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HomeMy WebLinkAboutSHL10-0003 HEARING EXAMINER * ~HI~"I JUNE 29, 2010 5:30 pm City Council Chambers 25 West Main Street Case No: SHL10-0003, Shoreline Permit Applicant: City of Auburn, Planning & Development Department Kim Truong Request: The proposed action is a shoreline permit forthe site preparation and development of remote, approximately 32-stall parking lot. The parking lot and connecting trail are proposed for the east side of Green River Road SE and separated from the Farmstead by an intervening hillside. Location: The site is composed of four parcels: 0521059006, 3222059113, 3222059031 and 3222059032. The construction is proposed north of the Farmstead at 28728 Green River Road, Parcel 3222059032,. The site is within the Section 32-22-05 East, W. M . Page 1 Exhibit 1 Staff Report AGENDA BILL APPROVAL FORM * SASH IIG'TQi Agenda Subject Public Hearing Application No. SHL10-0003 Shoreline Date: 6/24/2010 Substantial Development Permit Department: Planning & Attachments: Please refer to Exhibit Budget Impact: NA Development List below Administrative Recommendation: Hearing Examiner to approve the Shoreline Substantial Development Permit based upon the Findings of Fact, Conclusions and Condition as outlined. Background Summary: OWNER/APPLICANT: Kim Truong, Project Manager, Planning and Development Department, City of Auburn REQUEST: A Shoreline Substantial Development Permit for the site preparation and development of a remote, approximately 32-stall parking lot to serve the recreational Olson Farm historic site. The parking lot and enhancement of the existing connecting trail are proposed for the east side of Green River Road SE and separated from the Farmstead by an intervening hillside. The project includes associated stormwater management facilities, river buffer enhancement and site landscaping. LOCATION: The entirety of the Farmstead is composed of four parcels; the majority of the current proposed construction will occur on parcel 3222059113 and north of 28728 Green River Road SE. The project site is within Sections 32-22-05 East, and 5-21-05 East, W.M. EXISTING ZONING: 3222059031, 3222059032 & 0521059006 are zoned P-1, Public Use. Parcel 3222059113 is zoned UNCL, Unclassified. EXISTING LAND USE: Undeveloped (project area) the balance contains a historic farmstead. COMPREHENSIVE PLAN 3222059031, 3222059032 and 052105906 are designated Public/Quasi- Public Public/Quasi-Public. Parcel 3222059113 is designated Open Space. SHORELINE ENVIRONMENT DESIGNATION: Urban Conservancy SEPA STATUS: A Final Determination of Non-Significance was issued on 6-16-10. Reviewed by Council & Committees: Reviewed by Departments & Divisions: Arts Commission COUNCIL COMMITTE S: Building M&0 Airport Finance Cemetery Mayor Hearing Examiner Municipal Serv. Finance Parks Human Services Planning & CD Fire Planning Park Board Public Works Legal Police Planning Comm. Other Public Works Human Resources Action: Committee Approval: Yes No Council Approval: Yes No Call for Public Hearing l l Referred to Until l I Tabled Until I l Councilmember: Staff: Dixon Meeting Date: June 29, 2010 Item Number: rr~Y t 4 ~ i ri' rr ~ :'r }1 •~K SAY J l ~ ~ I i y a fir' ti i f.. ~ ~ .i f ~ Sr 'r9 .AS ~1 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 The Comprehensive Plan designation, zoning designation and land uses of the site and surrounding properties are: Location Comprehensive Plan Zoning Land Use Site 3222059031, PubliclQuasi-Public P-1, Public Use Historic Farmstead 3222059032, & 0521059006 3222059113 Open Space UNC, Unclassified Vacant North Within City of Kent; Low Within City of Kent: Undeveloped and Density Residential SF1 single family residential South PubliclQuasi-Public P-1, Public Use Auburn Municipal Golf Course East Within City of Kent: Low Within City of Kent: Undeveloped and Density Residential & SF1 & within City of single family Within City of Auburn: Auburn: R1, Single residential Single Family Family Residential Residential West Within King Co.: Green Within King Co.: R1, Public ROW of Belt Separator & Within SF residential & Green River Road Auburn: Open Space Within Auburn: P-1 SE, North Green Public Use River Park & the Green River EXHIBIT LIST Exhibit 1 Staff Report Exhibit 2 Master Land Use Application, Received March 12, 2010 Exhibit 3 Vicinity Map Exhibit 4 Mary Olson Farm Parking Improvements (95% construction plans), Sheets 1 through 12, City of Auburn Public Works Department, dated February 9, 2010, Received March 12, 2010 Exhibit 5 Notice of Application Exhibit 6 Affidavit of Posting Exhibit 7 Affidavit of Mailing Exhibit 8 Confirmation of Publication of Legal Notice - 30 days and Public Hearing Notice Exhibit 9 SEPA Final Determination of Non-Significance (SEP10-0008) Exhibit 10 JARPA Application filed with the Department of Ecology (submitted on 3/18/2009) Exhibit 11 Mary Olson Farm Wetland Investigation and Site Review, ESA Adolfson, July 16, 2008 Exhibit 12 Geotechnical Engineering Study for the Proposed Olson Farm Parking Lot and Bioretention Pond July 16, 2009, Geotech Consultants Exhibit 13 Ordinary High Water Mark Study, September 15, 2009, Watershed Company Exhibit 14 Surface Water Technical Information Report, June 17, 2009, WR Consulting Exhibit 15 Archaeological Testing Permit for the Mary Olson Farm, Auburn Washington, Entrix, Inc., June 12, 2009 Exhibit 16 Mary Olson Farm Buffer Mitigation, Monitoring Maintenance and Contingency Plan, ESA Adolfson, March 2010 Exhibit 17 Written Comments on the Project from Karen Walters, Watershed and Land Use Team Leader (Sent by E-mail), Muckleshoot Indian Tribe, dated 6-18-10 Page 2 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 FINDINGS OF FACT 1. Kim Truong, Project Manager, City of Auburn Planning and Development Department on behalf of the City of Auburn Parks, Arts, and Recreational Department has applied for a Shoreline Substantial Development Permit for the site preparation and development of a remote, approximately 32-stall parking lotto serve the recreational Olson Farm historic site. The parking lot and enhancement of the existing connecting trail are proposed for the east side of Green River Road SE and separated from the central farmstead by an intervening hillside. The project includes associated stormwater management facilities, river buffer enhancement and site landscaping. 2. The City of Auburn acquired the approximately 60-acre Olson Farm property in 1994 through King County Conservation Futures, a fund dedicated to preserving open space. The City then leased Mary Olson Farm to the White River Valley Museum for restoration and operation. In 2009 an additional 6.13 acre parcel was acquired as part of the farm site and annexed to the City of Auburn for municipal purposes (Ordinance No. 6261). The White River Valley Museum is working with the City of Auburn to restore Mary Olson Farm and open it to the public in as a living history and environmental education site. The farm is designated a King County Landmark and listed on the National Register of Historic Places. It is purported to be the most intact 1880s family farm in King County. Situated in the secluded canyon at the farm's center is a large barn built in 1897 and a farmhouse built in 1902. Forested hills and two meadows surround the farm's remaining buildings that were constructed in the 1920s: a smokehouse, garage, weaving shed, ice house and an outhouse. Other significant natural and historic features include acentury-old orchard, two salmon runs in Olson Creek and a wagon road. The restoration effort seeks to balance preservation of the farmstead's historic features with safety requirements and standards for public facilities related to access and environmental quality. The purpose of the preservation of the Mary Olson Farm is to foster understanding of its specific heritage, distinct environment and the economic reality of a family farm. 3. The entirety of the Olson Farm property consists of four parcels identified as parcel No. 0521059006, 3222059113, 3222059031 and 3222059032 forming an irregular north-south band following the bends along the east side of the Green River. The four parcels are located in the SW %4 of Section 32, T22N., R 05E, W.M and in the NW quarter of Section 5, T21 N, R5E, W.M. The western boundary of the site is King County's Green River Road SE. The River is located west of Green River Road SE except near the north end where a parcel owned by King County intervenes between the Road and River. The river corridor as well as the area to the west is located in unincorporated King County. The property to the north as well as the approximately northern half of the east property line is bordered by residential areas lying within the City of Kent. The adjacent areas in the city of Kent are zoned SR-1, allowing low density single family residential. The southern half of the east property line is bordered by single family residential parcels within the City of Auburn separated by steeply sloping hillside. To the south is the City of Auburn's municipal golf course. 4. The property is mostly forested hillside containing mixed deciduous and evergreen forest, and contains pastures with scattered shrubs in some of the flatter areas closer to the road. The most developed portion of the site is the farmstead within a southwestern facing canyon in the central portion of the property. The central portion of the site currently contains several structures used for educational purposes. It also includes a caretaker's trailer. The farmstead consists of maintained grass areas surrounding the buildings, an orchard and a gravel driveway. Olson Creek and its associated riparian corridor also cross westerly through the farmstead eventually Page 3 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 passing under Green River Road SE through a culvert and entering the Green River. The remaining parcels of the property are vacant. 5. The proposed construction would mostly occur within the relatively flat pasture on Parcel No. 3222059113. According to the Mary Olson Farm Buffer Mitigation, Monitoring Maintenance and Contingences ESA Adolfson, March 2010, the project area is relatively flat and vegetated with Himalayan blackberry and reed canary grass with some bracken fern. Dominant species include orchard grass, sweet vernal grass and tall fescue. 6. The City of Auburn seeks to develop a small parking lot and provide for up to 30 cars and 2 buses in support of the historic farm site. A remote site is proposed in order to provide suitable parking that does not consume area within the central farm and interfere with and potentially detracts from the historic site rehabilitation but is accessible as possible to the farm. The purpose is to provide off-street parking for visitors arriving in passenger vehicles as well as bus parking to accommodate school buses bringing students to the farm. The use by school buses will allow for instructional visits by students to promote the use of the park as an interpretive and educational facility. The project will be connected to the central farm site by an improved pedestrian-only trail (approximately 600 feet) following the route of the original wagon road serving the site. The project will include the construction of a pad for a future vault toilet (2-person capacity) for use by the visitors. The installation of parking lot lighting and the vault toilet is planned as a subsequent phase in approximately 2012 and the toilet installation is dependent upon securing King County Health Department approvals. 8. The project will include the construction of pervious pavement with a grasscrete type product (modular grid pavement) within the parking stalls, with the exception of accessible parking spaces, the main drive aisle and where needed to provide a pedestrian accessible route of travel between accessible parking spaces and the future toilet to meet accessibility code requirements. The project will clear less than 1 acre of land for construction of the parking and associated restroom facility and storm drainage facility. All construction work will occur on-site. Land clearing will be done with typical construction equipment and methods. 9. The existing "wagon road" between the farm and proposed parking area is generally 6 to 8 feet wide and trends southeast to northwest through mature mixed deciduous and coniferous forest. The surface is currently compacted soil and gravel from a historical road now overgrown by grass and weeds. The road rises steeply out of the farm over a ridge and down awest-facing slope to the proposed parking areas. According to the environmental checklist application, approximately 125 cubic yards of mulching will be imported to improve and stabilize the trail surfacing. 10. Storm water runoff from the proposed construction will drain by sheet flow to an on-site bioretention facility designed in accordance with city standards. The biofiltration facility is designed to overflow for dispersal onto the remaining on-site pasture area located to the north. Water quality requirements are met by the use of filter strips along the edge of the multiple wet pools (rain gardens) and the water quality benefits of the grasscrete pavers in the vehicle parking stall areas. The proposed biofiltration area will be planted with water tolerant plants. The pervious areas around the biorention facility and berms will be planted with native trees and shrubs to further promote infiltration and evaportranspiration of water. The proposed storm facility is described in the report: Surface Water Technical Information Report, June 17, 2009, WR Consulting. Storm water runoff from the trail surfaces will be infiltrated into the adjacent natural and landscaped areas. The trails will be designed and constructed to disperse runoff into the adjacent vegetated areas away from the River. Page 4 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 11. The majority of the parking is located within 200 feet of the Green River and is regulated by the City of Auburn pursuant to the Shoreline Management Act. Under the City's Shoreline Master Program the Green River is considered a Class I Stream. The city's critical area regulations require a 100-foot critical areas buffer measured from the Ordinary High Water Mark (OHWM) of the Class I streams. The Ordinary High Water Mark is documented in the report: Ordinary High Water Mark Study, September 15, 2009, Watershed Company. Although the project area does not front the River, approximately the westernmost 30 feet of the proposed parking is within the 100-foot class I Stream buffer. Two driveways (2,200 square feet total) will be constructed within the 100-foot shoreline buffer where stream buffer mitigation (4,500 square feet) will be provided to mitigate for the stream buffer impacts. Access driveways are the only feature to be constructed in the 100-foot buffer to the Green River. Impacts from the construction will be minimized by the use of pervious pavement treatments where possible. The mitigation plan will install 4,500 square feet of native trees and shrubs in the Green River buffer. The enhanced buffer will increase diversity of plant material and increase the proportion of native plants for habitat value, provide water quality benefits and partially screen views of the parking lot from Green River Road SE. 12. The proposed mitigation for stream (River) buffer impacts are described in the report: M~ Olson Farm Buffer Mitigation, Monitoring Maintenance and Contingency Plan, ESA Adolfson, March 2010. According to the report, total landscape area to be planted as part of the project construction is approximately 23,700 square feet. The landscaped areas outside the 100-foot critical areas buffer are not counted towards satisfying the mitigation requirements. 13. The site is not located within the FEMA identified 100-year floodplain and no activities will occur within the 100-year floodplain per Map Number 5303301252, May 16, 1995. 14. A wetland delineation was conducted for the project parcel and no wetlands were found to be present, Mary Olson Farm Wetland Investigation and Site Review, ESA Adolfson, July 16, 2008. However, Auburn's critical areas inventory maps show that a wetland maybe present on the west side of Green River Road SE, in unincorporated area. It is possible that buffers associated with this wetland, if present, may extend across the Road onto the project parcel. The project is designed to minimize intrusion into the stream buffer and thereby minimize impact on the any wetland buffers as well. In addition, stream buffer enhancements would also be wetland buffer enhancements. 15. Information on the site's soil characteristic can be found in the report: Geotechnical En_, ineerinq Study for the Proposed Olson Farm Parking Lot and Bio-retention Pond, July 16, 2009, Geotech Consultants. The report indicates the site is composed of an approximately 3-inch layer of organic material and roots (topsoil) over loose fine grained sandy silt (alluvium) to the maximum explored depth of 4 feet. The report discusses the use of a concrete or stabilized polymer replicating a natural soil appearance as the pavement surface. The plans indicate that about 1 to 2 feet of fill is needed over the existing ground surface in the parking lot driveway to provide a stabile surface. Prior to fill placement existing site soils require compaction. The base fill layer beneath areas of grasscrete need to be course, granular material in order to be permeable. The site's soils have high moisture content and may be difficult to compact. The moisture content also complicates the placement of cement and polymer. The geotechnical reports provides particular recommendations for construction, cut and fill slopes and excavation operations. 16. The project will require excavation and fill of approximately 1,000 cubic yards of on-site soils. The project will require the importation and grading of approximately 586 tons of crushed rock for subgrade and 125 cubic yards for mulching for trail surfacing. No export of material is planned. Page 5 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 17. The Mary Olson Farm is identified in the 2005 City of Auburn Parks, Recreation, and Open Space Plan, an element of the Auburn Comprehensive Plan and is categorized as a Community Park. The Plan's needs assessment discusses designing and building visitor amenities for the Mary Olson Farm such as parking and restrooms. While not specifically mentioned, the project is generally consistent with the Comprehensive Plan Chapter discussion of Historic Preservation, Chapter 10 and parks, Recreation and Open Space, Chapter 11. 18. The City of Auburn uses the 2009 City of Auburn Shoreline Master Program (SMP) to regulate development and management of the City's shoreline. Under the City Shoreline Master Program, the Green River is defined as a "shoreline of state-wide significance." (RCW 90.58.030). Under the Shoreline Management Act, all development occurring within the 200-foot shoreline jurisdiction area adjacent to the River must be consistent with policies and regulations of the local shoreline master program (SMP), as well as with the policies of the State Shoreline Management Act. 19. The City received one comment letter in response to the public comment period of the Notice of Application and the Shoreline Permit. The comment letter sent by e-mail from Karen Water, Watershed and Land Use Team Leader representing the Muckleshoot Indian Tribe expressed three areas of concern with the project including; loss of groundwater recharge, potential to increase air temperatures, and precluding future floodplain restoration. 20. The City evaluated the comments and considered them in the recommendation to the Hearing Examiner. The proposal for multiple wet pools (rain gardens) for the on-site infiltration of storm water maximizes to the extent feasible, the recharging of groundwater. The proposal is consistent with newer low impact development techniques. To address the second concern, the facility maximizes to the extent feasible the use of pervious pavements to avoid creating additional sources of solar absorbing materials that generate heat and modify air temperatures which could further exacerbate existing water temperature problems of the Green River. Pervious pavements are used in those areas where a smooth continuous surface is not needed to support the weight of buses or to meet accessibility requirements. The comment also recommended the installation of additional taller trees to provide additional shading of paved areas, however, while the access will be gated, visual accessibility to the parking lot is needed for security. To respond to the third concern, the project is located on the opposite side of the River from Green River Road SE and a King County-owned parcel intervenes between the River and road (North Green River Park). It is not possible to predict how future currently unknown projects to restore salmon habitat and habitat forming processes will affect the parking lot project in the future and thus assure that the projects are compatible. The project is a low intensity project. 21. Pursuant ACC 16.08.080, the Hearing Examiner shall hold at least one public hearing on the shoreline substantial development permit. 22. The City has issued a SEPA Determination of Non-Significance (DNS) on June 16, 2009 with an associated 14-day appeal period. The appeal deadline is 5:00 pm on Tuesday, June 29, 2010. 23. The contents of the case file for this project (SHL10-0003) are hereby incorporated by reference and made part of the record of this hearing. Page 6 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 CONCLUSIONS Staff has concluded that a shoreline substantial development permit should be approved in that the project and use are consistent with the "Urban Conservancy" shoreline environment designation, as well as with the approval criteria for the shoreline substantial development permit. 1. The Shoreline Management rules (WAC 173-27-140) set forth the following two criteria for all developments within the shoreline jurisdiction. (A) No authorization to undertake use or development on shorelines of the state shall be granted by the local government unless upon review the use or development is determined to be consistent with the policy and provisions of the Shoreline Management Act and the master program. (B) No permit shall be issued for any new or expanded building or structure of more than thirty- five feet above average grade level on shorelines of the state that will obstruct the view of a substantial number of residences on areas adjoining such shorelines except where a master program does not prohibit the same and then only when overriding considerations of the public interest will be served. 2. The proposed project is consistent with the Shoreline Management Act and the City's Shoreline Master Program (SMP). The City's Program identifies the east side of the Green River in the project area to be "Urban Conservancy" environment designations. Section 3.3 at page 3-2 of the SMP describes the purpose of the "Urban Conservancy" environment as: to protect and restore ecological functions of open space, floodplain and other sensitive lands where they exist in urban and developed settings, while allowing a variety of compatible uses consistent with the Comprehensive Plan." The proposed project is an environmentally sensitive, low intensive development that supports the recreational, cultural and educational use of the Mary Olson Farm. 3. Section 3.3.3 of the SMP (page 3-2) provides the following related Management Policies applicable to the Urban Conservancy Environment: 1. Primary allowed uses and their associated development standards should preserve the natural character of the area or promote preservation of open space, floodplain or sensitive lands where they exist in urban and developed settings, either directly or over the long term. Uses that result in restoration of ecological functions should be allowed if the use is otherwise compatible with the purpose of the environment and the setting. 2. Standards should be established for shoreline stabilization measures, vegetation conservation, water quality, and shoreline modifications within the "urban conservancy" designation. These standards should ensure that new development does not result in a net loss of shoreline ecological functions or further degrade other shoreline values. 3. Public access and public recreation objectives should be implemented whenever feasible and significant ecological impacts can be mitigated. 4. Water-oriented uses should be given priority over nonwater-oriented uses. For shoreline areas with commercial development or adjacent to commercially navigable waters, water-dependent uses should be given highest priority. Page 7 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 5. Existing mining and related activities may bean appropriate use within the urban conservancy environment when conducted in a manner consistent with the environment policies and the provisions of WAC 173-26-241 (3)(h) and when located consistent with mineral resource lands designation criteria pursuant to RCW 36.70A.170 and WAC 365-190-070. No new mining uses or expansion of existing mines should be permitted within the shoreline jurisdiction. The proposed project is consistent with the Management Policies of the Urban Conservancy Environment. The parking lot is proposed to serve a low intensity use of the Mary Olson Farm. The project itself includes limited improvements to meet the functional need proximate to the farm and includes appropriate low impact development construction techniques, environmental mitigation and native landscape restoration. 4. The Permitted Use Table of the SMP, Pages 4-19 through 4-24, as a summary of the use regulations allows recreational uses within the urban Conservancy shoreline environment. 5. Section 4.7.7 on page 4-36 the City's SMP allows recreational uses within the Urban Conservancy environment. Additionally, the program provides the following policies applicable to recreational uses: 1. Prioritize shoreline recreational development that provides public access, enjoyment and use of the water and shorelines of the State over other non water-oriented recreational uses. 2. Shoreline areas with the potential for providing recreation or public access opportunities should be identified for this use and, wherever possible, acquired and incorporated into the Public Park and open space system. 3. Public recreational facilities should be located, designed and operated in a manner consistent with the purpose of the environment designation in which they are located and such that no net loss of shoreline ecological functions orecosystem-wide processes result. 4. The coordination of local, state, and federal recreation planning should be encouraged so as to mutually satisfy needs. Shoreline recreational developments should be consistent with the City's Comprehensive Plan and Parks, Recreation and Open Space Plan. 5. Recreational development should not interfere with public use of navigable waters. The proposed project is consistent with the policies applicable to recreational uses. The parking lot will provide location for public access to the river environment. Views of the river will be available from the parking lot and the access trail. The project site is proposed to be developed meet the functional need and includes appropriate low impact development construction techniques, environmental mitigation and native landscape restoration. 6. As required by the first criteria of the Shoreline Management Rules (WAC 173-27-140), the project is found to be consistent with policy and provisions of both the Shoreline Management Act and the local SMP. See Item 1, above. The application has demonstrated compliance with the applicable requirements of the City's Shoreline Master Program. The parking lot in support of the recreational use that is a permitted use within the Urban Conservancy environment designation in an area that has the least intrusion and impact to critical areas: the Green River buffer and the two hundred foot area of shoreline jurisdiction. As required by the second criteria of the Shoreline Management Rules (WAC 173-27-140), the project will not adversely affect the scenic quality of the river environment, as the project itself consists of a low parking lot separated from the Green River Road SE by landscape screen of native vegetation. While development of the parking lot will result in a loss of vegetated area, the proposed Page 8 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 plantings will enhance the site with supplemental native plantings to increase the diversity over existing conditions. 8. The proposed project is consistent with the City of Auburn Comprehensive Plan and the Parks, Recreation, and Open Space Plan. Relevant Comprehensive Plan Policies -Chapter 10, Historic Preservation • HP-1 The City shall encourage the protection, preservation, recovery and rehabilitation of significant archaeological resources and historic sites. • HP-4 The City should assist appropriate efforts to rehabilitate sites and buildings with unique or significant historic characteristics. Relevant Comprehensive Plan Policies -Chapter 11, Parks Recreation and Open Space • PR-6 The City shall continue to provide a broad variety of organized recreational and cultural opportunities for all residents. Consideration of the diverse interests and abilities of our residents shall be integral to the development of athletic, cultural, specialized recreation and leisure and educational programs and facilities offered or maintained by the City. • PR-7 The City shall seek to retain as open space those areas having a unique combination of open space values, including: separation or buffering between incompatible land uses; visual delineation of the City or a distinct area or neighborhood of the City; unusually productive wildlife habitat; wetlands; floodwater or stormwater storage; stormwater purification; recreational value; historic or cultural value; aesthetic value; and educational value. • PR-10 The City shall seek to acquire open space lands which provide significant environmental or social value. Such open space shall be managed to conserve and improve the natural, visual, historic and cultural resources associated with the land. • PR-12 Development within areas designated for open space uses shall, in general, be non- intensive incharacter. Development shall be designed and sited in a manner that minimizes or mitigates disruption of the most important open space values of the site. Appropriate uses within designated open space areas may, include (but not necessarily be limited to): parks and other recreational facilities; agriculture; stormwater storage; and watershed. It is recognized that designating private property for open space uses does not establish or promote any public access rights to such property. The project isfor acity-owned parking lot and associated improvements that will provide public access to the historic and cultural recreation facilities of the Mary Olson Farm. The project will provide a location for visitors to the farm to enjoy the shorelines of the Green River. 9. The proposed project is consistent or is capable of being consistent with the Municipal Code. 10. The Shoreline Management rules at WAC 173-27-150 set forth the following three criteria that must be met for approval of a Shoreline substantial development permit. The project must be consistent with: • the policies and procedures of the Shoreline Management Act; • the shoreline regulations; and, • the applicable master program. As noted above, the project and use complies with the stated policies and procedures of the Act and Rules and, complies with the local Shoreline Master Program. Page 9 of 10 Agenda Subject: Public Hearing SHL10-0003 Date: 6/24/2010 RECOMMENDATION Based on the application, findings and conclusions of the Staff report, Staff recommends that the Hearing Examiner APPROVE the Shoreline Substantial Development Permit subject to the following condition: 1. Project construction shall generally consistent with the Mary Olson Farm Parking Improvements (95%construction plans), Sheets 1 through 12, City of Auburn Public Works Department, dated February 9, 2010, Received March 12, 2010. Staff reserves the right to supplement the record of the case to respond to matters and information raised subsequent to the writing of this report. Page 10 of 10 Exhibit 2 Master Land Use Application Received March 12, 2010 z ~ ~ x - ~ ~ ~ - _ _ _ F y ~ MASTER LAND USFAPPLICATIGN-PLANNING APPLICATIONS Project Name ~fi ~ ~ ~ C~r~31~. 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Special Home occupation Permit* Comprehensive Plan Amendment Next or Map~* Substantial Shoreline Development* Conditional .Use Permit* Surface Mining Permit* Critical Areas Variance* Temporary Use Permit Development Agreement* Variance* Environmental Review ~SEPA}~ *Please note that public notification is Final Plat required. A separate cost is charged Preliminary Plat* for the signs. City prepays ' ~ ut PUD Site Plan Approval applicant re ng. Reasonable Use Exce tion* ~ ~ Page 1 of 2 t ~~f.