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HomeMy WebLinkAboutITEM 1 PLT10-0010 Exhibit 1 Number of Pages 11 CYIYOF CHUB°V AGENDA BILL APPROVAL FORM WASHINGTON Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 Department: Planning and Attachments: See Exhibit List Budget Impact: NIA Development Administrative Recommendation: Hearin Examiner approve the Preliminary Plat of W ncrest Background Summary: OWNER/ APPLICANT: Schneider Homes, Inc.: Attention Harry Schneider 6510 South center Boulevard, Suite 1, Tukwila, WA 98188 REQUEST: The proposal is to subdivide 8.60 acres into 24 single family residential lots. LOCATION: The subject property is located at the intersection of 64th Avenue South and South 299`" Street. Parcel Numbers: 0221049052, 022104TRCT, 0221049214, 0221049216, and 0221049054. EXISTING LAND USE: The properties are currently vacant. COMPREHENSIVE PLAN DESIGNATION: Single Family Residential SEPA STATUS: A determination of non-significance was issued on June 21, 2011. Individuals were able to make comments until July 5, 2011. The appeal period ended on July 19, 2011. Reviewed by Council & Committees: Reviewed by Departments & Divisions: ❑ Arts Commission COUNCIL COMMITTEES: ® Building ❑ M&O ❑ 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 M Public Works ❑ Human Resources ❑ Information Services Action: Committee Approval: ❑Yes ❑No Council Approval: ❑Yes ❑No Call for Public Hearing Referred to Until Tabled Until Councilmember: Staff: Taylor Meeting Date: Jul 20, 2011 Item Number: AUBURN* MORE THAN YOU IMAGINED Agenda Subject: Wyncrest Preliminary Plat, PLT10-0010 Date: June 24, 2011 The Comprehensive Plan designation, zoning designation and land uses the subject property and map showing the adjacent zoning: Comprehensive Zoning Land Use Plan Single Family R-5, 5 du/acre Detached single. Site Residential family residence North Single Family R-5, 5 du/acre Undeveloped, Detached Residential single family residences South Single Family R-5, 5 du/acre Undeveloped, Detached Residential single family residences West Single Family R-5, 5 du/acre Detached single family Residential residences East Single Family R-5, 5 du/acre Undeveloped, Detached Residential single family residences c :.lr ~ to (S I^ i 022100C03 J 1 L~)'_lR { I a i t `.f2~+?] 1 N 1.: ,ice ~S r f - - 1 - Cll 29 ~ - 210 ` , ~ f~ I S1U~aCU+] r l11 • + 'U . ' - ; r L:7 ti5 I ~ICQT]fl] 11 !1`l_ i I (_i F7 . N I ~7- sio5cQ -,22 1 ~ ry ~ O(t SUbfe rO~L( • r + 7 ~ t- 1'5.,)3J!AS - r ~Jl2 iS3:O3C09) Il '1 J1 y i + +~,1 - ` f ~ t tl ,y y r' 13 OI , a f~~i,L2t l lA T210 ~Lli7:?fr.~ 7.I. Ltl 1 tt.4 i3G S Zoning EACL light Commercial District ■C2 Central Business District ~C3 Heavy Commercial District CN Neighborhood Shopping District IUDUC Downtown Urban Center ■EP Environmental Park District I Institutional Use District Lakeland Hills South PUD LF Airport Landing Field District Ic MI Light Industrial District ® M2 Heavy Industrial District ®P3 Public Use District !SPUD Planned Unit Development Rt Residential 1 OU/Acre R5 Residential 5 DU/Acre t?-'1: R7 Residential 7 DU/Acre 0R10 Residential 10 DU/Acre ISR20 Residential 20 OU/Acre RC Residential Conservancy MRMHC Residential Manufactured/Mobile Home Units ORO Residential Office District :RO-H Residential Office District (Hospital) 1TV Terrace View MUNC Unclassified Use District Page 2 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 FINDINGS OF FACT: 1. Harry Schneider, of Schneider Homes, Inc., submitted an application for a preliminary plat on December 22, 2010 for a twenty-four (24) lot single family residential development. 2. The subject property is located at the intersection of 64th Avenue South and South 299th Street. Parcel Numbers: 0221049052, 0221049214, 022104TRCT, 0221049216, and 0221049054. 3. The subject property is zoned R-5, 5 dulacre. The proposed use is consistent with the R-5 zoning designation within the Auburn City Code (ACC) Chapter 18.07 as well as the Comprehensive Plan designation of Single Family Residential. 4. Water will be provided by the Lakehaven Utility District. 5. Sanitary sewer service will be provided by the Lakehaven Utility District. 6. Requirements of ACC Chapter 15.74 Land Clearing are applicable to the site. 7. No state or federal candidate threatened or endangered plant species has been identified on the site. 8. No state or federal candidate threatened or endangered animal species or habitat has been identified on the site. 9. The proposal will not have significant adverse environmental impacts on fish and animals, water, noise, air quality, environmental health, public services and utilities, and land and shoreline use provided the attached conditions of approval are met. 10. Pursuant to ACC Chapter 15.74 and City of Auburn Design Standards, a temporary erosion and sediment control plan is required to be approved and implemented on the site prior to and during site development. Potential significant adverse environmental impacts associated with erosion and sedimentation from this development will be adequately mitigated through compliance with this regulation. 11. The applicant submitted a Preliminary Storm Report for the Preliminary Plat of Wyncrest, dated November 22, 2010 and revised on March 21, 2011. An email from Monty Bakken, City of Auburn Development Engineer dated May 2, 2011 states that as designed the proposed detention pond sizing in adequate. Pursuant to ACC Chapter 13.48 and City of Auburn Design Standards, a storm drainage plan and subsequent installation of an approved stormwater management system on the site is required. Potential significant adverse environmental impacts associated with increased stormwater runoff from this development will be adequately mitigated by compliance with this regulation. 12. Per the review of City of Auburn Traffic Engineer, Joe Welsh, during the pre application conference held on October 6, 2010, a traffic study was not required for this project However, the project will add approximately 24 new PM peak hour trips to the transportation network. The applicant was informed of the current traffic impact fees ($3,882.61 per new residence) at the October 6th meeting. Traffic impact fees are assessed at building permit issuance or can be deferred if the applicant complies with Ordinance No. 6341. 13. Per an email from City of Auburn Traffic Engineer, Joe Welsh dated March 6, 2011, the emergency access easement is sufficient at this time; however, the Plat of Wyncrest will carry a plat condition requiring construction of the access when the number of lots utilising said access reaches 25. Page 3 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 14. To mitigate noise impacts associated with the proposal, all construction shall comply with ACC 8.28. 15. The applicant shall mitigate school impacts through the payment of the school impact fee in effect at the time of building permit issuance. 16. Fire impacts generated by the project will be mitigated through payment of the fire impact fee in effect at the time of building permit issuance. 17. The applicant shall submit a landscape and irrigation plan, pursuant to ACC Section 17.12.210 and City of Auburn Design Standards. 18. Fire hydrants and mains capable of providing the required fire flow shall be provided in accordance with the City of Auburn Design Standards. Fire hydrant location shall be approved by the Fire Marshal. 19. Per Table 10-1 Minimum Street Design Requirements, City of Auburn Construction Standards, local residential streets are required to be a minimum of 28 feet between the curbs, and parking is allowed on one side of the street only. "No Parking this side" signs, in accordance with City of Auburn standard details, shall be installed prior to occupancy of structures on the site. 20. Auburn City Code 13.16.060(M) requires the maximum distance between hydrants for a single-family use district shall be 600 feet, measured as the fire vehicle lays its hose. This regulation will insure that any house in the area will be located within 300 feet of a fire hydrant. 21. A Department of Ecology Construction Stormwater General Permit is required prior to site work commencing. 22. A Department of Natural Resources Forest Practice permit is required prior to land clearing activities commencing on site. 23. The applicant provided a Critical Areas Report for Wetlands, Streams and Wildlife Habitats prepared by Habitat Technologies dated December 7, 2010. There are two wetlands present on the property. The applicant proposes to place both of the wetlands into "sensitive area" tracts. Pursuant to Auburn City Code 16.10.090.E.f long term protection of a regulated wetland and its associated buffer shall be placed in a separate tract on which development is prohibited (as proposed by the applicant) or protected by execution of an easement dedicated to the city, a conservation organization or land trust. The location and limitations associated with the wetlands and the buffers shall be shown on the face of the deed or plat applicable to the property and shall be recorded with the King County recording department. 24. The applicant provided the necessary geotechnical analysis as part of the civil plan review to support the low impact development techniques proposed for the storm drainage facilities. The applicant has demonstrated that the soil conditions on-site are appropriate and that adequate freeboard exists between the proposed on-site storm drainage facilities and the high groundwater elevation. 25. A Combined Notice of Determination of Non-Significance and Public Hearing Notice was issued on June 21, 2011 (Exhibit 6). The City received one comment letter on this project from the Washington State Department of Fish and Wildlife (please see Exhibit 7) stating "The Hydraulic Code (RCW 77.55.021) actually defines a hydraulic project as the construction or performance of work that will use, divert, obstruct, or change the natural flow or bed of any of the salt or freshwaters of the state.' Such a project may or may not be within the ordinary high water line and often is not, such as a bridge, outfall, or levee, etc. Waters of the state may include streams, ponds, lakes, estuaries, and marine waters and wetlands associted with these water courses. Once the proposed project has selected a final design, it can be determined whether or not a Hydraulic Project Approval will be Page 4 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 required for it." Staff emailed this comment letter to the applicant on July 1, 2011. The public hearing notice was issued a minimum of 10 days prior to the public hearing as required by ACC 18.70.040. The notice was also posted on site and mailed to adjacent property owners within 300 feet of the subject property. 26. The applicant provided a title report dated October 11, 2010, all currently assessed taxes on the property have been paid; there are no tax leins on the property. 