projects 12401 SE 320th St. Auburn VA 98092=3622 a Ri+e COMMENT CARD: The Trades Building Project c~s~~ug,€r ~,oaieae NAME: AFFILIATION: (e.g. neighborhood group, organization, etc.) ADDRESS: CITY/STATE/ZIP: EMAIL: PHONE: Please share your comments about the Trades Building Project. Thank you. Your time and participation are appreciated. To learn more about the Trades Building Project, please visit www.greenriver.edu/trades-building Trades Building Project Project Description 3/22/2010 Project Description Green River Community College is embarking on an exciting new project to upgrade its Trades Building. The new facility, which has been funded by the State of Washington, will include updated equipment and new plumbing, electrical, and HVAC systems, which are now poorly functioning. Combining state-of-the-art facilities with mature landscaping, "green" materials and sensitive site design, the new Trades Building will facilitate enhanced student learning in a modern instructional environment and help meet local employers' demands for qualified graduates. Currently, the College's Trades programs are housed in five aging buildings. Many of the structures were built more than 40 years ago (1966); they have exceeded their life cycles, are unable to meet current safety requirements, and are no longer adequate to support the Trades instructional programs. The combined structures have interrelated systems problems including: • Old and worn building structure, roofs, exteriors and interiors • Deficient HVAC and plumbing systems • Failing single-paned windows • Leaking, corrosion and blockages in water piping system • Lack of fire sprinklers and alarm system • Aged electrical service • Presence of hazardous materials (asbestos) • Inadequate facilities for male and female students The new Trades Building will be designed and constructed to meet campus standards, a minimum 50-year life expectancy, and achieve a LEED (Leadership in Energy and Environmental Design) Silver Certification Level. Upcoming Neighborhood Meetings Green River Community College will host three neighborhood meetings to talk with residents about the Trades Building Project. Future meetings with the College community and broader Auburn community are also being planned. (link to postcard with meeting dates/locations) City of Auburn Park Plans The college and the City of Auburn signed a Memorandum of Understanding to support a property exchange between the city-owned Lea Hill Park and the GRCC/Green River Community College Foundation-owned Martin property, located a few blocks north of 320'h Street. The new Trades Building will be constructed on the existing Lea Hill park site and a new park will be constructed on the Martin property. 124th Street Improvements Street improvements planned for construction this summer will reduce traffic backups during rush hour, enhance pedestrian safety, and improve the visual experience along the roadway. Construction will include installation of pedestrian-friendly sidewalks with mature landscaping, removal of overhead power lines, and improved street lighting, as well as roadway modifications , to improve traffic flow that includes a new center left turn lane. (link to street improvement map) Trades Program Auto Body, Automotive, Carpentry, Manufacturing, and Welding comprise theCollege's- instructional programs in the trades. Each of these-programs is designed to prepare students for immediate employment. (link to each Trades program) For More Information Contact John Ramsey at (253) 288-3360 or click here to~ send us our comments tradesbuil di:ngL?,ercenriver. edu Project Images (to come) Progress 'Reports (to come) Auburn Reporter Article Officials set talks over GRCC, City of Auburn land swap By ROBERT WHALE Auburn Reporter News reporter Apr 08 201.0 Green River Community College uses the 8.97-acre Lea Hill Park to the north more than the residents of Lea Hill do, primarily as a practice field for intercollegiate sports. But the tennis court is wretched and the baseball diamond is so unfit for college ball that the Gators play their games at nearby Auburn Mountainview High School. The upshot is that the park at South 320th Street and 124th Avenue no longer answers the needs of a growing Lea Hill, which includes kids, college students and seniors Coincidentally, GRCC needs land for the replacement of the 45-year-old Trades and Industry building, part of the college's master plan for the long-term growth and capital needs of the campus. Now the City and GRCC have a solution to both problems - a land swap. Per agreement, the City will give the college Lea Hill Park, and the school will build the new Trades Building there. In exchange, the City will get a 7.15-acre site comprised of three parcels known collectively as the Martin property on 124th Avenue between Lea Hill Park and 316th Street, just north of the current park. On this site, GRCC will build a new community park. Before any plans are finalized, however, GRCC and the City of Auburn need to hear from people who live in the area. GRCC will host these neighborhood meetings to discuss plans for the new Trades Building: • 6-8 p.m., Monday, April 19, Family of Grace Lutheran Church, 31317 124th Ave. S.E. • 6-8 p.m., Monday, April 26, Family of Grace Lutheran Church, 31317 124th Ave. S.E. • 5-7 p.m., Wednesday, April 28, Lea Hill Clubhouse, 12120 S.E. 319th Place. Locals are invited to attend and talk with staff about site design, landscaping, and construction plans for the Trades Building, which will be designed as a LEED (Leadership in Energy and Environmental Design) Silver certified building. When completed in 2013, the building will f provide a modern instructional environment and help meet local employers' demands for qualified graduates. "We are excited about improving the instructional capabilities of our Trades programs," said Sam Ball, dean for capital projects. "We are committed to integrating this building in the same custom as other campus buildings, with mature forests and greenery that is in keeping with our area's native vegetation." The City of Auburn will host meetings later this