~~~ _ F ~ ~ ~ ~e i ~ ~ a . Exhibit 3 Vicinity Map SE 2741 ST I a w y ~ ~ ~ ~ ~ ~ cep ~ ~ ~ ~ ° SE 276t ST ~ w w ~ SE 280th ST w ~ SE 281st ST ~ ~ SE ~ 282n ST o ~ w ~ ~ ~ W o~ ST ° SE 284th Pro osed Parking Lot ~ MARY SE 28fith ST ' also w . 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Yw 0~~= N UZU ym O ~<~i7T TN"ud ~ ~ p o~~n of ~~o oi~^ o~ ~n m?~YW o i V ~~30~ a~ o~cJ'n °~a~ rcZ = ~~c°~mzda~ Vo ~ i ~ ~ Z ❑ r ri r N ~ ° z r C ~Nr C N =~o ~ ~ ~ 0 . ~~~o~ m ~y~x o~~~ ~ D v ~ ~ ~ ~ n ~ ~ ~ D ~ . m p ~ m ~ p c~ U3 c ~ ~ TI o ~ m ~ ~ ~ ~ ~ r ~ 6 ~ (D ~ ~1 0 (D ~ ~ ~ o m N m ~ . m p ~z6 ~ ~ ° ~ ~ ~ ~ ~ z ©o~ AUBU37N WAY NORTH D~9 _ NOR .......r j ~ G TH ti i ~ ~I ~ ~ Z i_` ~ z ~ C ~ ~ i~_, ~ ~ ; m z ~ ~ d~ ~r ~x J N y il~ Z CC D °o~ O . D r ~ ~ m~_ m ~ ~ sZ~ ~ ~ O w.._, ~ ! _ ~ ~ C i ~ ~ i'_ ~ i ~ ~ ~ Z ~ ~ _ __L O ••n f i ~ ~ ~ A ~}1 ' ~ /r I ~ N ~ m : _ RI ~ Q 116TH AVE f I 1' ~ ! ~ I f I I..r cncncncnvacncncnu~cncncn v mmmmrnmmmmmmm~ mmmrnrnmmmmmmm~ -~~~c~ooya~cn~wty-~ Z IV p r r r r r r r r r rrr~~~mrn=~~n- rrU~~•~•-~~~oooo Z aQ~~:~ann~w~<0 cn N ~❑❑~•Z~o o ~ ~ X ~(7C~.~.~oSyrt~~(~ _ ~ ~ N N ~ v N• N (D ~ N Z ~ 3 7 aoz z ' m am m D~ ~ T~ (A ~ ~ ~ ~ m m ~ Sil a ~ ~ ~ ~ CD _o' A ~ ~ ~ D ' m m ~ O rT ~ ~ ~ W a ~ ~ ~ m m a ~ n ~ ~1 ~ ~ CQ iU ~ ~ ~ ~ Am x D N n. N as . o Z C o ~ U= ~ ~ ~ ~ A o ~ m a a a a o a v p ~ z m m ~ m m m m ~ ~ r-h ~ ~ ~ m ~ ~ ~ m ~ ~ ~ ~ ~ s;uatuanoadw~ ~ui~aed z m ~ ~ ~o O ~ uu~~ uos~p IGew ~ . Exhibit 5 Notice of Application CITY 4F Peter B. Lewis, Mayor VAS H ~ N GTE N 25 West Main Street ~ Auburn WA 98001-4998 ~ www.auburnwa.gov ~ 253-931-3000 This notice is to inform you that the City of Auburn has received the following application that may be of interest to you. The application may be reviewed at the City of Auburn Department of Planning and Development,l East main 25 vlJest Main Street, Auburn, VvA. Nature of Project or Reques#: The ro osed action is a shoreline ermit for the site re aration and develo ment of remote a roximatel 32-stall arkin lot. The arkin lot and connecting trail are_proposed forthe east side of Green River Road SE and,separated from the fiarmstead_by an intervening hillside. ' ~ ' ,,,_;s composed of four parcels: 052105906, 3222059113, 32~2~59031, ocat~on, _ __e _s~te ' and 322059032. The construction is proposed on parcel 3222059D32, north of the ' Farmstead at 28~~8 Green River Road. The site is within the Section 32-~?-fl5 East, UI~.M. Date of Notice of Application: May 26, 2410 Permit Application Date: March 12, 2010 Date of Notice of Completeness: April 5, 2010 File No: SHL10-0003, Shoreline Permit Applicant: Kim _Truong, City of Auburn Plannin~q & Development Dept. In addition to the application given above, the applicant has also filed an environmental checklist application ~SEPA File No. SEP~ o-ooos~. Based on the City's review of this environmental checklist application, the City expects to issue a Determination of Non Significance DNS}for the proposal. The review process for approval of the proposal may include requiring mitigation measures under applicable codes and imposition of mitigation measures regardless of whether an Environmental Impact Statement ~E[S} is prepared. Other Permits Required: No other permits are required prior to the issuance of a SEPA Determination; however, subsequent development will be required to obtain all necessary permits or approvals that may include city building permits, boundary line elimination, grading permits, and shoreline permit. The Project may require Seattle-King County Public Health approval for vault restroams ,and a King County right-of~way use permit. Additional Studies Provided with the Application: • Master Plan for Olson Farm February 2000, Boyle Wagner Architects • Mar ~Ison Farm Wetiand Investi ation and Site Review, ESA Adolfson, July 16, 2008 • Geotechnical E_nQineerinq Sfiudy for the Proposed Olson Farm Parking Lot and Bioretention Panel July 16, 2009, Geotech Consultants ~ r • Crdinar Hi h Water Mark Stud ,September 15 2009, Watershed Company • Surface Water Technical Information Re ort October 1, 2009, WR Consulting • Archaeolo ical Testin Permit for the Mar bison Farrn Auburn Washin ton, Entrix, Inc., June 12, 2009 . ~ ..r T~.::~ . RU]3UKN * MORE THAN YOU IMAGINED Cultural Resources Section 106 Technical Re ort Mar Olson Farm Archaealo ical Testin Entrix, lnc., December 22, 2009 • Mar Olson Farm Buffer Miti ation Monitorin Maintenance and Contin enc Plan ESA Adolfsan, March 2010 N4AISEPA Public Comment Period: You are invited to comment, request a copy of the final decision, when available, and be made aware of any appeal rights. Comments forthe environmental decision must be received in writing by th_e Auburn Department of Planning and Community Development at 25 West Main, Auburn, WA 9SDD1-4998 before 5:4o p.m. on June ~0, 2Q~~. Public Hearings: A public hearing by the Hearing Examiner on the shoreline permit will be held June 29, Z01o, 5:3o pm City Council Chambers, 25 ~Ilest Main Street, Auburn WA 9804. Any person desiring to present views with regard to the shoreline permit application may do~ so in writing to the Hearing Examiner up to within 3D days of the date of publication of this notice and up to the hearing. Such notification or submission of views shall entitle said - persons to a copy of the decision. Statement of Consistency and List of Applicable Development Regulations: This proposal is subject to and shall be consistent with the Auburn City Code, Auburn Comprehensive Plan, Auburn Shoreline Management Program, Public Works Design and Construction Standards, Building Code and Fire Codes. If you have further comments or questions related to this application, you may contact Jeff Dixon, Planning Department at 'dixon auburnwa. ov or ~253~ 804-5D33. If you call or write, please reference File No., SEP1 o-DDO8. .^VT S' ~i.~Y~V YFiLY d9~~~~~~~~~ 3~22a~91~1 IEHT i w ~n - f , ; ~ ; -SE•~815T-5T ~ S~'~~:45~' S~~; ~ i ~ ~ r W i OS 4}VC r~ ~ I~ aDa~2aDaa~ ~ ~ , ~ .f ~ Y N J ~ ~ ~ ~ ~ ~ ~ / I } I r~ ~ ~ - ~ i ~ ~ S f ~ - ~-*~y . ' - 3RD"~T~E'~ _ ~ W ~ ~2~~av9a3~ 32~~D~9118 ~ ~ s ' aaa~~Daa~~ aDa42a DaD3 a~a~aaa~ aoa~zDDa~~ ~ p ° o ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ' ~ D~a1a~~aas ..•~E~~oTH:sT_.__ aaD~~DaaD1 ~1~1~~Da~a ' 21~1~~DDFD i~ ~w _ aaa42aDaa~ 1, a~F1D59D11 ~ 574 Feo 062106 9002 r' Exhibit 6 Affidavit of Posting CITY OF WASHINGTON AFFIDAVIT OF POSTING OF LEGAL NOTICE BY APPLICANT Application No.: SHL10-0003 / SEP10-0008 Applicant: Kim Truong, City of Auburn Planning & Development Department Location: The proposed action is a shoreline permit for the site preparation and development of remote, approximately 32-stall parking lot. The parking lot and connecting trail are proposed for the east side of Green River Road SE and separated from the farmstead by an intervening hillside. Date of Public Hearing: June 29, 2010 certify that on ~Gt ~i o2.~ . o~ ~ I did erect a land use posting board at the location a ove, which included a Notice of Public Hearing for the above referenced application, as required by Auburn City Code 1.27, 14.07.040 and 18.66.130. The board was erected at least 10 days prior to the public hearing date noted above. declare under penalty of perjury of the laws of the State of Washington that the foregoing is true and correct. Na e (please print or e) Date Signa NOTE This affidavit must be returned to the Planning and Development Department at least one week prior to the scheduled hearing date or the hearing maybe postponed. G:WBD~Shoreline\Olson Farm parking IotWffidavit OF Posting -Applicant .dx Exhibit 7 Affidavit of Mailing CITY OF ~ w.. _ - - - ~ ~ WASHINGTON AFFIDAVIT GF MAILING 4F LEGAL NGTICE Application No.: SHL14-00031 SEP10-0008 Applicant: Kim Truong, City of Auburn Planning & Development Department Location: The proposed action is a shoreline permit for the site preparation and development of a remote, approximately 32-stall parking lot. The parking lot and . connecting trail are proposed for the east side,of Green River Road SE and , separated from the farmstead by an intervening hillside. Date of Public Hearing: June 29, 2010 I certify that on May 26, 2410 did send a Notice of Public Hearing for the above referenced application, as required by Auburn City Code 14.O1.D44 and 15.66.130, to all property owners located within 340 feet of the affected site. Said Notice was mailed pre-paid stamped throu h g the United States Postal Service at least 14 days prior to the public hearing date noted above. f declare under penalty of perjury of the laws of the State of UVashington that the foregoin is g true and correct. ( Si nature: j ~ 3~'- i~ g ~ ' 'ter ~ fit. ~ ~ Printed name: r ~ ~r= ~ ~~,,1' ~ .,3d., ,,s 8. 6 i gg i 's t Title: ~ ~ ' ~ - ' • ~ 4` Exhibit 8 Confirmation of Publication of Legal Notice i. . . , ~ ~ ~ seatt~etimes.cam PD Box 70, Seattle, VILA 98111 . AUBURN CITY ~F-FINANCE DEPT ATTN CITY CLERK 25 WEST MAIN AUBURN, VVA 98001 Re: Advertiser Account #30785204 Ad 789630600 Affidavit of Publication 40?875113 STATE OF WASHINGTON Counties of King and Snohomish The undersigned, on oath states that helshe is an authorized representative of The Seattle Times Company, publisher of The Seattle Times of general circulation published daily in King and Snohomish Counties, State of Uashington. The Seattle Times has been approved as a legal newspaper by orders of the Superior Court of King and Snohomish Counties. The notice, in the exact form annexed, was published in the regular and entire issue of said paper or papers and distributed to Its subscribers during all of the said period. Newspaper ~ Publication,Date The Seattle Times 05/26/10 ~ r~ ..,~~.a.~}.~.;~~~~.~ ~~_~~.~~f ~~z_,~ Signature ~ ti ~ ~ w 5~i'~~~~cri~ d and sworn to before me on ~ ~ A ~ . ~C. ~ ~ ~~~yyy ~ r ~ ~ ~IGNA J RE} Notary Public and or the a of Washington, residing at Seattle ~~i f~~~~ ~ ~r r{~ ~ r~ C~ ~~~~~l1►~~~1~r~1`~~~ ~ ~ ~ it11.~~ .F ~ , . z . seatt~etimes.com Re Advertiser Account #30185204 Ad # 789fi30fiDD Ad TEXT:NOTICE OF APPLICATION the City expects to issue a Entrix, Management Determination of Non-Signifi Inc., June i2, 2xa9 Program, Public Works Design This notice is to inform you that cance DNS}far the proposal, c Cultural Resources Section and Construction Standards, The review process for approv 106 Technical Report Mary 41 Building Code and Fire Codes. the City of Auburn has received a1 of the proposal may include son Farm Archaeological Test the following application that requiring mitigation measures ing, Entrix, Inc,, December 22, if you have further comments may be of interest to you. The under applicable codes and im 2009 or questions related to this ap application may be reviewed at position of mitigation measures c Mary Olean Farm Buffer Mit plicatian, you may contact Jeff the City of Auburn Department regardless of whether an Envi igation, Monitoring Mainte Dixon, Planning Department at of Planning and Development, ranmental Impact Statement Hance and Contingency Plan, jdixnn@auburnwa.gov or X253} 1 East Main, Auburn, WA. LEIS} is prepared. ESA Adolfson, March 2010 804-5033. If you call or write, please reference File Na, Nature of Project or Request: Other Permits Required: No N~AISEPA Public Comment SEP10-aa08. The proposed action is a shore other permits are required Period: You are invited to com line permit for the site prepara prior to the issuance of a SEPA ment, request a copy of the fi tian and development of re Determination; however, sub Hal decision, when available, mote, approximately 32-stall Sequent development will be re and be made aware of any ap parking lot. The parking lot and quired to obtain all necessary peal rights, Comments far the connecting trail are proposed permits or approvals that may environmental decision must for the east side of Green River include city building permits, be received in writing by the Road SE and separated from boundary line elimination, Auburn Department of Plan the farmstead by an interven grading permits, and shoreline Wing and Community Develop ing hillside. permit. The Project may re ment at 25 West Main, Auburn, quire Seattle-King County Pub WA 98x01.4998 before S:Ox Location: The site is composed lic Health approval fvr vault p.m. of four parcels: x521 a590a6, restroams and a King County on June 1 x, 2010. 3222x59113, 3222059031 and right-of-way use permit. 3222059032. The construction is Public Hearings: A public Additional Studies Provided hearing by the Hearing Exam proposed on Parcel with the Application: finer on the shoreline permit will 3222x59032, c Master Plan for Olson Farm, be held June 29, 2x10, 5:30 pm north of the Farmstead at 28728 February 200x, Boyle Wagner City Council Chambers, 25 West Green River Road, The site is Architects within the 5ectian 32-22.05 c Mary Olson Farm Wetland Main Street, Auburn WA 98x01. East, Investigation and Site Review, Any person desiring to present W.M. ESA Adolfson, July 16, 20x8 views with regard to the shore c Geotechnical Engineering line permit application may do Date of Notice of Application: Study for the Proposed Clsan sa in writing to the Hearing Ex May 26, 2010 Farm Parking Lot and Blare aminer up to within 30 days of tendon Pond July 16, 2009, Geo the date of publication of this Permit Application Date: tech Consultants notice and up to the hearing. March 12, 2x10 c Ordinary High Water Mark Such notification ar submission Study, September 15 2009, Wa Date of Notice of Completeness: tershed Company of views shall entitle said per c Surface Water Technical In sons to a copy of the decision. Apri15, 2010 formation Report, Dctober 1, 2x09, WR Consulting Statement of Consistency and File No: c Archaeological Testing Per List of Applicable Development SHL10-00x3, Shoreline Permit mit for the Mary Olson Farm, Regulations: This proposal is Auburn Washington, subject to and shall be cansis Applicant: tent with the Auburn City Code, ` Kim Truong, City of Auburn ~ ~ Auburn Comprehensive Plan; ~ ` Planning & Developmen# Dep#. Auburn Shoreline In addition to the application given above, the applicant has also filed an environmental checklist application jSEPA File Na. SEP10.0008), Based on the City's review of this envi . ronmental checklist applica tian, Exhibit 9 SEPA Final Determination of Non-Significance CITY aF ~ Peter B. Lewis, Mayor WAS H I ~ GTON 25 West Main Street ~ Auburn WA 98001-4998 ~ www.auburnwa.gov ~ 253-931-3000 FINAL DETERMINAT[oN of NoN-SIGNIFICANCE SEP10-0008 DESCRIPTION aF PRaPflSAL: Shoreline Permit for the site re oration and develo ment of remote, approximatel, 32-stall parking lot for the Mary ~Isen Farmstead. The_parkin. lot and connecting trail are proposed for the east side of Green River Road SE and separated from.the farmstead b an intervenin hillside. PR4PGNENT: Kim Truon Develo meat Review En ineer Cit of Auburn Plannin and Development LGCATIGN: The rv'ect occurs over four arcels identified as arcel No. 0521059005 3222059113, 3222059031 and 3222059032. The project site is north of the Farmstead which occurs on Parcel No. 3222059032 and addressed as 28128 Green River Road, within Section 32, Township 22 North. ran eq 5 East, W.M. LEAD AGENCY: City of Auburn The lead agency for this proposal has determined that it does not have a probable significant adverse impact on the environment. An environmental impact statement LEIS} is not required under RCW 43.21 C.030~2}~c}, This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. RESPGNSIBLE GFFICIAL: Kevin Snyder, A.I.C.P. P~SITIQNITITLE: Interim Director, Dept. Planning & Development ADDRESS: ~ 25 West Main Street Auburn, Washington 98001 X253} 931-3090 ~ ~ , DATE ISSUED: June 16, 201 D SIGNATURE: ~ ~ ' Any person aggrieved of this final determination may file an appeal with the Aubur City Clerk within 14 days of the date of issuance of this notice. All appeals of the above determination must be filed by 5:00 P.M. on June 29, 2010. Note: This determinat"ron does not constitute approval of the proposal. Approval of the proposal can only be made by the legislative or administrative body vested with that authority. It is anticipated that conditions, if needed, can be applied through authority to condition the shoreline permit The proposal will be required to meet all applicable regulations. AT T71T TTl 1► T ► ,r,r. r -r7 r A ► r ~rrtir r r► ~ A nT►, rrrl I-VUr)U t,~,Iv * MUKt MAN YUU 1M1' URNLU Exhibit 10 JARPA Application - Department of Ecology ~a~,srarE~x ~ E ~ •--_-^AGENCYUSEONLY-_-_---___-- w x I ~ r ~ ~ o ~ ~ ~ ~ a. ~sas U5 Army Corps VISAS H f N G T O N STATE of Engineers ~ ~ Date received: Seattle pislr~ct ~ ~ I ~ Joint A uatic Resources Permit q A li i n ARPA F rm hel pp cat o ~J ~ o ~ ~ , r ~ ~ i r USE BLACK OR BLUE INK TO ENTER ANSWERS IN WHITE SPACES BELQW. ; Agency reference ~ ~ Tax Parcet #(s}: Part ~-Project identification - " - - - - - - - - - - - - - - - - " - r - - - - - - - - - - - - - - - - - r Unique project information that makes it easy to identify. h[ e.~ 1a. Unique Project Identifier Number UPI hel • Don't have one yet? Get one at http:llwww.e~ermitting.wa.gov or cal! the Washington Governor's Office of Regulatory Assistance at ~8ga} 911-gg43. 436085-09-01 ~ b. Project Name Examples: Smith's Dock or Seabrook Lane Development} hell Mary Olson Farm Expansion Parking Lot and Trail Improvements Part 2-Applicant The person or organization responsible for the project. h[.~] ~a. Narne Last, First, Middle} and ~rganizatlon cif applicable} Dowdy, Dennis City of Auburn 2b. Mailing Address street or Po Box} 25 West Main Street 2c. City, State, Zip Auburn, VILA 98001-4998 2d. Phone 2e. Phone ~2} 2f. Fax 2 . E-r>lail X253} 931-3023 X253} 931-3010 X253} 931-3053 ddowdy a~auburnwa.gov Part 3-Authorized Agent or Contact Person authorized to represent the applicant about the project. Note: Authorized agents}must sign 11 b. of this application.} hG~ 3a. Name Last, First, Middle} and OrganlZatlon cif applicable} Truong, Kim l City of Auburn 3b. Mailing Address street or Po Box} 25 VIlest Main Street y p f 3C. Clt ,State, Zf ~ r Auburn, VVA 98001 ~~~.-•c,~ f, 3d. Phone ~ 3e. Phone 2 3f. Fax 3 . E-mail ~ k ~ 253 } 804-5032 ~ 253 } 931-3090 ~ 253 } 804-3114 kbtruong@auburnwa.gov 1 DARPA 2009 Page 1 of 12 Part 4--Pro ert owner s nel p Y Contact information for people or organizations owning the property~ies} where the project will occur. he[~]I ® Same as applicant. Skip to Part 5.} ❑ Repair or maintenance activities on existing rights-of-way or easements. Ski to Part 5. p } ❑ There are multiple property owners. Complete the section below and use JARPA Attachment A for each additional property owner. 4a. Name Last, First, Middle} and Organization ~ifapplicable} 4b. Mailing Address street or Po Box} 4c. City, State, Zip . , 4d. Phone ~1} 4e. Phone ~2} 4f. Fax 4 . E-mail ~ } ~ } ~ } Part 5--Project Location4s~ Identifying information about the property or properties where the project will occur. hef ® There are multiple properties or project locations ~e.g., linear projects}. Complete the section below and use JARPA Attachment B foreach additional property. 5a. Street Address Cannot be a PD Box. If there is no address, provide other location information in 5n.} h[ ems] 28128 Green River Road 5b. City, State, Zlp ~If the project is not in a city or town, provide the name of the nearest city or town.} h[ elp] Auburn, V11A 98031 5C. County h[ elp] King County 5d. Provide the section, township, and range for the project location. hel ~/4 Section Section Township Range SUIC 32 22 05 5e. Provide the latitude and longitude of the project location. h[ elf • Example: 41.D3922 N lat. l -122,89142 VII long North Latitude 47°20'43" ; vilest Longitude 122°12'15" 5f. List the tax parcel numbers}for the project location. h[am] • The local county assessor's office can provide this information. 3222059g32 5g. indicate the type of ownership of the property. Check all that apply.} h~ ❑ State awned Aquatic Land ❑ Tribal ❑ Private JARPA 2009 Page 2 of 12 Y ® Other publicly owned federal, state, county, city, special districts like schools, ports, etc. 5h. Contact information for all adjoining property owners, lessees, etc. ~If you need more space, use JARPA Attachment C.~ h[ elp~ Name Mailing Address Tax Parcel # cif knowny City of Kent 220 4t" Ave S, Kent, WA 98032 3222059191, -9020 City of Auburn 25 West Main Street, Auburn WA 98001 0521059006, -9011 King County 500 4~" Ave, Seattle WA 98104 3122059011 Daniel and Donna vvatts 28261 108t" Ave SE, Kent, WA 98031 3222059118, -9166, -9165, -9164, -9132, -9124, -9163 Steven Lewis 10608 SE 291ST ST, Auburn, WA 98092 2161550060 Steven and Ann Mehl ~ 10611 SE 291ST ST, Auburn, WA 98092 2161550010 5i. Is any part of the project area within a 100-year flood plain? hel ❑ Yes ®No ❑ Don't know 5j. Briefly describe the vegetation and habitat conditions on the property. h~ This property is mostly forested with deciduous and evergreen trees, pastures, and shrubs except for the existing farmstead area. Habitat conditions in the forested area are good for birds and wildlife. The farmstead consists of farm structures with grass cover and dirt traillaccess. Habitat conditions at the farmstead are very poor, with little cover for animals and little foraging value in the grasses saver. 5k. Describe how the property is currently used. h[ e~ The Mary Olson Farm consists of a small house, chicken coup, weaving shed, barn, outhouse and various pastures and landscaped areas. The farm is currently under renovation to be restored to its original small family farm condition dating from the end of the nineteenth century. The property is owned by the City of Auburn, and currently used for educational purposes. 51. Describe how the adjacent properties are currently used. h[ e~ Green River Road abuts the west margin of the site, and the Green River is west of Green River Road. The parcels between Green River Road and the Green River are owned by King County and are open space. A single residential house is an parcel 3222059118, which is adjacent to parcel 3222059032 the farmstead. There is also residential house on parcel 2161550060 and 2161550070, and a golf course on parcel 0521059011, which is all adjacent to parcel 0521059006. All other adjacent properties are vacant. JARPA 2009 Page 3 of 12 5m. Describe the structures (above and below ground) on the property, including their purpose(s). n[_.e~ The Mary Olson Farm contains several structures used for educational purposes including a caretaker trailer, a small house, chicken coup, weaving shed, barn, and an outhouse. The farm is currently under renovation to restore the farm to its original small family farm condition dating from the end of the nineteenth century. There is no structure in the proposed parking lot area and existing trail area. 5n. Provide driving directions from the closest highway to the project location, and attach a map. h( e~ From State Route 167, take the S. 277th Street exit. Go east on S. 277th Street. Turn right (south) onto Green River Road. End just before address 28728 Green River Road. Part~6-Project Description 6a. Summarize the overall project. You can provide more detail in 6d. h[ elp~ The project will expand the use of Mary Olson Farm with an improved trail and a new parking lot and provide water enjoyment and views of the Green River. The project consists of the construction of small parking lot (30 cars and two buses) for visitors to the Mary Olson Farm. The 60 acre farmstead (Parcels No. 322205-9113, - 9031, -9032 and 0521059006) is an early homestead on the Green River and has been designated as a King County Landmark and National Register property. It is an example of a small family farm dating from the end of the nineteenth century. The purpose of the project is to provide off-street parking for visitors arriving in passenger vehicles as well as bus parking to accommodate school buses bringing students to the site. The project will also include a vault toilet (two person capacity) for use by the visitors. The parking area will be connected to the farmstead by an improved pedestrian only trail (approx. 600 feet) following the route of the original wagon road serving the site. 6b. Indicate the project category. (check a~i tnat apply.) n~ei ❑ Commercial ❑ Residential ~ Institutional ❑ Transportation ❑ Recreational ❑ Maintenance ❑ Environmental Enhancement 6c. Indicate the major elements of your project. (check au that app~y.) h[ eip] ❑ Aquaculture ❑ Culvert ❑ Float ❑ Road ❑ Bank Stabilization ❑ Dam /Weir ❑ Geotechnical Survey ❑ Scientific Measurement ❑ Boat House ❑ Dike /Levee /Jetty ~ Land Clearing Device ❑ Boat Launch ❑ Ditch ❑ Marina /Moorage ❑ Stairs ❑ Boat Lift ❑ Dock /Pier ❑ Mining ~ Stormwater facility ❑ Bridge ❑ Dredging ❑ Outfall Structure ❑ Swimming Pool ❑ Bulkhead ❑ Fence ❑ Piling ❑ Utility Line ❑ Buoy ❑ Ferry Terminal ❑ Retaining Wall (upland) ❑ Channel Modification ❑ Fishway ~ Other: Parking lot area with driveways, restroom facilities, and trail improvement to the Mary Olson Farm. DARPA 2009 Page 4 of 12 fid. Describe hvw you plan to construct each project element checked in 5c. Include specific construction methods and equipment tv be used. h~ • Identify where each element will occur in relation to the nearest waterbody. • Indicate which activities are within the X00-year flood plain. Land clearing. The project will clear less than 1-acre of land for construction of the parking lot and the associated restroom facility and storm drainage facility. All construction work will occur on-site, which is located on the east side of Green River Road across from the Green River. Land clearing will be done with typical construction equipment and methods. No activities will occur within the ~ DD-year flood plain. Two driveways ~2,20o sq. ft. total} will be constructed within the ~ DD-foot shoreline buffer where stream buffer mitigation ~4,5DD sq. ft.}will be provided to mitigate for the stream buffer impacts. . . Ge. What are the start and end dates for project construction? ~manthlyear~ hel • if the project will be constructed in phases or s#ages, use ,DARPA Attachment D to list the start and end dates of each phase or stage. Start date: _ End date: _ ®See JARPAAttachment D fif. Describe the purpose of the work and why you want or need to perform it. hLe~l The 60 acre Mary Olson Farmstead Parcels No. 322245-9~ 13, -943, -9032 and D52~ D59oD6} is an early homestead on the Green River and has been designated as a King County Landmark and National Register property. It is an example of a small family farm dating from the end of the nineteenth century. The purpose of the project is to provide off-street parking for visitors to the Mary Olson Farmstead arriving in passenger vehicles as well as bus parking to accommodate school buses bringing students to the site. The project will also include a vault toilet for use by the visitors and an improved pedestrian trail. 6g. Fair market value of the project, including materials, labor, machine rentals, etc. hLe~l Approximately $354,404. 6h. Will any portion of the project receive federal funding? h~ • If yes, list each agency providing funds. ❑ Yes ®No ❑ Don't know Part l-wetlands: Impacts and Mitigation ®Check here if there are wetlands or wetland buffers on or adjacent to the project area. elf there are Wane, skip to Part 8.} la. Describe how the project has been designed to avoid and minimize adverse impacts to wetlands. h~ ❑ Not applicable DARPA 2009 Page 5 of 12 A wetland delineation was conducted for the project parcel and no wetlands were found to be present. However, Auburn's critical areas maps indicate that wetlands may be present on the west side of the Green River Rd. ft is possible that these wetland buffers may extend across the road onto the project parcel. The project was designed to minimize intrusion into the stream buffer and thereby minimizing impact an any present wetland buffers as well. In addition, stream buffer enhancements would also be wetland buffer enhancements. lb. Will the project impact wetlands? h~ ❑ Yes ®No ❑ Don't know ?c. Will the project impact wetland buffers? hel ❑ Yes ❑ No ®Don't know see 7a} ld. Has a wetland delineation report been prepared? hf.~ • If yes, submit the report, including data sheets, with the DARPA package. ❑ Yes ®No ~However,.no wetland delineation,wasdnne for the property west of the Green River Rd.} le. Have the wetlands been rated using the Western Washington or Eastern Washington Wetland Rating System? h~ • If yes, submit the wetland rating forms and figures with the DARPA package, ❑ Yes ®No NIA} ❑ Don't know lf. Have you prepared a mitigation plan to compensate for any adverse impacts to wetlands? h~ • If yes, submit the plan with the DARPA package. ® Yes ❑ No ❑ Not applicable lg. Use the table below to list the type and rating of each wetland that will be impacted; the extent and duration of the impact; and the type and amount of compensatory mitigation proposed. If you are submitting a compensatory mitigation plan with a similar table, you may simply state below} where we can find this information in the mitigation plan, hel Activity causing wetland type Impact area Duration Proposed Vlretland impact fill, and rating esq. ft. or acres} of impactz mitigation mitigation area drain, excavate, category type3 ~sq, ft. or acres} flood, etc.y Clearing and NIA see 7a} Less than 1,o~oa Clearing Enhancement 4,5DD sq. ft. filling sq~. ft. of wetland and filling stream buffer impact. will occur bufferlpotentially Across Green for about 2 wetland buffer} River Road from months. the river; within Site will the buffer. then be Uutside of 1a0- permanent) yearfloodplain. y stabilized. ~ Ecology wetland category based on current Western Washington or Eastern Washington Wetland Rating System. Provide the wetland rating forms with the DARPA package. Z Indicate the time din months or years, as appropriate} the wetland will be measurably impacted by the activity. Enter "permanent" if applicable. s Creation ~C}, Re-establishmentlRehabilitation ~R}, Enhancement ~E}, Preservation ~P}, Mitigation Banklln-lieu fee ~B} Page numbers}for similar information in the mitigation plan, if available: ,DARPA 2009 Page 6 of 12 7h. For all filling activities identified in 7g., describe the source and nature of the fill material, the amount in cubic ards that will be used, and how and where it will be laced into the wetland. n[ eIp] N/A (No activities will be in the wetland) 7i. For all excavating activities identified in 7g., describe the excavation method, type and amount of material in cubic yards you will remove, and where the material will be disposed. of elpl N/A (No activities will be in the wetland) 7j. Summarize what the compensatory mitigation plan is meant to accomplish, and describe how a watershed approach was used to design the plan. hf elgl The project was designed to impact the Green River buffer and any associated wetlands as little as possible. The entire parking lot will be outside any buffers. Access driveways are the only feature to be constructed in the buffer(s). Impacts will also be minimized by using grasscrete surfacing on some parking stalls. The mitigation plan will install 4,500 sq. ft. of native trees and shrubs in the Green River Buffer. The enhanced buffer will provide water quality benefits, helping to buffer the river from the parking lot. In addition, habitat will be provided for wildlife (e.g. birds). For full details of the mitigation, please see the attached stream buffer mitigation plan. Part 8-Waterbodies (other than wetlands): Impacts and Mitigation In Part 8, "waterbodies" refers to non-wetland waterbodies. (See Part 7 for information related to wetlands.) n[ ei ~ ~ Check here if there are waterbodies on or adjacent to the project area. (If there are none, skip to Part 9.) 8a. Describe how the project is designed to avoid and minimize adverse impacts to the aquatic environment. hC~l ❑ Not applicable The proposed parking lot is not anticipated to have an adverse impact to the aquatic environment of the Green River. The project is located across Green River Road from the Green River. The project incorporates some low impact development techniques. For instance, the parking stalls will be grasscrete surfacing. Replacing typical asphalt surfaced parking stalls with grasscrete surfacing will reduce the project's impervious surfaces and the resulting storm water runoff from the parking lot. 8b. Will your project impact a waterbody or the area around a waterbody? hf eipl ~ Yes ❑ No -Impacts to the Green River buffer (area around a waterbody). 8c. Summarize impact(s) to each waterbody in the table below. h[ e~~ Activity Waterbody Impact Duration of Amount of Area (sq. ft. causing name location' impactZ material to be or linear ft.) impact placed in or of waterbody (clear, removed from directly dredge, fill, waterbody affected pile drive, etc. Clearing and Green River Across Green Clearing will None (buffer None (buffer filling River Road from occur for about 2 impacts only). impacts only). the river; within months. Site will DARPA 2009 Page 7 of 12 the buffer. then be Outside of 100 permanently earflood lain. stabilized. Indicate whether the impact will occur in or adjacent to the waterbody, If adjacent, provide the distance between the impact and the waterbody and indicate whether the impact will occur within the 100-year flood plain. ~ indicate the time din months or years, as appropriate} the waterbody will be measurably impacted by the work. Enter "permanent" if a licable. 