27. The applicant submitted a School Walkway Analysis dated November 22, 2010 and updated March 21, 2011 to demonstrate improvements for pedestrian movements for school age children as part of the neighborhood development. In an email dated March 21, 2011 Jo Boyer of the Federal Way School District commented A crosswalk is needed to assist all elementary students in getting from the east side of 64th Avenue South to the west side, where they will use sidewalks to walk to the Meredith Hill Elementary. Since the direction of traffic leaving Wyncrest will more likely flow towards South 296`" Street, which leads to West Valley Highway, staff recommends placing one crosswalk at 64th Avenue South. This crosswalk should be raised, as on a speed bump, to encourage slower speed in the neighborhood. Signage indicating a crosswalk ahead should also be placed in the neighborhood. it would be beneficial to use LED lights on the signage to indicate student use." The applicant in lieu of the school district's request moved the crosswalk to the north side of the intersection of 2991h and 64th and although it is not called out to be raised, will be on the north side of the intersection due to a residential driveway conflict on the west side of 64th Avenue South. CONCLUSIONS: ACC Chapter 17.10.070 provides certain criteria for approval of a Preliminary Plat: 1. Adequate provisions are made for the public health, safety and general welfare and for open spaces, drainage ways, streets, alleys, other public ways, water supplies, sanitary wastes, parks, playgrounds and schools. Staff Comment The proposed 24 lot preliminary plat includes provisions for storm water detention, road access, water, and sewer utilities. Water will be provided to the project through Lakehaven Utility District. The applicant provided a water availability certificate as part of the application to show adequate water supply exists for the project (Exhibits 8 and 9). Sewer is provided through the Lakehaven Utility District. Adequate provisions are made for schools through the payment of school impact fees at the time of building permit issuance. Sidewalks do not currently exist in the vicinity. Sidewalks will be provided along 64th Avenue South the length of the subject property frontage. The proposed project of 24-lots does not reach the threshold of 50 units for requiring dedicated park space as stated in ACC 17.14.100. However, the City will assess a park impact fee at the building permit stage of the project to address impacts to the City's park system by the project. 2. Conformance of the proposed subdivision to the general purposes of the comprehensive plan. Staff Comment Comprehensive Plan Elements: The following section provides the text from the Comprehensive Plan and how the proposed Wyncrest Preliminary Plat is in conformance with the plan policies: Land Use Goal 7: Residential Development To emphasize housing development at single family densities, in order to reestablish a mix of housing types appropriate for a family oriented community, while recognizing the need and desire for both lower density and higher density housing appropriately located to meet the housing needs of all members of the community. Page 5of11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 Policy LU-17: Residential densities in areas designated for single family residential uses should be no greater than 7 units per acre. Objective 7.2: To designate land for the development of new single family homes. Objective 7.3: To promote the development of quality single family neighborhoods which relate the design and types of residential areas to important natural and manmade features. Policy LU-26: Emphasis shall be placed upon the manner in which the recreational needs of the residents shall be met in the approval of any residential development. Staff Comment The project site is 8.60 acres. With 24 lots proposed, this yields a density of 5 dwelling units per net acre. Recreational needs of the residents are met through the assessment of a park impact fee at the building permit stage. The proposed project meets the density of the R-5 zoning district and land use designation of Single Family Residential and assists the City meeting its housing targets and growth management objectives. 3. Conformance of the proposed subdivision to the general purposes of any other applicable policies or plans which have been adopted by the City Council. Staff Comment The proposed application complies with the City of Auburn Comprehensive Transportation Plan. The applicant proposes a deviation from the current road standard which will allow the applicant to improve 64th Avenue South without a center turn lane, but with the necessary improvements in the pavement and curbing, and also.will include a six foot bike lane in support of the Comprehensive Transportation Plan. The proposed application complies with the adopted Vision 2040 of the Puget Sound Regional Council which supports the State adopted Growth Management Act which emphasizes infill development in cities over development of rural properties outside of city limits. The subject properties are part of the West Hill area, which was annexed into the City of Auburn city limits in 2008. The proposed subdivision will be located directly across the street from an existing subdivision in an area that is already served by water and sewer utilities and is located within close proximity to improved non-residential roads and commercial services. 4. Conformance of the proposed subdivision to the general purposes of this title, as enumerated in ACC 17.02.030. • The purpose of this title is to regulate the division of land lying within the corporate limits of the city, and to promote the public health, safety and general welfare and prevent or abate public nuisances in accordance with standards established by the state and the city, and to: • Prevent the overcrowding of land; • Promote safe and convenient travel by the public on streets and highways; • Promote the effective use of land; • Provide for adequate light and air; • Facilitate adequate provision for water, sewerage, storm drainage, parks and recreational areas, sites for schools and school grounds, and other public requirements; • Provide for proper ingress and egress; • Provide for the expeditious review and approval of proposed land divisions which comply with this title, the Auburn zoning ordinance, other city plans, policies and land use controls, and Chapter 58.17 RCW; • Adequately provide for the housing and commercial needs of the citizens of the state and city; Page 6 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 • Require uniform monumenting of land divisions and conveyance by accurate legal description; • Implement the goals, objectives and policies of the Auburn comprehensive plan Staff Comment The proposed preliminary plat meets the general purposes,of the Land Adjustment and Divisions Chapter of the Auburn City Code. The proposed lot size meets the R-5 zone regulations of a minimum of 6,000 square feet per lot and an average lot size of 8,000 square feet. The lots in the vicinity vary in lots size from 6,054 square feet to 13,972 square feet. As mentioned under Comment 1, the proposed plat makes adequate provisions for water, sewer, storm drainage, fire access, and ingress/egress. Addressed under Comment 2 is how the project complies with the Auburn Comprehensive Plan. The proposed preliminary plat will develop 24 single family residential lots providing housing for citizens of the state and city. 5. Conformance of the proposed subdivision to the Auburn zoning ordinance and any other applicable planning or engineering standards and specifications as adopted by the city, or as modified and approved as part of a previously approved PUD. Staff Comment The proposed project meets the regulations outlined in ACC Section 18.07.030. The lots are designed to meeting the following requirements: • Minimum lot width of 50 feet • Minimum lot size of 6,000 square feet with an average lot size of 8,000 square feet = the smallest lot is 6,054 square feet, the largest lot is 13,972 square feet, and the average of all the lots is 15,600 square feet. • The future single family residences will be required to meet the minimum setbacks and lot coverage outlined in ACC 18.07.030. The cul-de-sac roads, sidewalks, storm drainage facilities, and sewer mains will be required to meet the City's Design and Construction Standards. These facilities are reviewed as part of the facility extension, grading, and civil plans to be submitted by the applicant. 6. The potential environmental impacts of the proposed subdivision are mitigated such that the preliminary plat will not have an unacceptable adverse effect upon the quality of the environment. Staff Comment The applicant proposes a tract, 38,379 square feet in size, for a detention facility (Tract "E"). The revised preliminary storm report submitted on March 21, 2011 states that "although historically, there have been drainage related complaints downstream from the project sites, it appears that with the construction of the Span Alaska site, that runoff from the site does not reach 287th Street where historically, the majority of complaints have originated. Project runoff will be collected and released per the Manual's requirements (sizing per the Western Washington Hydrology Model) which releases runoff at or below pre-developed runoff rates. During construction, standard sediment and erosion control methods will be utilized. This will include the use of a stabilized construction entrance, a perimeter silt fence, and other necessary measures to minimize soil erosion during construction." The applicant proposes to construct the detention pond at an elevation of 269 feet. Staff concurs with the analysis performed by Earth Solutions in the Geotechnical Engineering Study, dated December 20, 2010, and in the letter dated February 22, 2011, by geologist Scott Riegel who states "in our opinion, the detention pond location is feasible from a geotechnical standpoint. Subsurface flow rates within the proposed detention pond would be very low. The sand layer present within the current pong location is isolated, and limited to the margins of the seasonal stream located to the south and Page 7 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 east. In our opinion, the detention pond will not affect the stream flow patterns because the pond is essentially isolated from the surrounding soil via a liner." The property has two wetlands,that are classified as Class 3 wetlands by the Auburn City Code Chapter 16.10 Critical Areas. The applicant is required to buffer the wetlands with a minimum of 25 feet. The applicant complies with this requirement and proposes to put both wetlands into "sensitive area" tracts, one 34,175 square feet (Tract "D"), the other 7,593 square feet (Tract "A"). As no impacts to the wetlands are proposed, no mitigation will be necessary. Pursuant to Auburn City Code 16.10.090.E.f long term protection of a regulated wetland and its associated buffer shall be placed in a separate tract on which development is prohibited (as proposed by the applicant) or protected by execution of an easement dedicated to the city, a conservation organization or land trust. The location and limitations associated with the wetland and its buffer shall be shown on the face of the deed or plat applicable to the property and shall be recorded with the King County recording department. The applicant proposes to discharge treated storm water runoff into the wetlands. Staff concurs with the analysis performed by Habitat Technologies and submitted in a Critical Areas Report, dated December 7, 2010, and documented in a letter, dated March 7, 2011 which states "With both an understanding of the physical and biological conditions of the onsite wetlands and an understanding of the proposed discharge of seasonal surface water into these wetlands as the 2-year, 10-year, 25- year and 100-year storm events it is the opinion of Habitat Technologies that these release volumes would not adversely impact the retained wetland areas or adversely impact local water quality. The placement of stormwater outlet structures along the outer boundary of the established buffer would also utilize Best Management Practices for discharge dissipation to further protect the retained wetland area." The applicant also proposes to place 43,847 square feet into a "sensitive area tract" to protect steep slopes with a fifteen foot (16) buffer. This tract, Tract "B" is proposed at the southeast corner of the property and the creation of the tract will protect the majority of large conifers over 8" in diameter, and will protect the slope and lessen the overall erosion potential of the sloped area of this proposed subdivision. 