spring to discuss future plans for the new park, which will be under joint GRCC and Auburn ownership. The City of Auburn acquired Lea Hill Park from King County in 2002 when the county was divesting itself of parkland. The deed directs that the park property be used for park and recreation purposes forever, unless the City gets equal lands or facilities in exchange. The replacement lands or facilities must also be used for park or recreation purposes. According to a memorandum of understanding between the City and GRCC, the City will transfer ownership of the park to the college in exchange for both the Martin property and other improvements. Green River's Trades programs are now housed in aging buildings at the east entrance to campus. Many of the structures date to the college's beginning in 1965. They have exceeded their life cycles, can't meet current safety requirements, and no longer are adequate to support the instructional programs, according to Ball. The new building will combine state-of-the-art equipment and facilities with mature landscaping, green building materials, and sensitive site design. The instructional programs in the Trades Division include Auto Body, Automotive, Carpentry, Manufacturing, and Welding. Each of these programs is designed to prepare students - many who are laid-off workers seeking retraining - for immediate employment. There's not enough space at the current site to meet future facility needs, and with the space freed up, the college can reconfigure the east entrance to the campus. Also, with the building removed, the college will have the room to relocate the Lindbloom Center to 320th. The GRCC Foundation owns the three parcels of land. A home childcare facility and a house now occupy part of the site. The Foundation, which acquired the land more than a year ago, is in the process of donating its interest to GRCC. The college will retain about 1.77 acres of the Martin property, site of a daycare facility, which it will keep. An independent appraisal will determine the respective values of the parcels. Whatever improvements GRCC makes will be consistent with the city-developed-and approved Lea Hill Park Master Plan and cannot exceed $1.5 million. The City will serve as the lead for the Lea Hill Park master plan and work with GRCC and the surrounding community on a conceptual park design. For more information on the project or neighborhood meetings, visit the College's web site at www.greenriver.edu or call John Ramsey, in the Public Information Office, at 253-288-3360. 3 i i ' i I Auburn Reporter Article a i _ Open houses set for Lea Hill Park planning effort Apr 22 201.0,10:07 AM The public is invited to attend an open house to discuss the upcoming planning efforts for Lea Hill Park. Two open houses will be held - May 18 and June 15, both at 6:30 p.m., at the Lea Hill Community Clubhouse, 12120 SE 319th Place, Auburn. . Lea Hill park property is being proposed to be used by Green River Community College for their Trades Building. The community has the opportunity to provide input into design elements for a new community park for the neighborhood. The seven-acre site is located adjacent to the north side of the current park. The purpose of the open house will be to begin a discussion for the park design; present several ? site planning concepts to interested individuals; solicit input from the Lea Hill Community and other park users as to the vision of how the site can be used; and answer general questions about the project. For more information about the Lea Hill Park planning efforts, please call 253-931-3043 or visit www.auburnwa.gov. Green River Community College Trades Building Neighborhood Meetings Monday, April 19, 2010 @ Family of Grace Lutheran Church SIGN-IN SHEET Please write legibly. Thank you. Name Address Address Phone Email How did you hear about the (If you prefer to receive information via meeting? email) Postcard, newspaper, word-of- mouth, other _ John Adams 3499132 Street Auburn, l'UA 9888 1253j 999°9499 jldams@comcast.net _ Newspaper, pcrstrar .r f ~p^ . -7 T - TT-3 ' .,....._.._..w........._.... _ ' Green River Community College Trades Building Neighborhood Meetings Monday, April 19, 2010 @ Family of Grace Lutheran Church: SIGN-IN SHEET Please write legibly. rhank yau. _ mAddress Address Phone Email How did you hear about the F- -Na" (if you prefer to receive information via meeting? ! email) Postcard, newspaper, word-of- mouth, other John Adams 1499132'"" Street Auburn, WA 988iS ~ (253 999 9949 ladamsC~fiomcaxt,net Newspaper, postcard Y?.,........~`'.T b ,i_~i,....,_..,_,--.L~" ..{"'t:•f,,t~_.,.L.,"~-`._i"'ai+4:'j~LS, "j'i.__.,. .•~.,'.R?....~.~ -71 14- '~~`'t 4 ' C T'~i ! •.,L 3` .i + .•f~i ,'t ~`t ..,.--1.L+.._.s- w..ltt . i ,;s' ' 1• O Li.t.,~CF i,1 pAa 3rrPCS- _ m za_..... _ _ a f~ ! ~"t., i ~ v r~"'~ i ~ ( ~ { b ~6~ ftr €~^t 'j f`" r'~',h}'8 ~ E~ .,rai ~ j - '4 1. ~ I t i IMI -35 1, t, 610 + 33 ,r 1 t 1 _ , . i _ ..._...,_...,.~,.~_....m._„m,..,..,~,.,.,.~ a ,1......u_____......»,..~__..w..,,~..o.~._._a_..~.,,.~..____~....»..,..... w~ Green River Community College Trades Rullding Neig#hlaorhood Meetings Monday, April 28, 2010 @ Lea Hill Clubhouse SIGN-IN SWEET Please write legfbly. Thank yau~ ...............v. ._.......,....u.... ...,.,.w....... 3 ....Y...... . Name Address Address ~ PhonjL- Email Hnve did you hear about the._._. _ If,Vau prpfer to re t:elve information uia ~ ttteeling? estt,sil Postcard, o vyspat7er t^rorrl ` rhouth, oltwor john Adams -199 10 ` street auburn, WA 98888 i (2,5,3; 999-99D ~ ~~rt ~ia~~sz~~vnacast.net N~WO5P;al e> , POstcaid,E ' - r ,y. 3 F t 3 i i i i I Green River Community College Trades Building Neighborhood Meetiogs Mondav, April 28, 2010 @ Iea Hill ClUbhause SIGNAN SHEET Please write legibly, Thank you. _.m _ Email How diet yov hear about the ~ . Name Address Address Phone far to receive ia7fcJrrs~tt~r; Of you lire via rtidetitt _ email) 1~~~~SXa ar>#, rt~.v3h~pet'> word-of,. w4autH` other I~irl rtt1S~~C'S7r2at.~st.ra€aL ri~wSts~l~~r, i~~~tr~r6~ Johtr Arlo+rf 14991 32 Street wlaa m, VVA r38k3f?3 (253) 999-9999 . S ' J f _ _ . s . ' t i , t i