8d. Have you prepared a mitigation plan to compensate for the project's adverse impacts to non-wetland waterbodies? h(.~ ~ If yes, submit the plan with the DARPA package, ® Yes ❑ No ❑ Not applicable 8e. Summarize what the compensatory mitigation plan is meant to accomplish. Describe how a watershed approach was used to design the plan. ~ If you already completed lj., you da not need to restate your answer here. hel , See lj. 8f. For all activities identified in Sc., describe the source and nature of the fill material, amount din cubic yards} you will use, and how and where it will be placed into the waterbody. hel N1A $g. For all excavating or dredging activities identified in 8c., describe the method for excavating or dredging, type and amount of material you will remove, and where the material will be disposed. h(.~ N1A Part 9-Additional Information Any additional information you can provide helps the reviewers} understand your project. 9a. If you have already worked with any government agencies on this project, list them below. h~ Agency Name Contact Name Phone Most Recent Date of Contact ~ ~ ~ 7 ~ } JARPA 2009 Page 8 of 12 9b. Are any ofthe wetlands orwaterbodies identified in Part 7 or Part 8 on the Washington Department of Ecology's 3o3~d} List? hLe~l • If yes, list the parameters} below, • If you don't know, use Washington Department of Ecology's Water Quality Assessment tools at: httpJlwww.ecy.wa.govlprogramslwg13D3d1. ® Yes ❑ No Green River: Temperature 9c. What U.S. Geological Survey Hydrological Unit Code CHUG} is the project in? h~ elf • Go to httpalcfpub.epa,govlsurfllocatelir~dex.c~m_ to help identify the HUC. . 11110813 9d. What Water Resource Inventory Area Number wIIRIA is the project in? h~ • Go to httpalwww.ecy.wa.~ovlserv~gislmapslwrialwria.htm to find the WRIA WRIA 9 9e. Will the in~water construction work comply with the State of Washington water quality standards for turbidity? h~l • Go to http:llwww,ec,~Qovlprogramslwglswgslcriteria.html far the standards. ❑ Yes ❑ No ®Not applicable 9f. If the project iswithin the jurisdiction of the Shoreline Management Act, what is the local shoreline environment designation? hLe~l • If you don't know, contact the local planning department. • For mare information, go to: htt~:Ilwww.ecy.wa.govlprogramslsealsmallaws rulesl1l3-26121 ~_desianations.html. ❑ Rural ❑ Urban ❑ Natural ❑ Aquatic ❑ Conservancy ®Other Urban Conservancy 9g. What is the Washington Department of Natura! Resources Water Type? hel • Go to htt alwww.dnr.wa. ovlBusinessPermitsfTo icslForestPracticesA IicationslPa eslf watert in .as x for the Forest Practices Water Typing System. ®S Green River} ®F Olson Creek} ❑ Np ❑ Ns 9h. Will this project be designed to meet the Washington Department of Ecology's most current stormwater manual? h~ • if no, provide the name of the manual your project is designed to meet. ❑ Yes ®No Name of manual: City of Tacoma stormwater Management Manual 9i. If you know what the property was used for in the past, describe below. h~ Agriculture 9j. Has a cultural resource archaeological} survey been performed on the project area? h~ • If yes, attach it to your JARPA package. DARPA 2009 Page 9 of 12 ®Yes ❑ No A cultural resources survey was performed only for parcel the farm is on. A copy of the survey was provided in the SEPA submittal packet. 9k. Name each species listed under the federal Endangered Species Act that occurs in the vicinity of the project area or might be affected by the proposed work. h~ Bald eagle. Chinook salmon, currently listed as a threatened species under the Endangered Species Act, coho salmon, currently a candidate species, and bull trout, currently listed as a threatened species, are present in the Green River. 91. Name each species or habitat on the 1111ashington Department of Fish and VlJildlife's Priority Habitats and Species List that might be affected by the proposed work. h[~ Bald eagles, Chinook, pink salmon, chum salmon, coho, rainbow trout, sockeye salmon, steelhead, cutthroat trout, bull troutldolly varden. . DARPA 2009 Paae 1 0 of 12 Part 10-Identify the Permits You Are Applying For Use the resources and checklist below to identify the permits you are applying for. • Online Project Questionnaire at http://apps.ecy.wa.gov/opas/. • Governor's Office of Regulatory Assistance at (800) 917-0043 or help _ora.wa.gov. 10a. Compliance with the State Environmental Policy Act (SEPA). (check ate that apply.) h~ • For more information about SEPA, go to www.ecy.wa.gov/programs/sea/seoa/e-review.html. ❑ A copy of the SEPA determination or letter of exemption is included with this application. ~ A SEPA determination is pending with City of Auburn (lead agency). The expected decision date is March 2010. ❑ I am applying for a Fish Habitat Enhancement Exemption. (check the box be~ow in yob.) • Submit the Fish Habitat Enhancement Project form with this application. The form can be found at: http://www.epermitting.wa.gov/site/alias resourcenterfjarpaJarpa form/9984/jarpa_form.aspx. ❑ This project is exempt (choose type of exemption below). ❑ Categorical Exemption. Under what section of the SEPA administrative code (WAC) is it exempt? ❑ Other: ❑ SEPA is pre-empted by federal law. hf elp~ 10b. Indicate the permits you are applying for. (Check a~~ that apply.) hf elpl LOCAL GOVERNMENT Local Government Shoreline permits: ~ Substantial Development ❑ Conditional Use ❑ Variance ❑ Shoreline Exemption Type (explain): Other city/county permits: ❑ Floodplain Development Permit ❑ Critical Areas Ordinance STATE OVERNMENT Washington Department of Fish and Wildlife: ❑ Hydraulic Project Approval (HPA) ❑ Fish Habitat Enhancement Exemption Washington Department of Ecology: ❑ Section 401 Water Quality Certification Washington Department of Natural Resources: ❑ Aquatic Resources Use Authorization FEDERAL GOVERNMENT United States Department of the Army permits (U.S. Army Corps of Engineers): ❑ Section 404 (discharges into waters of the U.S.) ❑ Section 10 (work in navigable waters) United States Coast Guard permits: ❑ General Bridge Act Permit ❑ Private Aids to Navigation (for non-bridge projects) JARPA 2009 Page 11 of 12 Part 11-~Authorizing Signatures . Signatures required before submitting the JARPA package. ~~a. Applicant Signature required} h~l I certify that to the best of my knowledge and belief, the information provided in this application is true, complete, and accurate. I also certify that I have the authority to carry out the proposed activities, and I agree to start work only after I have received all necessary permits. hereby authorize the agent named in Part 3 of this application to act on my behalf in matters related to this application. initial} By initialing here, I state that I have the authority to grant access to the property. I also give my consent to the permitting agencies entering the property where the project is located to inspect the project site or any work related to the project. ~ initial} Applicant Date ~ ~ b. Authorized Agent Signature hel 1 certify that to the best of my knowledge and belief, the information provided in this application is true, complete, and accurate. I also certify that I have the authority to carry out the proposed activities and I agree to start work only after all necessary permits have been issued. Authorized Agent Date ~ ~ c. Property owner Signature cif not applicant} h~ eft I consent to the permitting agencies entering the property where the praject is located to inspect the project site or any work. These inspections shall occur at reasonable times and, if practical, with prior notice to the landowner. Property Owner Date 18 U.S.C §1041 provides that: vllhoever, in any manner within the jurisdiction of any department or agency of the United States knowingly falsifies, conceals, or covers up by any trick, scheme, or device a material fact or makes any false, fictitious, or fraudulent statements ar representations ormakes oruses any false writing or document knowing same to contain any false, fictitious, or fraudulent statement or entry, shall be fined not more than $1 Q,~OO or imprisoned not more than 5 years or both. If you require this document in another format, contact The Governor's Office of Regulatory Assistance FORA}, People with hearing loss can call l11 for Uvashington Relay Service. People with a speech disability can call ~81T} 833-6341. LIRA ni~hlir:a~inn n~imhPr• FNV-(IAA-(]A JARPA 2009 Page 12 of 12 ~~~STApp~ i o i -_r~ AGENCYUSEONLY ~ a ~ ~ ~ ~ ~ E ~ A $ ~ I 4} ' ~ ~"y teas ~°y US Army ~arpS ~ ~ ~ASHINGT~N STATE s~~ enn~~~rp~ ;Date received: Joint A uatic Resources Permit Application ~JARPA~ Form hel ;Agency reference JARPA Attachment B: Tax Parcel #~s}. ~ r For additional ro'ect locations hL.~] p J ~___________________________..w________~ Use this attachment o~C if you have more than one project TO BE COMPLETED BY APPLICANT h[ elp] location. Use a separate form for each additional location. UPI#: 43b085-o9-01 Project Name: Mary Qlson Farm Expansion Parking Lot and Tray l Improvements Use black or blue ink to enter answers in white s aces below ar fill in electronical! b clickin on fells. 5a. Street AddreSS Cannot be a PO Box. If there is no address, please provide other location information in 5n.} hel No address assigned 5b. City, State, Zlp ~If the project is not in a city ortown, please provide the name of the nearest city or town,} h~ elf] Auburn, WA 98031 5c. County hG.e~ King 5d. Please provide the section, township, and range for the project location. hel '/4 Section Section Township Range SW 32 22 0 5 5e. Please provide the latitude and longitude of the project location. hL~l • Example: 4?.03922 N lat. I -122.89142 IN long North Latitude 47°20'5l" ;West Longitude 122°12'19" 5f. List the tax parcel number for the project location. hL~l • The local county assessor's office can provide this information. 3222059031 5g. Identify the type of ownership of the property. Check a[I that apply.} hL~l ❑ State awned Aquatic Land ❑ Tribal ❑ Private ® Cther publicly owned federal, state, county, city, special districts like schools, ports, etc.} JARPA 209 Attachment B: Additional project locations see JARPA Part 5~ Page 1 of 2 5h. Contact information for all adjoining property owners, lessees, etc, ~1f more space is needed, please use DARPA Attachment C . h~ Name Mailing Address Tax Parcel # ~i€ known See main application page 3. ~ 5i. Is any part of the project area within a ~o~-yearflood plain? he[~al ❑ Yes ®No ❑ Don't know 5j. Briefly describe the vegetation and habitat conditions on the ro ert . h~ p p Y This property is primarily forested with deciduous and evergreen trees and shrubs. Some pastures are also found on the parcel. Habitat conditions are good for birds and wildlife. 5k. Describe how the property is currently being used. hel The property is currently vacant. If you require this document in another format, contact The Governor's Office of Regulatory Assistance ~4RA}, People with hearing loss can call 711 for V1lashington Relay Service. People with a speech disability can call ~8?7} 833-6341. QRA publication number: ENV-421-D9 DARPA 2049 Attachment B: Additions! nroiect locations fsee .DARPA Part 51 Pang 7 of 7 -j - - - - - - - - - - - - - - " - -1 . - -j - - -I - ~~~~SZarAO~ ~ - - ^ . - - - - T AGENCY USE ONLY x I~ ~I I ~ I I X009 ~ae9 °y US Army Carps ; ~ ~ASHINGT~N STATE ens~c~~pr ;Date received: Joint A uatic Resources Permit q I ' i Application ~JARPA~ Form hel I I Agency reference ; ARPA Attachment B: J Tax Parcel #(s}. For additional ro'ect location s hLel~...l p J 'w________....______________.._______..___. Use this attachment only if you have more than one project TO BE COMPLETED BY APPLICANT he[~I location. Use a separate form for each additional location. UPI#: 43b085-o9-01. Project Name: Mary alson Farm ' expansion Parking Lot and Teti Improvements Use black or blue ink to enter answers in white s aces below or fll in electronicall b clickin on fields, 5a. Street Address Cannot be a PO Box. If #here is no address, please provide other location information in 5n.} h[ elf] No address assigned 5b. City, State, Zip ~If the project is not in a city or town, please provide the name of the nearest city or town.} h[ elf Auburn, WA 98031 5c. County hLe~l King 5d. Please provide the section, township, and range for the project location. hC~l' Section Section Township Range SW 32 22 05 5e. Please provide the latitude and longitude of the project location, hel • Example: 47.03922 N lat. l -122.89142 Uv long North Latitude 47°20'50" ;West Longitude 122°12'25" 5f. List the tax parcel number for the project location. hL~l • The local county assessor's office can provide this information. 3222059113 5g. Identify the type of ownership of the property. (Check all thatapply.~ hL~l ❑ State awned Aquatic Land ❑ Tribal ❑ Private ® Other publicly owned federal, state, county, city, special districts like schools, ports, etc.} DARPA 20D9 Attachment B: Additional project locations (see DARPA Part 5} Page 1 of 2 5h. Contact information for all adjoining property owners, lessees, etc. ~If more space is needed, please use DARPA Attachment C . hel Name Mailing Address Tax Parcel # cif known See main application, page 3. 5i. !s any part of the project area within a 1 oo-year flood plain? h~ ❑ Yes ®No ❑ Don't know 5j. Briefly describe the vegetation and habitat conditions on the property. hLe~l This property is fallow pasture, with native and nonnative grasses and other upland invasive vegetation species, such as blackberries, making up the majority of the plant community. Habitat conditions are very poor, with little cover for animals and little foraging value in the grass cover. 5k. Describe how the property is currently being used. h[ e~ The property is currentiy vacant. If you require this document in another format, contact The Governor's Gffice of Regulatory Assistance ~4RA}, People with hearing loss can call 711 for Uvashington Relay Service. People with a speech disability can call X817} 833-6341. oRA publication number; ENV-421-09 DARPA 2009 Attachment B: Additional project locations flee DARPA Part 5) Paae 2 of 2 v .__..~....-_..~.._--.,~W__-.---_-..__....- I 4~~66Th7~o~ ~ AGENCY USE ONLY ~1 I~ ~ ' 209 z ~ b~ iel+ ~`°4 US Army Carps ~ . ~ 1NASHINGT~N STATE ~~~~~,'~8~~~ ;Date received: . ~ i Joint A uat~c Resources Permit q , A lication ~JARPA~ Form hL.~l pp ~ E Agency reference hment B: ARPA Attac J ,Tax Parcel #~s}. For additional ro'ect ~ocat~on s h[~l ~ J Use this attachment onl if ou have more than one project To BE coNrnLE~D BY ~PLicArrT h~ -.J! Y location. Use a separate form for each additional location. uP~#: 43~oss-o9-o~ Project Name: Mary Ulson Farm 'Expansion Parking Lot and Trail improvements Use black or blue ink to enter answers in white s aces below or fiill in electronicall b clickin on fields. 5a. Street Address Cannot be a PD Box. If there is no address, please provide other iocation information in 5n.} hel No address assigned 5b. City, State, Zip cif the project is not in a city or fawn, please provide the name of the nearest city or town.} hel Auburn, WA 9803 5c. County het King 5d. Please provide the section, township, and range for the project location. hC~ 1/~ Section Section Township ~ Range NW 05 21 05 5e. Please provide the la#itude and longitude of the project location. hel • Example: 47.03922 Nfat. l -122.89142 VII long North Latitude 47°20'31" l West Longitude 122°12'14" 5f. List the tax parcel number for the project location. hel • The local county assessor's office can provide this information. o521a59ao6 5g. Identify the #ype of ownership of the property. Check all thatapply.) hel ❑ State Owned Aquatic Land ❑ Tribal ❑ Private ® Other publicly owned federal, state, county, city, special districts like schools, ports, etc. JARPA 2ag9 Attachment B; Additional project locations see JARPA Part 5} Page 1 of 2 5h. Contact information for all adjoining property owners, lessees, etc. ~If more space is needed, please use JARPA Attachment C}. h~ Name Mailing Address Tax Parcel # fit known See main application page 3. 5r. is any part of the project area within a 1 o0-year flood plain? ne[~]I ❑ Yes ®No ❑ Don't know 5j. Briefly describe the vegetation and habitat conditions on the property. h[ elf This property is primarily forested with deciduous and evergreen trees and shrubs. Some pastures are also found on the parcel. Habitat conditions are good for birds and wildlife. 5k. Describe how the property is currently being used. he[~l The property is currently vacant. If you require this document in another format, contact The Governor's office of Regulatory Assistance FORA}. People with hearing fuss can calf 711 for Washington Relay Service. People with a speech disability can call X877} 833-6349 . 4RA publication number: ENV_429-09 JARPA 2D09 Attachment g~ Ac~r~itinna~ nrniprt inratir~n~ f~~?~ JARPA Part ~1 p~no ~ ~f ~ -J- " ' - - - " - - - - - -1 a i6l tj %W A- a 'L. I ~ag6rArP°~ ~ ~ ~ AGENCY USE ONLY ~x ~ X009 . 1ed4 r°y~} US Army Corps i ~ of Engineers =p ~ ' WAS H I N G TG N STATE s~~~iQ pis~rlct ~ ' ;Date received: Joint A uatic Resources Permit ~ i f ~ A lication JARPA Form hel pp ~ ~ ~ r i i ;Agency reference hment a~ J A R P A Atta c : Tax Parcel #(s}: Construction Se uence hel ' q ~ ~ TO BE COMPLETED BY APPLICANT hel Use this attachment on~l r if your project will be constructed in UpI 436gs5-q~-o~ phases or stages. Complete the outline showing the construction se uence and timing of activities, including the Project Name; Mary Qlson Farm Expansion q start and end dates of each hose or sta e. Parking Lot and T~A~I Improvements p 9 Use black or blue ink to enter answers in white spaces below or fill in electronically by clicking on fields. Phase or Start Date End Date Activity Description Stage 1 May 2010 July 2010 Land clearing, filling, storm water facilities ~bioretention} installation, grasscrete surface parking stalls, asphalt access, driveways, concrete pad, gravel and mulch trail, and mitigation landscaping. 2 Summer 2012 Summer 2012 impervious surface installation and final landscaping. 3 Summer 2013 Summer 2013 Vault toilet installation on existing concrete pad. !f you require this document in another format, contact The Governor's Office of Regulatory Assistance (4RA}. People with hearing loss can call l11 for Vllashington Relay Service. People with a speech disability can call (8ll} 833-6341. BRA publication number: ENV-Q23-09 JARPA 2009 Attachment D: Construction sequence see JARPA question 5e} Page 1 of 1 N R SE 274t ST ~ a w y ~ ~ ~ ~ ~ b ~ ~ ° ~ ~ ~ ~ ~ ° ° SE 2761 ST " r ` w . SE 280th ST SE 2 81 s~ ST ~ ~ SE ~ 282n ST ° ~ ~ " ~ w ~ ~ ~ rn ST ° SE 284th Pro osed Parking Lod " ~ " ~ MARY ~ ~ . , ~ SE 286th ST O~SO w . .FARM S 287th ~ ~ PARK ~ SE 288th ST SE 290th ST s~ ~stsr sr W N ~dHP ~ ~ w ~ SE 293RD ST ~ w A URURN a CO~~' ~ 6 COURSE sF~g ~ 8rti ~ w ~s.~ ~ ~~9~ w ~ PA K s~ 3oo1H sr ~ 4 ~ N Si: 3015E ST SE ~'~PL S ~ 1(V 1 ~ y d ~ 5E 302ND ST ~ SE 32ND ST 30 ~ ~ a w ~ 303RD ~ w ~ ~ CT SE ~ ~ w r-1 4 rl ~ ~ ~ SE 304th TH Pl, y ~ ~ ISAA o ST AV ~ }4 ~ ~ E 305TH ST ' ~ EVANS ° ~ ~ s£ 305TH a W PARK SE 3 ST ~ ~ ~ r ~ SE 307TH PL o tiAY p~ ~ m ,'~,'~h~ n... ~ SE 307TH P ~ CITY 4F AUBURN . Figure ~ CITY 0~ . CPO715, MARY OLSON FARM ry"a: WASHINGTON PARKING LoT IMPROVEMENT PROJECT VI c~ n qty Map r SCALE: ~~~=114 MILE Exhibit 11 Wetland Investigation and Site Review r . _ X309 Shilshole Avenue NW wr.adaf~san.c~m ~ ~ ~ Suite X00 ~ Sea##1e, WA 9810 ~a~.789.9658 ph~n~ f.~`.~~ duly 1 } Patricia Cosgrove l~Iuseun~ and l~`arm Director City of Auburn 91 ~ Il Street SE Auburn wA X8002 Subect~ Marv Olson Farm Wetland Investigation and Site Review Dear Patricia: ~ ~ . ESA Adalfson ~Adolfson} is pleased to present our findings from a wetland investigation conducted on the Mary Olson Farm tfan~.} located at 28728 Green River Rd NE, Auburn Washington Figure l; Section 32, Township 22 North, Range S East}. The City of Avburn is working with King County to acquire a 9µacre parcel of land located east of Green River Road and north of the existing Olson Farm for use as event parking far farm activities. At your request, we conducted a wetland investigation for the presencelabsence of wetlands on the parcel. ESA. Adolfson also completed a wetland reconnaissance of a proposed pedestrian trail connection between the Parking Area and the existing farm, which generally follows an abandoned road, Methods The wetland deternlination was performed using methods prescribed iv the Wati~r~rr'n~ta~t State 1<V~tla~xds Ider~tzf zcatic~~r aMd .~eli~cu~ion ~ar~~ra~, ~IarcJx ~ 997. National wetland Inventory maps, US Geological Survey sail maps, and color aerial photos were used to gain an initial understanding of the site and locate possible wetlands. Vegetation, hydrology, and soil observations were made as the site was traversed by foot. Site Conditions .Adalfson biologists Ilon Logan and Scott ~ln~sted conducted a site visit on June 1 S, 2008. The 9~acre parcel is bounded by Green River Road to the west, undeveloped land vegetated with grass and shrubs to the north, and undeveloped forested land to the east and south. The parcel is relatively flat, containing microtopographic depressions and a shallow north-south depression near the Centex. The southern portion of the parcel, where a 20-stall Parking Area is proposed, is dominated by Himalayan blackberry ~.Rrcbtrs arrrte~tiacus}and reed canarygrass ~Pl~a~ar•is arandirracec~}with some bracken fern ~~'terdiurn c7quifalialrr~}also present. Soil investigations found bright chroma sails ~ l 0YR 413} that were dry and friable at the time of investigation. No indicators of wetland hydrology were observed in this area. Based on the lack of wetland hydrology, hydric soil indicators or hydrophytic plant species, we concluded that tl~e proposed parking area is upland. No~•th of the proposed Parking Area and within the remainder of the 9-acre site, vegetation is dominated by various upland grasses and scattered shrubs. Domina~~t species in the center of the site include orc ~Dact~~is ~~arrrcJrafa}, sweet vernalgrass ~~r~tlxvxan~hrrm ndn~ at~srn}, and tall fescue (.~estuca a Scattered fruit trees are located in this area, as are Canada thistle ~~ir,~ium c~ruens~}, bull thistle ~~i~siunr ~~V~ ti Patricia Casgxn~~e I Q~scm Pain Jul~r 16, 208 Pale ~ vlrlgar•e}, and Scot's broom {C}~tr',st~s ,seo,~r~rr.t~s}, Soils are dark grayish brawn ~1 OYR 4f~} and do not contain redoximorphic features, No indicators of wetland hydrology were observed, Based an tl~e lack of wetland hydrology, hydric soil indicators and upland plant species, the remainder ofthe site appears to be upland. A narrow ditch approximately 1 foot wide and feet deep} overgrown by Himalayan blackberry is present along Green River Road. loo crater was present in tl~e ditch and sails were not saturated, In addition, a largely unvegetated roadbed is present at the northeastern portion of the site. Upland vegetation is located adjacent to the roadbed. This area appears to experience seasonal ponding; laowever, due to a lack of hydrophytic plant species and hydric sails the area was not delineated as wetland. D~~~si~~ East of the site, awest-facing forested slope is present which is dominated by big leaf maple (Ac~~r jrra~raphyl~r~rrz~ and Douglas fir ~P.S~c~t~dc~t.~trg~ rrierz~~es~~} with a understory dominated by Indian plum ~Uemleria c.~ef•asif~rm~s}, comxnan snowberry ~Syrfr~~~tvri~~ai~aos ulbus}, and thimbleberry ~Rzcbus~arvi~or•a~s}. ~i~nalayan blackben• is present along tl~e majority of the eastern site boundary, adjacent to tl~e forested slope, Soils at the toe of slaps were dry, very dark grayish brown ~ 1 oYR 3I2} and did not contain redoximorphic features. Thus, na off site wetland conditions exist i~~nmediately east of the site, l~agon Road The existing "wagon road" between the faun and the proposed Parking Area is generally G to S feet wide and trends southeast to northwest through the mature mixed deciduous and coniferous forest. The surface is compacted sail and gravel from a historical road now overgrown by grasses and weeds. The road rises steeply out of the farm site over a ridge and down awest-facing slope to the proposed Parking Area, Vegetation an the road includes: orchardgrass, stinging nettle ~ Urtica dr'ocia}, creeping buttercup ~Ra~3ufxc°t~~tcs r~c~pet7,~} and other fortis. No hydric soil ar wetland hydrology indicators were observed along the wagon road and we concluded the area to be upland. Thank you for the opportunity to provide this review, if you have any questions, please contact nee at ~2a6~ 7S9-9b5S. sincerely, Scott ~lrnsted Associate Biologist ~i~~ ~o~ King CaL~nty << ~ € ,~k ~r~ , r Seattle J h ~ E~ ;Auburn ~ , Project Site y 'Tacoma i , ~ ~ `'..N 3 ~ ) ~ ~ Ly ~ A~~wnnn~uMnn~~ i ~ ~ ~..,.'1 E ~ r , ~1 p ` ` ra s~ ~ 1 111 ~ ~ Q ~L ~ k rF ~ Wetland s ; ~ , , ~ Reconnaissance Area = Q , ~ J ` I~r~ ~ ! ~ i~V iS7 W N a ~ ~ Y ~ ~ ~ . .t ~ ~ F 'G t ~ ~ "~aar U_ -cs , , 3 ~ ~1 1 4 ~ ~O C3 ~ ~ , E, ~ , Y.. W Approximate Wagon ; ` ~ Raad Alignment ~ ~q0 ;r ~ ~ ~ ~t~~ 0 ~1~~~ n ~ ~ f ~ ~ ~ ~ ~~~~h ti~~; Legend ~ s Olson Farm ~ w~4 ~ € ; Streams ~iGng County) ~ z z N ` ~r' : ~ 100' Contours ~ Approximate Wagon Road c~ a Wetland Reconnaissance Area ~ Parrei (Grey Lines) Feet 1 ~ j r ~ ~ Auburn Olson Farm. 208375 SOURCE: City of Auburn, 2003, King County, 2DD7I 2008 ~2DD2 -Air Photo); NRCS, 2003; USFWS, 2DDl FIgUI"L' Vicinity and Study Area Exhibit 12 Geotechnical Engineering Study ,tea ~ ~ .~v ~ ~ 13256 Northeast 2Qth Street, Suite 16 ~ ~a ~ 1 Bellevue VVaslun~tan X8005 ~ ~ NS~JLT Al'~'T 5, INS . X425) 747-5518 FAX X425} 747-8561 ~ ~ ~ July zoo9 . JN o9~35~ BaLA Architecture + Planning ~ ~ ~ ~ . ~ ~ ~ ~ ~ ~ . ~ 5911vestern Avenue West #486 ~ ~ ~ , ~ ~ . Seattle, Washington 98~ ~ 9 vla email mhamelC~bolarcl~.com Attention: Rhoda Lawrence .Subject: Transmitfial Letter Geotechnical Engineering Study ~ ~ . Proposed Dlson Farm Parking Lot and Detention Pond North of z8128 Green River Road Southeast Auburn, vhashington Dear Ms~ Lawrence; vve are pleased to present this geotechnical engineering report for the parking lot and detention pond to be constructed north of Z87z8 Green River Road Southeast in Auburn, v~lashington. The scope of our services consisted of exploring site surface and subsurfiace conditions, and then developing this report to provide recommendations for general earthwork and design criteria for the project This word was authorised by your acceptance ofi our proposal, P~~SO4, dated June ~ 6, z0o9, The attached report contains a discussion of the study and our recommendations, Please contact us if there are any questions regarding this report, or far further assistance during the design and construction phases of this project, Respectful) submitted, GED~ C NSU LTANTS, INC. D, Robert Ward, P.E. Principal cc; VV.R, Consulting lnc. John Rundall via ~acslmlle; ~annrur~a'alJ~a corncas~. net DRW: jyb GE4TECHNiCAL ENGINEERING STUDY , ~ : ~ Proposed Glson Farm Parking Lot and Detention Pond North ,ot X5728 Green River Road Southeast . ~ Auburn, Washington. This report presents the findings and recommendations of our geotechnical engineering study for ~ . the site of the proposed parking lot and detention pond to be constructed .north of ~81~28 Green River Road Southeast in Auburn, Washington. ~ . ~ ~ ~ ~ . . ~ ~ . We were provided with a partial set of plans that consisted of. 1 }Sheet '4, horizontal control and site plan, 2} Sheet 1, grading and drainage plan, and 3} Sheet 8, civil sections and details. Uv.R. Consulting Inc. developed these plans, which were not dated but were received by our office on June ~4, 2DD9, Based on these plans and communications with BOLA Architecture~+ Planning, we understand that the proposed parking facilities will consist of off-street parking for approximately 30 cars and two busses and the associated storm water control facilities. ~ The drive areas of the parking facility are proposed to be stabilized sail surface. The drive entrances adjacent to the street are to be constructed of 3-inches asphalt over 2-inches 518ths minus crushed rock over fl- inches 1-114 inch crushed rock. The parking stalls to be~ stabilized with a grassed modular concrete grid ~grasscrete}. Storm water control will be handled with abio-retention facility around the parking area. The existing grade in parking project area is at approximately elevation 53 feet. The finished grade for the parking and adjoining areas is anticipated to be between elevation 54 feet . and 55 feet: The lowest finished grade for the bio-retention facilities 'rs anticipated to be between elevation 52 feet and 53 feet, We understand that approximately 1 ~ inches of topsoil is needed in. the base of the bio-retention facilities. if the scope of the project changes from what we have described above, we should be provided with revised plans in order to determine if modifications to the recommendations and conclusions of this report are warranted. S1TF C~ND1TlGNS SURFa CF The Vicinity Map, Plate 1, illustrates the general location of the site. The irregularly-shaped site is located in the North Green River Park of Auburn, Washington along the eastern side of Green River Road Southeast, north of the historic Mary Clson Farm. The Green River flows west of the project site and Green River Road Southeast. Approximately 5DD feet of road frontage defines the project's western perimeter. The toe of a steep slope adjoins the eastern site perimeter, which varies in distance from Green River Road Southeast up to a maximum of approximately 150 feet. There is no development in the project area or adjoining areas except the Mary Dlson Farm to the south, A flat, river valley landscape characterizes the site topography as well as the adjoining areas to the north and west. A mixture of tall grass, blackberry vines, and small deciduous trees currently overgrow the project site and the area to the north. East and southeast, the adjoining slope inclines steeply for approximately 300 feet of elevation to the adjacent uplands. Medium to large deciduous trees, occasional conifers, and deciduous undergrowth primarily saver the steep slope surface. r_r=r)Tr:ru rrr)niczl 11 TAKITC lKlr% BOLA Arcnifeclure + Planning JN 09~ 35 July ~4, 2409 Page 2 SUBSURFACE ~ ~ , . ~ : ~ ~ ~ ~ . ~ The subsurface conditions were ~ explored by excavating three hand barings~ .at fihe~ ~~approxin~ate~ locations shown.on the Site Exploration Plan, Plate 2. Our exploration program was~~based on tf~ie~:.. proposed construction, anticipated subsurface conditions and those ~ ~ encountered during ~ ~ exploration, and the scope of work outlined in our proposal. . ~ , . ~ . ..The hand borings were excavated with a shovel and. hand auger on June 24, 2g09..~.A geot~chnical ~ . , . engineer from our staff excavated and logged the hand borings, and :obtained representafiive~~ , samples of the soil encountered. "Grab" samples of selected~subsurface soil were collected. The Hand Boring Logs are attached to this report ~as .Plate 3. . ~ Soy! Condr'~ions ~ ~ ~ ~ ~ . Our explorations encountered loose, sandy sift soil to the maximum explored depth of 4 . ~ - feet. The upper 3 inches of this soil had significant organic topsoil} content and was~well ~ . ~ ~ ~ . - ~ rooted from the overlying vegetation. A %~inch rod was used to probe the ground ~ benea.th . ~ . the 4-foot level, v11e found that loose soil- extended to the maximum explored depth of ~ 2 feet. The site is located in the Green River -Valley, so loose alluvial driver bofitom} soil that was revealed in our explorafiionswos as anticipated. Groundwater Condi~iarrs No groundwater seepage or indications of groundwater seepage was observed in the explorations, though the hand borings were left open for only a short time period. It should be noted that groundwater levels vary seasonally with rainfall and other factors. It appears that little to no groundwater seepage occurs in the upper ~4 feet, although we believe that winter groundwater levels cannot be far below. this level. Subsurface conditions can vary between exploration locations. The logs provide specific subsurface information only at the locations tested. The relative densities and moisture descriptions indicated on the hand boring clogs are interpretive descriptions based on the conditions observed during excavation. CGNCLUS~~NS AND RECOMMENDATIaNS ~ ~ - GENERAL TINS SECTION CONTAINS A SUMMARY OF OUR STUDY AND FINDINGS FOR THE PURPOSES OF A GENERAL 4 VERVIEW DNL Y. MORE SPECIFIC RECOMMENDATIONS .AND CONCL USIONS~ ARE CONTAINED !N THE REN1AlNDER OF TNI5 REPORT. ANY PARTY REL YING ON THIS REPORT SHOULD READ THE ENTIRE DOCUMENT, The hand borings conducted for this study encountered louse, fine-grained sandy silt alluvium} to the maximum explored depth of 4 feet. An approximate 3~inch layer of organic material and roots topsoil}was revealed atthe ground surface. Based on our discussions with John Rundall of W.R. Consulting, we understand that the design provides for a firm, yet natural~looking "dirk road" for the stabilised soil portion of the project's drivewaylparking lot. This portion of the driveway~parking lot, as well as the areas where the C-.FnTFrH MNPgl 11 TANT.q INIr. ~~1.