7. Adequate provisions are made so the preliminary plat will prevent or abate public nuisances. Staff Comment Adequate provisions are made so the preliminary plat will prevent or abate public nuisances. The applicant has laid out the preliminary plat so that the proposed plat is congruous with the existing neighborhoods in the immediate surroundings. The established neighborhoods across the streets are generally subdivision developments of lots under a quarter of an acre. The applicant proposes to place the steep slopes that are located at the south east of the property into a "sensitive area" tract (Tract "B") that will not be developed and will be protected by the required buffer zones. This tract will serve to maintain the majority of the large diameter conifers that visually buffer the nearby electric power lines. The applicant is proposing to place the two wetland properties into "sensitive area" tracts (Tracts "D" and "A") that will not be developed, and will be protected by the required buffer zones. MODIFICATION OF STANDARDS - ACC CHAPTER 17.18 Pursuant to this chapter, modifications can be made to standards or specifications if the modification meets the requirements of ACC 17.18.030. The applicant has requested the following two modifications (Exhibit 9): The applicant requests a deviation from the Design Standards Table 10-3, Miminum Intersection Spacing which requires residential and non-residential collectors have a spacing of 250 feet. The applicant proposes a road layout which provides 194 feet between the centerlines of 298th and Page 8 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 the proposed 299th in order to maintain usable space between the southern boundary of the plat and 299th. The applicant also requests a deviation from the Design Standards Table 10-1, Roadway Width which requires the roadway width of a Residential Collector to be 34 feet (one lane in each direction with a center turn lane). Staff Comment Staff can support the analysis put forth by the applicant that "the purpose of providing minimum intersection spacing is to ensure that opposing left turns do not cause an unsafe driving condition and to ensure that queue lengths for left turns into the respective streets do not interfere with one another. The 298th eastbound traffic left turn movement heads north onto 64th, and the 299th westbound traffic left turn movement heads south onto 64th. With 298th being north of 299th, the opposing left turn scenario is not applicable as the left turn movements do not intersect. The current volumes on 64th are at a negligible percentage of the traffic volumes that classify a Residential Collector (per a meeting with Joe Welsh, February 4, 2011, City of Auburn). These low volumes coupled with the fact that only 23 homes front 298th and 39 homes will be utilizing 299th (this will be less as the surrounding parcels develop and more accesses are created) lead us to determine that the left turn queue lengths for these streets will not impact one another and the reduced intersection spacing will not create an adverse impact on public safety." The deviation to the width of the Residential Collector can also be supported by staff, as the applicant does not proposed to reduce the width of the Residential Collector, but proposes to eliminate the required middle turn lane, in order to accommodate a six foot bike lane. The following statement was made by the Engineering department traffic reviewer "Based on a review of the City's 2015 and 2030 traffic model, the elimination of turn lanes in the road design for the intersections of 64'h Avenue South and South 298th Place and South 299th Street, as well as the provision for a single through lane in either direction on 64th Avenue South is supportable due to the projected traffic volumes in the vicinity." The modification requests do not lessen the requirements of the zoning ordinance and are consistent with the purpose of the Land Adjustments and Divisions title. NEIGHBORHOOD CIRCULATION PLAN ACC 17.16 The neighborhood circulation plan shall show the following: 1. Planned Street System. The planned street system must be compatible with the city's comprehensive transportation plan. Development which is proposed in areas of the city which have a planned street system which is a part of the comprehensive plan or the city's six-year plan, and any other street plan, shall make provisions for such streets and must not cause implementation of such street plans to become unattainable. 2. Nonmotorized Transportation Routes. Preliminary plats and binding site plans which are proposed in areas of the city which have planned routes or facilities for bicycles, equestrian, or other nonmotorized transportation mode which is a part of the comprehensive plan or the city's six-year plan, and any other street plan, shall make provisions for such routes and must not cause implementation of such routes to become unattainable. 3. A nonmotorized circulation system shall be integrated into the overall subdivision and surrounding area. a. When abutting vacant or underdeveloped land, new development shall provide the opportunity for future connection to its interior pathway system through the use of pathway stub-outs, building configuration, and/or parking lot layout. The proposed location of future nonmotorized and pedestrian connections shall be reviewed in conjunction with applicable development approval. b. Developments shall include an integrated nonmotorized circulation system that connects buildings, open spaces, and parking areas with the adjacent street sidewalk system. Page 9 of 11 Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 c. Pedestrian connections to existing or proposed trails/pedestrian routes on adjacent properties shall be provided unless there are physical constraints such as sensitive areas that preclude the construction of a pedestrian connection Staff Comment The proposed preliminary plat for a subdivision of 24 single family homes will include pavement improvements including: the creation of South 299th Street, 67th Avenue South and South 298th Place. Also, 641h Avenue South will be improved to City of Auburn standards. The planned street system is compatible with the City's Comprehensive Transportation Plan. 64th Avenue South is existing right-of-way but not improved. As part of the project, 64th Avenue South will be constructed to local residential street standards. Sidewalk will be constructed as part of the improvements to 64th Avenue South and the internal plat roads providing pedestrian access within the neighborhood. Per the review of the Traffic Engineer during the pre application conference held on October 6, 2010, a traffic study was not required for this project. However, the project will add approximately 24 new PM peak hour trips to the transportation network. The applicant was informed of the current traffic impact fees ($3,882.61 per new residence) at the October 6 meeting. Traffic impact fees are assessed at building permit issuance or can be deferred if the applicant complies with Ordinance No. 6341. RECOMMENDATION Based upon the application, the Findings of Fact, and Conclusions of the staff report, staff recommends that the Hearing Examiner APPROVE the Preliminary Plat with the following seven (7) conditions of approval: 1. On-site drainage flows will be engineered to funnel to the proposed Tract "E" detention facility, which will be engineered to allow water to flow into the existing wetland in proposed Tract "D" at no greater flow than the existing flows from the property. 2. The applicant shall provide sewer stubs to the parcels adjacent to all sewer main extensions. 3. Half street improvements shall be required for 64th Avenue South in accordance with City Design and Construction Standards. 4. The final Plat of Wyncrest will carry a plat condition requiring construction of the emergency access, in accordance with City standards, when the number of lots utilizing said access reaches 25. 5. All tracts not dedicated to the City of Auburn shall be maintained by the future Homeowners' Association. 6. If generated, the proposed Conditions, Covenants and Restrictions (CC&Rs) for the future Homeowners' Association shall be submitted for review and approval by the City prior to final plat approval. This document shall specify the financial means of maintenance of all common open spaces. 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 EXHIBIT LIST Exhibit 1 Staff Report Exhibit 2 Vicinity Map and Zoning Map Exhibit 3 Preliminary Plat Application Materials Exhibit 4 Preliminary Plat Site Plan dated December 22, 2010 and revised on May 13, 2011 Exhibit 5 Notice of Application, affadavit of publication and published notice Page 10 of 11 . Agenda Subject: Wyncrest Preliminary Plat; PLT10-0010 Date: June 24, 2011 Exhibit 6 Combined Notice of Determination of Non-significance and Public Hearing Notice, affadavit of:publication and published notice Exhibit 7 Environmental Checklist and Staff Evaluation and letter from the Department of Fish and Wildlife'dated June 27, 2011 Exhibit 8 Certificate of WaterAvailability - Lakehaven-Utility . District Exhibit 9 Certificate of SewerAvailability Lakehaven Utility District Exhibit 10 Storm Drainage Report and Offsite Analysis, prepared by Preferred Engineering, LLC dated November 22; 2010 Exhibit 11 Critical Areas Report dated December 7, 2010 and supplemental memo dated March 7, 2011 Exhibit 12 Geotechnical report dated December 20, 2010, and supplemental memo dated February 22, 2011 Exhibit 13 School Walkway Analysis prepared by DR Strong Consulting Engineers, dated November 22; 2010 and Revised on March 21,2011; and supplemental email dated March 21, 2011 Exhibit 14 Road standard deviation request dated March 21, 2011 Page 11 of 11 - Exhibit 2, Number of Pages _ PLT10-0010 Wyncrest Preliminary Plat is- r Oa21049D77 83 1582600093 ` N g1 J I': t i~ ! 1,982600065 q22, 0221033003 _ i n r y r ,0221049093 - L u L` 1~ 9157 ~ ' ; 1 L-.i 1 ( NL; . 1V wJ :m j ~t M ~l J - / p225 - I 11550600028- S -1 o ~1 rr ` ` 0 1`' '0221049006 cv 0221049071 V . . ;iJ r ,'l r-^-: 1 j, by c - ~ y J ~ ~ 1580600033 I G- 0221049044 G to Oz, 0221049007 n ~Oj I I I _ rf '-'T C.~ ""t. L• +1r r ~.Qd'~ I I O i 1580600050 r : s r op L 0221049008 ? \ 1580600012 1-1 0 ' I ' I - 7^ 1 0221A49003 - ' l :i.. 1~rr7 -l - L; ~ 'L580600011~; ; y~; r g 0(]7 1580600022 I ! SUbjed properties ^ ^'KS' f c L. Cf I ~v [tbb r /rfti ..T- 0221049038 ^ -y - n r~ r. ` T 0221049062 _ I ; 1-980600090 022 9149 r h , J 1580600096 I r7 I ^ is 0 , - y J I G t i J 0221049062 ! r JY J - 1 - - N 0221049049 °J I:I _r. m OI I ~h i i Gq1 0221049027 i_ ri N N 94g0 0221 05fi ~'::;.':'....I I I N , t } , l No oN X104 045 0/21049735 ° Printed Datc:6l24l7k11 w Parcels Map Created by Citycf Auburn CGIg Information shown is for general reference SUildIR9S purposes only and does not necessarily represent exact geographic or cartographic data as mapped. The City of Auburn makes no warranty as to its accuracy. O R 583 x t PLT10-0010 Wyncrest Preliminary Plat zoning 0221049077 4 50,600093 f 1 rl ~ l T _ _ I V' pLZti~ 02210490031 .-1 I 1582600065 1049098 4 r__ I l_ D, >I ue 1 ~l ~S E ,,022 _ - - ~ ,nU~ . ~,C U - u " rL• l1 I 1 _ • , - I _ il_, Drz2104'~ ~ i i u - - ? G f ~J J -r } 1 5 806 00 02 8-1 - ° '0221049006 r- n 0221049071 590600033-J7 } 0221049044 fJ 0221049007 $ " -7 ~C' U r L w ~l o I 158060005D I F I k I~ C_i I : " fi U 0221049008 o~~ C: U - - S! 1580600012 `tJ o L L I _I L Si n J 0221;0490 F r 4u D(I~ 1560600011[j I r~ l F, Yr 1 g 15$0600022 Subject properties rC"_ _ ; ~I L cv tie", ti t r l• J 4~ I- Cg 1 t1 f~ R:n r' .f S ~I ~j v t~Z , `1580600095 Pti . 0221049062 022 1 04 903 8 \ f 1580600090 ` 0221 i' ' J I ' ti. r f I' r n 15806000961\ fir' ~d `'p ~ ,t ' i ' ~ ' I rr, i + i~ v n .1" O }d - G221049062 I _ ^0221049049 Q J 1 ~.Z a 01.2.104903 u -1 i 1 L J G2210490127 i) .Y C-~ J q •ti i ' `J.ti r ,I , a G,y~100.9'180 0221049056 0121049036 I or c U r - Printed Date:6/24/2011 Parcels Map Created by City of Auburn eGIS w E information shown is for general reference purposes only and does not necessarily Zoning Buildings rep resent exact ata as mapped. The City geographic of A cartographic no s Zoning d C1 Light Commercial District warranty as to its accuracy. C] C2 Central Business District Oft 583 C C3 Heavy Commercial District l'~ Exhibit 3, Number of Pages 36 CITY OF AUBURN tc 1 o WYo= Department of Planning. Building & Community FILE Auburn Clly Hall, 24 Floor PILE NAME:_ IVASHING70N 25 West t , - Auburn, WA 9a001o1-499a ftm~ mom Aft Tel: 253 931 3090 TYPE' RECEIVED BY; Fax: 253 804.31 14 FEE PAID: CHECKICASN: permltcenlerCauburnwa gov w Ne auburnwa gov SUBMITTAL DATE: DEC 2 2 2010 LAND USE DESIG: I'C'Y 'r -7 AIIJ UR TYPE IH PRELIMINARY SUBDIVISION (PLAT) APPLICA ITCENT R APPLICANT: ,Use mailing address for eeting notification ACheck box if Primary Contact COMPANY: ~Y1~1 ~2Y em ADDRESS: (v~l n - so xlnt~er ~t~ol ~u!'i-~ (CITY, STATE, ZIP) 1 W qr2l E-MAIL: !(V ~C~RYI~PJI•G~ti°r tP~.~O PHONE: ?-o(Q~22--1 FAX: SIGNATURE-"- ! - -F PRINTED NAME:% (Signature eaquired) APPLICANT'S REPRESENTATIVE: ❑ Check box if Prima(` Contact COMPANY: - V I- S I C Cv`Y1 SVi ~ llr` °l~ 1 Vt. ADDRESS: 10 U I j J, (CITY, STATE, ZIP) ~1,> E-MAIL: <it V Q 'L G~VS r~tt Cam) PHONE: I7FAX.: SIGNATURE: +ga i ie PRINTE D NAME: Ci11R Y nk & e RequPR OPERTY OWNER(S): ❑ Attach separate sheet if needed ❑ Check box if Primary Contact COMPANY: S Gi6'~l e. t1l S abou~i rr~ >~i~1~`. vi ADDRESS: (CITY, STATE, ZIP) PHONE: FAX: E-MAIL: SIGNATURE: PRINTED NAME: (Signature Required) Note: Applicant or representative must have property owner's consent to file this application form in order for it to be accepted PROPERTY INFORMATION (REQUIRED) SITE ADDRESS: 114+y - (fl~~l T}}~fi• ASSESSOR'S PARCEL. ID4 LOT SIZE- ZONING DISTRICT OZ~117~ cl 0 ~1y I ~ - - PROPOSED USE OF SITE: r', l b22t t1 __~2l ~~11 ~ ~I ozal o¢- 40r~ tzI AREA TO BE DEVELOPED (s,f.): 2W ►21~ EXISTING USE OF SITE: G:1PermH CenlerWPPLICAT1OI,'S_FORIASXPtanning Forms12009 FORtASIPreSm naryPlat_Subdhj;sion_ AppForni 2009 dm 9119/2009 3 arroF _ - - CITY OF AUBURN PRELIMINARY SUBDIVISION (PLAT) WASHiKTON Reparlment of Planning. Building 8 Communlly APPLICATION ~r Auburn City Hall, 2nd Floor 25 West Main Street Auburn, WA 98001-4998 Tel: 253.931.3090 Fax: 253 004.3914 permllcenler@auburnwa gov wm auburmva gov `HYPE IN PRELIMINARY SUBDIVISION (PLAT) AUTHORIZATION LETTER FROM PROPERTY OWNER GRANTING AUTHORIZATION TO ACT ~ 1of this letter Must be submitted for each property owner involved) (A copy I, r>/iY9P~i~~`~ 4211 being duly sworn declare that I am the owner of the property (PROPERTY OWNER) involved in the application I hereby grant ~72~- of 4Na Z U to act on my behalf. 41 r a I certify under penalty of perjury declare that all statements, answers, and information herein submitted is in all respects true and correct to the best of my knowledge and belief. agree to hold the City of Auburn harmless as to any claim (including costs, expenses and attorney's fees incurred in the investigation of such claim) which may be made by any person, including the undersigned, and filed against the City of Auburn, but only where such claim arises out of the reliance of the City, including its officers and employees, upon the accuracy of the information provided to the City as part of this application. I further agree that the City of Auburn staff may enter upon the subject property (ies) at any reasonable time to gain familiarity with site conditions and to take photographs and to post public notices, if applicable: n Printed Na le n"ECEIVED 1AA 'N - 5) Signa r Date ' L I Address Subscribed and sworn to before me this. day of A2C NINA M' COL MAN Notary Public in and for the State of Washington, P~tB IC t ; ~~e HINGTON 'NA [ ReSidi g at Plyh y G."Perml CenlertAPPI.ICATIONS_FORIASnanntng Forms=09 FOP.MSWreLminay Plat Sub&A5!on_,AppForm 2D09 do. 1011912009 4 `m"DF ; MU CITY OF AUBURN PRELIMINARY SUBDIVISION (PLAT) Alf-i - < WASHINGTON Department of Planning, Building & Community APPLICATION Auburn City Hall, 2nd Floor 25 West Main Street Rt~,C~~j Auburn, WA 98001-4996 Tel: 253.931.3090 V~o Fax: 253.804.3114 , permitcenter@auburnwa.gov G wAy.auburmva.gov TYPE III PRELIMINARY SUBDIVISI { 07 XT) LAND SURVEYOR'S CERTIFICATION NAME OF SUBDIVISION: ~yyft~Gs'~ REGISTERED LAND RVEYOR (COMPANY) NAME (INDIVIDUAL) L 010047 Sit l l o~~ . X1`7. --3 a(0* STRE T ADDR SS TELEPHONE CITY STATE ZIP E-101\11- ENGINEER avid i , (COMPANY), J J' NAME (INDIVIDUAL) 10104- +V~.?arT STREET ADDRESS TELEPHONE j~i Y r-ja v A \Lh m ah ex-. 1 OVl~l1 ~d~S'~roV1d1. c o yy► CITY STATE ZIP E-MAIL J APPLICANT (COMPANY) NAME (I IVIDUAL) ;7910 sourM~ev►fi~r IR71 1d sVJ1 t tv STREET ADDRESS TELEPHONE, Tt~lwi 1a~ W °143 v tn~idrerLtow+es. ~v►~ - CITY STATE ZIP E-MAIL )1200 Land Surveyor's Certification Land Surveyor I hereby certify that the accompanying plat E~ J has been inspected by me and conforms to all h~Q OF y~ rules and regulation"f the platting r doiution F~ and standards,fo taf;ur 1, Wash~'n n. o f n ~ o f o.. SIGNED ! > 5`q J~ < i ER JQ DATE / 0 Nq L L ANp S G:1Permh Center\APPLICATiONS FORMS1Pfanning Forms12009 FORIASTrefiminary Plat-subdivision- Apfform_2009.doc 10/1912009 6 ` CITY OF AUBURN PRELIMINARY SUBDIVISION (PLAT) - L 'N WASHINGTON Dapartment of Planning, Building & Community APPLICATION Auburn City Hall, 2"6 Floor 25 west Main Street Auburn, WA 980D1-4998 Tel: 253.931.3090 Fax: 253.804.3114 parmitc,enter@auburnwa.gov wvni.auburnwa.gov P AUeU TYPE III PRELIMINARY SUBDIVISION (PLAT) APPLICA g I m CONCURRENT APPLICATIONS Please indicate whether you are submitting one or more concurrent applications with this application by checking one or more of the boxes below: Type I Applications El Temporary Use Permit ® Special Exceptions (administrative decisions made by the city which are not (administrative) subject to environmental ® Utility Permit ® Special Home review under the State Occupation Permit Environmental Policy Act Type II Applications ® Substantial Shoreline [SEPA]): (administrative decisions Development Permit made by the city which ® Administrative Use Permit include threshold ® Surface Mining Permit Boundary Line Adjustment determinations under SEPA: ® Temporary Use Permit LJ Boundary Line Elimination ® Administrative Use ® Variance Permit 13 Building Permit Type IV Applications - ® Excavation Permit ® Building Permit quasi judicial decisions made by the city council ® Flood Control Zone Permit ® Grading Permit following a recommendation by the ®Grading Permit Land Clearing Permit hearing examiner: ® Public Facility ® Rezone (site-specific) Home Occupation Permit Extension Agreement Land Clearing Permit LJ Short Subdivision OTHERS - as may apply: ® Mechanical Permit SEPA Type III Applications (quasi-judicial final ® SHORELINE EXEMPT ® Plumbing Permit decisions made by the Public Facility Extension hearing examiner Agreement following a recommendation by staff: Right-of-way Use Permit ® Conditional Use Permit Short Subdivision ® Special Permit Preliminary Plat GAPermh CenterlAPPLICATIONS_FORNS%Planning Forms12009 FORFAMPreliminary Plat Subdivision_ AppForm_20D9.doc 10/1912009 5 CITY Or,; 5=':- CITY OF AUBURN PRELIMINARY SUBDIVISION (PLAT) AV.B_:V l~ V (CAT(®N WASHINGTON Department of Planning, Building & Community Auburn City Hall, 2nd Floor 25 west Main Street Auburn, wA 98001-4996 Tel: 253.931.3090 Kt: Fax: 253.804.3114 ermitcenter aubumwa. ov f vA,Av.aubumw .gov 9 TYPE I" PRELIMINARY SUBDIVISION (PLAT) Air" PLI N SUBMITTAL CHECKLIST DIGITAL COPIES OF WRITTEN MATERIALS AND PLANS & GRAPHICS Please provide one or more labeled readable compact discs containing digital versions of all submitted M/ written materials and plans and graphics for use by the City of Auburn during the development review process for staff report preparation and public noticing. Written materials should be submitted to be compatible with Microsoft Office desktop software products. Plans and graphics should be submitted in pdf or of format. APP (CATION FEES - Make checks payable to the City of Auburn All application fees, including, but not limited to: Preliminary Plat Fee, Valley Regional Fire Authority (VRFA), Hearing Examiner Fee(s), SEPA Fee(s), and Posting Board Fee. Some fees will not be invoiced until actual costs are known. (See Current City of Auburn Fee Schedule). WRIT EN MATERIALS - Total of ten (10) copies unless otherwise noted A. APPLICATION FORM. Provide a completed application form signed by the property owner(s) and/or applicant with the completed Application Submittal Checklist. (One original and 9 copies) V.B LETTER OF AUTHORIZATION. Provide one original letter of authorization to act contained with this application packet inclusive of all required signatures and notary information and seal. C. CONCURRENT APPLICATIONS FORM Identify applications that are being submitted concurrent with the subdivision application and concurrent review of a SEPA environmental checklist. Rr D LAND SURVEYOR'S CERTIFICATION Provide one original signed and sealed Land Surveyor's Certification as contained within this application and completed by a professional land surveyor El/ E. LEGAL DESCRIPTION. Provide on a .separate sheet a legal description of the property to be subdivided. The legal description shall be prepared by a professional land surveyor registered in the State of Washington. dF, TITLE REPORT (2 Copies) with liability for errors not to exceed the assessed value of the lots on the date of application. The title report shall be issued no more than 30 days prior to the application date (available from a Title Company). The City may request an updated title report prior to preliminary approval at its discretion. d G PRELIMINARY SUBDIVISION APPLICANTIONSUBMITTAL CHECKLIST - Addressing Written Materials and Drawings with Plans. 6:1Permh CenleriAPPLICATIONS FORMSTIanning Forms120D9 FORMSU'reliminary Plat Subdivision_ AppForm_2009.doc 1011912009 7 PRELIMINARY SUBDIVISION (PLAT) APPLICATION M. SOIL ANALYSIS REPORT (6 copies). Prepared by a geologist or soil scientist registered in the State of Washington, unless determined by the City Engineer to not be required. The City Engineer may make this determination prior to application submittal as part of a pre-application conference meeting request or as part of coordination on this issue with the applicant or applicant's representative prior to application submittal. ❑ Soils Analysis required and attached. ❑ Soils Analysis is not applicable as determined by the City Engineer ❑ Don't know 2/N. EVIDENCE OF WATER/SEWER AVAILABILITY. If the property is located within the City's Water and/or Sanitary Sewer Service Area, the city shall confirm the applicability of utilities as part of the preliminary plat review process. If the property is located outside the City's Water or Sanitary Sewer Service Area, application shall include evidence of water and/or sanitary sewer availability from the purveyor or evidence of approval from King County or Pierce County Health Departments for any well and/or on-site sewage disposal system(s) adequate to accommodate the proposed development. Where any lot is proposed to be served by an on-site sewage disposal system, results of preliminary percolation tests for each such proposed lot, conducted under the applicable county department of health rules and regulations, shall be submitted. ❑ Water Service by City ❑ Sanitary Sewer by City ❑ Water and/or Sewer Service by another agency and Availability Certificate attached. ❑ On-site sewage disposal system planned and County Health approval attached. ❑ On-site well planned and County approval and well covenant are attached. ❑ O. RESTRICTIONS. Provide documents containing applicable restrictions, if any, to be imposed upon the use of the land. Such restrictions must be recorded simultaneously with the subdivision. dP. PRE-APPLICATION CONFERENCE SUMMARY NOTES. Provide one copy of the Pre- application Conference summary notes if a pre-application conference meeting was held. F1 Q. NEIGHBORHOOD REVIEW MEETING DOCUMENTATION. Submit required documentation for neighborhood review meeting required by ACC 18.02.130, if applicable. Neighborhood review meetings are required by ACC 18.02.130.6 for residential subdivision project comprising forty (40) or more lots or units; or multi-family residential project comprising forty (40) or more units; or mixed- use development project comprising forty (40) or more units. R. WRITTENIPLAN/GRAPHIC EVIDENCE OF COMPLIANCE TO MULTI-FAMILY/MIXED USE DESIGN STANDARDS AND INFILL STANDARDS. If applicable to the proposed project, submit required written and plan/graphic documentation demonstrating compliance to the applicable design standards for multi-family or mixed use development contained within the City of Auburn "Multi- Family/Mixed Use Developments Design Standards°. If infill standards apply, submit required written and plan/graphic documentation demonstrating compliance with ACC18.25. GAPermil CentervaPPLICATIONS_FORMSWianning Forms=09 FORMSWretiminary Plat_subdMsion_ AppForm_21m9.doc 10119/2009 9 PRELIMINARY SUBDIVISION (PLAT) APPLICATION c. Density - proposed dwellings per net acre d. Gross acreage e. Net acre area (list f. Minimum number of dwelling required. (Minimum Density X Net Acres) g. Maximum number of dwellings allowed (Base Density X Net Acres) ® h. Bonus Density Credit (if proposed) i. Existing zoning designation j. Proposed zoning designation k. Approximate area of smallest lot 0/16. Blank 4" X 4" box for City date and other stamps. ~7. Date plan was prepared and space for revision dates for subsequent resubmittals. V, 8. Vicinity Map: A vicinity map sufficient to define the plat location and boundaries. NI/C. PRELIMINARY PLAT DRAWING - GRAPHIC REPRESENTATION The Preliminary Plat Drawing must be prepared by a professional land. surveyor licensed in the State of Washington and the folio' g graphic features shall be shown on the drawing: 9. Indicate boundaries of the subdivision by a heavy line. Use heavier line weight for streets so they will stand out from the lots and contour lines. ~2. The boundaries and approximate dimensions of all proposed lots and tracts to the nearest foot, Include the square footage of each. Identify all lots proposed to be created by lot number and tracts by alphabetic identification, together with the purpose of the tract. Also include the location, width, and purpose of each new easement to be created. 