~ ~rc{~ifactu~ 2 Pla,~r~ing JN 09~ 35 ~uEy ~4, 2009 ~ ~ Page 3 grasscrete parking ~ will be located, needs to be .stable for vehicles and: pedestrians.. ~ ~:VVe~ also understand that inches of topsoil are .needed in the base of the biv-retention ponds. ~ ~ ~ : . ~ ~ : As noted above, below ~a thin layer ~of topsoil, the soil revealed in the test holes. consists..of loose~~~. ~ ~ ~ . ~ sandy silt. ~ We understand ,that this ~so[I is the: desired .look of the stabilized :portion .of the. project.: ~ ~ : The most adequate stabilization means for this .soil in our opinion is either cement ~or.a~ .polymer;- material. However, we believe that for the cement to work, some crushed rock would have to be : ~ ~ mixed into it.: The polymer would not need any .rock, and thus may be the best .option: for .phis . project. We believe .that for ~ either case,, the upper 6 inches of the onsite .soil wouid~~~ need to ,be ~ ~ . ~ ~ ~ . ~ ~ ~ thoroughly ~mixed~~ with either. cement or polymer. ~ An exact mix of soil to polymer for potentially. ~ . ~ cementlcrushed rock~~ is not known at this time,. but we strongly believe that such ~a: mix can definitely be designed so that the soil stabilized portion of the project.site .will have long~terrn ~ . stability for the project traffic. ~ . ~ The plans indicate that about 1 to 2 feet of fill is needed over the existing ground grade in~ the . project's ~~drivewaylparking lot. Before any fill is placed, the existing subgrade ~ soils need ~.to be . ~ compacted. If in fact~6 inches of stabilized onsite soil is used outside of the~grass.crete areas at the ~ ~ ~ . , new ground surface as discussed above soil which we understand may come from the site detention pond areas}, the remaining one-half to ~ .5 feet of fill will likely have to be imported. Any ~ fill could be used provided it can be adequately compacted below this stabilized.sail portion of the . project site. However, where the grasscrete is proposed, we understand that the base fil[ beneath it needs to be permeable. Therefore, the fill that is placed beneath the grasscrete should consist of a coarse, granular soil with a silt or clay content of no more than 5 percent; the percentage of particles passing the No. 20Q sieve should be measured from that portion of soil passing the three- quarter-inch sieve. At the pavement entrancelexit, we recommend that at least ~2 inches of structural fill be used to support the pavement section that is shown on the project plans; this fill is needed, regardless of whether fill soil is needed to.raise the existing ground or not. A significant geotechnical consideration for development of this project will be the condition of the silty soils at the time of construction. Based on our observations, and the results of our laboratory tests, the moisture contents of the on-site sails are near or slightly above the optimum moisture content necessary far the required structural fill compaction afi the fiime of our explorations. Understand that these explorations were done in the summer months following a period of dry weather. These fine-grained, silty soils are sensitive to moisture, which makes them impossible to adequately compact when they have moisture contents even 2 to 3 percent above their optimum moisture content. The use of polymer and possibly the cement is also very difficult if.the moisture is too far above optimum. In-place compaction of fihe onsite soils andlor the reuse of these soils as structural fill to level the site will very likely only be successful during hot, dry weather. Aeration of each loose Lift of soil will be required to dry it before the lift is compacted. The earthwork process will be slowed dramatically if the soils are too wet. The erosion control measures needed during the site development will depend heavily on the weather conditions that are encountered. While site clearing will expose a large area of bare soil, the erosion potential on the site is relatively low due to the flat nature of the ground. We anticipate that a silt fence will be needed around the downslope sides of any cleared areas. Rocked construction access roads should be extended into the site to reduce the amount of soil or mud carried off the property by trucks and equipment. Wherever possible, these roads should follow the alignment of planned pavements, and trucks should not be allowed to drive off of the rock-covered areas. Existing catch basins in, and immediately downslope of, the planned work areas should be protected with pre-manufactured silt socks. Cut slopes and soil stockpiles should be covered with C,F(ITr:r-H r-r)•IgI II TAAIT-q II•IC'. BOLA Ar~l`rr'fec~ure Y Pfanning JN 09135 Jufy 14, 2009 ~ Page 4 . ~ ~ ~ plastic during~wet~ weather. ~.Following~ rough.: grading, it~ may be~ necessary.to: mulch.:or~,hydroseed ~ bare areasthat will not be immediately covered with. landscaping or an impervious surface. ~ . ~ ~ : Geotech Consultants, Inc. should .be allowed to. review the final development plans to verify that the ~ ~ ~ ~ recommendations' presented ~ in this report are adequately addressed in ~ the d,es,ign~:.~ S.uch.:a~ plan ~ ~ . ~ . ~ ~ ::review would be additional work beyond the currenfi scope of~ work for .this study, and ~~it may include . ~ ~ ~ ~ ~ previsions to ~ our recommendations to ~ accommodate , site,. development; and, geotechnical ~ . ~ ~ ~ ~ ~,~constraints that became more evident during the review~process.~ ~ ~ ~ ~ : ~ ~ : ~ ~ SFISMCC CnNSlDFRATlnNS . ~ , ~ ~ ~ ~ . In accordance with Table 1513.5.2 of the 2006 International Building Cade ~1BC}, the site class within 100 feet of the ground surface is best represented Soil Type E Soft Soil}. The site sails that . . are saturated at the time of a large seismic event are susceptible to seismic liquefaction: ~ ~ ~ ~ ~ Ser'smr'c.L~guefac~lon ~ ~ ~ ~ ~ ~ ~ : w . ~ The site is underlain by loose, saturated, alluvial soil consisting of silty sand; sand, and ~ . sandy silt. These sails have been demonstrated to have a moderate fio high potential~for liquefaction during a large earthquake. Current geotechnical analysis cannot accurately predict where and to what extent soil liquefaction will occur during a large earthquake. It is therefore prudent to assume that soil liquefaction could occur beneath the site. The study of liquefaction and its resulting effects is ongoing, as development in areas underlain by saturated alluvium ar hydraulic fill has only really occurred to a great extent in the last 20 to 30 years. ~ Recent observations from earthquakes occurring in the State of California and in Japan indicate the following information about structures in areas underlain by liquefiable soil: Ground surface subsidence due to liquefaction tends to occur either over a large ~ area or at concentrated points where sand boils occur. differential foundation settlement typically occurs either at the location of a sand boil or wherethe subsurface soil conditions change significantly. Catastrophic foundation settlement due to liquefaction occurs primarily as a , result of lateral spreading, particularly in waterfront areas. • Conventionally constructed commercial buildings have not been documented to exhibit a~high percentage of catastrophic foundation failures in liquefiable areas. The Pugefi Sound region is very seismically active, with hundreds of small Magnitude ~M} of less . than 3.0~ earthquakes occurring every year. Within the last approximately 100 years, at least six earthquakes having a M~6.0 have been recorded in the Puget Sound basin. 0f these, a M1.1 earthquake affected Olympia in 1949, a M6,5 earthquake occurred in Seattle area in 1965, and an Ml occurred centered near ~iympia in 2001. In 1812, a M7.4 earthquake shook north-central Washington. This is the largest earthquake that has occurred in recent history. Currently, seismologists aril geologists are studying geologic evidence that indicates. subduction zone earthquakes with magnitudes of up to 8 to 9 have occurred every 300 to 5DD years. The .fast known subduction zone quake of this magnitude possibly affected the Puget Sound region rrr-:nTr-:ru rnnIcI 11 7rAMTC inEr ~~LA Ar~,hi~ec~ure ~~Eanrrl~g JN 09135 July ~ 4, 2009 ~ Page 5 ~ ~ ~ . ~approximateay.~~340 ~years~ .ago:. ~Base:d.:on ~ the .available. information, and,. the, current~'~studies~, ~~it~~ appears ~ reasonable to~ assume that an earthquake having a magnitude.:of ~up :to~. 7:~5: could ~ occur ~ ~ . , every 50 to 100 years in the Puget Sound region, Due to the large number ~of known' and unknown ~ . ~ ~ ~ faults in the area;: it ap~pears~impossibleto accurately predict where a sizable earthquake.~will oc;cur:. . , , ~ : ~ ~ ~ However, because there, are no. buildings .~except~ far proposed pit toilet .structure?} ~on.~ahe .si e~ except for~a~ pit:toiiet, the potential for~signifi~cant damage, due, Iiquefacti0n is very:,low~ at.this ~present~.~ ~ . . site. ~ ~ ~ ~ ~ . ~ ~ . ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ . - E~CAVAT14N5AND SLGPFS ~ ~ ~ ~ . ~ . ~ ~ Excavation slopes should not exceed the limits specified in local, state, and national government safety regulations. Temporary cuts to a ,depth ~of about 4 feet may be ~attemp~ed ~vertically~ in ~ . unsaturated.soil, if there are no indications of slope instability. However,:vertical cuts ~shvuid not be ~ made near property boundaries, or existing utilities and structures. Based upon Washington Administrative Code ~~vAC} -296, Part N, the soil at the subject site would generally be classified as. . Type B. Therefore, ternporary~ cut slopes in unsaturated site soils greater than 4 feet in height should not be excavated at an inclination steeper than 1:1 ~Horizontal:Vertical}, extending .continuously between the top ~and.~the bottom of a cut. ~ [f the soils are saturated, the excavations ~ . will likely need to be slope back less sfieep than~1:~ ~H:V}, . The above~recommended temporary slope inclination is based on the conditions exposed in. our explorations, and on what has been successful at other sites with similar sail conditions. It is possible that variations in soil and groundwater conditions will require modifications ~to the inclination at which temporary slopes can stand. Temporary cuts are those that will remain unsupported for a relatively short duration to allow for the construction of foundations, retaining walls, or utilities. Temporary cut slopes should be protected with plastic sheeting during wet ~ weather. It is also important that surface water be directed away from temporary slope cuts. The cut slopes should also be backfilled or retained as soon as possible to reduce the potential for instability. Please note that sand can cave suddenly and without warning. Excavatian, foundation, and utility contractors should be made especially aware of this potential danger. These recommendations may need to be modified if the area near the potential cuts has been disturbed in the past by utility installation, or ifsettlement-sensitive utilities are located nearby. . GENERAL EARTNW4RK AND STRUCTURAL F1LL All pavement areas should be stripped of surface vegetation, topsoil, organic soil, and other deleterious mafierial. The strippedor removed materials should not be mixed with any materials to be used as structural fill, but they could be used in nonstructural areas, such as landscape beds. Structural fill is defined as any fill, including utility backfill, placed under, or close. to, a building, behind permanenfi retaining or foundation walls, or in other areas where the underlying soil needs . fio support loads. All structural fill should be placed in horizontal lifts with a moisture~cantent at, or . near, the optimum moisture content. The optimum moisture content is that moisture content that results in the greatest compacted dry density. The moisture content of fill is very important and must be closely controlled during the filling and compaction process. As discussed in the General section, the onsite soils are only suitable for reuse as structural fill if the moisture content is in the range ofoptimum. r;Fr)Tr=M4 r.r)ni.CZi,1 TAKIT.q intr. BCL~ cfirfec~ure ►°!a►~rr~ing ~ JN o9~ 35 July ~4, 2009 ~ . ~ Page 6 : ~ ~ The allowable thickness. of~:~the fill ~~lift~ wifl~ depend on the. material type selected, ~~~the compaction~~ ~ ~ ~ . ~ ~ ~ ~ ~ ~ ~ equipment ~ used;. and the number of ~ passes made to .compact the lift. ~ .The ~~~loose liftthickness ~ .ti ~ ~ ~ should not exceed ~12 inches.. ~.We recommend~~testing the fill as it is placed. . If the..fill is~ nofi ~ ~ ~ ~ ~ ~ ~ :sufficiently ~compa.cted,; it can b~e ~recornpacted~~~beforeanother ~1ift is placed.:,. ,This eliminates :the..;: ~ . ~ . . ~ ~ need to remove~~the ;fill to :achieve the ~ required ~ ~cornpaction. ~ Thee -foll,owing ~.~~table ~ presents ~ . ~ . ~'recommended. relative compactions far structural fill,: ~ ~ ~ ~ . ~ ~ , ~ . Beneath footings, slabs ~ ~ 95% or walkwa s Filled slopes and behind ~ ~ ~ ~ 90% ~ : . ~ refainin~ walls ~ ~ ~ ~ ~ ~ ~ . ~ ~ ~ ~ ~ ~ ~ ~ ~ . ~ . 95% for upper ~ 2 inches of .Beneath pavements ~ subgrade; 90% below that ~ ~ ~ ~ . ~ ~ ~ . ~ .level. ~ ~ ~ ~ ~ ~ where: Minimum Relative Compaction is~the ratio, expressed in ~ ~ ~ .percentages, of the compacted dry density to the maximum dry . density, as determined in accordance with ASTM Test . Designation D X557.97 (Modified Proctor. . L~M~rA r~onrs The conclusions and recommendations contained in this report are based on site conditions as they existed at the time of our exploration and assume that the soil and groundwater conditions encountered in the hand borings are representative of subsurface conditions on the site, If the subsurface conditions encountered during construction are significantly different from those observed in our explorations, we should be advised at once so that we can review these conditions and reconsider our recommendations where necessary. Unanticipated soil conditions are commonly encountered on construction sites and cannot be fully anticipated by merely taking soil samples with hand borings. Subsurface conditions can also vary between exploration Iocations.~ Such unexpected conditions frequently require making additional expenditures to attain a properly constructed project. ft is recommended that the owner consider providing a .contingency fund to accommodate such potential extra costs and risks. This is a standard recommendation for. all projects. This report has been prepared for the exclusive use of BOLA Architecture +Planning, and its representatives, for specific application to this project and site. fur recommendations and conclusions are based on observed site materials, and selective laboratory testing and engineering analyses. fur conclusions and recommendations are professional opinions derived in accordance with current standards of practice within the scope of our services and i~ithin budget and time . constraints. No warranty is expressed or implied, .The scope of our services does not include services related to construction safety precautions, and our recommendations are not intended to direct the contractor's methods, techniques, sequences, or procedures, except as specifically . described in our report for consideration in design. fur services also do not include assessing or minimizing the potential for biological hazards, such as mold, bacteria, mildew and fungi in either the existing or proposed site development. r,r=r)rr=r.N rr)ni.qE 11 rnnir(Z incr. ~4LA ,~rcf~ifecfc~rz °~anr~ing JN 09135 July 14, 2009 ~ Page l ~ , ~ ~ ~ . ~ ~ ~ ..AflDlTlnNAL:S~'~4VlC~'S ~ ~ ~ in addition to ~~reviewing the final ~ plans, ~Geotech~~ Consultants, Inc. ~shou[d. be retained .to~ provide . ~ : . ~ . ~ geotechnical consultation; testing, and vbs~ervation services .during construction, .This is to..confirm . ~ ~ ~ ~ ~ ~ that subsurtace.~ -.conditions are' ~ consistent with those indicated . by .our exploration, to .evaluate,: ~ ~ ~ ~ ~ ~ whether ~earthwork~ and foundation construction activities comply with ..the general intent of the recommendations presented in this report, and to provide suggestions for design changes in. the. event .subsurface coriditioris differ firom: those anticipated prior to the sfiart~~ of construction. However, ~ our ~work~ would not ,include the ,supervision or direction of the actual work ~ vt the ~ ~ contractor and its employees~or agents: Also,~job and site safety, and dimensional measurements, will be the respansibility of the contractor. During the construction phase, we will provide ~geatechnical observation and testing services when . . requested by you or your representatives.. Please be~ aware that we can .only document site .work . ~ . we actually observe. It is still the responsibility of your contractor or on-site construction team to . .verify that our recommendations are being followed, whether we are present ,at the site or not. The follar~ing plates are attached to complete this report: ~ ~ ~ . Plate ~ Vicinity Map Plate 2 Site Exploration Plan Plate 3 Hand Baring Logs Plate 4 Grain-Size Analysis . we appreciate the opportunity to be of service an this project. if you have any questions, or if we may be of further service, please do not hesitate to contact us. . Respectfully submitted, GEGTECH CONSULTANTS, INC. . Jeffrey M. Johnson Geotechnica[ Engineer ~r t s ~ i' ~ ~ r ~ ~ . ~ ~ ~ .~a D. obert vlrard, P.E. 1~~~L~ Principal DRVV: jyb .a r:[=r)TP=rN rr NI(Zl 11 TnNrrCZ incr. i Y,¢~,,~.r; ~ ~ rIY4 i - - ,2.42nd15E ~242nd~ St 241st Pf'~15 E~ c~lifl u ~E ~.Te erance~'St' , ~F ,a:'~5242~►di 'S_1. .Q t:o N a:~ Pl'SE; 7 7i k'', l,, i'''.~' ,t' q1, ~ I e PI~I •'r- pl' Q' .1 . ;mSE 243rd' 1 1 y } IQ r w ~ } 5t 7 r: v i' 4 ~ • ~ .:.1 w ~SE r- , O 5t~ I. t cwn v"'i r 1 u"'i ~ c° t^ w I~'. SMITH' en#"Ifi arical I+; a 'a S 243rd t , ,.W a x,'24 r • ~ 1 ~ , 516 Satiety useums, $,244th °1 ' ' , ~ . ` , ,r, e ~ 'ST o :•5. i . o ~ WW. , SE ~ , ~Z 'fh ~ 5t a.; a'' " ;SEA th ,tip , 1 s , 1 J,. , , :7~at C rq~ t '':.C r t ~E, W~arda5tl ,til. I~,,if+i` ` I ,'b ,..:5tH ~ 'S .P SE;•2g4t ~Ct'Ly O ` l"•"~cn asaa ',..i ~ 1 F ,`V wS Q . t.s r r7 ~1 ~ ' i • Z ' I', ' VI .Q.. 7 11 , sO i~'~'et ; r" 7 , n ~ f~.'. 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' ~s~ _ _ E 288th ~t 722f~'~' ' n C 4rath wSt ~ j r1 ,~~.nnS1=•~"~-C'n ,.CrlLlin'd'~'7°n;pl>. n.-.c ~c"n,7r..a ..rm'r..~' _i:m r.:7r1 , ' ~ I r i z a a,u, a.=,, x, 1 ~ is 1 4 w, ~ v , : • - ~ ~~T ? sck..p~ [/1'r`.t:.,,.,,,_..ar.,.a:.:.. k•^;~f~~ a~..i xt: :.::~aec's:~ i ~.T~:~~Ni:~.,.smw' . I ~ o ' . .Y~~.'{.._ ~ ~ ~ SE° ¢ 290th 5 St ~ izda' l c G , (Source: Tnamas srathers, 2048) ' ~"ICINITY MAP G~ ~ TE CH 28125 G reen River Road Southeast • coNSULTA~TS, nvc. Auburn,1111as h ~ n gto n . _ Job No: Dafe: Plate: 09135 Judy 2009 ~ ' 1 ~ HH-3 driveway and ~ parking m s N ~ H-z 0 L VL /L~ V HH-1 ' SITE EXPLORATION PLAN GE O TE CH 28728 Green River Road Southeast corrsur.T~rs, nvc. Auburn, Washington ~ Job No: Date: P/ate: 09135 July 2009 No Scale 2 i' ~ o ~ o ~ ~ ~ .Descnp~~on 3"topsoil with roots over : o Brawn, silty SAND, ~ne~grained, very moist, loose ~ ~ , , m=~ Z.2 /o . SP ~ ~ . SM ~ ; * Hand hole fierminated at 4 feet on June 24, 2009. ~ ~ ~ ~ * No groundwater observed during exploration. ~ ~ . ~ ~ ~ 1 `11 ~ . ~ HAND HALE 2 oti~ ti~ ~ ~ ~ ~]escnptzon 3" topsoil with roots over o Brown, silty SAND, fine~grained, very maist, loose rn~~9.5/0 SP SM Hand hole fierminated at 4 feefi on June 24, 2009. 5 Nv groundwater observed during exploration. 1 ~ . ~ .HAND HALE 3 ~ ~ o'~ ~ ~ ~ ~]escnpt~on 3"topsoil with roots over o Brown, silty SAND, fine-grained, very moist, loose SP SM * Hand hole fierminafied at 4feet on June 24, 200.9. 5 * Na groundwater observed during exploration. ' ' BRING L~~ ~E~TE~H 2S12S Green River Road Southeast coNSULT~rs, nvc. Auburn 1~Ila s h i n to n ~ s g Job Date: Logge~f by. Plafe: Q9~ 35 July Zoo9 ~M~ 3 Percent Passed o ❑ o 0 0 o v o 0 0 0 G . #200 D ' #~oo . ~ #40 ~ ~ ~ ~ c ~ N~ o ~ m 5 ,C N ~ q~ r~ Q c N o .L m #10 ~ _ ~ N = #4 0 a 31S" T 314" l~rl D r SIEVE ANALYSIS ` GE 4 TE ~ H 28128 G reen River Road S E cor~sULTANrs, nvc. Auburn, vUashin ton g Job No: Dade: Plafe: - - 09~ ~u~y 2009 4 Exhibit 13 Ordinary High Water Mark Study i ~ ~ September 15, 2009 Leah Dunsdon, P.E., Project Engineer City of Auburn Public Works Department 25 West Main Street Auburn, WA 98001-4998 Re: Mary Olson Farm, Green River Ordinary High Water Mark Memo The Watershed Company Reference Number: 081004 Dear Leah: On September 1, 2009, Fisheries Biologist Mike Mazur and I visited a portion of the Green River west of Green River Road across from Mary Olson Farm in the City of Auburn. The purpose of our visit was to flag ordinary high water mark (OHWM) along the eastern bank of the Green River in the vicinity of a proposed parking lot improvement. This letter details the results of our study. Methods The ordinary high water mark (OHWM) of the Green River was determined based on the definition provided by the Washington Department of Fish and Wildlife and WAC 220-110-020(57). The OHWM is located by examining the bed and bank physical characteristics and vegetation to ascertain the water elevation f or mean annual floods. The areas across Green River Road from the existing parking area were examined for OHWM characteristics and flagged. The OHWM was marked with blue- and white- stripedflags along the eastern bank. Field observations and published information were used to classify streams. As requested, an 800-foot long section of the Green River was flagged as part of this study. The center of the 800-foot study section is located across from the center of the angled parking grasscrete area of the proposed lot as shown on the Exhibit 1 Shorelines drawing provided to The Watershed Company. Findings The banks along the portion of the Green River contained in the study area consist of an armored bank constructed of riprap. Vegetation along the riverbank consists of Himalayan blackberry, Pacific willow, Sitka willow, bigleaf maple, and reed canarygrass. The water depth averaged one to three feet at the time of our visit. In total, 37 flags, numbered WM-1R through WM-37R were hung along the east bank of the river. _ ~ . _ Mary Olson Parking Lot, Green River OHWM Memo Leah Dunsdon, City of Auburn September 15, 2009 Page 2 Regulations Streams in Auburn are regulated under Chapter 16.10 of the Auburn City Code (ACC). Under the code, streams are rated as one of four classes based on inventory status as "Shorelines of the State", size, and fish habitat provided. The Green River is classified as a Shoreline of the State, according to the City of Auburn Shoreline Management Program, making it a Class I stream. Class I streams are required to have a minimum buffer width of 100 feet [AMC 16.10.090.E(2)]. Please note that the findings of this letter, including stream classification and resulting buffer width predictions, are subject to the verification and agreement of local, state and/or federal regulatory authorities. Please call if you have any questions or if we can provide you with any additional information. Sincerely, Ryan Kahlo Ecologist Enclosures n s ~ y. ` ~,rv LCg@Ild: Appl'OX1II1`dt8 ~ OHWM boundary WM-111, l~g ~j ~U.. $ 3: p " ,t~?, R cf ~ ~6 s. T'~ ~ 'yU Green River Yellow jacket nest OHWM, start ~ % a'1~^ s r: r 12~ ~=d"~. ' aF4 `n . x+ax ~ iz '.s ~ .,k d.. ~~~t4 'g~, i # ~ ~ o~''~~`+' ~ ~c, . ~~A - ~-''A° r' ,n,: : ?'v ~3, a.Y~ ^ , 0. ~~~r~°• ~d , - 4 fv x~Y',i^'-, i :3_~~~° w w '~Ft+lu'~~^ sti ~ S~ ~ . y~~ , . {.'.'i ~ ~ f b ~r ~ 'L d ~ . y ~ v . . , . _ ~j,- ' • 4 . , ! ~ ~ E 4'~~~ y ~ . ~ Y ~ w ~t 3~~~ ~ ~ ~..i~~~ia,'a . ~ ~ 7~ ~~t~ ~ ..*p ~n~ p K• ~.,-~c..~ 3'si f i ,rv2~j~~ `~-M^* ~ '''~s ~tii~ ~ -j~ i ~~a ' vo .`3'za° ' "g~`-. 3 f ~ ~i.~a t} ~ ft-+W~gpR_.'~ ~ ~ fr$~i+'~t, .iv~'i J ~,~a` ,~e . ~~~'~e~ ~a;i•°,`y^ . ~Y,~`r~3?~, x Yellow jacket nest between : WM-33R/34R . C #F t 'ie + 1~ ~ y . . ? r,~.~y€4 Nd~ea~.E:~w~~r_..,`, A&, r a~~t"~s ~ ~'3 ~i s f.. V~.:~ ._~w`.g.~ ~n - x„ t`+~' ~ , ` ~l. , r ' { x~ K •o r I ~ ~ _c ~ ,.k~ k , y,. t . . :F Y g.-,~ ~ + ..s<" . . " ,t . ~ ~ +~,,~'.'r . , , WM-37R, Last Flag Y,~ ~ ~ ♦ ~f• - < ~Y'. A~C~' , % Q t . ;,ysy 'h y a'~r L , . . , ~ t f ~ t r~f ;r r~g~~ e,, '•v . ~ ~ , • d ' , _ . . . . , - . - Ordinary High Water Mark Sketch lvote: Areas shown have Green River, Auburn, Washington not been surveyed. Prepared for Leah Dunsdon, P.E. All locations are City of Auburn Public Works Department approximate and September 2, 2009 ~ not to scale. T H E - WAT E ft S H E D: 754 $i~n sereec s~Ut, r - ~a,d i wa 9e61) p 425:822.5242 f425:827.81;36 C:O:til PAhIY _ Exhibit 14 Surface Water Technical Information Report SURFACE WATER TECHNICAL INFORMATION REPORT GRADING AND DRAINAGE PERMIT Mary Olson Farm Parking Improvements Auburn, WA Prepared for: Mary Olson Farm 918 H Street SE Auburn, WA 98002 Contact: Patricia Cosgrove, Farm Director Prepared by: WR Consulting, Inc. 3611 45th Ave W. Seattle, WA 98199 Contact: John W. Rundall, P.E. Date: June 17, 2009 Parking Improvements -Mary Olson Farm June 17, 2009 i TABLE OF CONTENTS SECTION I: PROJECT OVERVIEW l General l Predeveloped Condition 2 Proposed Development 2 Proposed Storm Drainage Facilities 3 SECTION II: CONDITIONS AND REQUIREMENTS SUMMARY 4 Conditions and Requirements 4 Core Requirements 4 Special Requirements 5 Sensitive Areas Ordinance Requirements 5 SECTION III: OFF-SITE ANALYSIS 6 Standard Requirements 6 SECTION IV: FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN . 6 Existing Site Flood Hazard 6 Site Wetland Reconnaissance 8 Existing Site Soils 8 Existing Site Hydrology 9 Developed Site Hydrology 9 Performance Standards 9 Flow Control Facility ..........................................................................................................................................10 Water Quality Facility .........................................................................................................................................10 SECTION V: CONVEYANCE SYSTEMS ANALYSIS AND DESIGN ..................................................11 Standard Requirements .......................................................................... .............................................................11 Proposed Conveyance System ............................................................................................................................11 Bio-Retention Overflow Weir .............................................................................................................................11 SECTION VI: SPECIAL REPORTS AND STUDIES ................................................................................12 Geotechnical ........................................................................................................................................................12 SECTION VII: OTHER PERMITS ...............................................................................................................12 SECTION VIII: TESL ANALYSIS AND DESIGN .......................................................................................12 SECTION IX: BOND QUANTITIES, TIR WORKSHEET AND DECLARATION OF COVENANT.12 SECTION X: MAINTENANCE AND OPERATIONS MANUAL ...............................................................13 Appendices: Appendix A -Downstream Analysis Appendix B -Wetlands Reconnaissance Letter Appendix C -Runoff Calculations Appendix D -Rain GardenlBio-Retention Facility Calculations Appendix E -Plans Appendix F -Facility and Bond Quantities Worksheets Parking Improvements -Mary Olson Farm June 17, 2009 i SECTION I: PROJECT OVERVIEW General The proposed parking improvements project Mary Olson Farm includes, the construction of ingress and egress to a new parking and bus load area. There will be parking for 30 vehicles ' (including two ADA stalls) and a bus load parking lane that will accommodate two busses. The parking area will improve access to the Mary Olson Farm. The bus load wili allow for instructional visits by students and promote the use of the park as an interpretive and educational facility. The Mary Olson Farm site is over 50 aeres and is located in the City of Auburn and King County. The street address is 28728 Green River Road, Aubum Washington. This work for this project is on 5.18 acre parcel within King County. The"portion of the site impacted by this project is approximately 1.04 acres. See Figure 1- Vicinity Map. . coposed Park~rtg'A~a~.;' ~ Nt `;~Disar~, Fatrri; k ~°r yY l. ~ ~ ~f II I ~ e.i.