3/`3. Location, widths, and names of all existing or proposed streets, public ways, or private streets within or adjacent to the plat. (City will assign street names after initial review of application and plat) Location of storm water quality/detention facilities. Location of Critical Areas, and Critical Area Buffers. Location of public and private parks, and open space areas ~/7. The location of existing section and municipal corporation boundary lines lying within or adjacent to the proposed subdivision. d8. The boundaries of any adjacent property under the same ownership as the land to be subdivided. All existing property lines lying within the proposed subdivision which are to be vacated. - 10. Where the property has been previously subdivided, the original lots, blocks, street easements, etc., shall be shown in dotted lines in scale with the proposed subdivision. GAPermil CenterlAPPLICATIONS_FORMS%Planning Forms52009 FORMSWreliminary Plat Subdivislon_AppForm 2009.doc 10/19/2009 11 PRELIMINARY SUBDIVISION (PLAT) APPLICATION 3." Contour lines at 2-foot intervals when slopes are 5% or less and 5-foot intervals for slopes exceeding 5% within the boundaries of the proposal. Contour lines shall be labeled at intervals not to exceed twenty (20) feet, and shall be based upon current City Datum in accordance with the City's Engineering Design Standards. Existing contour lines which will be altered through filling or excavation shall be indicated by broken lines(final contour lines shall be indicated by solid lines). 4. The conceptual grading/clearing plan must identify grading required on site and within proposed or existing right-of-way. ~5. Contours for critical area features must be sufficient to accurately determine the existing character and extent of proposed change. VF. CONCEPTUAL UTILITY PLAN - Water, Sewer, Storm and Other Provide a conceptual utility plan prepared by a professional engineer licensed in the State of Washington showing all utility infrastructure needed to serve the subdivision and/or methodology prepared in accordance with the City's comprehensive plans, engineering standards or ordinance requirements. The conceptual utility plan shall include information to ensure that utilities can be constructed consistent with the preliminary plat layout and that the facilities will ultimately meet City design requirements including ade ate maintenance and repair access. The Plan shall specify the following information: . Background grading contours and adequate horizontal and vertical datum. I :fi 2. The location of all existing and proposed ditches culverts catch basins and other parts of the design for the control and conveyance of surface water drainage; and existing and d3. proposed water quality facilities. The location of tracts or easements (or other areas) dedicated for retention, detention, and drainage facilities. U/`4. The location and size of existing sanitary sewer, storm sewer, and water lines or other utilities lying within or adjacent to the proposed subdivision. ~5. The location, size and vertical profile for all proposed sanitary sewer, storm sewer, and water lines or other utilities to serve the proposed subdivision. The location of any well used for domestic water supply existing within the proposed subdivision or within one hundred (100) feet of the boundaries of the proposed subdivision. The location of other utilities other than those provided by the City. ~~8. If electrical transmission lines cross the subject property, show locations of poles and towers. Identify overhead electrical, and other facilities that are required to be undergrounded. Place all regional utility lines crossing the site in tract(s) or easements. 10. Identify any non City facilities, such as: booster stations, PVR's, wells, or lift stations proposed to serve the proposed subdivision. G:1Permil Cenler%APPLICATIONS_FORMS1Planning Forrns12009 FORMS\Preliminary Plat_SubdMslon_ AppForm_2009.doc 10/1912009 13 PRELIMINARY SUBDIVISION (PLAT) APPLICATION c. Pedestrian connections to existing or proposed trails/pedestrian routes on adjacent properties shall be provided unless there are physical constraints such as critical areas that preclude the construction of a pedestrian connection. d. Show walking conditions and planned improvements for students who only walk to and from school for a residential subdivision (RCW58.17.110). Ed/H. LANDSCAPE PLAN The Landscape Plan shall be prepared by a professional landscape architect licensed in the State of Washington showing existing wooded areas, meadows, rock outcroppings, proposed and required buffers, open spaces, street trees, significant trees, ornamental landscaping, and other landscape features. The Plan shall identify areas to be cleared and those significant trees to be retained and those to be removed. This plan needs to include background information, including: sight distance triangles, proposed utilities, driveway access, and street lighting to show that all required improvements can be met by the proposed subdivision. F1 I. PHASING PLAN If applicable show divisions of the plat and a proposed timetable for construction of each division. Including the phasing of the public improvements required to serve each phase of the project and how each phase will individually meet City standards and requirements. (ie may need to extend utility improvements beyond phase lines to complete looping or to reach appropriate terminus points of the utility systems.) DECISION CRITERIA FOR SUBDIVISIONS The following State and City Codes comprise the main factors to be considered in review of a subdivision application. To assess compliance of the subdivision with these codes, the City relies on policies, codes, special studies, SEPA and other applicable documentation. This list does not include all possible applicable codes. RCW 58.17,110 - Approval or disapproval of subdivision and dedication - Factors to be considered Conditions for approval - Finding - Release from damages (1) The city, town, or county legislative body shall inquire into the public use and interest proposed to be served by the establishment of the subdivision and dedication. It shall determine: (a) If appropriate provisions are made for, but not limited to, the public health, safety, and general welfare, for open spaces, drainage ways, streets or roads, alleys, other public ways, transit stops, potable water supplies, sanitary wastes, parks and recreation, playgrounds, schools and school grounds, and shall consider all other relevant facts, including sidewalks and other planning features that assure safe walking conditions for students who only walk to and from school; and (b) whether the public interest will be served by the subdivision and dedication. (2) A proposed subdivision and dedication shall not be approved unless the city, town, or county legislative body makes written findings that: (a) Appropriate provisions are made for the public health, safety, and general welfare and for such open spaces, drainage ways, streets or roads, alleys, other public ways, transit stops, potable water supplies, sanitary wastes, parks and recreation, playgrounds, schools and school grounds and all other relevant facts, including sidewalks and other planning features that assure safe walking conditions for students who only walk to and from school; and (b) the public use and interest will be served by the platting of such subdivision and dedication. If it finds that GlPer mt Center%APPLICATIONS_FORMSTianning Forms%2009 FORMStPreliminary Plat SubdMsion_ AppForm_2009.doc 10/1912009 15 LEGAL DESCRIPTION: PARCEL A: THE NORTH HALF OF THE SOUTHWEST QUARTER OF THE NORTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE 4. EAST OF THE WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON; EXCEPT THE NORTH 98 FEET OF THE WEST 230 FEET THEREOF; ALSO EXCEPT THE WEST 30 FEET LYING SOUTH OF SAID NORTH 98 FEET; AND EXCEPT THE EAST 15 FEET THEREOF. PARCEL F: LOTS 1, 3 AND 4, KING COUNTY SHORT PLAT NUMBER 283065, RECORDED UNDER RECORDING NUMBER 8401040734, IN KING COUNTY, WASHINGTON. TOGETHER WITH AN EASEMENT FOR INGRESS AND EGRESS AS DELINEATED ON SAID SHORT PLAT. r. CHICAGO TITLE INSURANCE COMPANY 701 FIFTH AVENUE, #2300, SEATTLE, WA 98104 A.L.T.A. COMMITMENT SECOND COMMITMENT SCHEDULE A Order No.: 1309598 Title Unit: U-06 Customer Number: SERRANO 10 PARCELS TO BE 202 LOTS Phone. (206)628-5610 Buyer(s): WYNCREST, LLC Fax: (20G)628-971.7 Officer: SAVIDIS/CAMPBELL/EISENBREY/HARRIS Commitment Effective Date: OCTOBER 11, 2010 at 8:00 A.M. 1 . Policy or Policies to be issued: ALTA Owner's Policy Anlount: $1 , 000, 000.00 STANDARD POLICY (6/17/2006) Premium: $1,048.00 SUBDIVIDER SALE - STANDARD RATE Tax: $ 99.56 Proposed Insured: SCHNEIDER HOMES I, L.L.C., A WASHINGTON LIMITED LIABILITY COMPANY Policy or Policies to be issued: ALTA Loan Policy Amount: $0.00 EXTENDED POLICY (6/17/2006) Premium: SIMULTANEOUS LOAN RATE Tax: Proposed Insured: 0- ;;n L Policy or Policies to be issued: ALTA Loan Policy Amount: $0.00 7 Premium: Tax: Proposed Insured: ' 2. The estate or interest in the land which is covered by this Commitment is: FEE SIMPLE 3. Title to the estate or interest in the land is at the effective date hereof vested in: BANK OF AMERICA, N.A., A NATIONAL BANKING ASSOCIATION 4. The land referred to in this Commitment is described as follows: SEE ATTACHED LEGAL DESCRIPTION EXHIBIT - COAiT1A805/KLC/ll.SAS CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE A (Continued) Order No.: 1309598 Your No.: LEGAL DESCRIPTION EXHIBIT (Paragraph 4 of Schedule A continuation) PARCEL A: THE NORTH HALF OF THE SOUTHWEST QUARTER OF THE NORTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON; EXCEPT THE NORTH 98 FEET OF THE CHEST 230 FEET THEREOF; AND EXCEPT THE WEST 30 FEET LYING SOUTH OF SAID NORTH 98 FEET; AND EXCEPT THE EAST 15 FEET THEREOF. (PARCEL B INTENTIONALLY OMITTED.) PARCEL C: THE NORTHWEST QUARTER OF THE EAST HALF OF THE SOUTHWEST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON. PARCEL D: THE NORTH HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE-4 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON; EXCEPT THE WEST 30 FEET FOR 64TH AVENUE SOUTH; AND EXCEPT THE FOLLOWING DESCRIBED PROPERTY: THAT PORTION OF THE NORTH HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHWEST CORNER OF SAID SECTION; THENCE NORTH 0°58'14" EAST ALONG THE WEST LINE THEREOF 75.00 FEET; THENCE SOUTH 89°44'13" EAST, PARALLEL TO THE SOUTH LINE OF SAID