~ 4 raF Figure 1: Vicinity Map Parking lmprovements - Mary Olson Farm June 17, 2009 Page 1 , Predeveloped Condition The existing condition of the proposed development area is a flat grassed pasture. Neazly the entire parcel is pasture but there is a sloped hillside covered with 2nd growth forest along portions of the east margin. There are no drainage improvements on the sife and runoff generally drains to the north and into the roadside ditch along Green River Road. The following photograph is representative of the existing site conditions. , . _ "d # Proposed Development The proposed developmerit area is approximately 1.04 acres. Proposed development includes access driveways, parking and bus load, a bio-retention facility, a pit toilet and paths for pedestrian circulation. The new paths will provide a connection between the parking area and the existing developed play areas and grass fields. Much of the 5.18 acre site will be preserved in its undeveloped. condition and areas surrounding the proposed parking`area; including the bio-retention faciliry will be planted with native landscaping (trees; shrubs and groundcover) to restore forested conditions. The following table summarizes the changes in land use impacting stormwater runoff on the site. The areas indicated are the basis for the hydrologic calculations for the site runoff. Figures illustrating the areas of impervious and pervious surfaces for the pre-developed and post-developed site are included in Appendix B. Parking lmprovements - Mary Olson Fann June 17, 2009 Page 2 TABLE 1-Summary of Project Areas Total Percent of (acres) Parcel Predeveloped Conditions: Impervious 0.000 0.0 Pervious 1.043 20.1 Tota I : 1.043 20.1 Developed Conditions: Impervious 0.324 6.2 Pervious 0.719 13.9 Tota I : 1.043 20.1 Undisturbed Site to Remain: 4.137 79.9 Total Parcel: 5.180 100.0 Proposed Storm Drainage Facilities Storm water runoff from the proposed development area will drain by sheet flow to abio- retentionpond designed in accordance with KCSWDM, 2009, Section C.2.5. As a Flow Control BMP, the bio-retention facility allows a 50% credit for the tributary impervious surface per Table 5.2.2.A. The bio-retention facility is designed to overflow for dispersal onto the remaining pasture land (4.1 acres) on the site. Calculations of peak runoff show that the proj ect is exempt from detention because the developed peak runoff is not increased by more than 0.1 cfs. Water quality requirements are met by the use of filter strips along the edge of the wet pools in accordance with Figure C.2.5.A (KCSWDM, 2009) and the water quality benefits of the grasscrete paver in the vehicle parking stall areas. The proposed bio-retention facility will be planted with water tolerant plants in accordance with Table C.2.S.A (KCSWDM, 2009) and native trees, shrubs and other groundcover. The pervious areas around the bioretention facility and berms will be planted with native trees and shrubs to further promote infiltration and evapotranspiration ofwater. Since the proposed parking area is located on a flat site within a large expanse of well established pasture natural plantings, there is limited need for temporary BMPs to prevent erosion. Stabilized construction entrances are proposed to prevent sediments from leaving the site and straw wattles (D.3.2.5) and silt fences (D.3.3.1) are proposed to limit sediment laden runoff. Vegetated strips (D.3.3.3) minimum 25 feet in length outside the clearing limits will provide sediment control for much of the work". Permanent stabilization will be provided by mulching and extensive native planting of all disturbed areas within the clearing limits. Parking Improvements -Mary Olson Farm June 17, 2009 Page 3 SECTION II: CONDITIONS AND REQUIREMENTS SUMMARY Conditions and Requirements The proposed project requires a full drainage review in accordance with the King County DDES development standards which references the 2009 King County, Washington Surface Water Design Manual (KCSWDM, 2009). The SEPA review process is currently underway by the County, although no special mitigation measures are anticipated at this time. The City of Auburn is applying for the following permits for the parking improvements in accordance with King County requirements: ~ Clearing and Grading Permit • Drainage Permit • Right of Way Use Permit • Shoreline Substantial Development Permit (SSDP) Core Requirements Core Requirement # 1: Discharge at the natural Location, Section 1.2.1: Flow from the site will generally follow the existing drainage pathways. Some of the runoff will be detained in the bio-retention facility and any overflow will disperse to existing flow paths and follow drainage patterns on-site. This flow pattern is consistent with the historical f low of runoff since the County Road was constructed. Core Requirement #2: Offsite Analysis, Section 1.2.2: A Level 1 Downstream Off site Analysis was performed for the initial development of the site. No indication of erosion or downstream flooding problems were observed. Core Requirement #3: Flow Control, Section 1.2.3: The site is within a "Conservation Flow Control Area "however the increase in peak runoff does not exceed the 0.1 cfs therefore, flow control facilities are not required. Flow Control BMPs including Rain Garden (Bio-retention) and Grassed Modular Grid Pavement (per Table 5.2.2.A) are used to reduce the developed runoff and meet the 0.1 cfs exception. Core Requirement #4: Conveyance System, Section 1.2.4: There are no conveyance systems for the on-site improvements because the impervious areas are graded to slope directly to the bio-retention facility. Culverts are provided to evenly distribute stored water among the three parts of the facility and to prevent ponding between the two driveways along the County Road. Core Requirement #5: Temporary Erosion and Sediment Control, Section 1.2.5: The project includes temporary erosion and sedimentation control measures, to prevent transport of sediment from the site during construction and until the site is stabilized after construction is complete. Core Requirement #6: Maintenance and Operations, Section 1.2.6: The City of Auburn (Owner) will be responsible for the maintenance of proposed conveyance, water quality and bio-retention facilities. Parking Improvements -Mary Olson Farm June 17, 2009 Page 4 Core Requirement Financial Guarantees and Liability, Section 1.2.7: The City of Auburn (Owner) will be responsible for bonds (if any are required). Core Requirement #8: Water Quality, Section 1.2.8: The site is within a "Basic Water Quality Treatment Area"and treatment will be provided by filter strips along the edge of the bio- retention facility, the bio-retention facility and the use of the grass modular grid pavement in the parking areas. Special Requirements Special Requirement # 1: Other Adopted Area-Specific Requirements, Section 1.3.1 • Critical Drainage Areas (CDAs): Not Applicable • Master Drainage Plans (MDPs): There are no known master drainage plans covering the project site. The Green River Plan addresses the upper basin including Howard Hanson Dam which could impact flows in the lower reaches. • Basin Plans (BPs): The project is located within the Lower Green River Recon Area and no published Basin Plan for the area was located. • Lake Management Plans (LMPs): Not Applicable • Shared Facility Drainage Plans (SFDPs): Not Applicable Special Requirement #2: Flood Hazard Area Delineation, Section 1.3.2: See Section IV. Special Requirement #3: Flood Protection Facilities, Section 1.3.3: NotApplicable Special Requirement #4: Source Control, Section 1.3.4: Not Applicable Special Requirement #5: Oil Control, Section 1.3.5: Not Applicable Sensitive Areas Ordinance Requirements No additional mitigation measures have been identified. Parking Improvements -Mary Olson Farm June 17, 2009 Page 5 SECTION III: OFF-SITE ANALYSIS Standard Requirements A Level 1 Off Site Downstream Analysis was performed on December 1, 2008 for the construction of the proposed Mary Olson Farm Park parking area and paths. The site is flat and the general gradient follows the Green River downstream to the north. The construction of the Green River Road has altered the drainage pathways. It appears that prior to the construction of the County road, runoff from the uplands would sheet flow across the meadow and into the river. The road has created a barrier to this drainage, so it flows north along the roadside ditch until it reaches a cross culvert approximately 1,600 feet north of the project. The roadside ditch is in poor condition. Some portions are filled with debris, plants and an accumulation of grass and other leaf matter. The ditch appeared wet in places, but no standing water was observed. Although there is only a slight gradient toward the north, it appears to be sufficient to drain the roadside ditch, adjacent meadows and associated uplands. There was no indication of erosion in the roadside ditch or adjacent meadows. An annotated aerial photograph of the downstream analysis and site photographs with a description of their location are in Appendix A. SECTION IV: FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN Existing Site Flood Hazard The following figure shows a portion of the FEMA flood map for the site which shows that the parcel is not within the 100-year flood plain (the flood plain is indicated west of the Green River Road). The map shows the site is within Zone X which shows it is outside the 500-yr flood plain. A recent memorandum from FEMA notes that due to revisions to the Howard Hanson Dam, the Green River maybe subj ect to a higher risk of flooding. It is not known how this could affect the site; however the memorandum indicates the risk is mitigated with increased flood insurance coverage. Since the improvements are limited (paving and a pit toilet) and the site is located on the lower Green River, the risk is accepted. A copy of the memorandum encouraging property owners to obtain flood insurance is in Appendix A. 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CD > - :w E 1- •ar -•s~~d j'~~~.`2#r T ~~~'.N ~M,i t. . ~ . ~ ~ ~ ~ x "t ~i C O ~ 'C7 Q. 1- 0 izr ~D p O r r#~ar,.''± F "J~u~ ~ ~4.~r.~ ; ~ ~ G r~ _ ~ - r e►,,..r i~-A : ~ ~ C ~ +it ~ C/I ~ ~ ~ t~ .k~1-, ~x ~r #t-b : T r~ ~~i if; e f~, •1 iS x ~ 7 , `'n~, 1~` (p CD Cp e-r C~ _ ~t y • t;' , s = 4 ■~vY,~~i " r ti~ ~ ~ ~ ;E► , ~ C ~ ; •~~...c j 7 -a-' k~, a 4~'~r . s~t r, • ~u F j ~ C ~G ~ ~i~ ~3~h~~'. °:.Y~~f" f e~{ ~ ~ ~ ~ Y F~u :'~t ~ . t i ~ • ~+r ~ ~ Iz. ~ CD. CD Q 0~~ ' S rF ~~..ry Z.~.,>`~ t ~ ~1,~'a'` .-.~ypx a~ ~ F;U`~ ~ ~ • y~~ '~t ~,e-.k'-'. . C1. CD y R C r+ ~ 00 Y ~ ° t t'. Ek . ~r J . >yc~~ 5 Z' • ~ ~ ~ CD n 70: PE<'"•r _ : . ~ - ; T Wi~r t p r ~t ,a~ ~ ~ ~+.~j~,• + "~'1l ~ ~ CD Existing Site Hydrology The proj ect site pre-developed conditions are summarized in a spreadsheet in Appendix C. The spreadsheet details the areas for input to generate the KCRTS runoff time series used to develop target peak flows. The existing project area is grass pasture however for the purpose of developing the target flows it is modeled as till forest. The soils in the project area are classified as "Till" per KCRTS classification. The off site drainage from the hillside to the east will be isolated from the proposed facilities by the bio-retention berm and the roadway drainage will be maintained in the existing roadside ditch. Table 2 -Summary of Target Flows -Mary Olson Farm Parking and Paths (cfs) 2-yr 10-yr 50-yr 100-yr Peak PreDev Flows: 0.029 0.051 0.078 0.084 Target Flows 0.014 0.051 0.084 Developed Site Hydrology The project site developed conditions are summarized in a spreadsheet in Appendix B. The spreadsheet details the areas for input to generate the KCTRS runoff time series used to size the facilities. The proposed project area is grass pasture, pavement and restored planted area. For the developed condition, the soil classification remains Till. Since the impervious surface will drain to the bio-retention flow control BMP it is modeled as 50% impervious and 50% till grass. Table 3 -Summary of Developed Flows -Mary Olson Farm Parking and Paths (cfs) 2-yr 10-yr 50-yr 100-yr Peak PreDev Flows: 0.059 0.097 0.160 0.187 Target Flows 0.014 0.051 0.084 Performance Standards The site is located within a Conservation Flow Control Area which requires a Level 2 flow control detention facility for the site improvements. However, through the use of Flow Control BMPs including bio-retention and grassed modular grid paving, as shown by comparing the two tables above, the increase in peak flow meets the 0.1 cfs exception, so detention is not require . Parking Improvements -Mary Olson Farm June 17, 2009 Page 9 Flow Control Facility Since the increase in peak runoff (100-yr) does not exceed the O.lcfs threshold, a flow control facility is not required. The proposed bio-retention facility is designed in accordance with C.2.5. The maximum water depth of the facility is 6" and there is 6" of freeboard between the maximum water surface elevation and the finished grade of the pavement. An overflow is designed to direct excess water onto the existing meadow and disperse on the remaining 4 acres on t e site. Calculations for the proposed bio-retention volumes are shown in Appendix D. The facility is divided into three ponds with 3:1 side slopes for the working volume of the pond. Within the main pond, there are two areas showing an additional 1 foot of depth and a small mound matching the height of the berm. These modifications in grades will provide some variation in plant substrate for visual interest and habitat enhancement. Appendix D also shows the volume of the proposed bio-retention ponds based on the contours indicated on the drawings. The volume is calculated using the average area between each contour lnterva . Water Quality Facility The proposed water quality facilities consist of filter strips along the proposed bio-retention ponds (per C2.5.A), the bio-retention facility and the use of grassed modular paving grids in the parking areas See Appendix E for plans and details. Parking Improvements -Mary Olson Farm June 17, 2009 Page 10 SECTION V: CONVEYANCE SYSTEMS ANALYSIS AND DESIGN Standard Requirements The conveyance system performance standard is conveyance of a 25 year storm event (Rational Method) with minimum 3 fps scouring velocity. The minimum of 0.5 feet of freeboard should be provided at catch basins fora 25 year storm event. The 100 year storm event can overtop catch basin structures, as long as the flow does not impact building structures . Refer to the Off Site Analysis in Section III and Existing Site Hydrology in Section IV for existing storm water runoff system. Proposed Conveyance System The primary conveyance system routes flows from the proposed paved areas within the drainage subbasin by sheet flow to the proposed bio-retention facility. The Plans in Appendix E indicate the proposed grading and sheet flow to the facility. Culverts are shown between the portions of the bio-retention facility to balance the water surface elevation among the three ponds. Eight inch diameter (8") ductile iron pipe is shown to accommodate the shallow grades and carry the anticipated loads given the limited cover over t e pipe. Culverts under the driveway are shown to prevent ponding in the roadside ditch during extreme events. The ditch has a minimal tributary area (primarily the adj acent pavement) so a minimum size of 12" was selected for maintenance purposes rather than hydraulic considerations. Ductile Iron is shown due to the shallow cover at the driveways. Bio-Retention Overflow Weir The emergency overflow weir for the bioretention facility was sized for the 100 peak release. This approach is very conservative as it assumes no infiltration and does not account for attenuation of flows due to the storage provide. Although a much smaller weir/overflow spillway would provide the necessary hydraulic capacity, a longer weir is proposed. The longer weir results in lower head requirements at overflow so it maintains the minimum 6" of freeboard. Also the longer weir results in very low outlet velocities and promotes dispersion of the overflow into the existing meadow. Calculations (see Appendix D) were made to verify that the erosive velocities for an overflow would not require riprap. The KCSWDM, Table 4.4.1.A notes that for velocities between 1 and 5 fps, a grass lining provides sufficient channel protection. Therefore the emergency overflow weirs will be planted and the natural planting will provide the required channel protection. Parking Improvements -Mary Olson Farm June 17, 2009 Page 11 SECTION VI: SPECIAL REPORTS AND STUDIES Geotechnical A geotechnical report is being prepared for the site and will be provided with the permit submittal. The report will be prepared by Geotech Consultants, Inc. No additional evaluations or studies have been undertaken for this project. SECTION VII: OTHER PERMITS No additional permits have been identified for this proj ect. SECTION VIII: TESC ANALYSIS AND DESIGN A combination of Best Management Practices (BMPs) will be used to limit erosion and sediment runoff during construction. Measures include: • Construction phasing, to minimize impacted areas. • Maintaining "vegetated strips" at limits of clearing • Stabilized construction entrance • Silt fence • Straw rolls (wattles) along drainage courses and existing paved surfaces • Sediment pond (interim use ofproposed bio-retention ponds) • Stabilization of disturbed areas with appropriate cover practices. The construction documents (see Appendix E) include provisions for maintenance of erosion control features during the duration of construction in accordance with the requirements in the KCSWDM. SECTION IX: BOND QUANTITIES, TIR WORKSHEET AND DECLARATION OF COVENANT Bond quantities, TIR Worksheet and declaration of covenant are provided as needed in Appendix D. Parking Improvements -Mary Olson Farm June 17, 2009 Page 12 SECTION X: MAINTENANCE AND OPERATIONS MANUAL Maintenance Recommendations: The City of Auburn (Owner) will be responsible for maintenance of proposed private conveyance, water quality, and flow control facilities located within the campus. The following maintenance recommendations are supplemented by the attached portions of King County Surface Water Design Manual, Appendix A. No special maintenance requirements have been identified. Conveyance System Maintenance Recommendations: Refer to the following Surface Water Design Manual recommendations for catch basin, pipe, and rip-rap outfall cleaning and maintenance. Debris Barriers (Trash Racks) Maintenance Recommendations: Refer to the following Surface Water Design Manual recommendations for cleaning and maintenance recommendations. Grounds (Landscaping) Maintenance Recommendations: Refer to the following Surface Water Design Manual recommendations for cleaning and maintenance recommendations. VVet Biofiltration Swale Maintenance Recommendations: Refer to the following Surface Water Design Manual recommendations for cleaning and maintenance recommendations. Filter Strip Maintenance Recommendations: Refer to the following Surface Water Design Manual recommendations for mowing, reseeding and other maintenance recommendations. VVet Pond Maintenance Recommendations: Refer to the following Surface Water Design Manual recommendations for cleaning and maintenance recommendations. Parking Improvements -Mary Olson Farm June 17, 2009 Page 13 ~I~. ~ -E1~ANE FIRE A~I~ DIT~HE Ya~tenan~ I~efed nr Pr~le~m ~enditinna 1Yhen Y~tenen~e is deeded f~eaut~ E~ 11Yren ~amparient Yantenancn ~ Parfurnred Pipes ~ndiment~ dehr~ Acamulated sedinent er d ttrat e~€eeeds 1Naiur freehy fhr~h pipes acnurnutat~n utthe d~m~terurlhe p~- 1~egetat~nlrno~ Veget~4nrVrouts that reduce free mnv~ernunt ~ 1Naiur freehy fhr~h pipes water through per. ntarman~ and Ark etirideraDe of aanfaminar~ of pnluinn s~u~ N~ r~nr~ed and d~pnse~ of palution ~ nil ~+alire, ~anrn~~ ~lurrie~ ~r P~irrt. accadin~ ~ ~pplitahl~ regulatian~. ~ I ~s mplemartted if apprepri~ Na caritatnir~ present amert>fan a s~r~ce nlm. [damage 1u prntectiwe Pra~rb+re ~g ~ damaged; rush nr oarrasian Pipe repaired nr replaced. ~aGig a auuus*un i~ rr~xak~xiin~ th~ ~Uu~lui al inl~gr~y u~ ~ri~ pal ~r p~- l~m~g~d Arty dent tltial d~crea~ the a~a ~cti~n ~ ~i fip~ re{aired ~r r~lac~d. pie ~ R1nre t~1a11 ~0~ ~ IS rrlrled ~ haYe wealrer~d shu~ral irrtugriltr nfth~e pipe. aitdr~ Trish and Trash and d~r~ e~aoeed$1 cubic ant per 1,~ Trish and cleared frnrr s~rara feet of Sikh and slnpe'sL ditches. pediment Acarmulated sediment fi~ ~9~ of the ditch deanedr'Aushe~ nF al s~ediraent acnurnufa~nn ~esigf depth. and debris sn that it n deign. u~ wend$ Ark naaciaus ar nuisance veQetatian wtudi r~ hlna~us and nrisa~ce +re~taban ~~te a hazard to urn personnel nr the remav~ed aaaordng taappicahle P~ r~ut~rra. N~ ~arrQer of na4~u~ vepetabnn arhere unto persnrmel nr the public mi~tnarnall~ he_ ntarman~ and Ark evidence ~ aontarrinar~ of peluinn sub Nth rertr~ed and domed aF p~nlution as nil: ga~lire, ~anrne~ slurries nr paint. accadinq to applicable regulaban$. ~ ~ar~l l~s mpl~merrbed if aGpreGriate_ Na C011t~nlr~lt~ present atherthan a s~rFace ei film. 1~ep~tinn Vepeta4on that reduces anent nF~raber 1Naier t freer fhreugh ditcls~ through Ches. Erasiar damage ~ Ark eresian observed nn a ditch slap~e. ~Inpes and oat eradirg. slap Idr fnirx~ nut of Q■e of less of rnd€ e~sts aheve nacre sail Replace radrs to de~jn starr~rds. place or miss<rg ~t area ~ square (net nr more, arjr d r~a~e ~4ppli®~I~~ ~I. Parking Improvements -Mary Olson Farm June 17, 2009 Page 14 N~. ~ - ~E~RI B~IEI ~E.a TI~H II} Ya~tenanae t]~fect e~' Pr~lem ~an~itian lrllhen Yaintenar~e ~ Heeded l~ E Yin C~r~panent Yeetenenae ~ Pe{fornred. bite Trish an d dedr~ Tres h ar debris plu ~9m9 mare than X96 of the Gamer dear ~ receive capady how. area ~Fthe harrier_ ~~dimen t Belli ment acounulatian ol= ~ thin ~09~ of Gamer dear ~ receive rapady Ilow. acaurn~tinn the area of itre barrier ~~u~ ~m bran ur urn which a~d7ed ~ ~ darna~ed - Sburrtur~ Kamer ai~hed to i~ loose P~ is laos~ er ~rad~ er concrete stru~hre ~ sound. aaclaed, tm~ken of loos~e_ Bars Bar spacing Bar spaan4 ~ nches~ Bars Kowa at mast ~ ~dre spa an~_ aamauged ar nr~sir~ Bars are gent nMUt ~ shape mare than 3 i~ches_ Bars in place wih ne Mends nrae bars than ndr. Bar$ are missing or er~re barrier missir~. Bars in puce accordin4 ~ design_ Bars ere and rust ~ rau~~ 5~°Jf~ I~ep~ ar repfaoe Kamer ~ desi~ deterioration ~ mrjr part of bamer_ statrdar~. Yeiitenar~e []efect nrPr~ieyr ~endi~ns Yllhen Yanbenan~ i~ I~ded f~esufts End Y~ ~fln~nenl Yantenance is Periur■~d ~fte I osn ur ~ and deGns wlydr e~ooeed 1 r toot I rasn and dew geared lrcrn site. per t,~ s~u~ feet ~fhis is ah~ut equal ~ the amarnt ~ trash rr would taloe ~ ~I up ~ s~rdard s elide ~ar~ge ~n~. Y ~erweral, the shmik! h~ m Dual e,rid~nrp nl' ~iumpinq Flaoa~us ids ~4n~naxiaus ~r nuisar~e v~egetaion wlrid~ nn} I~lnodaus and n~isat~ +~e~etrti~ avrrstib~ a hazard ~ urr~ personnel of the removed ac~ordn~ ~ appicahle putt. re4ula~r~. ~In~arx~erurnma~s v~getatin ins C~un~ p~xrrir~l nr the public milt narrnalfy he_ rrh~man~ and Artyevider~ ~carfamnarrt$ or pulution such Y removed and used ~ paluton as eila ~solire, ~anrne~ slurries nr paint. accardin~ ~ applicable reagulatian$. ~~r~e rarrt~l B#IPs inplemenhe+d if apprepri~e. Ne CQrit~nirra~ present der lfrarl a 9~~tace ni hlm. ~v~er mss ur ~r~arndaover exae~ds hrdres in er ~roundcover rn~owed ~ a hart haft r~ ~eabcr than ~ indiesL Tn~a and ;~hruh9 I la~ni An~tre~ar limb of :tree identirfiad as hevfr~ a IVo hard trees in taalif~_ paienbal ~ tal and r property damage or thre~n human A hind idedified ~ ~ ~uel~~d nr6aria~ mint ~ rcrna~red ~ a as pe~ihle. [~amaped Limbs ur park of trees er that ~ spl~ nr Trees and shrubs wih less Iran breken which aft mnm than ~'°Jfa of the tr~l of t~l tdiage with split a broloen fdiage ~ttre trey ~rshrub. ink Trees ursnruGs Inat nann= ~ dlawr dcrrrl or nla loam d~IRI vlarmn cr knaclo~d r kn r vtalirn Try ~r s~hruhs free of irjury. Tn~es ors~Frruhs which are nat a~qua~r Tree or Shrub in pla,ae and supported er are leamg ever: causing exposure adegrntefy sr~parted; dead of err the rmis dise.~rt h~ ~me~ Parking Improvements -Mary Olson Farm June 17, 2009 Page 15 N~. ~4-SET BI~FILTRJ4TI~N ~Y~4LE Yatirt~errance Defect er Prn6iem Condition When Yaintenarrae is Needed E~~ecfed When C~mparrerrt Yaetenarrce ~ Perfarnred Site Trash and debr~ Arry trash andlar debris accumulated at the site_ Na trash ar debris at the sr~. C~ntam~an~ sad Arty ~ridenoo of canlaminan~ ar polution such Mabaria~ nanraw~d and dspa~od of palutioa as ail, ~solire, canrne~ flurries er paint. awarding ~ applicable regulations. Source carthwl GPs inplemerthed if apprepriate_ No c~rninarris present otherthan a suface of tilm. Swale ~1eCtioln Sediment Sediment depth ~oGeeds ~ inches in 90'~ of the Na sedinrerrt dept ~ tre~trnent awumulation srrale treah~rent area. area. Erasiorrfsaouring Eroded ar scared swale botmrn due ~ Na eroded ar soared areas n channefmtian or higfr Vows. biaswale- Cause of erasion or scour ad~essed_ Water depth Water Trot retained to a depth of about ~ inches War depth of 4 irdres through out during the wet season_ Swale far mast of wet season. Vegetation ineffective Vegetatinn sparse, does not praride a~degua~ W~larMd vegefatio~n tuft' covers film off crowded out by very dense dumps of baltorn of sYlraie and no ~atta~ ~ caliail or nu~rroe vegetation. nursatroe vegetation present. Insutfioent wa6er Welland vegetation dies due ~a lack of water. Wetland vegetation remairm healthy ~maX requi~ converting th grass fned hios~wale Flow spreader Concentrated flow Flay frarn spreader not urrdnrrdy distributed Flows are spread evenly over entie auoss entre Swale width. Swale width. InletlDuUet Pipe Sediment Sedimenrt filing ~09~ ar more aFthe pie. Inlellhufet pipes dear aFsediment awumul~tiarr Trash and debr~ Trash and debr~ awrmulated ~ irletlautiet Na trash ar debris ~ per. pees ~ndudes iloatahles and nantiles~- aamaged Crad~ wider than -inch ax Ire joint of the Na mocks mare than inch wide at pipes ar any evidence of sot entering the joint aF the irletloUlex plpe_ al the Jolrrts of ltre Inletlbrrllet per. N~. FILTER STRIP Yahrtenance Defect er Pre6lem C~rrdibon When Yaintenarrcare is Needed Iul~ Eked When C~mporrerrt Yaetenancr` Is Performed Site Trash and debris ~4rty trash and debris aaaumdat$d on the filter Etter strip site free of any trash ar strip site. d~ Contarman~ and ~4rty eviderroe of corrtaminan~ or polution such Ma6eria~ renraved and domed of pafution as ail, gasdire, canae~ hurries er paint. awarding to applicable regulations. Source carthel 9l~Ps inplemented if appropriate_ Ho roritarninarrts present otherthan a surFace of film. Crays Shy Sediment Sediment acamula6an on grass ids ~ hln sr3dinrerrt depoa~ ~ treatrnent awumulation inches depth. area. ErasianFsc~uring Evaded ar saara~d Swale battorn due to hlo eroded ar soared areas it channefmtian or high Vows. biorswole. Cause of erasion or soaur ad~wssed_ too tall Crass e~rcessivelytaf ~cp~a6er than ~d inches ~ between 3 and 4 inches tall, grass ~ thn off rN~arree weeds cad odrer thick and healthy. No c~pings left vegetation has taken over_ n Swale. Ho nuisance vegetation present. Vegetation ineffective Crass has died out become iwely tal Crass ~ healthy, less than ~ inches greater than 1g inchesj or nrisanoe vegetation is higfr and no nu~rrae vegefation tal~rg over_ present. Flow spreader Concentrated flaw Flow from spreader not urrdnmrly distributed Flows are spread evenly over entie aaosa errtre Swale width. Swale width. InletlCuUet Pipe Sediment Sediment filing 20'~ or more of the ppe. InletJhutlet pipes dear of sediment_ awumulation Trash and detrr~ Trash and debr~ acormulated ~ irepautlelt hln trash or debris kr pQes. pQes ~ndudes iloatahles and nonbles}- [~amaged Crada wider than ~4-inch ax Ire jairt of the hlo ricks mare than ~nd7 wide at irletroutlef pipes ar any evidence of sot entering the joint of the irlepa~ulet pipe_ at the joints of ttre inletlorrliet pQes. Parking Improvements -Mary Olson Farm June 17, 2009 Page 16 Yairtensnce tlef~t ~rPr~lem ~~nditia■ then Ynintener~e ~ deeded I~ul~ End 11Yhen C~II~ie11t Yente■en~e is Purtamud bite Trash and d~hr~ ~4rn} trash end d~ris ~rcurr~~d an th~ tp~nd s~ Ifr~ ~f arty trash ~r we~nnd sue. hlm[inr~ ~ ~rry maintrs ~r nuisarrr•~ lirri wtrirh may i~ and nrisanr~ w~tali~rr ~ a ~rard to uriy pe~s+onnel ar 1he rrrmnrred aa-ordn~ ~ ap~i~le pug. regut~ans. He ganger nr n~~s r~~etation County p~rsarrrd er the public milt norrnaf~ he_ ~ntamrran~ a~ Arry ~rida~ ~f ~anhaminarr~ ~r palrition such i~abariath r~nra~d and d of polution a~oila ~salire, ~nrxe~ ~urri~ er paint. aocarding to appli~hle regulations. ~nur~ rl GPs mp~mertbed if appr~priatr;. N~ rarrt~rnin~ present nttrerlierr a ~rFace ni film. r ~ gr~und~o+~er a~aae~da 1$ in ~ 4round~rernr~d to a heigfrl tart n~ grear~r than ~ ind~es~ ~id~ ~lop~s of darn, f~ndr3rlt hd~ ~ ~ r~ad~nt h ~ l~ri~ ~ actir4 th r~n~e+d ~r ~tr~y~ed ~rrd Bexrn, ir~mal berm a~~ ~m or tmrrn, or arr~ evider~e ntrraber dam or berm repaired. er EmhanlQnenl p~rg through darn ar herrn aria r~rrt hnlesL Tree gro~th T~ grmwth 1hre~ns its of hemrs of Tn~es da not hinder fadlit~ slape~ Trot allur~r rnair~nanoe a~ess~ of performance ur nrairtbernnee i~rfa~s with nnirrter a~rity. If h~a a~ artiathe~a. not ~ fret to dafn, term or en~nlanent i~r~, a~ rmt interfering writh a~~ss ar m~ir~tenam~~r laarre~ d~ not ~auae a plug~irr4 prahlpm Il~yd~ rr~t rr~rJ to h~ rnm~ri Croaim Cr~dr;d drn~e ever ~ inches d~~p yvh~re ~aus~ ~Inpes stabil~d ruing a~raQritit~ of ~ma~e is ~I present or when them is err~n eorrtrul measures. ff erosion pabenial iar ~ntinued err~n. n ~ o~cuning on eamp~d ~ edser~ en ~ eompae~ slape_ greed ~ e~reer s~eulp de ~rr~ulta+d to r~satw~a ~aur~ of err~n. Try ~r ~i~ ~I~p~s ~~nr~t ~4rry ry~t rrf ~ dam, harm ~r ~mhanlirn~t that h~ T~~r sid~s{np~ r~t~r~d ~ design of dam: firma settled 4 irdres Ivor than the design emotion. diner~rrs. fFsetlerrrerrtis mtemal of srgnrlicant, a Iroell5ed o~ er~reer Errrt~rkm~nt should h~ ~n~lbad t4 d~min~ tie cause of the t Irr~ar ~urta~ an T~ ~f harm ■~t rnriform a~ lov~l. Tip ~f term d ~ ~9n irtemal berm elevation. Pend Arias pediment ~4~unulab~d s~din~nt that 1046 ~f 1h~ ~~dim~rrt cl~an~d outs d~sign~d acaumdabon ~ desired purid depth. pond shape a~ depttL first I te~l~ ~e~diment pediment acarmulatiur~ ~ pond huttam lhat ~edimeTt s~rage oorntair~ no acaumul~n t e~eeds trte ~ storage ~1 sebmerrt. ~ Plus ~hrdre~. Lire darndg~d ~Il Liner ~ ~~ih~le ~i praid Baal trr~ld wadi a~ Lim repairari ar replaaari. Appliahle~ ~ later ll Fret ~1 ~m~r, da~esn~ held water. 1~~r nrtairr~d in fiat yell ~r mast of wetpeal oel~ tie ter. y#l~ mad AIQae m~ flap m~ m~ than 1 cf ~ Algae rrr~ rcrrarre~d ~u~u~lly th thc we~ol oel~ water suri~e should he rerrav~ed. bte srarrnr~ hefnre Fal rains, eSpeCi~l~F Irr rrsih~re Lam Pru~r:Gan Area~.~ ~rawil~ Grain Inopexahle valwr Vatwe wil not open and dom. Vane open$ and nks norrrall~r. Va1se won't sal Vatwe does not sal eempletiel~. Vane eamplete~ seal nlased. Fnr:y ~]~rArr~r T~ grrnrrth Tmp grrnrfh imp~d~ ik~r nr thres~far~ stahi~ of Tn~ rarnr~rl ~p~llw~r sp~lnra~- Parking Improvements -Mary Olson Farm June 17, 2009 Page 17 APPENDIX A - Downstream Analysis Parking lmprovements - Mary Olson Farm June 17, 2009 Mary Olson Farm Downstream Analysis December 15 2008 w,., . Ex. Cross Culvert I 53 F ' ~ Green River `f ~x' Roadside Ditch/Drainage j APProx. ~ 1,600 feet Upland Sheet Flow ' ; Onsite Sheet Flow _ Project Site ~ y a • ' - • - ~r, ~ • . s ~ ~ Aerial photograph with downstream flow path illustrated. Roadside Ditch Location: East side of Green River Road Roadside Ditch Condition: Size varies, some debris, overgrown with blackberries, grass and other plants. Typical dimensions: Trapezoidal channel, 12 inch base width, 12" to 18" depth and 2:1 side slopes. Parking lmprovements - Mary Olson Farm June 17, 2009 Additional photographs from street level: d i ~k{'rLT3~ ~.,e~ h '~~'~y, r ~ .~~tg'° r^~"?.f't t~ v-.~~c ``,y { ~ . ~r u r`.n r m~ v.~ a° .y w'' ai" .~ta;~L t •x ~3. . ' . ~ . q y~..b:. r ~ - a~• ~ ~ -r yr C ~ ~ - c ~'+,tp.,~,,,,.,~.~~ R ~ • n a..~.=• : y+" . -Te ;.t7 ~ a~.`~• ~ ~„y~ ~ _ I Zs~• ` ~ y ~ tt.m~ •k Photograph No. 1- This picture is from the project site at the edge of the shoulder near the proposed parking area entrance. The view is looking south and the Green River Road is on the right edge of the picture. .,y. ' au g44 ~ h , '!-a. . J t ~'r t+s+11 ~ s; ~ x . ~ •'~~~„g., ti F Wv~n~ :.'j~..,.. Photograph No. 2- This picture is from the project site at the edge of the shoulder near the ptoposed parking area exit. The view is looking north and the Green River Road is on the left edge of the picture. Parking Improvements - Mary Olson Farm June 17, 2009 . n•'` * 43 ~ v.. y ° , . , • 3{~ ' 1 ~'^-;,~~s,r ~7 ti ~.~~ir ~ ~ ~y ~ 5~f _ y t I~ a a a~q 4 ~ Photograph No. 3- This picture is from the middle of the parcel looking north toward the end of the parcel. The Green River is at the right edge of the picture, the Green River Road is in the middle and the project parcel is on the right side of the road ~•h7~r*. tf ~~~yY . ~ r a. . ~ 4 a ~ . > . i. ~ ~ ~ - - p t~~`' kir j' ~n v~ w!'".~'•r~".^ x - s i 7'F,r~ ~~~~t rr~ r,. -o' y~ t~'` ~ . j~~; ~ 7.' ' F 44 r ~ F F= i{ • i SY,!" f '4 ~ tJ . _.f F} D t'~k tf~+~ri e''sy Z. w +y► TA ~ y G . -.x.. Photograph No. 4- This picture is from the north end (downstream end) of the parcel looking south. The Green River Road is at the center right of the picture and the Green River is to the far right and is not shown in the picture. - Parking Improvements - Mary Olson Farm June 17, 2009 1a~#1~or~1~ Jet Reid Ole ~i~p~, ~A M~r~ , FE11dA~R 1~17{1~1~IRDU l~e~ ~S: ~ FE11dA-News I ~ ~~~5 A fah ~rper ~3~ ~1~7 ~i~ s~ GREEN RiR Ti~ALLE R►~[DE'I'S URtiEU 'I~ BUY Fi.~~l~ I~UR~INE ~L1I~PIA- Reccatly disccvemd degressi~ns in the right adja,ce~t t~ Howard H~scn Dam have led the T,J.. Amy fps of Engineers to reduce the amount ofwater it wi.11 hold bebind the dam ~ the flood season 'I~is reduced flood sage capaei~ty incre~ the risk of flooding ~ men River galley commuaities_ because tie exact nature oft~e givhlem with the ' ~ right abutmendt and t~ of the problem are sti11 t~ein~ r~fiPrmin~l~ r~~i~i~l ~ of the Fei1 Fme~errry 14tan~nt A~~r~ IUf A) ~~d the as~ngtan F~mergency t Division F~ are again resident businesses of the (~re~n River a11~r arm ~ fl~ad in~u~nce. ]t is an ine~pen~iv~e w~a~ ~ reduce firh~re ~n~a~ial losses eyed by flooding_ Federal ~oordinatin~ Mfr Billie Nunn , ~laadin~ is the mast common ~d the mast costly type of l disaster, especially in high risk flooding arcas_ Having flood insurance can be a to families why to recever dram a Head. ~Te ~agl~► urge pimple to puree it." o~ ho.meo~ner and business insurance d not cover #load damage. So homeowners and others a~ urged to buy flood i~~n~mrp_ Ins<trin~ residential or commercial property can be rcl~tively inexpe~ive compared to the potell~ high cost of reconstruction. Flaad irrsln~n~ is ilesigaed to he affardable~ and reside ~f 1 uaty also eligible far a discauut on their premiums_ People mould be a that, in genes there is a 30 waiting period before coverage becomes ctive_ Flood in~nrAnc~ fur ~ rrs, and bu~ine~s o~ners is available th local insurance agent. H,~eowners can insure their homes up ~ ~~r~D~; contents are insured up to ~1~4,OD~. Renters can also ecv~ their belcn~ings up tc 1 aUO~. ~'~mmerri~l Pipe cw~ers can insure their buildings r up to and the cow fir up to ~~O,t_ FF~+iA ~d state a~cials reca~end people purch~~ enau~h eerage ~ iepl~ce their pmaperty ~ p~teet their equiv. Flood in,~ee pays offwhethcr or not these is a presidential declaration. Mate ~oardina cer i~urt Hardin points out `~IIVIA can Daly of~r financial assistance to residents in the event of a presidential disaster declaration IVlost flooding is not e~hersivc enough to wanaudt a de~claratian but can stall he very costly ~r h~meowners_" Parking Improvements -Mary Olson Farm June 17, 2009 Pa~~ ~--1~EEN RIVER ALI~E'~ 1~EElVT ~JRF~.I T~ BU's FLOOD Il~ITI~A~E T~ ~e~n but ~rep~ri~g flea ~ pure ~a ~u~n the b~fi~ ~f ~rctin~ me~~ ~ an,~ ~rap~rt~ apt fl~~in ~i.sit www_fla~dsma~v ~r c~Il 1~-~1 ~TI`'~ 1~~- Fir m infermati,~ a~baut the ~it~ti~n with the Howard Ham I p1e~~e ehc the ~J__ Aim~~ ~fF~e~s~ weber ~t ~t~~~www.nw~.u~ae~_aimy.~i1_ Fir m infermati,~ ~n hew ~r Saar l~~ti~n ~f the rein Riper ~Tall~y, ~t g au~y~ ~ we~~t~e ~t= httg~~_l~ing~~unt~_~~rl~~~ ~dPlan ~1rB~ia.a. ~ ~ ~ Ord ~ r ~ar~ o pry ~ s terry g~.~a ~r~ ~ ~ iaQd d~~~ ~ ~d~~ Ord ~ ~ ~ ~t rr,~ ~ ap~r ~ . ~ ~r+~r, r~ w~ p~sa~~ v~i~e for ~ ~d~ aka ~s. rid disas~p~v~~~: r~r ~mc~~ Parking Improvements -Mary Olson Farm June 17, 2009 APPENDIX B = Wetland Reconnaissance Parking Improvements - Mary Olson Farm June 17, 2009 . s~~ ~ 1.6,- - Mus~ua~e~d Fmft Dhoeta- `~,Ciqaaf~ ~'~~k980~2>~jee~ -.~~~inra►'i'~cttancl;lnv~n~and:Site'-R+cvfdw =Dee~ kaapoa: :~AAdolf~2~~ is-~l~ase~ts~.pr~ onr. fmdm~s fiunn aweiUod `u~ga~!iq.~, ~dro~t~d~da #h:o i+~laty , mzwm~ kucft 3r.T0wMWA . ~i~:. Ti~'G'3~y' o~'Ai~b~ra is:vor~B a~xiu8 C~ eo. aoqa~ ~ 9=~ p~1 df fand~i~ate+d ea~c~cd'flmeau b~ivx~-$amd and:an~haf:t~S e~g UlspaFmmt fornB~e es eveotp~~'f~waai.tiviti~:.