SECTION 205.00 FEET TO THE TRUE POINT OF BEGINNING OF THIS DESCRIPTION; THENCE NORTH 0°58'14" EAST 160.00 FEET; THENCE SOUTH 89°44'13" EAST 60.00 FEET; THENCE SOUTH 49°52'66" EAST 100.00 FEET; THENCE SOUTH 54°36'14" EAST 166.63 FEET; THENCE NORTH 89°44'13" WEST 275.00 TO THE TRUE POINT OF BEGINNING. PARCEL E: CLTACMAG/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE A (Continued) Order No.: 1309598 Your No.: LEGAL DESCRIPTION EXHIBIT (Paragraph 4 of Schedule A continuation) THAT PORTION OF THE NORTH HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER OF OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHWEST CORNER OF SAID SECTION; THENCE NORTH 0°58'14" EAST ALONG THE WEST LINE THEREOF 75.00 FEET; THENCE SOUTH 89044'13" EAST, PARALLEL TO THE SOUTH LINE OF SAID SECTION 205.00 FEET TO THE TRUE.POINT OF BEGINNING OF THIS DESCRIPTION; THENCE NORTH 0°58'14" EAST 160.00 FEET; THENCE SOUTH 89°44'13" EAST 60.00 FEET; THENCE SOUTH 49°52'66" EAST 100.00 FEET; THENCE SOUTH 54°36'14" EAST 166.63 FEET; THENCE NORTH 89°44'13" WEST 275.00 TO THE TRUE POINT OF BEGINNING; TOGETHER WITH AN EASEMENT 20 FEET IN WIDTH FOR INGRESS AND EGRESS TO 64TH AVENUE SOUTH OVER A PORTION OF THE NORTH HALF OF THE NORTHWEST QUARTER OF THE SOUTHEAST QUARTER OF THE SOUTHEAST QUARTER OF SECTION 2, TOWNSHIP 21 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, IN KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTHWEST CORNER OF SAID SECTION; THENCE NORTH 0°58'14" EAST ALONG THE WEST LINE THEREOF 75.00 FEET; THENCE SOUTH 89°44'13" EAST, PARALLEL TO THE SOUTH LINE OF SAID SECTION, 205.00 FEET; THENCE NORTH 0°58'14" EAST, PARALLEL TO SAID WEST SUBDIVISION LINE 160.00 FEET; THENCE SOUTH 89044'13" EAST, PARALLEL TO SAID SOUTH SUBDIVISION LINE 10 FEET TO THE TRUE POINT OF BEGINNING OF THE CENTERLINE HERIN DESCRIBED; THENCE NORTHERLY, PARALLEL TO SAID WEST SUBDIVISION LINE, 83.60 FEET, MORE OR LESS, TO A POINT 10 FEET SOUTHERLY OF THE NORTHERLY LINE OF SAID SUBDIVISION; THENCE WESTERLY, PARALLEL TO THE NORTHERLY LINE OF SAID SUBDIVISION 185 FEET, MORE OR LESS-TO THE EASTERLY RIGHT OF WAY LINE OF SAID 64TH AVENUE SOUTH AND THE TERMINATION OF SAID CENTERLINE. PARCEL F: LOTS 1 AND 2, KING COUNTY SHORT PLAT NUMBER 283065, RECORDED UNDER RECORDING NUMBER 8401040734, IN KING COUNTY, WASHINGTON; AND LOTS 3 AND 4, TOGETHER WITH AN UNDIVIDED INTEREST IN TRACT X, KING COUNTY CLTACMAG/RDA/M CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE A (Continued) Order No.: 1309598 Your No.: LEGAL DESCRIPTION EXHIBIT (Paragraph 4 of Schedule A continuation) SHORT PLAT NUMBER 283065, RECORDED UNDER RECORDING NUMBER 8401040734, IN KING COUNTY, WASHINGTON; PARCEL G: LOTS 1 AND 2, KING COUNTY SHORT PLAT NUMBER 883127, RECORDED UNDER RECORDING NUMBER 8412100260, IN KING COUNTY, WASHINGTON; TOGETHER WITH AN EASEMENT FOR INGRESS AND EGRESS AS DELINEATED ON SAID SHORT PLAT. r CLTACNIA6/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B Order No.. 1309598 Your No.: Schedule B of the policy or policies to be issued will contain exceptions to the following matters unless the same are disposed of to the satisfaction of the Company. GENERAL EXCEPTIONS A. Rights or claims of parties in possession, or claiming possession, not shown by the Public Records. B. Any encroachment, encumbrance, violation, variation, or adverse circumstance affecting the Title that would be disclosed by an accurate and complete land survey of the Land. C. Easements, prescriptive rights, rights-of-way, liens or encumbrances, or claims thereof, not shown by the Public Records. D. Any lien, or right to a lien, for contributions to employee benefit funds, or for state workers' compensation, or for services, labor, or material heretofore or hereafter furnished, all as imposed by law, and not shown by the Public Records. E. Taxes or special assessments which are not yet payable or which are not shown as existing liens by the Public Records. F. Any lien for service, installation, connection, maintenance, tap, capacity, or constriction or similar charges for sewer, water, electricity, natural gas or other utilities, or for garbage collection and disposal not shown by the Public Records. G. Unpatented mining claims, and all rights relating thereto; reservations and exceptions in United States Patents or in Acts authorizing the issuance thereof, Indian tribal codes or regulations, Indian treaty or aboriginal rights, including easements or equitable servitudes. H. Water rights, claims or title to water. 1. Defects, liens, encumbrances, adverse claims or other matters, if any, created, first appearing in the Public Records, or attaching subsequent to the effective date hereof but prior to the date the proposed Insured acquires of record for value the estate or interest or mortgage thereon covered by this Commitment. SPECIAL EXCEPTIONS FOLLOW WLTACOMB bk 05/17/07 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order ljo.: 001309598 Your NO.: SPECIAL EXCEPTIONS A 1. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: PURPOSE: PASS AND RE-PASS AREA AFFECTED: PORTIONS OF PARCELS A, D, E AND F RECORDED: JANUARY 14, 1914 RECORDING NUMBER: 909952 B 2. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: UNITED STATES OF AMERICA PURPOSE: TRANSMISSION LINES AREA AFFECTED: PARCEL G RECORDED: JANUARY 6, 1941 RECORDING NUMBER: 3139615 C 3. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: UNITED STATES OF AMERICA PURPOSE: TRANSMISSION LINE AREA AFFECTED: PARCELS D AND E RECORDED: JULY 25, 1941 RECORDING NUMBER: 3180314 D 4. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: UNITED STATES OF AMERICA PURPOSE: ACCESS ROAD AREA AFFECTED: PORTIONS OF PARCELS D AND E RECORDED: AUGUST 27, 1941 RECORDING NUMBER: 3186974 E 5. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: UNITED STATES OF AMERICA PURPOSE: TRANSMISSION LINES AREA AFFECTED: PARCEL G RECORDED: JULY 14, 1942 RECORDING NUMBER: 3252022 CLTACAIBI/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS F 6. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: UNITED STATES OF AMERICA PURPOSE: ELECTRIC TRANSMISSION LINES AREA AFFECTED: PARCEL G RECORDED: FEBRUARY 10, 1960 RECORDING NUMBER: 5130213 G 7. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: OLYMPIC PIPE LINE COMPANY, A DELAWARE CORPORATION PURPOSE: PIPELINE FOR THE TRANSPORTATION OF OIL AND GAS AREA AFFECTED: PARCEL G RECORDED: APRIL 14, 1964 RECORDING NUMBER: 5723006 H 8. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: OLYMPIC PIPE LINE COMPANY, A DELAWARE CORPORATION PURPOSE: PIPELINE FOR THE TRANSPORTATION OF OIL AND GAS AREA AFFECTED: PARCELS D AND E RECORDED: MAY 5, 1964 RECORDING NUMBER: 5731990 I 9. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: PUGET SOUND POWER & LIGHT COMPANY, A WASHINGTON CORPORATION PURPOSE: ELECTRIC TRANSMISSION AND/OR DISTRIBUTION LINE AREA AFFECTED: PORTIONS OF PARCELS C AND G RECORDED: MAY 6, 1969 RECORDING NUMBER: 6506180 CLTAWBURDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS J 10. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: PUGET SOUND POWER & LIGHT COMPANY, A WASHINGTON CORPORATION PURPOSE: ELECTRIC TRANSMISSION AND/OR DISTRIBUTION LINE AREA AFFECTED: PORTIONS OF PARCELS D AND E RECORDED: MAY 26, 1969 RECORDING NUMBER: 6515141 K SAID EASEMENT HAS BEEN MODIFIED BY INSTRUMENT RECORDED UNDER RECORDING NUMBER 8203180593. L 11. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: PURPOSE: INGRESS, EGRESS AND UTILITIES AREA AFFECTED: PORTIONS OF PARCELS D AND E RECORDED: AUGUST 29, 1972 AND MARCH 17, 1992 RECORDING NUMBERS: 7208290155, 7208290156 AND 9203171383 N 12. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: CITY OF TACOMA PURPOSE: WATER PIPELINE AREA AFFECTED: PARCEL G RECORDED: JANUARY 25, 1974 RECORDING NUMBERS: 7401250210 AND 7401250211 Ii 13. EASEMENT CONDEMNED IN KING COUNTY SUPERIOR COURT AND THE TERMS AND CONDITIONS THEREOF: IN FAVOR OF: CITY OF TACOMA PURPOSE: WATER PIPELINE AREA AFFECTED: PARCELS B AND G CAUSE NUMBER: 791311 CLTAChIB21RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS 0 14. WATER PIPELINE STANDARD CROSSING PERMIT, INCLUDING THE TERMS AND PROVISIONS THEREOF: PERMITTER: OLYMPIC PIPELINE COMPANY, A DELAWARE CORPORATION PERMITTEE: CITY OF TACOMA RECORDED: JANUARY 8, 1976 RECORDING NUMBER: 7601080348 p AFFECTS: PARCEL G Q 15. RIGHT OF WAY PERMIT, INCLUDING THE TERMS AND PROVISIONS THEREOF: PERMITTER: PACIFIC NORTHWEST BELL TELEPHONE COMPANY, A CORPORATION AND SUCCESSOR IN INTEREST TO PACIFIC TELPHONE AND TELEGRAPH COMPANY PERMITTEE: CITY OF TACOMA, A MUNICIPAL CORPORATION RECORDED: JUNE 15, 1976 RECORDING NUMBER: 7606150245 AFFECTS: PARCELS B AND G R 16. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: KING COUNTY WATER DISTRICT NO. 124, A MUNICIPAL CORPORATION PURPOSE: WATER MAINS AREA AFFECTED: PARCEL A RECORDED: SEPTEMBER 30, 1980 RECORDING NUMBER: 8009301002 S 17. EASEMENT CONDEMNED IN KING COUNTY SUPERIOR COURT AND THE TERMS AND CONDITIONS THEREOF: IN FAVOR OF: PUGET SOUND POWER & LIGHT COMPANY, A CLTACNIBURDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS WASHINGTON CORPORATION PURPOSE: ELECTRIC TRANSMISSION LINE FACILITIES AREA AFFECTED: PARCEL F CAUSE NUMBER: 80-2-15784-1 T 18. EASEMENT AND THE TERMS AND CONDITIONS THEREOF: GRANTEE: PUGET SOUND ENERGY, AWC PURPOSE: ACCESS ROAD AREA AFFECTED: PORTION OF LOT 1 OF PARCEL G RECORDED: SEPTEMBER 11, 2008 RECORDING NUMBER: 20080911000475 U 19. COVENANTS, CONDITIONS AND RESTRICTIONS CONTAINED IN INSTRUMENT, BUT OMITTING ANY COVENANTS OR RESTRICTIONS, IF ANY, BASED UPON RACE, COLOR, RELIGION, SEX, SEXUAL ORIENTATION, FAMILIAL STATUS, MARITAL STATUS, DISABILITY, HANDICAP, NATIONAL ORIGIN, ANCESTRY, OR SOURCE OF INCOME, AS SET FORTH IN APPLICABLE STATE OR FEDERAL LAWS, EXCEPT TO THE EXTENT THAT SAID COVENANT OR RESTRICTION IS PERMITTED BY APPLICABLE LAW: RECORDED: NOVEMBER 4, 1971 RECORDING NUMBER: 7111040759 V AFFECTS: PARCEL E W 20. COVENANTS, CONDITIONS, RESTRICTIONS, EASEMENTS, NOTES, DEDICATIONS AND SETBACKS, IF ANY, SET FORTH IN OR DELINEATED ON THE SHORT PLAT RECORDED UNDER RECORDING NUMBER 8401040734. X AFFECTS: PARCEL F Y 21. COVENANTS, CONDITIONS, RESTRICTIONS, EASEMENTS, NOTES, DEDICATIONS AND SETBACKS, IF ANY, SET FORTH IN OR DELINEATED ON THE SHORT PLAT RECORDED UNDER RECORDING NUMBER 8412100260. MACM6UR➢A/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS Z AFFECTS: PARCEL G AA 22. AGREEMENT AND THE TERMS AND CONDITIONS THEREOF: BETWEEN: LLOYD A. FOSSUM AND BARBARA J. FOSSUM, HUSBAND AND WIFE, AND JAMES L. STICE AND E. MARLENE STICE, HUSBAND AND WIFE AND: PUGET SOUND POWER & LIGHT COMPANY, A WASHINGTON CORPORATION RECORDED: JULY 3, 1972 RECORDING NUMBER: 7207030509 REGARDING: OPTION TO PURCHASE EASEMENT AB AFFECTS: PARCELS D AND E AC 23. TERMS AND CONDITIONS OF NOTICE OF CHARGES BY WATER, SEWER, AND/OR STORM AND SURFACE WATER UTILITIES, RECORDED UNDER RECORDING NUMBER 8106010916. AD 24. AGREEMENT AND THE TERMS AND CONDITIONS THEREOF: BETWEEN: LAKEHAVEN UTILITY DISTRICT AND: HARBOUR HOMES, INC. RECORDED: NOVEMBER 20, 2007 RECORDING NUMBER: 20071120000461 REGARDING: DEVELOPER EXTENSION AGREEMENT AE 25. AGREEMENT AND THE TERMS AND CONDITIONS THEREOF: BETWEEN: LAKEHAVEN UTILITY DISTRICT AND: HARBOUR HOMES, INC. RECORDED: NOVEMBER 20, 2007 RECORDING NUMBER: 20071120000462 REGARDING: DEVELOPER EXTENSION AGREEMENT CLTACMB2/RDA/M9 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS AF AFFECTS: PARCEL A AG 26. PAYMENT OF THE REAL ESTATE EXCISE TAX, IF REQUIRED. THE PROPERTY DESCRIBED HEREIN IS SITUATED WITHIN THE BOUNDARIES OF LOCAL TAXING AUTHORITY OF CITY OF AUBURN. ANY CONVEYANCE DOCUMENT MUST BE ACCOMPANIED BY THE OFFICIAL WASHINGTON STATE EXCISE TAX AFFIDAVIT. THE APPLICABLE EXCISE TAX MUST BE PAID AND THE AFFIDAVIT APPROVED AT THE TIME OF THE RECORDING OF THE CONVEYANCE DOCUMENTS. (NOTE: A DEED EXEMPT FROM EXCISE TAX IS STILL SUBJECT TO THE $5.00 TECHNOLOGY FEE AND AN ADDITIONAL $5.00 AFFIDAVIT PROCESSING FEE). AH 27. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9052-07 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 177,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 2,276.01 PAID: $ 1,138.01 UNPAID: $ 1,138.00 AFFECTS: PARCEL A AI 28. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 CLTACldB2/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS TAX ACCOUNT NUMBER: 022104-9028-08 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 180,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BAILED. $ $ 2,314.34 1,157.17 UNPAID: $ 1,157.17 AFFECTS: PARCEL C AJ 29. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST AHALF ELINQUENIT IF ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9049-03 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 163,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 2,043.63 UNPAID: $ 1,043.63 AFFECTS: PARCEL D AK 30. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST AUNPAID ON UNNTERESTPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9165-01 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 86,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,117.36 CLTACAIBURDA10999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS PAID: $ 558.68 UNPAID: $ 558.68 AFFECTS: PARCEL E AL 31. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT UNPAID ON IF FIRST AUNPAID ON DELINQUENT AND NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9214-02 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 92,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BAILED. $ $ 183.15 1 591.58 UNPAID: $ 591.57 AFFECTS: LOT 1 OF PARCEL F All 32. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9215-01 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 92,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,183.15 PAID: $ 591.58 UNPAID: $ 591.57 AFFECTS: LOT 2 OF PARCEL F CLTAUM/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS AN 33. GENERAL AND SPECIAL TAXES AND CHARGES, HALFPAYABLE DELINQUENTRIFIUNPA1DIpNUENT IF FIRST HALF UNPAID ON MA NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9216-00 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 116,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: PALLED. $ 1 744.39 UNPAID: $ 744.38 AFFECTS: LOT 3 AND AN UNDIVIDED INTEREST IN TRACT X OF PARCEL F PAYABLE FEBRUARY 15, DELINQUENT Il0 34. GENERAL AND SPECIAL TAXES AND CHARGES, IF FIRST 1AOF THEATAXOYEARY(AMOUNTSNDONiNOT UNPAID ON NOVEMBER PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9054-05 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 115,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,486.46 PAID: $ 743.23 UNPAID: $ 743.23 AFFECTS: LOT 4 AND AN UNDIVIDED INTEREST IN TRACT X OF PARCEL F ON E MAY N 1,SECOND CHARGES, HALF PAYABLE DELINQUENT FEBRUARY 15, DELINQONUENT AP 35. GENRAL F FIRST A HALF SPECIAL UNPAID TAXES IF CLTACNIN/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9108-01 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 180,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 2,314.34 PAID: $ 1,157.17 UNPAID: $ 1,157.17 AFFECTS: LOT 1 OF PARCEL G AQ 36. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9218-08 LEVY CODE: 0144 ASSESSED VALUE-LAND: $ 250,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 3,192.01 PAID: $ 1,596.01 UNPAID: $ 1,596.00 AFFECTS: LOT 2 OF PARCEL G AR 37. RIGHT OF ANY PARTY INTERESTED TO SUE OR PETITION TO HAVE SET ASIDE, MODIFIED, OR CONTEST A JUDICIAL OR NON-JUDICIAL FORECLOSURE OR FORFEITURE, OR ANY DEED PURSUANT THERETO, THROUGH WHICH TITLE TO THE LAND DESCRIBED HEREIN IS DERIVED, AND ANY LIENS, ENCUMBRANCES AND/OR OWNERSHIP INTERESTS WHICH MAY EXIST AS A RESULT OF ANY ACTS OR OMISSIONS OF THE FORECLOSING PARTIES, OR AS A RESULT OF SUCH SUIT OR CLTACIsIUMA/8999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS PETITION. AS NOTE: WE MAY BE WILLING EXCEPTION PLEASENCONTACTEYOURE TO A BONA FIDE PURCHASER TITLE OFFICER FOR FURTHER INFORMATION. A WASHINGTON CO HOMES, INC., A AT 38. MUST BE PROVIDED HOLDING HARBOUR THROUGH EHARBOUR, ANY OTHER PROOF PARTY THAT CORPORATION, OR R WASHINGTON CORPORATION, HAS SURRENDERED POSSESSION. All 39. TITLE IS VEST IN L.IPARAGRAPH(S).C., AND SUBJECT TO O THE AV 40. TERMS AND CONDITIONS OFT HE LIMITED LIABILITY COMPANY AGREEMENT FOR SCHNEIDER HOM Aw NOTE. COPY OF AGREEMENT, AND AMENDMENTS AX 41. ANY CONVEYANCE OR AMORTGAGE LOIABILITYLCOMPANYMAGREEMENT EXECUTED UTED IN N AND BY ALL MUST BE DESIGNATED LIMITED LIABILITY COMPANY. ON IN AY 42. THE LEGAL HCTHETAPPLICATION COMMITMENT IS ASFDEFINEDNIN THE PROVIDED WITT CTION POLICY TO (TLE ITHE DESCRIPTION NOTIFY THE TI DOES NOT CONFORM TO THEIR EXPECTATIONS. URANCE AZ 43. IMPORTANT!! THIS TRANSACTION AND BEEN NORRFORSMATTERS THAT AGAINST UNRECORDED COULD BE D SBYOUNHAVEURECEIVED COMPLETE MAY NOT CLOSE E UNTIL UNIT ADDRESSING THIS PARAGRAPHI ENERAL EXCEPT TO PROVIDE AN LENDER'S POLICY OR REVIEWIOFS A THROUGH D WILL SURVEY, IF REQUIRED, 1S COMPLETED. A SUPPLEMENTAL COMMITMENT WILL FOLLOW. CLTACAIBURDA10999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No:: 1309598 Your No.: r SPECIAL EXCEPTIONS BA NOTE 1: EFFECTIVE JANUARY 1, 1997, DOCUMENT FORMAT AND CONTENT REQUIREMENTS HAVE BEEN IMPOSED BY WASHINGTON LAW. FAILURE TO COMPLY WITH THE FOLLOWING REQUIREMENTS MAY RESULT IN REJECTION OF THE DOCUMENT BY THE COUNTY RECORDER OR IMPOSITION OF A $50.00 SURCHARGE. FOR DETAILS OF THESE STATEWIDE REQUIREMENTS PLEASE VISIT THE KING COUNTY RECORDER'S OFFICE WEBSITE AT WWW.KINGCOUNTY.GOV/BUSINESS/RECORDERS.ASPX AND SELECT ONLINE FORMS AND DOCUMENT STANDARDS. THE FOLLOWING MAY BE USED AS AN ABBREVIATED LEGAL DESCRIPTION ON THE DOCUMENTS TO BE RECORDED TO COMPLY WITH THE REQUIREMENTS OF RCW 65.04. SAID ABBREVIATED LEGAL DESCRIPTION IS NOT A SUBSTITUTE FOR A COMPLETE LEGAL DESCRIPTION WHICH MUST ALSO APPEAR IN THE BODY OF THE DOCUMENT: PORTIONS OF THE SOUTHEAST QUARTER OF SECTION 2-21-4. END OF SCHEDULE B CLTAChl8l/RDA/0999 CHICAGO TITLE INSURANCE COMPANY A.L.T.A. COMMITMENT SCHEDULE B (Continued) Order No.: 1309598 Your No.: SPECIAL EXCEPTIONS BC THE FOLLOWING PARTIES HAVE BEEN SENT A COPY OF THIS COMMITMENT: CHICAGO TITLE (BELLEVUE) 10500 NE 8TH ST., SUITE 600 BELLEVUE, WASHINGTON 98004 PAULA ADAMS (425)455-4995 WINDERMERE REAL ESTATE (YARROW BAY) 3933 LAKE WASHINGTON BLVD NE, SUITE 100 KIRKLAND, WASHINGTON 98033 RON BRANCH (425)822-5100 SCHNEIDER HOMES 6510 SOUTHCENTER BLVD TUKWILA, WASHINGTON 98188 GERALD SCHNEIDER (206)248-2471 SCHNEIDER HOMES 6510 SOUTHCENTER BLVD TUKWILA, WASHINGTON 98188 HARRY SCHNEIDER (206)248-2471 BANK OF AMERICA, N.A. 600 ANTON, SUITE 100 COSTA MESA, CALIFORNIA 92626 CHRIS WILLIS (714)327-4557 CLTAWBLRDA/0999 CHICAGO TITLE INSURANCE COMPANY 701 FIFTH AVENUE, #2300, SEATTLE, WA 98104 PHONE: (206)628-5610 FAX: (206)628-9717 ORDER NO: 001309598 YOUR NO: UNIT NO: 06 LOAN NO: SUPPLEMENTAL COMMITMENT BD O R D E R R E F E R E N C E I N F 0 R M A T 1 0 N SUPPLEMENTAL NUMBER: 1 OF THE SECOND COMMITMENT SELLER: BANK OF AMERICA, N.A. PURCHASER/BORROWER: WYNCREST, LLC PROPERTY ADDRESS: Our T I t I e Commitment dated 10/11/10 at 8:00 A. M. is supplemented as follows: BE PARAGRAPH NUMBER(S) 38 OF OUR COMMITMENT IS (ARE) ELIMINATED. BF PARAGRAPH NUMBER(S) 13 HAS (HAVE) BEEN AMENDED AS FOLLOWS: BG 1. EASEMENT CONDEMNED IN KING COUNTY SUPERIOR COURT AND THE TERMS AND CONDITIONS THEREOF: IN FAVOR OF: CITY OF TACOMA PURPOSE: WATER PIPELINE AREA AFFECTED: PARCEL G AND OTHER PROPERTY CAUSE NUMBER: 791311 BI SEE NEXT PAGE SUPPLCONURDAf09" CHICAGO TITLE INSURANCE COMPANY Order No.: 1309598 Your No.: SERRANO 10 PARCELS TO BE 202 LOTS Unit No.: 06 SUPPLEMENTAL COMMITMENT (Continued) BJ PARAGRAPH NUMBER(S) 15 HAS (HAVE) BEEN AMENDED AS FOLLOWS: BK 2. RIGHT OF WAY PERMIT, INCLUDING THE TERMS AND PROVISIONS THEREOF: PERMITTER: PACIFIC NORTHWEST BELL TELEPHONE COMPANY, A CORPORATION AND SUCCESSOR IN INTEREST TO PACIFIC TELPHONE AND TELEGRAPH COMPANY PERMITTEE: CITY OF TACOMA, A MUNICIPAL CORPORATION RECORDED: JUNE 15, 1976 RECORDING NUMBER: 7606150245 AFFECTS: PARCEL G AND OTHER PROPERTY BU PARAGRAPH NUMBER(S) 27 HAS (HAVE) BEEN AMENDED AS FOLLOWS: BN 3. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9052-07 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 177,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 2,276.01 PAID: $ 2,276.01 UNPAID: $ 0.00 AFFECTS: PARCEL A BO SUPLCO W /RDA/6999 CHICAGO TITLE INSURANCE COMPANY Order No.: 1309598 Your No.: SERRANO 10 PARCELS TO BE 202 LOTS Unit No.: 06 SUPPLEMENTAL COMMITMENT (Continued) BP PARAGRAPH NUMBER(S) 28 HAS (HAVE) BEEN AMENDED AS FOLLOWS: B4 4. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9028-08 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 180,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 2,314.34 PAID: $ 2,314.34 UNPAID: $ 0.00 AFFECTS: PARCEL C BR PARAGRAPH NUMBER(S) 29 HAS (HAVE) BEEN AMENDED AS FOLLOWS: BS 5. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE: INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9049-03 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 163,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 2,087.26 PAID: $ 2,087.26 UNPAID: $ 0.00 AFFECTS: PARCEL D BT SUPLCOM21REWOM CHICAGO TITLE INSURANCE COMPANY Order No.: 1309598 Your No.: SERRANO 10 PARCELS TO BE 202 LOTS Unit No.: 06 SUPPLEMENTAL COMMITMENT (Continued) BU PARAGRAPH NUMBER(S) 30 HAS (HAVE) BEEN AMENDED AS FOLLOWS: BV 6. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9165-01 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 86,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,117.36 PAID: $ 1,117.36 UNPAID: $ 0.00 AFFECTS: PARCEL E BW PARAGRAPH NUMBER(S) 31 HAS (HAVE) BEEN AMENDED AS FOLLOWS: BK 7. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9214-02 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 92,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,183.15 PAID: $ 1,183.15 UNPAID: $ 0.00 AFFECTS: LOT 1 OF PARCEL F BY SUPLCOMURDA/0999 CHICAGO TITLE INSURANCE COMPANY Order No.: 1309598 Your No.: SERRANO 10 PARCELS TO BE 202 LOTS Unit No.: 06 SUPPLEMENTAL COMMITMENT (Continued) BZ PARAGRAPH NUMBER(S) 32 HAS (HAVE) BEEN AMENDED AS FOLLOWS: CA 8. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9215-01 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 92,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,183.15 PAID: $ 1,183.15 UNPAID: $ 0.00 AFFECTS: LOT 2 OF PARCEL F CB PARAGRAPH NUMBER(S) 33 HAS (HAVE) BEEN AMENDED AS FOLLOWS: CC 9. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9216-00 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 116,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 1,488.77 PAID: $ 1,488.77 UNPAID: $ 0.00 AFFECTS: LOT 3 AND AN UNDIVIDED INTEREST IN TRACT X OF PARCEL F co SUPLCOW/RDA/0999 CHICAGO TITLE INSURANCE COMPANY Order No.: 1309598 Your No.: SERRANO 10 PARCELS TO BE 202 LOTS Unit No.: 06 SUPPLEMENTAL COMMITMENT (Continued) CE PARAGRAPH NUMBER(S) 34 HAS (HAVE) BEEN AMENDED AS FOLLOWS: CF 10. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9054-05 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 115,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 PAID: I LED: $ 11,486.46 GENERAL & SPECIAL TAXES: B ,486.46 UNPAID: $ 0.00 AFFECTS: LOT 4 AND AN UNDIVIDED INTEREST IN TRACT X OF PARCEL F CG PARAGRAPH NUMBER(S) 35 HAS (HAVE) BEEN AMENDED AS FOLLOWS: DELINQUENT IF CH 11. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, NOVEMBER 1 FIRST HI SECOND INTEREST DELINQUENT AND F PEUNPAID ON NALTIES): OF THE TAX YEAR (AMOUNTS DO NOT YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9108-01 LEVY CODE: 0117 ASSESSED VALUE-LAND: $ 180,000.00 ASSESSED VALUE-IMPROVEMENTS: $ GENERAL & SPECIAL TAXES: PALLED: $ 2,314.34 UNPAID: $ 0.00 AFFECTS: LOT 1 OF PARCEL G CI SUPLCOW/RDA/0599 CHICAGO TITLE INSURANCE COMPANY Order No.: 1309598 Your No.: SERRANO 10 PARCELS TO BE 202 LOTS Unit No.: 06 SUPPLEMENTAL COMMITMENT (Continued) CJ PARAGRAPH NUMBER(S) 36 HAS (HAVE) BEEN AMENDED AS FOLLOWS: CK 12. GENERAL AND SPECIAL TAXES AND CHARGES, PAYABLE FEBRUARY 15, DELINQUENT IF FIRST HALF UNPAID ON MAY 1, SECOND HALF DELINQUENT IF UNPAID ON NOVEMBER 1 OF THE TAX YEAR (AMOUNTS DO NOT INCLUDE INTEREST AND PENALTIES): YEAR: 2010 TAX ACCOUNT NUMBER: 022104-9218-08 LEVY CODE: 0144 ASSESSED VALUE-LAND: $ 250,000.00 ASSESSED VALUE-IMPROVEMENTS: $ 0.00 GENERAL & SPECIAL TAXES: BILLED: $ 3,192.01 PAID: $ 3,192.01 UNPAID: $ 0.00 AFFECTS: LOT 2 OF PARCEL G CL THERE HAS BEEN NO CHANGE IN THIS COMMITMENT SINCE OCTOBER 11, 2010, EXCEPT AS SHOWN ON SUPPLEMENTAL(S) 1 HEREIN. Cm NOVEMBER 18, 2010 AUTHORIZED BY: DAVID P. CAMPBELL SUPLCOINIVRDA/0999 +� . . ' Exhibit 4, Number of Pages 13 A PORTION OF THE SE 1/4 OF SECTION 02, TOWNSHIP 21 N, RANGE 4 E, W.M. ,„ / WYNCREST PRE/ LIMINARY PLAT - �� ,a �� i�`��-� a__� � ,c� ��•xv � i� :�� � / /11 � 1 1�1 � I `' ~ yQ •- ..