~;At -Y~ ~4~: ~~oiti~tiatiat~ aw~eiffiad ~"av~tigaticn~ fvr.pcs.p~cnasta~tap of wcklaijd~ a~a t1u peitu~l:. k~ ~►~rWlfk±oa~ alsu~lec!ed ~ ~t1~d i~eoP~Iri~~~anc~ a~~'~p+~ed P~R.ts~il ` , « , ~ i~u-Parking Areaiend t~a e~istii~g f~rm. vvhd~i ~astalIy fs►1f~ ~a: a~,vodaneil s+om3 ' . Methot~ 7'6o vvr~tleiid v~s ~ u~iz~ ~adbads prascn'bad ia'~ Wnsfit~!~i~see ~ed~eirds Id~tryicc~a~ and 13h~neotian Ada~nra~ March l fl9?_ Atet~nsl ~Y.etlmid~uv~arom3~ m~VS'.Gea~ggEcal Sp~ sa~l.meps;xnd'c~ amiab,pl~nbna.arec;e uaed to ~iu ~r iuitbl wg ofsiksk and.lncetc:pi~siblr - wet9ands:' `iTeg~cm, hydnalagy; emd sm1~ wt~ made as t~a'~te w" t~ve~cd by;ioa~ S1ne CoadY~innR Addlfsau hfoin&s:[tan-t;q~'and Scat Olinstad`candtuxed a sftav,isEi.cm Am18: 2(108, T73e 9-wreprdacei''u ~ by ~3~cni Rivc~.~aad 3o thawe~, ~opod i~1~~~t~opd.tiv3~i gr~ aad st~bs to?t~~ ~o~t~; ~ umidrvdoyed.fdaeste0snd tb ttrc east and sautb. 1Lr ps~c18 mlativ~t3' flat, co~m8.maaro"09mpBic de~i~uns aud.~ ~IIow'~~nmQh:d~itm n~ tlu ~ Iusflvmma poRiaa ef the paia, arlrte a.20~sta!! Paici~ Area ia pz+opased, is do~i~ted 6Y ~Y~ bl~kh~ry {7drilrus cra~rriac~) and t~eed t~tnm'~ass (Phafo~iacrundiawm) with;adam bmkcd fern.EF&Ydwm aqu~alium} alsopa~. Sail iavesiigasiumafbaad ~ffi ciu+a~na.~ CI QYR.4l3) t1~Y vvere.~+ ~id fr~Ob~e at the time of investigtiiqm. No "catorg ofviwetlemd hydroingy wene obsesvtd :w tdIa srm Bamed ari the ladraf weitand hydrology, hy3ria wfl hub== ar hpdrophy4c Plsffi. species.'We oonc8mded tbat tLe pnqpoaad padcitig . am is up3and» North of tbe p[opased Pmknag Area aQd +vithm ihe remmcber vf ft 9-ace sam vegtstion is cEodnated by vsrians aglaad g~scs. aied a~d xfirabs. Don~iu~oR species ia tbe cmtex of the ~i2t it~chede ~ (Dac{vlis Skwwwta}, swat vcrnalgmss (AutRoa:Qnr7uan odoroaaw), aad taU fcscuc (Fistr+cd orrnratemc,ccr). 5cittaned itnit tmss ar+e'tocatod ia t6is mea, as are Canada tbisttr (C'usiwn arnevrsrj,.bull.t~tle (GYrsium Parking lmprovements - Mary Olson Farm June 17, 2009 ; T w Ado Faakfa.Cbs&oiii Oson FmSn luly i&3ae PaP2 yatrtgwv}y god Scot's tmm tCy4pa xqpari;rrsj WJs ara daak gryi*bmwn OYRdd2) atd doo*=Nain redaurma~~,ic f~~ No.~ii~~t~. ~t'~¢!!y~I~rossr~ 8=d tm 1he 1wt Qfivalend kydMb'gy'a h}*driC 07 hdkecan ead uph±d Ptanx apcciea, xhc rcaaiedwof the sine appears rota uyindL. A narcow dicsh (apymtimateip 1:6aoQ vvide wd 2 fed dap) ovetrowa by` flimilSw blackbezrY is Presau: alM ibomttiw Rul: No vda was pmwt.in the ditch eod cails zuxm nnt aftinted. ln additim a laiget~ "Osmw rt►ad6ais xcsnot at thanartheastem pottion Qf'tTQe sda UpIamd vegelatian is lacmd e4a=c to L1zr8edhad. 'llhb8raappe.ats t*eSpUiW Sca961WpOn&Z 1►aW'em, tbmta $13ak BfIlYfth3~ ~W spCies afld hytric sadls the am wao no a,dulaAat a9 vm&nct oj:szFe Eest of 3hc sibr, a wffit-focnqg rommted stnpe is pesencwhiclais dominamed by b;# kef maple (,4cer - m-o,Pkikim) and Douglas Sr (P~vr&tsr*n iruerizfesEi) whh a mderatqry daminoed by Imdin plun tGodata °mu*wwl~msw'bcrr3' (t'n3Pharkarpos albW), aad thimbtebeiTy(&abus p-vflar=): W=Wsym btack~eiiy is pihe majority ofthe castenn sioe boaandxny, adjacant ta the faxeszed slopa, $ails 8t.ft tQe oF slapo vvcmdcy:'vaY duk 8ffynsb 6m"(1 DYR M) and d'id nat 9xtamn redakmarp5irfberi.vcs: 'Ilun,, na off-site werland condFti+oms edst kmadWdy esst of the sita. 6Vagoa Rnud 'A'6m edsting "wagm, rvad° kretweem the fanm and tLe p+oposed Parlcing Area 3s gmaelly 6 to 8 tat widc =d trends soAcast tam"thwes# dwugh the maturs m'vxed decichiaus and eoniferous faesk. Tlr smfa= is aompacted ffiail mstl Vavel fram a histoaical zoad mow overgrmwn bY grsssas and weeds. TU mxod rim sonVly ctiut of tGe Tarm site ativr a rid$e atxt dotim a west-faciug slopc to the proposed Parling a1rea. veptafian an thK mad indudes: omhnrWom sdu&S aeulc (Urtiaa Voda). efee*g 6=canp (Rduurmcadfxt rt-prw) and ather tutbs. Na hyflric srn1 or wetUnd hydralVy ind=toas war obscavcd along tha wag+on raw an@ we comchRled the area to he upland. - nank yon far ttie vpportunity 6o provioie tWs FevFesn. IIf yau hsve aflY qaas*m please omtset me at (206) T89-9656. Stin~y~ ~ Scott Otmsted As~atc 8 ivlogi~t Parking lmprovements - Mary Olson Farm June 17, 2009 APPENDIX C - Runoff Calculations . J Parking Improvements - Mary Olson Farm lune 17, 2009 Olson Farm Improvements -Parking and Paths Peak Runoff Calculations WR Consulting, Inc. May 28, 2009 Input Parameters: SeaTac Raiofall Area Calculations: Existing Conditions: SF Acres Impervious Surfaces: Concrete,AC and Gravel 0 0.000 Totals: 0 0.000 Pervious Surfaces: Pasture - Buffer @ Pond 1200 0.028 Pasture -Buffer @ Parking 5420 0.124 Pasture -Buffer @ Path 2185 0.050 Pature -Raingarden 7376 0.169 Pasture -Site 29237 0.671 Totals: 45418 1.043 Total Project 45418 1.043 Developed Condition for Proposed Conditions: SF Acres KCRTS Input PGIS Two ADA Stalls and ADA Walk 614 0.014 Driveway & Bus Pullout (incl. RoW Dwy) 11059 0.254 11673 0.268 Imp. Surfaces Path at ADA 146 0.003 Pad to Restroom &Restroom 475 0.011 Path at Parking to Prop. Line 2256 0.052 2877 0.066 Total Impervious: 14550 0.334 0.167 (50% Reduction to Raingarden) Pervious Surfaces: Impervious Reduction to Raingarden 0.167 Grassed Modular Path at Parking 415 0.010 0.010 Grassed Modular Parking (twemy stalls) 4370 0.100 0.100 Grassed Modular Parking (eight stalls) 1749 0.040 0.040 Grassed Modular Access to Field 124 0.003 0.003 Subtotal Grassed Pervious 6658 0.153 0.320 Pasture Restoration w/Native Plantings 4429 0.102 Raingarden w/Native Plantings 7376 0.169 Raingarden Native Landscape Buffer 3600 0.083 Trees and Shrubs Buffer @ Pond 1200 0.028 Trees and Shrubs Buffer @ Parking 5420 0.124 Trees and Shrubs Buffer @ Path 2185 0.050 Subtotal Proposed Trees and Shrubs 24210 0.556 0.556 Total Pervious 30868 0.709 0.876 Total Project: 45418 1.043 1.043 Parking Improvements -Mary Olson Farm June 17, 2009 Results of KCRTS -Flow Frequency Analysis Predeveloped Peaks based on assumed predeveloped condition of "Till Forest" Flow Frequency Analysis Time Series File:predev.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- -----Flow Frequency Analysis------- Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prob (CFS) (CFS) Period 0.066 2 2/09/01 18:00 0.084 1 100.00 0.990 0.018 7 1/06/02 3:00 0.066 2 25.00 0.960 0.049 4 2/28/03 3:00 0.051 3 10.00 0.900 0.002 8 3/24/04 20:00 0.049 4 5.00 0.800 0.029 6 1/05/05 8:00 0.043 5 3.00 0.667 0.051 3 1/18/06 21:00 0.029 6 2.00 0.500 0.043 5 11/24/06 4:00 0.018 7 1.30 0.231 0.084 1 1/09/08 9:00 0.002 8 1.10 0.091 Computed Peaks 0.078 50.00 0.980 Developed Peaks based on new impervious modeled as 50% "Till Grass" Flow Frequency Analysis Time Series File:dev3.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- -----Flow Frequency Analysis------- Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prob (CFS ) ( CFS ) Period 0.091 4 2/09/01 15:00 0.187 1 100.00 0.990 0.059 6 1/05/02 16:00 0.107 2 25.00 0.960 0.107 2 2/27/03 7:00 0.097 3 10.00 0.900 0.047 8 8/26/04 2:00 0.091 4 5.00 0.800 0.059 7 10/28/04 16:00 0.089 5 3.00 0.667 0.097 3 1/18/06 16:00 0.059 6 2.00 0.500 0.089 5 11/24/06 3:00 0.059 7 1.30 0.231 0.187 1 1/09/08 6:00 0.047 8 1.10 0.091 Computed Peaks 0.160 50.00 0.980 Parking Improvements - Mary Olson Farm June 17, 2009 APPENDIX D -Rain Garden/Bio-Retention Facility Calculations Parking Improvements -Mary Olson Farm June 17, 2009 Bio-Retention Sizing Calculations Total Area of Impervious: 14550 SF Volume of Storage Required: 0.25 feet/SF Storage Volume Required: 3638 cf Bio-Retention Pond Volume Calculation (as designed) Base Area Top Area Total Elev. 53.0 Elev. 53.5 Average Volume Description (sf) (sf) Area (sf) Depth (ft) (cf) Pond Area A (north) 774 941 857.5 0.5 429 Area B (middle) 5517 6409 5963 0.5 2982 Area C (south} 497 693 595 0.5 298 Total 3708 Parking Improvements -Mary Olson Farm June 17, 2009 Mary Olson Farm -Parking and Paths Bio-Retention Overflow Weir Sizing Calculations WR Consulting, Inc. June 12, 2009 Bio-Retention Facility Outfall: Peak Discharge Rate (100yr): 0.187 cfs Size Overflow Weir Spillway: 0.187 cfs For 3:l slope on ends: QZOO = 3.21(L * H ^3/2 + 2.4 * H "5/2) L= 40 f t H= 0.013 ft QZOO = 0.19 cf s Check Velocity: L= 40 f t H= 0.013 ft QZOO = 0.19 cfs (Peak Pond Discharge) A=L*H= 0.52 (neglect side slope on spillway) V1oo=Qloo/A 0.366;fps PerTable 4.4.1A, Channel Protection - Vel. Less than 5fps: Grass Lining 0~ Parking Improvements -Mary Olson Farm June 17, 2009 APPENDIX E -Plans Parking Improvements -Mary Olson Farm June 17, 2009 APPENDIX F -Bond Quantities Worksheet Parking Improvements -Mary Olson Farm June 17, 2009 Exhibit 15 Archaeological Testing Permit lie vie: r'~~~r ~pi~cn~ ~~~~~a~rc~r~~ 0l~1D~~ u,~,~~ ~~'~~~iar~E ar~~~~~~1a~i~~ ~ ~~~rt~~d ire V~~ Nar~~ o ~p~im~ ~ i~~~~~y ~ a-~pp~~n~ l~~li~ian: P#~i ~g~~v~, ~~~e ivy gum ~u~y F~y~n ~~~i~ DTI, inc. ~ ~r~ VU~ 8~~~ QUO ~ ~v~u ~II#, ~ ~~,1iIfA ~ ~~~y1R~~~~.Y y►.y~/R~~ ~y~J~~ ~A~~A~A~R AA~~A~1TF iy~~ ~ ~71i ~A~A~Y #YY1V i~~~ i ~M + f ~Y Y~ V ~ ~MM ~~IYW~ F ~ ~~~M! 1I~ 4~ ~u~y ~ , ~~~r ~ , zap " ~ ~~v~~~n ~r~~a~~ ~Yg. ~~in, ~ ~a~r~r, t.}: u~r~y! tin ~apo~d ~~fi~ far n~~si end ~p~~~~g; c~l~u~~ ra~r~ ~~c~i~ ~p~ v~#I~ ~ ~~prd by f~~'I~ i~in ~ day ~r ~~~~v~~r~ car~~l~ion. ~~v~v~ ~y ~~~ri~~ vr~~r, f~n~! r~pa ~y v~~l~ t~ ~~r~c~a ~~av~ i~~i~ ~ ~ ~~~i~n o ~r An~~~~: N`~~, ~ Ave~u~ ~ ~p~ U~ X81 ~F +~~~~~~F~ f•~~~ ~ ~~Y~AI R1F IiRY~I~Y~I~~! ~V MM*~~ ~~1/~M f 1YR~~~ ~YR ~~~1 ~~~G tV~ 1~fI~~~ L F ~~y h~ ju~idii~n ~Vr ~n~ r~hiC~ I~B i~ fora#~d ~ur~, ~~y, ~D~ s~a~e, ~~y o Abu 1il~i~~ hu~~n ~n~~n b r~~~~~~? Y ~ ~ d~ ~ ~xp~~ h~u~ ~e~n ~ ~~out~~d r~~~ ~s~in~. ~ nod d ~ ~ t , / d / ~ ~ ~##4 ~Lw ~S~I~~~~ ,.emu ~ ~ I f ~ ARCHAEOLOGICAL TESTING PERMIT FOR THE MARY OLSON FARM, AUBURN, WASHINGTON City of Auburn White River Valley Museum 918 H Street SE Auburn WA 98002 ENTRIX, Inc. 200 First Avenue West, Suite 500 Seattle, WA 98179 June 72, 2009 ARCHAEOLOGICAL TESTING PERMIT FOR THE MARY OLSON FARM, AUBURN, WASHINGTON Prepared By: Patricia Cosgrove, Museum and Farm Director City of Auburn White River Valley Museum 918 H Street SE Auburn WA 98002 Lucy Flynn Zuccotti, Senior Archaeologist Jennifer M. Ferris, Archaeologist Don Craig, Archaeologist Kimberly Demuth, Technical Director Cultural Resources Management ENTRIX, Inc. 200 First Avenue West, Suite 500 Seattle, WA 98119 2 (a) Background Information ENTRIX, Inc. was contracted by Patricia Cosgrove of the White River Valley Museum to assist with cultural resources at site 45K1655 the Mary Olson Farm, 28728 Green River Road in the City of Auburn, Washington, Township 22 N, Section 32, Range 5 E (Site) (Figure 1). The site is listed on the National Register of Historic Places (NRHP} under Criterion A., and has been designated a King County Historic Landmark. For the purposes of this permit, the responsible parties will be known as ENTRIX and Museum. Prehistory The earliest known occupations in western Washington, termed Paleo-Indian, are evidenced by the appearance of large, fluted projectile points dating to approximately 12,000 BP (Carlson 1990}. In western Washington, sites from this period are ephemeral and few. However, rising ocean levels have inundated many coastal sites. The Archaic period dates from approximately 12,500 to 5,600 BP (Ames and Maschner 1999). Pacific Northwest Archaic sites, similar to Paleo-Indian sites, are ephemeral and often lacking in faunal remains. Assemblages of this period are typically composed of large, stemmed lanceolate projectile points and bifaces. In addition, a microblade (small, thin blades) tradition is present in the Pacific Northwest Archaic assemblages during this period (Ames and Maschner 1999}. Pacific period sites date from approximately 5,600 BP to European contact (AD 1775). The period ends at the introduction of smallpox to the region. This time period included intense economic, social, and political changes on the Pacific Northwest Coast. Complex subsistence patterns, large village settlements, and social stratification are all indications of the profound cultural development of the area. The approximately 6,200 years of the Pacific period are subdivided into the Early Pacific, Middle Pacific, and Late Pacific periods. The Early Pacific period (5,600 to 3,500 BP) saw a stabilization of sea levels to current levels, leading to an increase in the use of littoral resources and the appearance of large shell middens. It was also marked by general increase in the use of marine resources, the appearance of human burials in middens and cemeteries, a diversification in subsistence activities, the disappearance of microblade technology, and the increased use of bone, antler, and ground-stone tools. Major developments also include the appearance of ground-stone Celts (adze blades), which indicate an increase in woodworking. There is also a proliferation in chipped-stone tool forms and styles. The Middle Pacific period (3,500 to 1,500 BP) displays major development and change. The appearance of plank houses and astorage-based economy are indicators of long- term settlement. There is an intensification of fishing with the appearance of wooden fish weirs and girdledldrilled net sinkers. There are technological advances in bone and antler tools, and the advancement of harpoon construction. Late Pacific period (1,500 BP to AD 1775} developments are represented by the appearance of heavy-duty woodworking tools, such as large adzes and heavy pile drivers, an overall decline in the use of chipped-stone tools, an escalation in warfare, and a shift in funerary ritual/burial activities from midden burials to internment, cremation, and exposure (Ames and Maschner 1999). 'q yd z f ~ + ; ~K-R a`~ ~ ' ~ -fj t ry , L . . I 3.-`~ t . .i~ y _ 1 j* ~ ✓ , ~ ~t F ~i. . ~ ~ ~ a r r ~ p' ~ ~ a, ~a- E ~r;~~ .c~ 1 '"4 xt nr'Y r r ' S r s ; ~ . I ~ ~d' . ~t ~ d l~' ~ ` 8j ~t i" t £ p ~ : J ~u ~ ,y.`S~, • t 'r^ - ~ ~ z k r i ~rs5y3`3` ~r~ `b'e y:'41ri .u~ ~ n a ~ ~ ~ x~ f d S,U ~i Y ~ . JC~t ~ f Sl ,Y dKl. 4. ~ ti ~ ; ~ J ~ R , t 7 'i.Y Y~ F e.,., ?T r,' S. i v ~T„~v' G ~ • t t {a _ !f', e,i tt t „ ~f y v 1 Q 1,•1 : 3.°1 ~ Y s~~. . . ' s 4 R~ -~v A 5 . : . g,sr-~ ' } 4 t y. ~ ite Ar~a x vua' - R f 4Znd ~ s }i 3 ' ~,c 7 : : i ~S s t z s^k ~ F ~ L r .r F _ .v<S y t t t ~ ~ :tr~ . a f " Y k -•t ~ ~ ...a~ ~ ~ ~g,°~ n > . . ~ FF q ~ S } ~ ' .t ^s Q L l ~ My,f• 9 .LL~ ~gd,r u Jk'~1 a J r P, Tt i E(VTR1X 'teArea rMARYLSON FARM" sao t;ooo ~;.z Figure 1: Mary Olson Farm Vicinity ~ 2 Ethnology The Site area is located in the historical land use area for the Southern Coast Salish peoples. Southern Coast Salish refers to two language groups, Lushootseed and Twana. Tribes in the vicinity of the project area used the Southern Lushootseed dialect. Speakers of the Southern Lushootseed dialect included the Snoqualmie, Suquamish, Duwamish, Puyallup, Nisqually, and Squaxin (Suttles and Lane 1990). Large permanent winter settlements were located along lower drainages, principally: Elliot Bay; Lake Washington; Lake Union; Lake Sammamish; the Cedar, Black (presently nonexistent}, Duwamish, White (present-day Green) Rivers; and along marine shores (Haeberlin and Gunther 1930). Smaller groups formed in the spring and moved to seasonal camps until autumn in order to hunt, fish, and collect seasonally available resources. Most of these groups subsisted mainly on aquatic resources such as fishes, shellfish, and marine mammals. Terrestrial mammals, such as mule deer, elk, black bear, mountain goat, groundhog, and rabbit, as well as waterfowl, completed their diets to varying degrees based on specific village locations (Haeberlin and Gunther 1930). Plant resources used by all of these groups included nuts, various roots, tubers, sprouts, and berries (Suttles and Lane 1990). Although used to a varying degree based on site- specificresource availability, these plant resources were a key element to the diet. Winter housing consisted of large, multi-family longhouses constructed of cedar planks. Sleeping platforms lined the walls and storage shelves, for winter supplies, were typically located on the walls above these sleeping platforms. Fires were located near the sides and the central area was used as a passageway. Summer houses were constructed for short-term occupation and were typically tipi or square-shaped. Horizontally placed mats were placed over a frame of poles to create the tipi, while square houses were a lean-to type form with mats placed over a wooden structure with a gabled or single pitch roof. Short-term occupation mountain camps were made using a similar square form, but covered with boughs of various tree species (Haeberlin and Gunther 1930}. South Coast Salish held intervillage giveaways, or potlatches, in spring or summer, when food was plentiful, as shows of wealth power. The sponsor of the potlatch would invite leading men from other villages to events that included games, contests, songs, and dance. These events, which would last for several days, would conclude with the sponsor distributing gifts to his guests as an indication of his wealth. The potlatch and spirit quests were important activities in the pursuit of spiritual power (Suttles and Lane 1990). Chipped and ground stone tools, along with bone and antler, comprised the tool kit. A variety of source material was used to make stone tools. Chipped stone tools were used as adzes, knives, projectile points, and scrapers while ground stone tools were used for food processing. Bone was often used to make fishing hooks. Various woods and their derivatives were also used to form tool handles, digging sticks, clothing, weaving looms, canoes, netting, and baskets, among other products. A wide range of vegetative species was used to make baskets, decorative items, and other daily objects (Haeberlin and Gunther 1930). Several historically documented Native American places were located in the Site area vicinity (non-English names are Lutshootseed): 3 1. Winter houses at Jeff's farm -reported plank houses at Dick Jeff's farm downstream from the former confluence of the White and Green Rivers in Auburn (King County Cultural Resource GIS Database 2008a, 2008b}. 2. xoxwa'daip -James Crow place east of the [Green] river above Kent (King County Cultural Resources Protection Project GIS Database 2008a, 2008c; Waterman et al 2001). 3. stExwa'btsali - "arrangement for pulling something" for a place on the steep hillside east of the [Green] river. The term refers to a skid road, suggesting that point planks andlor logs were dragged down from the plateau at this location (King County Cultural Resources Protection Project GIS Database 2008a, 20084; Waterman et al 2001). 4. tsaxe'lo:tsid -the mouth of the creek on Mr. King's land, below the bridge on Green River above the Dick Jeff place (see above). There was formerly an Indian fish weir at this location (King County Cultural Resources Protection Project GIS Database 2008a, 2008e; Waterman et al 2001}. 5. sbER - "a ball" for a level flat on the west side of the [Green] river. The name comes from the Indian ball game ("shinny") which was played at this location. The place was also known as Sepo'sadi, "where it is thrown about" (King County Cultural Resources Protection Project GIS Database 2008a, 2008f; Waterman et al 2001 6. bst13ai'yu - "wolf" for a rock midway on the hillside east of the [Green] river. There was formerly a rock on the hillside in the form of a crouching wolf. The wolves ran away after hearing that Xade (the Transformer) was coming. The last one stayed lingering, watching, and "hollering" across the river and was turned to stone (King County Cultural Resources Protection Project GIS Database 2008a, 2008g; Waterman et al 2001). t3i'IakwEts - "strawberries" for the site of the Brandon (Brannan} place (King County Cultural Resources Protection Project GIS Database 2008a, 2008h; Waterman et al 2001 History Euro-American settlement of the Site area vicinity Green River Valley (formerly White River Valley} began around the creation of the Washington Territory in 1851. Around this time, a crude military road passed from Fort Steilacoom to Fort Walla Walla through present-day Auburn and by 1853, wagon trains were using the trail through the Naches Pass. The 1855 Indian treaties led to increased Euro-American settlement in the area and most of the river bottomlands had been homesteaded by midway through the next decade (Lentz 2000; Stein 1999). Most of the early agrarian activity in the area was subsistence farming, focused on small-scale animal husbandry, fruit orchards, potatoes, wheat, oats, hay, barley, among other crops. Flat-bottomed steamboats navigated portions of the area's rivers and most families owned personal canoes. Families living along the east side of the Green River used a road now called the Green River Road. The Green River Road runs along the west edge of the Site. Hops, well-suited for cultivation in the area's soil and climate, became a major cash crop in the 1870s and quickly turned into the backbone of the area's economy (Lentz 2000; Stein 1999). 4 In 1883, a branch of the Northern Pacific Railroad was constructed in the historic White River Valley and led to the establishment of many small towns and helped the expansion of Auburn (Stein 1999). An insect infestation in 1890 and a nationwide financial crisis of 1893 caused a collapse in the hops market and many local hops farms were divided and sold as small dairy farms. In the 1880s and 1890s several shingle mills and sawmills were operating along the White and Green Rivers, utilizing the rivers for transport. The area was heavily logged during this period and by 1897 much of the Valley had been logged and second growth was already underway (Lentz 2000). Dairy farming and related hay cultivation had become the principal agricultural activities in the Valley by the turn of the 19t" century. Constructed in 1913 to control flooding, a diversion dam permanently rerouted the White River southward and allowed the Green River (a former tributary to the White River) to flow in the old White River channel. The 1920s and 1930s saw the development of the berry growing and intensive truck farming associated with the expanded Tacoma and Seattle urban markets. Truck farming and dairying remained important agricultural activities through the early 1960s (Lentz 2000). Since the 1960s, the Valley has changed dramatically, both physically and economically. Replacing farming, heavy industry, service, and retailing have become the area's principal economic activities. The Boeing Airplane Company, with plants in Auburn and Kent, is a major employer to Valley (and non-Valley) residents. To accommodate this growth, extensive housing and commercial development has occurred since the 1960s (Lentz 2000; Stein 1999). Previous Work The Mary Olson Farm (site 45KI655) was listed on the NRHP under Criterion A in 2001 (Lentz 2000). The farmstead, dating to 1879, includes 60 acres of land comprised of a hayfield, wooded uplands, Olson Creek, and an open meadow with an orchard. The farm was established by Alford Olson, a Swedish immigrant, and was subsequently owned and occupied by his family for over 100 years. Over time, the Olson family's agrarian pursuits included fruit orchards (apple, cherry, pear, and plum), vegetable gardens, hops, dairy, veal production, logging, and fishing (Lentz 2000). Historic resources at the site include: barn (1897); house (1902); garage (c. 1920); weaving shed (c. 1922); smokehouse (date unknown); chicken coop (pre-1922); fencing (date unknown); wagon road remnants (pre-1897); entrance lane (pre-1937); orchard (pre- 1897); fields (c. 1900); and household and farming refuse (Lentz 2000). The Mary Olson Farm is a rare surviving example of the Green River valley's agricultural heritage dating from 1879. The Farm was purchased by the City of Auburn in 1994, designated a City of Auburn Landmark in 2001 (Lentz 2000), and is currently owned by the White River Valley Museum. There have been three previous cultural resources studies within 1 mile (1.61 km) of the project area, as discussed below. Two of these were undertaken within the boundaries of the Farm, and the third was located west of the Farm across the Green River. The first study of the Farm involved an archaeological and traditional cultural places assessment conducted by Larson Anthropological Archaeological Services, Ltd. (LAAS) for the White River Valley Museum in 2003 (Kaehler et al. 2004). The LAAS study included pedestrian survey and shovel probe testing at the Mary Olson Farm property in preparation for site rehabilitation (Kaehler 2003; Kaehler et al. 2004). Shovel probes were excavated to a maximum depth of 63 cm below ground surface, and all sediments were screened through 1/8-in hardware cloth (Kaehler et al. 2004). LAAS identified and 5 recorded previously undocumented subsurface historic archaeological resources consisting of household debris. The debris included broken ceramics, canning jar glass, metal artifacts, mammal bones, and a cartridge casing (Kaehler 2003). Their findings were submitted as an addendum to the site record 45K1655 (Kaehler 2003), and a historic archaeological site boundary was documented to the west of the Mary Olson Farm house (see Figure 2). No prehistoric cultural materials were observed during the 2003 LAAS survey. In 2008, ENTRIX conducted a pedestrian and subsurface survey near Olson Creek, south of the Mary Olson farm driveway, in response to proposed creek restoration activities by King County Roads Services Division (ENTRIX 2008}. ENTRIX placed 12 shovel probes every ten meters along both banks of Olson Creek (see Figure 4). Shovel probes were excavated to a maximum depth of 100 cm and few were augured to depths of 180 cm maximum, although many probes were terminated at shallower elevations due to unconsolidated alluvial sediments. All sediments were screened through 1/4-in hardware cloth. No prehistoric or historic cultural materials were observed during the 2008 ENTRIX subsurface survey. BOAS, Inc. completed a pedestrian survey for the Green River Bike Trail in 1995 (Stallings 1995). The Green River Bike Trail survey encompassed a stretch of land along the west side of the Green River between Brannan Park in Auburn and 86t" Avenue South in Kent. A portion of this study was directly west of the Mary Olson Farm across the Green River, and included subsurface testing within the approximate local of tsaxe'lo:tsid (see description in Ethnology section above). BOAS excavated five shovel probes to maximum depths of 90 cm below ground surface within the boundaries of tsaxe'lo:tsid. No cultural materials were observed during the subsurface survey (Stallings 1995}. BOAS observed sediments (sand and silt) characteristic of flood deposits, and reported that if any archaeological materials were present, they were likely buried below these flood deposits (Stallings 1995). Figure 3 shows the locations of positive shovel probes and the current site 45K1655 boundaries. Figure 4 shows locations of negative shovel probes from the LAAS (2003} and ENTRIX (2008} subsurface surveys. Figure 5 shows the locations of proposed future ground disturbing activities. Data Gaps The justifications for listing of the Mary Olson Farm on the NRHP are all related to the historic buildings and above-ground cultural materials. Very little is known about the potential archaeological materials that may convey information associated with the daily activities and disposal practices of the Olson family. LAAS identified a subsurface archaeological site within the historic property (Kaehler 2003; Kaehler et al. 2004), but to date, this subsurface archaeological site has not been formally tested. Data gleaned from the subsurface historic archaeological site could inform not only of the Olson family's daily routine, agrarian pursuits, dietary consumption, and artistic interests, but also of the general consumer habits of the Green River Valley dating from 1879. The Farm was owned by the Olson family for over 90 years, spanning changes in familial agrarian pursuits that reflect regional changes that occurred in the same time frames. Much of the surrounding valley has been modified into residential, industrial, and commercial zones, leaving the Mary Olson Farm as one the few reminders of the region's agrarian ancestry. 6 • t, f ~~~•1 ~ ? rR ~~~+~5~~~~~~~` ' ~ A . ~ ~ ~ j `~'!~✓,,~ti.~ i , ~'T fS~-' ~B~'~'P 4; p~~,~/~"~Gfs?Y . ~`h , n ~ e ~~~g~ G ir~t~ *a,: .~fW e ; ryrir •~,~y~~,,+~~~ ~ , ~^f y. yy ' a t a y,~`d'*a a'~~~Alf.'• + ~ ~ ~ Gd~i4'~ }'h~A , . . • t" gd~ ' w :.t; ~a~,°e`x~~r'`;'~r~'~ir°~ ~ ~ K;~ pn 'Ir ~ a, . 'r, . ✓ ~ .,i r h ~ ~ f. Z~'~3r r rr .aC i~J,~ 's'e 5~~~~~~ rs'''~."~~~✓'~,,~' _ y x ~ *'r 7. ~ ~ t"` = ¢Aw ~.k Wdry1 N.~ Pe 44 z.s 1 ~ r ;~•y jr; ~ - ~ ~C✓ ~d~~, <.r-Zt ~r ~ .•z,+<'"'-~~&S'~ ~ '~c~~c"°~ ~ rYC~` a =y`t ' .^'y'~ i . ~r ~~'z~..r~F~`'^. YLy.. ~1°. Nr; . . i '.r Z s f a,E, »,i , r a "z:~s j° ~r°. ~ ~~~~.t~ * . >:.v~ • . , . _ F'~seK5~ ~~~~'~~`~„~~'..~r+ ~~~"y~+r.~ T _ u.r.~~Y~tJ'ir.''~ e .w...,,~'rh~'~„.*'c' 8~.a.:~~' •x xy 'p h:..~e9~' wa. t Archaeological S~te, Boundary.. E N T Ft 12, ~ . s ' ° ~ MARY OI_SON FARM ~ , ite Area = ' O, 25 :56 iO6 Stnu~itre ~iSSWPwArd~e-°-bgwa!Dep°sfts ~ Figure 2: Current Archaeological Site Boundary 7 _ _ _ - - ` S Y _r y~ • ~ ~,ei Y . ~ ~ •5~ j . A . I ~ ~-T i.t p~i~~~ iK. . ~ R ' ~ . i •f+. 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LAAS Negadv~e Shwel Rrobe _ a • . . ~ . . .,A`e ENTRtX ~ShovalPrdtie 3~!V•~_ _ - ~ Figure 4: Negative Shovel Probes 9 ~ ~`4)''i,Ri t~~•'S ,7f~ ~ ~ ~ q ~ F , , i i ~ ~ ~ ~ -~J ♦ li. ~',3 y~L~,;; ~~'r ~ ~ ~ ;,•~"+j•. ~ ~ ~ ~ ~ ~ 1n • ~ '10 i d ~e _r yr ~ ,i•: ~4 ~ e2 ~ ~ ~ ~ ~ ~V~ v '1 ! . _"''~d, .^"'~,,.i- ~ ~ Y ...7 LZ ~ 4 6 ~ ~ v~ .i~-.-e~__ . -"r~,._ •~'+```"y~ . J;ISi A..'R ~ tC iL~~. , . ~ ~ _ • , ~ ~iti'~~ I ~ !~~--°•yr.,. ~ • ~,yf, ; " ^ _ r,.: s j r Ot \ ~ 1 ''/C Az a" r- ~ j L... '\;'•~,ti Q S 1~ . r J '~,~,'.~i' ~ . t ~ 7 i T - j•~~ ~ ~ ~XI'I r `1' ~r' r ~ ~r+' ~ Y, a~ ;J ~ : _ .Q ~ !4\~iv~\p` ' ~f ~ • `,`~•O•.`, '•,l i,`,~ t ~ ! ~ '~F+ ~,~,~~,~ti ~ ~ ~,,,/-.ti - • y' ' ~ ~ ~``~t.~, o \i`'~,``+.~.°.,~`~~fi ~ r'-.. O •-J• 4 ti 3 + /f•{~~Q p~..-• ,al~~~'.s; w,..- O 1~„.~.^.:.~~~~~ a+°~1 ~ . /~!ri - 11~ ~ .ij ~ ` ' ~ - ! ~ ~ ~i ~ F L !i ' J 3 M~"~~~`~.C~ t- '`'.w;~~ t . , + I LL LO ,5^R _r."`__~*Z`,~~,~'~4ti•~ ~ _-1 =--s z.:.:.,'?~a.' hy~, ~ Y ~``•`\\\~4.~,ti..'•„~a-\,'\"^~ "'ii`'•'+_' ti. ~ K, Y•Y,• :~.._.::\'~wT~ ~ ~`~1+..,~'.M1 ~ = VI LJ. . '2.. \ ` +:i~'~ - r.~.\~::,.: ~ ~ yytt ~ \ \ ' ~y '',1;-' -s ~~,~T.~. A. . k .~`i-'s-'^'L.Y `"i~wj ~ Vr'ti'Y- 5~,'~ ` ~ 1 ~ }GSY~ `.e'~~ ~5~.; ..4'ri i --.-y-Y•a" Ji- f, j r , ::~h " ~ 's~~v~- . ~ //Jf i j : :-~r' ' r/ : ; r : t~if , i :!:f % ~ -a~` : ~a~~'f.~''~. ~ .J;fr'.~=~`+•_.: ,1, J~ ~t . /,'::.':':.~~.::~.1~:~::~:.::.::::~'r J"l!%!' "r_'~~'"`A✓~I~. ~ if r:!. :''...~`~1 ° .1~..41` \x~~ < Ky.ti:::. ~:r ;:i%=~!'.:%":'' ' % , : ~~~.'Y~___"' _ Jyltli• l~y' : ~ . ,.a , . : •.4~ . . 5i'',J;,,,'_y .L ss ,i ,,.r, "'%-o.,,•- ,4 ' ~ ~ ` f ~„~~v~--i ~ • - :r~;r =*:i: '="~x - /~j,~~ ~ K:Tii~h ' / _f1:^ "4 ~r~J'` f."' . ~ ~ ~ % C .r : ~ _'-•,'Y ~t ,~..-9` . . ~ - - - - l'-' _ •i~ _ - -'-~,:i'~-~= - • r' ~ - . ~ ' _ . i~~:~.`\c - -i ' . . ^ . . - ~ - _ :,+Y-.~.-- _ _ _ - S ` ~ - . _ :`i.Y r . _ - _ ' , Very little is known archaeologically of this area. One Stkamish winter village was reported one mile northwest of the Mary Olson Farm and one Skopamish winter village was reported 1.75 miles south of the Farm (Kaehler et al. 2004). Although the previous pedestrian and subsurface surveys did not identify any prehistoric archaeological materials within the Mary Olson Farm locale, ethnographic evidence suggests the confluence of the Green River and Olson Creek was an area of importance to Native American tribal members (ENTRIX 2008; Lentz 2000). These ethnographic references (see Ethnographic section above for discussion) imply that the area was used by indigenous populations for subsistence measures, including fishing. As such, stratified archaeological cultural deposits may be present in the vicinity of Olson Creek and/or the confluence of Olson Creek and the Green River. If prehistoric archaeological materials are present in this area, they are likely beneath thick deposits of flood sediments, making any observation of them difficult. However, discovery of prehistoric archaeological deposits would expand the current knowledge of subsistence and habitation strategies of indigenous populations on Olson Creek and the Green River. (b) Nature and Extent of Work Proposed Farm Renovation The project area entails many portions of the Mary Olson Farm property (Figure 5). The proposed project includes multiple aspects that are all related to developing the Mary Olson Farm into a site for recreation (such as pedestrian trails), education (such as school camp activities, environmental learning opportunities, and art classes), and preservation (maintaining the historic aspects, site interpretation) purposes (Boyle- Wagoner Architects 2000). Twenty of these aspects include subsurface disturbance and have the potential to adversely affect known and unknown archaeological resources. These aspects are briefly discussed below, as well as the parking lot, which will be located north of the Mary Olson Farm on city-owned property. Please refer to the attached appendices for visual displays and plans of the proposed work discussed below, including the Master Plan for the Olson Farm (Appendix A), architectural plans (Appendix B), fence details (Appendix C), and planting plan and layout (Appendix D). 1. Visitor's Entry a. The visitor's entry will be located on the western edge of the Farm, at the main historic driveway entry. This area will serve as a drop-off location for those who do not wish to walk over the hillside from the north meadow parking lot along the wagon road. The existing turn-out will be widened and will require minimal grading and the addition of gravel to level and enhance the walking surface. The approximate size of the entry will be 90 feet (27.4 m) N/S on the western edge and taper to 15 feet (4.6 m) N/S on the eastern edge. The center width will be approximately 60 feet (18.3 m) E/W and the northern and southern portions of the entry area will be approximately 15 feet (4.6 m) E/W. b. A ticket booth, measuring approximately 15 feet by 15 feet (4.6 m x 4.6 m), will be installed about 30 feet (9.1 m) east of the turnout. Associated signage, lighting, and bicycle racks will be installed at the entry location in the vicinity of the ticket booth. The signage will be mounted on fencing (discussed below) and on the ticket booth. Electrical power will be brought to the ticket booth from a central box, via underground trenching (discussed below). 2. Orchard The orchard area, located just NE of the visitors entry and west of the house, will be revitalized. Proposed work includes tree removal and new tree planting. Approximately seven trees will be planted within the orchard proper, with an additional two trees planted just east of the orchard's eastern boundary and fence line (discussed below). The orchard will be fully fenced and two entrances will be created with gates on the SE and NE sections of the surrounding fence (discussed below). Subsurface disturbance will occur during tree planting where the diameter of the hole will be approximately 2.5 feet (0.76 m) and minimum depth of 3 feet (0.9 m). A 3 foot (0.9 m) diameter mulch circle will be provided for around trees. 3. House Renovations will occur inside the house, which will not have any subsurface impact. The north side of the farm house will be re-graded to provide for level access to the back porch and building. The grading will occur within the top 5 inches (0.1 m) of the ground surface. The house will also have new utility, power and water, waste and drainage lines connected (discussed below). 4. Vegetable Garden A vegetable garden will be planted approximately 15 feet (4.6 m) west of the farm house, and will measure approximately 35 feet (10 m) by 15 feet (4.6 m). Invasive species, such as blackberry, will be removed. Historically accurate vegetables and fruits will then be planted, which will cause approximately 1 foot deep ground disturbance. 5. Flower Gardens Two small flower garden beds will be replanted around the west (35 feet/10 m long) and south (45 feet/13.7 m long) perimeters of the house, extending approximately 5 feet (1.5 m) from the side of the house. A third flower garden will be created in the area north of the house within the backyard. This north flower garden is an L-shaped bed that measures approximately 45 feet (13.7 m) along both long axes and approximately 10 feet (3.1 m) wide. One tree will be planted in the NE corner of the northern flower bed, and a second tree will be planted 30 feet (9.1 m) NE of the NE corner of the northern flower bed. These trees will be planted in a manner similar to those described in the Orchard section above. The creation of the flower beds will require digging approximately 1 foot (0.3 m) into sediments. The proposed flower beds will be in areas that were historically used for gardens by the Olson family. 6. Existing Driveway The existing driveway will be realigned SE of the house allow for the placement of underground utility lines (discussed below). This alignment will move the road 5 feet (1.5 m) east of its current location for approximately 45 feet (13.7 m). Pathways Pedestrian pathways will be developed to provide safe walking for museum visitors and will meet ADA standards. There will be three sections of pathways including: a) pathway between the garage and the barn; b) a pathway leading from the farm house to the weaving house and the outhouse and around the vegetable garden; and c) a pathway 2 leading to the front porch of the farm house (located on south side of the building). These pathways are inspired by historic and existing informal paths. The pathways will vary in width, ranging from 20 feet (6.1 m) at their widest to 7 feet (2.1 m) at their narrowest (see Appendix B). The pathways will be constructed on 95% compacted sub-fill topped by 4" (0.1 m) of compacted gravel flush to the adjacent grass. Subsurface disturbance may occur from grading and/or compacting activities. Concrete paving may be used to make flush the crushed rock surface, which would have a depth of approximately 6" (0.15 m). The house walkway will be bordered by 4"x6" timber edging, where two will be stacked atop one another and set lengthwise into the ground approximately 9" (0.2 m) deep. #4 rebar will be predrilled into the timber edging to achieve a maximum subsurface depth of 1'6" (0.5 m). 8. Weaving Shed Power lines will be connected to the weaving shed to provide for heating, power, and lighting (discussed below). Gravel will be added to facilitate ADA access. 9. Garage Public Restrooms The south portion of the garage will be converted into ADA-compliant public restrooms. Subsurface disturbance would occur during foundation work and plumbing installation. The ground will be graded for a new concrete foundation and on-grade slab. New utility, power and water, waste and drainage lines, heating/ventilation, plumbing, electrical, power, and lightning will be installed (discussed below). 10. ADA Parking Stalls Three ADA parking stalls will be created directly east of the garage. Ground disturbance will be minimal and compacted gravel will be placed atop the ground surface. The parking area measures 40 feet (12.2 m) NW/SE by 30 feet (9.2 m) NE/SW. The entry from the existing driveway to the parking area is 10 feet (3.1 m) wide by 30 feet (9.2 m) long. 11. Hops Vine Display A hops vine garden will be planted in front of the existing caretaker's trailer to be used as a display. The garden will measure approximately 60 feet (18.3 m) N/S by 35 feet (10.7 m) E/W. Approximately 25 cedar posts will be placed approximately 3 feet (0.9 m) into the ground to act as supports for the vines. 12. Caretaker's Trailer The existing caretaker's trailer will be screened from view with a recreated historic wood fence running N/S from the SW corner of the barn to the orchard fence. Native species will be planted around the fence and mobile home to visually integrate them with the forested hillside and discourage invasive species. Planting beds will be created to the west, north, and east of the trailer. These will require digging approximately 1 foot (0.3 m) into sediments. The area to the west of the trailer measures approximately 15 feet (4.6 m) E/W by 120 feet (36.6 m) N/S, the northern portion measures approximately 35 feet (10.7 m) E/W by 120 feet (36.6 m) N/S, and the eastern portion measures approximately 15 feet (4.6 m) E/W by 60 feet (18.3 m) N/S. 13. Barn 3 Electrical and low-voltage power and lighting will be brought to the barn and installed (discussed below). 14. Fences All fence lines are inspired by historic fences that are evidenced in historic photographs, maps orfrom physical remains. a. House Yard A fence will be placed around the house yard, measuring approximately 19 feet (5.8 m) NEISW by approximately 22 feet (6.7 m) SEINW. The fence will consist of 6"x6" split cedar upright posts with a 2"x4" top rail and 2"x4" cross rail and contain 4" triangular shaped wire. The posts will be placed every 6 feet (1.8 m) and set 2 feet (0.6 m) into the ground. The house yard fence will contain a single gate on the southern edge of the house yard. The gate will consist of two 6"x6" split cedar posts placed 5 feet (1.5 m) apart and set 1.5 feet (0.5 m} into concrete footings. There will be two concrete footings, each measuring 2'x2'x2'. Wire mesh will used with cross rails to finish the gates. b. Orchard Fence A fence will be placed around the orchard in a roughly rectangular shape, measuring approximately 105 feet (32 m) NE/SW by 38 feet (11.6m) NWISE at its widest point. The orchard fence will consist of 6"x6" split cedar posts and 2"x4" wire mesh with barbed wire set 10" above the tops of the posts. Posts will be placed every 9 feet to 9'8" (2.7- 2.9 m} and set 2'6" (0.7 m} into the ground. Two gates will be placed along the Orchard Fence, including a double gate in south end and a single gate in the north end. The gates will consist of 8"x8" split cedar posts set 1.5 feet (0.5 m) into concrete footings. There will be two concrete footings for each gate, each measuring 2'x2'x2'. The cedar posts will be spaced 20 feet (6.1 m) apart for the double gate and 10 feet (3.1) apart for the single gate. Wire mesh will used with cross rails to finish the gates. c. Caretaker's Trailer to Barn A split rail fence consisting of 6"x6" split cedar posts and 2"x6" cedar board cross rails will be placed between the caretaker's trailer and the barn, measuring approximately 30 feet (9.1 m) NE/SW in length. The posts will be placed every 6 feet (1.8 m} and set 2 feet (0.6 m) into the ground. The caretaker's trailer to barn fence will contain a single gate on the southern edge of the house yard. The gate will consist of two 6"x6" split cedar posts placed 4 feet (1.2 m} apart and set 1.5 feet (0.5 m) into concrete footings. There will be two concrete footings, each measuring 2'x2'x2'. Three horizontal rails will be used to finish the gate. d. Pasture Fence A split rail fence will be placed around approximately 400 linear feet (121.9 m} of the pasture area adjacent to the NE corner of the barn and NE of the garage. e. Perimeter Fence A metal T post and barbed wire fence will extend along the Green River Road, following the perimeter of the farm for security. 4 f. South Meadow Fence A metal T post and mesh wire fence will be built around the south meadow, roughly following the inside arch of the wagon road along the east and south side. The fence will follow the line of the stream to the north and the Green River Road to the west. 15. C ree k Interpretive signs will be mounted close to the stream at strategic viewing locations. These signs will interpret such subjects as wetlands, stream ecology, smoking salmon, salmon lifecycle. Native plantings will be added as invasive species are removed throughout the stream bank area. The footings for the signs will be set 2 feet (0.6 m} into the ground. 16. Utilities To minimize visual impacts to the historic representation of the site, all utilities will be underground. All electrical panels, outlets and fixtures will be hidden from public view. a. As the Mary Olson Farm did not have power, electrical lines will be installed to connect electric power to the ticket booth, farm house, garage, garagelrestroom, weaving house, and barn. b. Water lines will also be installed. c. Telephone lines will be placed underground to provide phone service to the house, along with security service connections and Internet for the offices in the upstairs of the house. d. A security system will be installed in the weaving house, outhouse, barn, and garage. Low voltage power will be brought to them underground. e. A propane tank will be set on the ground surface just south of the caretaker's trailer. Propane will then be provided to the house via underground pipes to provide radiant floor heat. All trenching will be approximately 36 inches (0.9 m) deep and clustered to minimize the impact. All lines will be installed with a minimum of 24" (0.6 m) of cover. Appropriate historic grass mix will be spread over the filled trenches. 17. Septic and Drainage System A drain field will be created in the SW portion of the Farm property. Sewer lines from the garage restrooms and the house will link to the drain field. The trenches will measure 3 feet (0.9 m) wide. Approximately 200 linear feet (61 m) of trench will be needed for the house septic system, for a total area of 600 ft2 (54.9 m2}. Approximately 150 linear feet (45.7 m) of trench are needed for the garage restrooms, for a total area of 450 ft2 (41.1 m2). A reserve drain field will also be created that measures approximately 90 ft (27.4 m) E/W x 150 ft (45.7 m) N/S (13,500 ft211,252.18 m2). Two 1,000 gallon septic tanks will be installed side by side at the northwest side of the house to provide for the single new toilet and sink within the house and the proposed restrooms inside the garage. The tanks each measure 15'x10'x6' (4.6x3.1 x1.8 m). The 5 tanks will be placed 8 feet below the ground surface, and each excavated area will measure 16'x11'x7' (4.9x3.4x2.1 m}. The exact placement will be determined with the assistance of archaeological test probes, and all efforts will be made to place the septic tanks outside of the archaeological site boundary. 18. Interpretive Signage Interpretive phenolic powder coated signs will be installed at the parking lot (north of the Farm area), entry way, wagon road, orchard, garden, and one at each of the eight historic structures, and six on site for a total of 20. Each sign will be mounted on two powder coated metal posts that will be inserted into 2 foot (0.6 m) concrete footings. 19. South Pasture The south pasture will be developed by removing brush, minor grading to level the ground surface, hydro-seeding by patch and repair, and preparing the garden space. The wagon road will be extended along the eastern boundary of the south pasture (as discussed above). The pasture will be further developed by adding fences, gates, and signs (as discussed above). 20. Parking Lot A parking lot will be created on city-owned property approximately %4 mile north of the Mary Olson Farm. The parking area will have no impact on the archaeological site at Mary Olson Farm. Proposed Archaeological Measures Of the aforementioned twenty work aspects, very few fall within the archaeological site boundaries (see Figure 2}. However, following discussions with the DAHP, it is likely that additional archaeological artifacts related to the Mary Olson Farm may be found outside of the boundaries defined in 2003 by LAAS. Furthermore, the presence of prehistoric or ethnohistoric artifacts in the project area is possible, although these may be buried beneath flood deposited sediments. Subsurface Survey In efforts to determine the presence of historic or prehistoric archaeological subsurface materials that may extend beyond the site boundary and possible adverse effects caused by construction activity, ENTRIX proposes to conduct a subsurface survey prior to construction commencement. Up to 160 shovel probes will be placed in the project area where all subsurface disturbance will occur (described in detail below). The shovel probes will measure 50 cm (19-in) in diameter and all attempts will be made to excavate probes to depths lower than the proposed undertakings (maximum 40-in / 1 m) and into sterile sediments. A 4-inch (10 cm) closed bucket auger may be used to extend the basal depth of shovel probes (maximum depth of 2 m/ 6.56 ft). All shovel probes will be completed in 10 cm intervals. All sediments will be screened through118- inch hardware cloth and all cultural materials will be collected (see Section d for artifact inventory plan). The excavation of all probes will be recorded on excavation forms and photographs will be taken during and after excavation. A soil profile will be recorded for each of the excavated probes. The locations of all probes and test units will be recorded by GPS and on a survey map. 6 1. Visitor's Entry a. driveway entry widening -shovel probes will be placed at northern perimeter of the existing entry where the new entry way would extend beyond the current footprint (approximately 15 feet NlS by 60 feet E/1!V). Up to a maximum of 5 shovel probes would be placed in the proposed footprint. b. ticket booth -shovel probes will be placed at the location where rough grading for the on-ground slap will occur, up to a maximum of 3 shovel probes. 2. Orchard -shovel probes will be placed within the location of the new tree plantings (total 7 within orchard fence and 2 outside fence), up to a maximum of 9 shovel probes. Should archaeological materials be observed, satellite shovel probes would be placed every 5 meters to determine the horizontal extent of the materials. 3. House -shovel probes will be placed every 10 meters within the proposed footprint of the area on the north side that will be re-graded, up to a maximum of 7 shovel probes. 4. Vegetable Garden -shovel probes will be placed every 5 meters within the gardens, up to a maximum of 5 shovel probes. 5. Flower Gardens -shovel probes will be placed every 10 meters within the gardens, up to a maximum of 7 shovel probes. 6. Existing Drive -shovel probes will be placed every 10 meters within the realignment area, up to a maximum of 3 shovel probes. Pathways -shovel probes will be placed every ten meters within the footprint of the proposed pathways, up to a maximum of 10 shovel probes. 8. Weaving Shed -shovel probes will be placed every 10 meters within the proposed footprint of grading and the new foundation, up to a maximum of 2 shovel probes. 9. Garage Public Restrooms -shovel probes will be placed along the perimeter of the existing garage where the grading will take place, up to a maximum of 3 shovel probes. 10. ADA Parking Stalls -shovel probes will be placed every 10 meters within the proposed footprint, up to a maximum of 5 shovel probes. 11. Hops Vine Display -shovel probes will be placed every 10 meters within the display area, up to a maximum of 4 shovel probes. 12. Caretaker's trailer -shovel probes will be placed in the proposed footprint of the fence locations and the flower garden areas, up to a maximum of 10 shovel probes. 13. Barn -shovel probes will be placed every 10 meters within the proposed footprint of grading and the new foundation, up to a maximum of 3 shovel probes. 14. Fences -shovel probes will be placed along all the proposed fence lines every ten meters, up to a maximum of 20 shovel probes. 7 15. Creek -the banks of Olson Creek will be shovel tested within the area of potential effect from the removal of invasive species and replanting of native flora, up to a maximum of 7 shovel probes. 16. Utilities -shovel probes will be placed every ten meters along each utility line (including electrical, water, propane, and telephone lines), up to a maximum of 15 shovel probes. 17. Septic and Drainage System -shovel probes will be placed every ten meters along the six proposed trenches, for a maximum of 10 probes. Shovel probes will also be placed every ten meters in the drainfield, for up to a maximum of 10 probes. 18. Interpretive Signage -one shovel probe will be placed at each proposed sign location, up to a maximum of 20 shovel probes (20 signs proposed). 19. South Pasture -shovel probes will be placed every 10 meters within the footprints for the brush removal, grading, garden space, drainage and detention, fences, gates, and signs, up to a maximum of 12 shovel probes. 20. Parking Lot - no shovel probes are intended at this time. Monitoring Conducting subsurface surveys is not possible where proposed work occurs in existing building footprints. Instead, ENTRIX proposes to have a professional archaeologist monitor construction activities that would cause subsurface disturbance in existing footprints. The archaeological monitor would record all activities on monitoring forms, take photographs of the sediment profiles, and submit a monitoring report. Outside of the site boundary, and excluding areas that have previously been negative for cultural materials, a trained observer may be used to monitor excavations. We recommend that the observer have taken the LTAP Cultural Resources Training. The observer's role would be to spot potential artifacts and features and contact an on-call professional archaeologist. The use of an archaeological monitor ensures that if archaeological deposits are encountered, construction will stop immediately and will not continue until the professional archaeologist has assessed the resource. Should the resource require further mitigation, DAHP will be consulted and plans established in the section (f) of this application will be followed. A data recovery plan may be proposed if required for mitigation (see below}. Mitigation Should stratified archaeological deposits be encountered in any other area during subsurface survey, testing, or monitoring, all construction activities causing subsurface disturbance would be halted. A data recovery plan in conjunction with a rigorous research design would likely be proposed at that time. (c) Environmental Setting and Depositional Context Geology and Climate Pleistocene glacial events and Holocene fluvial activity shaped the Site area and vicinity. Approximately 17,500 years ago the most recent glacial event, the Vashon Stade of the Fraser Glaciation, scoured out the Site area and vicinity. During the glacial recession, a 8 mix of gravel, sand, silt, and clay, known as Vashon till, was deposited. The Site area is comprised of glacial outwash and till soils covered by alluvial silt. The elevation of the area is typically below 500 feet above sea level and consists of low rolling hills and low flat river valleys. These flat river valleys create dynamic river channels for local streams. Modern conditions for the Site area are defined by a maritime climate, with cool, typically dry summers and mild, wet winters. Since the last glacial episode (Fraser Glaciation), the climate has experienced several cycles of warming/drying and cooling/increasing moisture. Following the last glacial advance, a period of rapid warming and reduced precipitation marked the climate until approximately 7,000 BP when precipitation levels began increasing and temperatures began cooling, similar to modern conditions. From 4,500 to 2,000 BP, this cooling/increased precipitation trend continued throughout what is known as the Neoglacial. During this period conditions were substantially wetter and cooler than at present. The last major fluctuation, the Little Ice Age, occurred from approximately 500 to 100 BP and displayed a period of increased precipitation and cooler temperatures (Ames and Maschner 1999}. Flora and Fauna Past logging and settlement activities have greatly modified the vegetative profile of the area. Tree species now present in second and third growth timber stands are composed mainly of Douglas fir (Pseudotsuga menziesii), Western hemlock (Tsuga heterophylla), Western red cedar (Thuja plicata), red alder (Alnus rubra), and Bigleaf maple (Acer macrophyllum). Salal (Gaultheria shallon), red huckleberry (Vaccinium parvifolium), swordfern (Polystichum munitum), bracken fern (Pteridium aquilinum), and mosses compose the understory vegetation set. Vine maple (Acer circinatum) was used prehistorically for basketry and fish weir construction. Broadleaf rhododendron (Rhododendron macrophyllum) and Pacific dogwood (Cornus nuttalli} were use medicinally. Oregon grape (Mahonia aquifolium), and blackberry (Rubus ursinus} were important food sources. The diversity of faunal species present in the area has also been greatly affected by settlement and hunting activities. Before European contact, faunal species in the area that were economically important to local inhabitant included beaver (Castor canadensis), river otter (Lutra canadensis), bear (Ursus americanus}, and elk (Cervus canadensis). The few species not pushed out by post-contact activities include mule deer (Odocoileus hemionus), raccoon (Procyon lotor}, various avian species, salmonids, and suckers. Since Pleistocene glacial events, fluctuations in precipitation levels and temperatures have changed floral and faunal profiles for the area. The overall general profiles that are displayed presently were not established until approximately 5,000 to 3,000 BP. However, this is not to say that the profiles have remained static since this period. These changes could have been either gradual or sudden and would have required adaptation by ancient peoples (Ames and Maschner 1999). (d) Artifact Inventory Plan Site 45K1655 is a historic farm, which often contain artifacts related to agriculture and subsistence, domestic life, ethnic heritage, and transportation. These materials are likely to occur as isolated artifacts or small artifact scatters, and will include both organic and inorganic materials. Diagnostic artifacts that have research potential, including glass, ceramic, brick, faunal remains, metal, ammunition cartridges, etc., will be collected for subsequent analysis. Fragmentary brick will be recorded during excavations but will not be collected. All fragile and perishable artifacts will be treated 9 accordingly. If prehistoric artifacts are observed during subsurface survey, they will also be collected for analysis. Collected artifacts will undergo descriptive and metric analyses, where the specific analyses will depend on the types of artifacts recovered (see Section f). All analyses will take place at ENTRIX by professional archaeologists. ENTRIX will prepare all the collected artifacts for curation pursuant to Department of the Interior federal guidelines (36 CFR 79). All associated documents including maps, photographs, and field notes will also be curated. Individual artifacts or in some cases, groups of artifacts (e.g. fragmentary glass), will be placed in self-sealing polyethylene bags. An acid-free label would be placed on the outside of the bag and would include site number, catalog number, detailed provenience information, and material type. The White River Valley Museum will retain possession of the artifacts. (e) Human Remains No known burials or human remains are known in the project area. In the event of inadvertent discovery of skeletal human remains, the affected Tribes and DAHP will be notified by ENTRIX and consulted throughout the process to ensure appropriate treatment. The following protocol, pursuant to WA RCW 27.44.055, will be followed: • All ground disturbing activity within 30 feet of the remains will be halted immediately. • If not present, the professional archaeologist will be immediately contacted and will assume responsibility for assuring that this protocol is followed and a possible crime scene is not contaminated. • All skeletal material will be left in place until a designated professional archaeologist and/or medical examiner directs its removal. • The King County Sherriff's Department and Medical Examiner will be contacted immediately and asked to determine whether the remains are forensic or nonforensic. The coroner will retain jurisdiction over forensic remains. • The City of Auburn, as the landowner, will be contacted immediately of the discovery. • DAHP will be contacted by telephone and informed of the discovery. DAHP will be kept informed of all discussions regarding the remains until their final status is resolved. If the remains are found to be nonforensic, DAHP will have jurisdiction over such remains until provenance of the remains is established. • The heads of the appropriate tribal government and appropriate tribal cultural resources staff affected tribes will be contacted immediately of the discovery. Representatives of tribal governments will be invited to be present during the Medical Examiner's inspection of the remains. A notification to tribes of a finding of nonforensic skeletal human remains does not create a presumption that the remains are Native American. • If the Medical Examiner and/or state physical anthropologist determine the remains to be Native American, all affected Tribes will be notified immediately. DAHP will retain jurisdiction. 10 • The Museum will allow reburial within the Site if the Tribes desire that action. Selection of aMuseum-managed reburial location will take into account foreseeable future uses of the location. • The location of reburials will be noted on planning maps to prevent future disturbance. These maps will not be available to the public. (fib Research Design Site 45K1655 is a significant example of a single family's agrarian pursuits through the late 1800s and early 1900s. The Farm site is likely to yield important information about the Olson family's daily routine, dietary consumption, consumerism, artistic interests, and cultural heritage. On a broader scale, the Mary Olson Farm reflects the changing economic and socioeconomic times of the Green River Valley and surrounding cities of Auburn and Kent. The archaeological materials recovered from the Farm could offer insight into these regional shifts and how agrarian lifestyles were able to adapt to these changes. Data collected primarily from subsurface survey may be used to answer the following research questions. 1. What levels and types of consumerism took place at the Farm as evidenced by artifacts and assemblages? Metric and descriptive analyses will be undertaken for all diagnostic artifacts, although specific types of analyses will vary depending upon the cultural materials recovered. Analyses will occur at the artifact level and are geared towards understanding the activities represented at the site. Metric analyses will include artifact length, width, thickness, and weight. Descriptive analyses will include morphological and technological classifications (e.g. types of ceramic, glass, metal, tins, buttons, etc.), material identification (e.g. trademarks, manufacture date, manufacture technique, etc.), and artifact specific attribute assessments (e.g. bottle shapes and neck finishes, cartridge headstamps, tin opening technique and seam construction, type of product, etc.). 2. What is the depositional history of the Farm site? Subsurface survey shovel probes will be excavated in 10 cm arbitrary levels (as opposed to stratigraphic levels), providing vertical controls of artifact provenience and cultural deposits. Comparisons will then be drawn across the site to understand the depositional history within the area of study. 3. How does the Mary Olson Farm site fit into the Green River Valley region and what patterns are expressed at the Farm that reflects changes on the regional scale? By comparing historical records, the archaeological materials recovered from the site can aid in placing the Farm into the regional chronology. The Olson family was similar to many other newcomers to the Green River Valley region in that they were Swedish immigrants. Their cultural heritage would have influenced the levels and speed to which they adapted to life in a new country. Often, cultural identities are reinforced when people are in foreign countries, and the Olson family may have fostered connections 11 with other immigrant families in the region. Reinforcement of their Swedish identity may be reflected in the archaeological record through specific styles or brands of goods they used and/or discarded. Another potential area for regional comparison relates to consumer availability. The branch of the Northern Pacific Railroad was constructed in the valley in 1883 (Lentz 2000) and would have brought with it many new consumer items and goods. The archaeological materials at the Farm would likely reflect this shift in availability and variety of goods. The wagon road that was built near the Farm by 1897 would also have impacted the Olson family's access to consumer goods, and this increase in accessibility is likely represented in the archaeological record. Another possible regional comparison is related to the shift in the hops market. The hops market collapsed in the early 1890s due to the insect infestation and nationwide financial crisis (Lentz 2000). Although hops were not the Olson family's sole source of income, this regional collapse may be reflected in the archaeological record. For example, the Olson family income level may have changed or their access to certain consumer goods and commodities may have been reduced or denied as a result of the hops market collapse. The NRHP nomination form for the Farm states that the Olson family diversified their agricultural activities in the late 1880s (Lentz 2000), which should be reflected in the archaeological record. (g) Responsible Parties Lucy Zuccotti, Senior Archaeologist Tiffany James, Historic Archaeologist Jennifer M. Ferris, Staff Archaeologist Kimberly Demuth, Technical Director Cultural Resources Management ENTRIX, Inc. 200 First Avenue West, Suite 500 Seattle, WA 98119 (h) Responsible Parties Patricia Cosgrove, Museum and Farm Director City of Auburn White River Valley Museum 918 H Street SE Auburn WA 98002 (i) Financial Evidence The City of Auburn has the financial capacity either through direct expenditure or granted funds to complete the proposed survey, observation, and other archaeological work described in this permit document. Staff members of the White River Valley Museum (leasee) are capable of assisting with writing reports through collaboration with a professional archaeologist. (j) Site Restoration All of the work at the site will be in preparation for the opening of an active museum. Restoration and alteration will take place on an ongoing basis. See Appendix A. (k) Owner Agreement 12 See Appendix E. (I) Site Security The farm is fenced and subsurface survey and testing will take place with Museum and ENTRIX personnel present. The site has afull-time live-in caretaker who will be responsible for security when construction and cultural resources staff are not on site. Shovel probes will be backfilled immediately upon completion. (m) Public Participation Plan As this permit is for testing, public participation opportunities will be limited. Volunteers may help catalog materials under professional archaeologist's supervision. At the completion of the testing a summary article on the archaeology of the Mary Olson Farm will be published in the White River Valley Museum newsletter the White River Journal. This article will be placed on the museum's website (www.wrvmuseum.org) for worldwide access. In addition, a summary of the archaeological story will be permanently posted on site in one of the many planned interpretive panels. (n) Environmental Checklist Not applicable. (o) Evidence of Abandonment Not applicable. (p) Previous Violations On July 31, 2008 five small utility excavations took place at the Mary Olson Farm (Figure 6). One of these excavations was located within the site boundaries of 45KI655. A professional archaeologist representing Mary Olson Farm was not present, and an archaeological excavation permit was not obtained from the DAHP. Laura Murphy, a professional archaeologist representing the Muckleshoot Tribe, was present during the undertaking, observed the excavations, and took photographs. No artifacts were observed by the archaeologist during the ground disturbing activity. A professional archaeologist from ENTRIX representing Mary Olson Farm was retained after the fact to examine the utility excavation area. A monitoring report was then submitted by ENTRIX to the DAHP. 13 , . _ _ . ` , tr j 3 , '~wt'~_ x'S°i y,.. ~ y 4+~" ~ ~q9 * .,~M1"4Cu ^,.,.L~. ,t YSwS'IC'" •l;n~t ~Mm~ n~`#. `~YF~„ F . ~ ~~s~?'" ~~N-N~.~'r;~"•~' ~``?T~.~''~"' s`rc : 20 Mr + ' 5 y `."n.~r~ 'a~ ^6~"~'?r ~L~~`~_'~F`, yvk~~T •.a . • '~~L•,. ~..'~c"` Civ~ t ~°'srvp. ' 'WeJ. . ' ~ ~~u~~,` - ~ 3 2 _ ~ ~ r. ~,2' ~ ~ ~ F~: 2 ~ ~ ~ nw"' ~r;~~'~'t't•tF. ~ oS ~ . ~S~l'~~,~ a F x~Y Z~ t~~~ .h yl~ f - Jy~;~{~~~' tQ f 4 f ~ } yp~~ t~Y ~ ~!y~4,~~ryA , ~ Y'✓ b ~ ' ~N~}~:yT'...7~~`~i~ s:.E ~ . ~ ~}'1%~i . ♦ N ~ ~ lR. . ` qg'* ;`!~wr. ~y'» 'z` ~~~~~"s; ti ~ ~ t~~✓'i,~ 5+~ Z 4. °bw ~ t 4F 5 w6 "d'a'rvd t~' ~ r M st •t '`~'~Y~S~,"~~„ ;y ~ ~ ~ ~ r n~ ~'Y~~~~F~~~'~p~n~°~ki~ ~1 ~ ~4 Y~+ ~ . ~ d~,~ • ~ . " .h ~~T` . , • V ~ti:. ~ . , . . . . . . . . 3... ME* t 't , t , ` ~ ~ Sept~C~Dra~n F~eld:So~t Tests ~ EN7R1X ' w~ {UTARY OL"501V FARM t Y z~z ~ c r` 9 2Sx .50 70D ite qrea - ~ Fe~ ~ , ~ Se"ptrc.Dram~E~eld So~I;Tests _ ` . Figure 6: Five septic drain excavations undertaken in July 2008 by the White River Valley Museum • 14 (q) Outstanding Archaeological Excavation Permits There are no outstanding archaeological excavation permits that have been issued to the applicant by the Department of Archaeology and Historic Preservation. 15 References Ames, Kenneth M. and Herbert D. G. Maschner 1999 Peoples of the Northwest Coast: Their Archaeology and Prehistory. Thames and Hudson, Ltd., London. Boyle-Wagoner Architects 2000 Master Plan for the Olson Farm for the City of Auburn & White River Valley Museum, Auburn, Washington. Boyle-Wagoner Architects, Seattle. Carlson, Roy L. 1990 History of Research in Archaeology. In Northwest Coast, edited by Wayne Suttles, pp. 107-115. Handbook of North American Indians, Vol. William C. Sturtevant, general editor, Smithsonian Institution, Washington, D.C. ENTRIX, Inc. 2008 Final Cultural Resources Section 106 Technical Report: Olson Farm/SE 304th Street at 124th Avenue SE Intersection Project. On file, ENTRIX, Inc., Seattle. Franklin, Jerry F and C. T. Dyrness. 1988 Natural Vegetation of Oregon and Washington. Oregon State University Press, Corvallis, Oregon. Haeberlin, Herman K. and E. Gunther 1930 The Indians of Puget Sound. University of Washington Press, Seattle and London. Kaehler, Gretchen A. 2003 45K1655. Washington State Archaeological Site Inventory Form Addendum. Copies available from Washington State Department of Archaeology and Historic Preservation, Olympia, Washington. Kaehler, Gretchen A., Stephanie E. Trudel, and Lynn L. Larson 2004 Olson Farm Archaeological Resources and Traditional Cultural Places Assessment, Auburn, King County, Washington. State of Washington Cultural Resources Survey Document Number 1342728. Copies available from Washington State Department of Archaeology and Historic Preservation, Olympia, Washington. King County Cultural Resources Protection Project GIS Database 2008a Olson Farm Vicinity Map. King County Historic Preservation Office, Seattle, Washington. 2008b KING 07423. King County Historic Preservation Office, Seattle, Washington. 2008c KING 07089. King County Historic Preservation Office, Seattle, Washington. 20084 KING 07090. King County Historic Preservation Office, Seattle, Washington. 2008e KING 07091. King County Historic Preservation Office, Seattle, Washington. 2008f KING 07092. King County Historic Preservation Office, Seattle, Washington. 2008g KING 07093. King County Historic Preservation Office, Seattle, Washington. 2008h KING 07094. King County Historic Preservation Office, Seattle, Washington. King County Road Services Division (KCRSD) 2007 King County Landmarks Commission Certificate of Appropriateness Application. 16 On file, King County Cultural Resources, Seattle, Washington. Lentz, Florence K. 2000 Mary Olson Farm (45K1655). National Register of Historic Places Registration Form. Copies available from Washington State Department of Archaeology and Historic Preservation, Olympia, Washington. Stallings, Rachel J. 1995 A Cultural Resource Survey of the Green River Trail, Phase II, King County, Washington. State of Washington Cultural Resources Survey Document Number 1334678. Copies available from Washington State Department of Archaeology and Historic Preservation, Olympia, Washington. Stein, Alan J. 1999 Auburn -Thumbnail History. Electronic document, http://WWW.historylink.org/essaysloutput.cfm?file_id=675, accessed March 12, 2008. 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. William C. Sturtevant, general editor, Smithsonian Institution, Washington, D.C. Waterman, T. T., Vi Hilbert, Jay Miller, and Zalmai Zahir 2001 Puget Sound Geography, Original Manuscript from T. T. Waterman. Zahir Consulting Services, Federal Way, Washington. 17 Exhibit 16 Buffer Mitigation Monitoring Maintenance and Contingency Plan MARY OLSON FARM BUFFER MITIGATION ~ Monitoring, Maintenance, and Contingency Plan Prepared for. March 2010 City of Aubum ~ . , ~ : ~ '3 I I ~ ~ u ~ ~ . * r ~ ~ . # ~ 4 . rt ~ • . _ ~ i.. . . . . ~ ' fi .f t 'f~r3C P" 0...y~ b R~ .Y d~0. sr ~ ` ~ ~ ~Y ~ i.^~^~ r~q ~ • ~'4. x ~f "",.e~;,' 1R~~+ „ rr "3 ~ .dY' ,r _C1` ~ A•v~., y,.. .s ^~.,a,. ~ ^y~~ . fa ~ . t ia. ~ °'h - , s ~ ^ a$e !fX Y ~ t- + f.~:a + ~tY' ~#,~a. 9k'~ nr fi'"" ~A e s},f~"~SK.;F t ~ i6~-~a,m9. x,~ "~q~,r,^~ '~~,sw ~t~~v- . "t ~ _ B ~~„7~y~ati ~.,~x ~K wi.~~ 7~~ ,ryS+'~A"' d.^'.~ 't ~ ~~...~C'"~.~s. 1..,,i~ e# X~~y`,~m~1r~'~~,,.• y°~e~7 . J'~.~~~,r ~;,~~~a..~ F~ ar ~.,~~a ~ ~~.~'};•~;'S ~ :~+c~~~".,~..~!Cy~ ~°''~..`,~F"~.~ ~'~~,^~,s~~ ;~ti: R '~'7 k i `:a t.n.`'~,=.s~~~~, f ~T ~ +2' q_ • :d~ w a TABLE OF CONTENTS 1.0 PROJECT BACKGROUND AND DESCRIPTION ..................................................................1 2.0 Existing Conditions l 3.0 IMPACT ASSESSMENT ..............................................................................................................2 4.0 PROPOSED MITIGATION 2 5.0 GOALS AND OBJECTIVES ........................................................................................................2 6.0 PERFORMANCE STANDARDS .................................................................................................3 7.0 CONSTRUCTION PLANS and AS Built Documentation 4 8.0 MONITORING PLAN 5 8.1 METHODS .............................................................................................................................................5 8.2 REPORTING 6 9.0 Maintenance Plan 6 10.0 CONTINGENCY PLAN 7 1 O.1 PROVISION TO EXTEND THE MONITORING PERIOD ~ 11.0 LIMITATIONS 8 FIGURES AND MITIGATION PLAN DRAWINGS 9 LIST OF FIGURES 1. Figure 1-Vicinity Map 2. Exhibit A -Shoreline Restoration Plan Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan 1.0 PROJECT BACKGROUND AND DESCRIPTION The Mary Olson Farm is located at 28728 Green River Rd NE, Auburn Washington; Section 32, Township 22 North, Range 5 East (Figure 1). The City of Auburn has acquired a 9-acre parcel of land located east of Green River Road and north of the existing Mary Olson Farm for use as event parking for activities (Figure 1). The Green River flows generally south to north to the west of the property, although the property does not front the river. The Green River Road is located between the westerly property edge and the river (Figure 1). 2.0 EXISTING CONDITIONS Site Conditions The 9-acre parcel where the event parking area will be located is bounded by Green River Road to the west, undeveloped land vegetated with grass and shrubs to the north, and undeveloped forested land to the east and south. The parcel is relatively flat, containing microtopographic depressions and a shallow north-south depression near the center. The southern portion of the parcel, where the event parking area is proposed, is dominated by Himalayan blackberry and reed canarygrass with some bracken fern also present. North of the proposed Parking Area and within the remainder of the 9-acre site, vegetation is dominated by various upland grasses and scattered shrubs. Dominant species in the center of the site include orchardgrass, sweet vernalgrass and tall fescue. Scattered fruit trees are located in the area north of the proposed parking area. Canada thistle, bull thistle, and Scot's broom are common throughout the site. Critical Area Buffer The majority of the event parking area is located within 200 feet of the Green River and is regulated by the City of Auburn pursuant to the Shoreline Management Act (SMA). All waterbodies regulated under the SMA are considered to be Class I streams under the City's Shoreline Master Program The City's critical areas regulations require a 100-foot critical areas buffer measured from the Ordinary High Water Mark (OHWM) of the Class 1 streams. Although the property does not front the river, approximately the westernmost 30-foot of the proposed event parking area is within the 100-foot Class I stream buffer (Exhibit A). In addition, two access points to the parking area will extend to Green River Road into vegetated portions of the road right of way. A narrow ditch (approximately 1 foot wide and 2 feet deep) overgrown by Himalayan blackberry is present along Green River Road. The majority of the on- site regulated stream buffer is dominated by Himalayan blackberry. The remainder is dominated by fallow pasture grass and non-native weeds (Photo 1.) ESA Adolfson 1 March 2010 Mary Olson Farm - Monitoring, Maintenance, and Contingency Plan - I ; i I .:a.. n, . ~ 4y ~ • ~ • ~r. - : ~ ' Photo 1. Vegetation within proposed event parking area. View to north-northeast from Green River Road near the southern property limit. 3.0 IMPACT ASSESSMENT Impacts to approximately 2,200 square feet of critical areas buffer will result from proposed construction activities (Exhibit A). Impacts occur within the outer limits of the regulated critical areas buffer in areas currently dominated by non-native vegetation. 4.0 PROPOSED MITIGATION Total landscaped area to be planted on the entire site is approximately 23,700 square feet. Landscaped areas beyond the 100-foot critical areas buffer are not included in this Monitoring, Maintenance, and Contingency Plan. As mitigation for permanent impacts within the critical areas buffer, the City will enhance 4,500 square feet of remaining critical areas buffer currently dominated by non-native vegetation to establish a native plan community. A plant schedule is included on Exhibit A. 5.0 GOALS AND OBJECTIVES The goal of the buffer mitigation plan is to enhance existing critical areas buffer functions following construction. The project objectives include: include moderate water quality improvements and moderate wildlife habitat benefits. This will be achieved by the following: • Removing all non-native invasive vegetation with the critical areas buffer located between the parking area and the Green River Road. • Restoring disturbed native critical areas within the project area to the extent possible. ESA Adoljson 2 March 2010 Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan • Enhancing 4,500 square feet of existing degraded critical areas buffer to mitigate for permanent impacts to approximately 2,200 square feet of on-site buffer. 6.0 PERFORMANCE STANDARDS A set of specific performance standards has been established to correspond with the stated mitigation goals. These standards serve as the benchmarks that will be used to evaluate the success of the mitigation project. By monitoring the project and comparing the results to performance standards, a determination can be made as to the need for implementing a contingency plan. The performance standards are as follows: • Year 0: An as-built plan will be prepared following construction and plant installation. • Year 1: Planted woody species in the critical area buffer will achieve 100 percent survival. If all dead woody plantings are replaced within the monitoring period, the performance measure will be met. • Year 1: All disturbed areas have been successfully restored with the specified seed mixes. No bare earth exceeding 1 square meter is present within the on-site critical area buffer. • Year 1: Maintenance has been conducted to control non-native invasive species. The critical area buffer shall be free of all designated Class A, B, or C species, non-designated species, and noxious weeds of concern on the current-year's King County Noxious Weed List. • Year 1: All installed "Habitat Conservation Area" signage is present and functioning as intended. • Year 2: Planted woody species in critical area buffer will achieve 90 percent survival. If dead woody plantings are replaced up to the 90 percent level within the monitoring period, the performance measure will be met. • Year 2: Planted trees species will achieve 100 percent survival. If all dead trees are replaced in-kind within the monitoring period, the performance measure will be met. • Year 2: Maintenance has been conducted to control non-native invasive species. The critical area buffer shall be free of all designated Class A, B, or C species, non-designated species, and noxious weeds of concern on the current-year's King County Noxious Weed List. • Year 2: All installed "Habitat Conservation Area" signage is present and functioning as intended. • Year 3: Planted woody species in critical area buffer will achieve 80 percent survival. If dead woody plantings are replaced up to the 80 percent level within the monitoring period, the performance measure will be met. ESA Adolfson 3 March 2010 Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan • Year 3: Planted trees species will achieve 100 percent survival. If all dead trees are replaced in-kind within the monitoring period, the performance measure will be met. • Year 3: Maintenance has been conducted to control non-native invasive species. The critical area buffer shall be free of all designated Class A and B, or C species on the current-year's King County Noxious Weed List. Total coverage ofnon-designated species and noxious weeds of concern shall not exceed 10 percent total area within the 4,500 critical area buffer enhancement areas. • Year 3: All installed "Habitat Conservation Area" signage is present and functioning as intended. 7.0 CONSTRUCTION PLANS AND AS BUILT DOCUMENTATION Exhibit A provides a conceptual restoration plan. Detailed construction plans and specifications will be provided with the final site grading and construction documents. Site-specific Best Management Practices (BMPs), including a Temporary Erosion and Sediment Control Plan (TESC), will be part of the design package. The area necessary for construction access will be the minimum necessary to prevent disturbance of existing native vegetation. Measures to be implemented that minimize impacts during construction may include: • The limits of construction area will be clearly marked with orange barrier fencing. This type of barrier reduces the potential for heavy equipment to damage vegetation and soil outside the construction area, particularly within the adjacent forest and wetland. • A TESC Plan and BMPs will be followed that include silt fences, sediment rolls, and straw bales to prevent suspended particles from leaving the construction zone. The contractor will be responsible for inspection of all erosion control measures and will repair any damage to the erosion control structures, as needed. • Staging areas and stockpile sites will be located in upland areas outside critical areas and critical areas buffers. • Maintaining erosion control measures throughout the site until bare soils have been successfully vegetated. The Contractor will be responsible for preparing an as-built drawing of the critical area buffer mitigation plan prior to receiving final approval from the City. The as-built plan shall include, at a minimum, red-lined notations on the final landscape plans showing adjustments to planting areas, plant substitutions, and plant quantities. ESA Adolfson 4 March 2010 Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan 8.0 MONITORING PLAN 8.1 Methods The main objective for monitoring is to document the level of success in meeting the interim performance standards and the final success standards of the Mary Olson Farm Critical Areas Buffer Mitigation Site in accordance with Auburn Critical Areas Code (ACC)16.10.130. Schedule Monitoring will be conducted each year for thee years. Year 1 monitoring will be conducted by a qualified biologist or landscape architect. Year 1 monitoring will begin the first full growing season (in late summer or early fall before dormancy) after construction is complete and the plants have been installed. Year 2 and Year 3 monitoring will occur in late summer or early fall in subsequent years. Sampling Procedure Plantings The buffer enhancement areas are small with relatively few plantings. Plant survival in Year 1, Year 2, and Year 3 will be calculated through a direct stem count of the entire buffer restoration area. Sampling in Year 1 and Year 2 will be based on a census of installed plant materials. Sampling in Year 3 shall include all native woody plants (installed and volunteer). Seed establishment will be determined by a visual inspection of the entire on-site buffer enhancement area. Areas of bare soil will be estimated to the nearest square meter. Non-native Plants Monitoring biologists or landscape architects will conduct a visual survey of the buffer mitigation area each year and note the presence ofnon-native plants within the on-site buffer. In Year 3, monitors will estimate total coverage of all occurrences ofnon-designated species and noxious weeds of concern on the King County Noxious Weed List. Si~nage Monitoring biologists or landscape architects will inspect each critical area sign each year. Data Collection In addition to quantitative data, the following information will be recorded during the monitoring site visits to assist with recommendations for additional maintenance or to assist with contingency planning. ESA Adolfson 5 March 2010 Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan • General plant health assessment; • Observations of excessive wildlife browse or damage; • Documentation of the presence of undesirable plants (weedy and/ornon-native species) in areas abutting the buffer enhancement site; • Photo documentation of site conditions from fixed photo points. Photo points will be established during Year 1 monitoring and photos from each point using similar equipment and techniques each monitoring visit; • Recording of any wildlife use of the area; and • Recording other potentially deleterious conditions in the mitigation area (vandalism, litter, trespass/human disruption, etc.). 8.2 Reporting Monitoring reports will address the items presented in the preceding section as well as document successes and problems. The reports will recommend plant species replacements, if necessary (see Maintenance section below). Reports shall include photo documentation for that year and all prior years. One monitoring report will be submitted annually and will present the monitoring results for that growing season. Findings related to deficiencies in relation to the established performance criteria will be relayed to the project owner within 15 days. Final monitoring reports will be submitted to the City no later than November 30 each year and shall include a discussion of all corrections and contingencies completed and proposed by the owner. 9.0 MAINTENANCE PLAN Maintenance of the mitigation areas will begin after completion of the project and continue as needed for up to three years. After the initial planting acceptance by the proj ect biologist, the landscaping contractor will be responsible for plant survival for a period of one year. After that, maintenance will be performed by the City of Auburn. A minimum of two maintenance events shall occur in Year 2 and Year 3 and shall occur in early spring/late winter before leaf out and in late summer/early fall prior to the annual monitoring site visits. Specific maintenance will correspond to specific issues that may arise on the site, but at a minimum site maintenance will include: • Cultivating mulch circles around each plant to remove competing grasses or weeds. • Watering (summer) or maintaining supplemental irrigation during unseasonable dry periods or when the soils are unusually dry; • Removing non-native or invasive plant species as needed. • Providing additional soil amendments and/or mulch as needed. ESA Adolfson 6 March 2010 Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan • Removing trash and debris. • Repairing/Replacing critical areas markers and signs. 10.0 CONTINGENCY PLAN If monitoring reveals a failure of mitigation requirements based on the stated performance criteria, a contingency plan will be implemented. Such plans are prepared on acase-by-case basis to remedy any aspects of the mitigation that does not meet the performance standards. The plan, if required, would be developed in cooperation with the City of Auburn and a qualified biologist or landscape architect. Contingency measures shall include, at a minimum: • Cultivating and re-seeding bare ground. If bare ground cannot be effectively seeded due to slope, aspect, or other natural condition, the area may require mulching, regrading, or mechanical stabilization using bioengineering techniques. If bare ground is a result of human or animal incursions, the area may need temporary or permanent fencing (see below}. • Replacing plant materials or installing supplemental plantings as needed to compensate for dead or highly stressed plants. Prior to replanting or installing supplemental plantings, the contingency measure should be reviewed by a qualified biologist or landscape architect to determine if adjustments to plant species, locations, or installation specifications, are warranted. • Providing fencing or other protective measures around ground plants incases of excessive browse or other animal damage. • Installing additional signage at informal or unintended access points. • Providing fencing to prevent trespass, vandalism, or damage caused by humans. All deficiencies related to the site meeting the performance criteria will be reported to the owner within 15 days. All repairs, if necessary, will be completed prior the preparation of the annual monitoring report, if feasible, but no later than leaf out the following growing season. All plant materials will bereplaced in-kind (i.e., replacement plants will be sized to match the sizes of successful plantings on the site}. ~Uith the exception of plant sizing, all replanting, repairs, or new work will be completed using original specifications unless otherwise recommended by the monitoring biologist or landscape architect. All deviations shall be approved by the City prior to implementation. ~ 0.1 Provision to Extend the Monitoring Period The standard three-year monitoring period will be extended if performance standards are not being met at the end of the initial three-year period and any required maintenance or contingencies are not completed prior to submittal of the final (Year 3) monitoring report. If monitoring is extended, the additional monitoring period will extend to the completion of the first full growing season after the final contingency measure is completed. ESA Adolfson ~ March 2010 Mary Olson Farm -Monitoring, Maintenance, and Contingency Plan 11.0 LIMITATIONS Within the limitations of schedule, budget, scope-of work, and seasonal constraints, we warrant that this study was conducted in accordance with generally accepted environmental science practices, including the technical guidelines and criteria in effect at the time this plan was prepared. The results and conclusions and recommendations represent the authors' best professional judgment, based upon information provided by the proj ect proponent in addition to that obtained during the course of this study. No other warranty, expressed or implied, is made. ESA Adolfson 8 March 2010 Coal Creek Upper Reach Bank Stabilization Conceptual Mitigation Plan FIGURES AND MITIGATION PLAN DRAWINGS ESA Adolfson 9 March 2010 IGngLLCounty~ ~ ~ ~ ry z x ::r - •'(I ' AUbURI ~ a •.*k; rae«na Project Sde w Buffer EnhancementSite `""~~•5 ~ ~ ~`O~ Olson Farm 100 `ti~ GteeY- ~c~o m ~ ~ ~a y E o N ~~p o0 o d, i E C O Cn ~ 0 61 ~ SE 29UTM ST g ~ i" i ; g . LL a_P,.°' ° ` 400 N ' N Legernf W I\ - SVeams (King County) U N a 250 Q Parcel (Grey Li~es) a I I ~ ° - to0' Contours a Feet ~ Auburn Olson Farm. 208375.01 SOURCE: City of Auburn, 2003, King County, 2007/ 2008; Figure 1 NRCS, 2003; USFWS, 2007; USDA-NAIP (2009 -Air Photo) Vicinity and Project Location Aubum, Washington NOTE: y ~ MULCH (4 THIC . DISTURBED ARE • 4 ~Y ~ ' y ' ' UMII'S NOT INDI( ~r~ ~Y : • r • •Y .y ,Y ,y ~Y ~Y W,`. •y~` . INGARDEN 01 . • ~ • j•~ ~ • ~ I ~ ~ r ~ Y ~Y + ~ + ~ 'I ~ ~ v ~p q' ry . ~ ~ ~ . / ~ .~r~ ~ i~ j7 •~Y ~ ` ♦ • ' . ti~ ~ •i ! •j~ • ~ ~ . %7. 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W U` In 4 ~ I H ~ v 1 ~Z i ~ ' xW wF I ~z ~ _ I ~ ma ~ ty ~ ~ I ~ I ~G, I !t I ~ Exhibit 17 Written Comments From: Karen Walter [mailto;KWaiter@muckleshoot.nsn.us] Sent: Friday, June 18, 2010 5:00 PM To: Jeff Dixon Subject; RE: Mary Olson Farm Expansion Parking Lot and Trail Impravements, SEP10-0008, Notice of Application and Determination of Non-Significance Jeff, The Muckleshoot Indian Tribe Fisheries Division has reviewed the environmental checklist, the site plans, the DARPA, the July 16, 2008 Wetland Investigation and Site Review; the Farm Buffer Mitigation Plan (March 2010}; and the Surface Water Technical Information Report for the Proposed Parking Improvements for the Mary Olson Farm project site. We offer the following comments in the interest of protecting and restoring the Tribe's treaty protected fisheries, resources: Potential Pro' ect Im acts and Recommendations In general, the project needs to avoid potential adverse impacts to the Green River, its floodplain and associated riparian area to the fullest extent possible. l.Loss of Groundwater recharge Since the project will be adding new impervious surfaces where none currently exist, stormwater generated from the parking area and trails needs to be infiltrated to the fullest extent possible to not only avoid causing surface water runoff, but to ensure that groundwater recharge is not adversely affected as well. The Surface Water Technical Information Report only discussed potential stormwater runoff impacts, so it is unclear if there could be any adverse impacts to groundwater recharge from the project. While we expect that the potential groundwater impacts to be minimized through the use of the proposed bio-retention and rain garden facilities, we want to be sure that impacts to groundwater recharge are avoided as much as possible and any unavoidable impacts are fully mitigated. 2. Potential to increase air temperatures. The materials we reviewed indicate that grasscrete surfacing will be used on some parking stalls. We recommend that pervious materials be used to the fullest extent possible to allow for infiltration of stormwater and to avoid creating additional sources of solar absorbing materials that generate heat and modify air temperatures which could further exacerbate existing water temperature problems. As noted in the DARPA, the Green River in this area is listed an the State's 303~d}list for temperature. The project needs to minimize its potential to generate heat from impervious surfaces which should be done by maximizing areas that use the grasscrete surfacing, minimizing hard surfaces, and using lighter colored paving materials bother than black asphalt} where pavement must go. In addition, more tall native trees should be planted within the stream buffer mitigation area shown on Sheet 11. Currently, only 12 conifers are proposed to be planted throughout the site. We recommend that additional native trees, potentially including big leaf maple, black cottonwood, and western red alder be planted in lieu of the lower growing vine maples, elderberry, and other small trees and shrubs that will provide limited shade to offset any increases in air temperatures from adjacent impervious surfaces that generate absorb solar energy and generate heat. 3. Future floodplain restoration The project should ensure that it will not preclude any future floodplain actions that may be needed to restore salmon habitat and habitat forming processes as a result of its location and proximity to the Green River and its 100 year floodplain. If these types of changes to the floodplain are needed in this vicinity, then there may be a need to modify this project in the future which should be allowed. We appreciate the opportunity to review this proposal. Please Iet me know if ou have Y any C~uestlonS. Thank you, Karen Walter Watershed and Land Use Team Leader 11~Iuckleshoot Indian Tribe Fisheries Division 39015172nd Ave Auburn WA 98092 253-876-3116 -----original Message----- From: Karen Walter Sent: Thursday, June 17, 2010 7:30 AM To: Jeff Dixan Subject: RE: Mary ~Ison Farm Expansion Parking Lot and Trail Improvements, SEP10- 0008, Notice of Application and Determination ofNon-Significance Jeff, Thanks for the email and the update. I apologized for missing the June 15 deadline- I had some other priority issues come up. I will look at the materials and let the City know if we have any comments by the end of the day tomorrow. Karen Walter MITFD From: Jeff Dixon ~jdixon@auburnwa.gov] Sent: Wednesday, June 1 b, 2010 3:02 PM To : Karen Walter Subject: RE: Mary Olson Farm Expansion Parking Lot and Trail Improvements, SEP 10- 0008,Notice ofApplication and Determination ofNon-Significance Karen, In order to meet critical timing, the City has proceeded to issue the Final Determination ofNon-Significance DNS}for the Olson Farm parking lot and trail improvements project after extension of the comment period to Tuesday, June 15 at 5:00 pm. A copy of the Final DNS is attached. The City will continue to accept and consider comments on the project up to and at the shoreline substantial development permit hearing scheduled for June 29, 2010 to be conducted by the city's Hearing Examiner. A public hearing by the Hearing Examiner on the shoreline permit will be held June 29, 2010, 5:30 pm City Council Chambers, 25 West Main Street, Auburn WA 9800I . Any person desiring to present views with regard to the shoreline permit application may do so in writing to the Hearing Examiner in advance or orally at the hearing. Again, I want to offer that the project engineer and I are willing to meet with you and review and discuss the project. Sincerely, Jeff Dixon -----original Message----- From: Karen'~Talter [mailto:KWalter~a muckleshoot.nsn.us] Sent: Thursday, June 10, 2010 5:20 PM To: Jeff Dixon Subject: RE: Mary Olson Farm Expansion Parking Lot and Trail Improvements, SEP 10-0008, Notice of Application and Determination of Non-Significance Jeff, Thank you for your prompt response. We will do our best to meet the June 15 2010 5 pm deadline. Please note that in the future, it would be best if the City could send a complete packet of information including site plans and technical reports with the SEPA documents so that we can review them timely, Best regards, Karen Walter