` )'I W •��� � M OlY i 6�Y tl .. ; t -GjlYQITyC���� N /I � �1 j'11F1M M1X � ' � `� 1�� _ _� \•� T \� ' • !'• `��1� ,/J� ,/Uy. I/! 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"-' � I - � �cONS11lSG7dW0IXCr°° ' ' ��. •� � .• �y'.'.'.' � CC-�' wu�w nwam wemau • � � . . . . . ...:. \ j, van�wwizunw1 � �'. . . . . . ..•.•.'. . . .•.•.•. �� ;OH�AAI e.a.�nw�ma '; N _ . .�'�y.:..� .•i,: �'.(;. •.:.:.;.:.:. :�;.•.•.•. , ; oriv,�ric- .�„�� f' _ . . ....... : .d.n�a,�.� ,. ; ' \ (�� �: I ��� �� E�f�t.:�. :�s• .•�.• � - i�c:a � " ` -- • :, f� y� - - _— * k CITY OF Exhibit 5, Number of Pages -DURN Peter B. Lewis, Mayor #Alj]D WASHINGTON 25 West Main Street * Auburn WA 98001-4998 * www.auburnwa.gov * 253-931-3000 NOTICE OF APPLICATION (NOA) PRELIMINARY SUBDIVISION PLT10-0070 - Wyncresf Date of Notice of Application: March 18, 2011 Project Permit Applications were filed with the City of Auburn Planning and Development Department on December 22, 2010. The application for a preliminary subdivision was determined complete on January 19, 2011. Following is a description of the application and the process for review. The permit applications and listed studies may be reviewed at the offices of the Auburn Planning and Development Department at One East Main Street, Auburn WA 98001. Description of Proposal: Subdivide approximately 8.6 acres into 24 single-family residential lots with new public right-of-way, storm drainage facilities, and sensitive area tract. Project Proponent: Harry Schneider, Scheider Homes Inc. Project Location: The site can be accessed at the intersection of 64th Avenue and 299`h St. The site is within the Northwest Section 2, Township 21, Rarige 04 (NW 2-21-04) in Auburn, King County, Washington. Parcel Numbers: 0221049052, 022104TRCT, 0221049214, 02210492161 0221049054. Studies/Plans Submitted with Application: School Walkway Analysis, Geotechnical Engineering Study for the Wyncrest Residential Development, Critical Areas Report, and a Preliminary Storm Report Other Permits, Plans, and Approvals which may be required: Subsequent development will be required to obtain all necessary permits or approvals that may include: city preliminary and final plat approvals, facility extensions and building permits. 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, Design and Construction Standards, Building Code and Fire Code. Public Hearings: A public hearing is required for this proposal. A separate notice will be issued when the date has been scheduled. Public Comment Period: You are invited to comment, request a copy of the decision, when available, and be made aware of any appeal rights. Comments must be received in writing by the Auburn Department of Planning and Development at the mailing address: 25 West Main, Auburn, WA 98001-4998 and Located at: 1 East Main Street, Auburn WA 98001. You are invited to express comments up until April 5, 2011 and at the public hearing. If you have further comments or questions related to this application, you may contact Hillary Taylor, Senior Planner at (253) 288-7412. If you call or write, please reference File No. PLT10-0010. CORR11-176 AUBURN *MORE THAN YOU IMAGINED ~~l a Sea~tte ~it~es - A _ a seattletimes.com PO Box 70, Seattle, WA 98111 AUBURN CITY OF-FINANCE DEPT ATTN CITY CLERK 25 WEST MAIN AUBURN, WA 98001 Re: Advertiser Account #30785204 Ad 796030600 Affidavit of Publication 41 1 9880 / 3 STATE OF WASHINGTON Counties of King and Snohomish The undersigned, on oath states that he/she 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 Washington. 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. I ~Y ~ NewspapeC ~ ~ ~ - Pubhcat~on Date ti, The Seattle Times 03/18/11 ,~~~~AaLl~f VOLA 1Z_ 9AJ 9: ')u 66 fW Signature 01CCW-Ui.%_ ' /y +++4+ SPGI.+h+7+~4'~i, 6ub!2'Vbeeq and sworn,to before me on DATE) in a or t tate of Washington, residing at Seattle TUBE) Notary Pub' f ~ e Seattle ~i~.es ~l seattletimes.com Re Advertiser Account #30785204 Ad # 796030600 Ad TEXT:NOTICE OF APPLICATION: LIST OF APPLI March 18, 2011 CABLE DEVELOPMENT APPLICATION REQUESTED: REGULATIONS: This propo Preliminary Subdivision sal Is subject to and shall be APPLICATION NUMBER AND consistent with the Auburn City NAME: PLT10-0010 - Code, Auburn Comprehensive Wyncrest Plan, Design and Construction PROJECT PROPONENT: Standards, Building Code and Harry Schneider - Schneider Fire Code. Homes Inc. PUBLIC HEARING: A public PROJECT LOCATION: The site hearing is required for can be accessed at this proposal. A separate notice the Intersection of 64th Avenue will be issued and 299th St. when the date has been The site is within the Northwest scheduled. Section 2, PUBLIC COMMENT PERIOD: Township 21, Range 04 (NW 2- You are Invited to 21-04) in Auburn, express comments up until King County, Washington. April 5, 2011 and at Parcel Number the public hearing once a date 0221049052, 022104TRCT, has bean 0221049214, 0221049216, determined. Written comments 0221049054 may be submitted to DESCRIPTION OF PROPOSAL: Hillary Taylor, Senior Planner, Subdivide approximately Department of 8.6 acres into 24 single-family Planning and Development at residential lots the mailing address with new public right-of-way, 25 West Main, Auburn, WA storm drainage 98001-4998 and located facilities, and sensitive area at:1 East Mein Street, Auburn tract. The permit WA 98001 or via application may be reviewed at email at htaylor@auburnwa.gov. the off lees of If you have the Auburn Planning and further comments or questions Development Department related to this at One East Main Street, Auburn application, you may call Hillary WA 98001 Taylor, Senior APPLICATION FILED: December Planner, at 253-288.7412. If you 22, 2010: COMPLETE call or write, APPLICATION: January 19, please reference the application 2011, number noted STUDIES SUBMITTED WITH above. City of Auburn Planning APPLICATON: School and Development Walkway Analysis, Department 25 West Main Geotechnlcat Engineering Study Street, Auburn, WA 98001- 4998 253-931-3090 for the Wyncrest Residential Development, Critical Areas Report, and a Preliminary Storm Report OTHER PERMITS AND PLANS WHICH MAY BE REQUIRED: Subsequent development will be required to obtain all necessary permits or approvals that may include: city preliminary and final plat approvals, facility extensions and building permits. STATEMENT OF CONSIS TENCY AND * Exhibit 6, Number of Pages 4 - CI Peter B. Lewis, Mayor laiURN n WA 98001-4998 * www.auburnwa.gov * 253-931-3000 Aubur WASHINGTON 25 West Main Street Notice of Public Hearing And Determination of Non-Significance City of Auburn File No: SEP11-0011 Public Hearing: July 20, 2011 at 5:30 PM COUNCIL CHAMBERS, AUBURN CITY HALL 25 West Main Street, Auburn, WA 98001 Application Requested: PRELIMINARY PLAT Application Number and Name: PLT10-0010 / Wyncrest Preliminary Plat Applicant: Harry Schneider, Schneider Homes, Inc. 6510 Southcenter Boulevard, Suite 1, Tukwila, WA 98188 Proponent: Harry Schneider, Schneider Homes, Inc. 6510 Southcenter Boulevard, Suite 1, Tukwila, WA 98188 Property Location: The subject property is located at the intersection of 64`h Avenue South and South 299 h Street (S2,T21 N, R4E) Parcel Numbers: 0221049052, 0221049214, 0221049216, and 0221049054 Description Of Proposal: Application for a Preliminary plat to create a 24 lot residential subdivision Lead Agency: City of Auburn Auburn Contact: Application Filed: December 22, 2010 Hillary Taylor, Senior Planner Complete Application: January 19, 2011 htaylor@auburnwa.gov Notice Of Application: March 18, 2011 253-288-7412 Studies Submitted With Application: Geotechnical Engineering Study Preliminary and Revised Storm Report Critical Areas Report on Wetlands, Streams, and Wildlife habitats Other Permits and Plans Which May Be Required: None Statement of Consistency and List of Applicable Development Regulations: This project is subject to and shall be consistent and Stomwater 1t Management Ordinance, Street Standards, International Building Code Program, Surface a and International Fire Code. The lead agency for this proposal has determined that it does not have probable significant adverse impact on the environment. An environmental impact statement (EIS) is not required under RCW AUBURN MORE THAN YOU iMAGINEI Notice of Public Hearing and Determination of Non-Significance SEP11-0011 Page 2 This DNS is issued under 197-11-340(2); the lead agency will not act on this proposal for 14 days from the date issued below. Comments must be submitted by 5:00 p.m. on July 5, 2011. Any person aggrieved of the City's determination may file an appeal with the Auburn City Clerk within 14 days of the close of the comment period, or by 5:00 p.m. on July 19, 2011. Responsible Official: Kevin H. Snyder, AICP Position/Title: Director, Planning and Development Department Mailing Address: 25 West Main Street Auburn, Washington 98001 Telephone Number: (253) 931-3090 Date Issued: June 21. 2011 Signature: Utr Kevin H. 'Snyder, AMP Director, Planning and Development Department Note: This determination 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. The proposal will be required to meet all applicable regulations. Citizens with speech, sight or hearing disabilities wishing to review documents pertaining to this hearing should contact the City of Auburn within 10 calendar days prior to the meeting as to the type of service or equipment needed. Each request will be considered individually according to the type of request, the availability of resources, and the financial ability of the City to provide the requested services or equipment. 0 seattletimes.com PO Box 70, Seattle, WA 98111 AUBURN CITY OF-FINANCE DEPT ATTN CITY CLERK 25 WEST MAIN AUBURN, WA 98001 Re: Advertiser Account #30785204 Ad 798007600 Affidavit of Publication 4131496 / 3 STATE OF WASHINGTON Counties of King and Snohomish The undersigned, on oath states that he/she 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 Washington. 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 06/22/11 1 111 ' l e'er o Signature ant ~ "OIL APA'j S scribed and sworn to before me on I (DATE) Y SIGNATURE) Nota Public in and for the State of Washington, residing at Seattle N OF W ~t~ e Sea~te C~itnes , seattletimes.com Re Advertiser Account #30785204 Ad # 798007600 i Ad TEXT'•NOTICE OF under 197-11-340(2); Taylor, Senior i DETERMINATION OF the lead agency will not act on Planner, at 253-288.7412. If you NON-SIGNIFICANCE AND this proposal for call or write, NOTICE OF PUBLIC HEARING: 14 days from June 21, 2011. please reference the application June 21, 2011 Comments must be in number noted writing and submitted by 5:00 above. APPLICATION REQUESTED: P.M. on July 5, SEPA associated with a 2011. Questions and comments Preliminary Subdivision may be submitted to APPLICATION NUMBER AND Hillary Taylor, Senior Planner, NAME: SEP11-0011 Planning and associated with PLT10-0010 Development Department, 25 Wyncrest Preliminary West Main Street, Plat Auburn, WA 98001-4998 or via PROJECT PROPONENT: email at Harry Schneider - Schneider htaylor@auburnwa.gov.Any Homes Inc. person wishing to PROJECT LOCATION: The site become a party of record, shall can be accessed at the Include in their Intersection of 64th Avenue and comments that they wish to 299th St. The receive notice of and site is within the Northwest participate In any hearings, if Section 2, Township relevant and 21, Range 04 (NW 2-21.04) in request a copy of decisions Auburn, King County, once made. A party of Washington. record may appeal the City's Parcel Number 0221049052, determination by 022104TRCT, 0221049214, filing an appeal application with 0221049216, 0221049054 the Auburn City DESCRIPTION OF PROPOSAL: Clerk within 14 days of the Subdivide approximately close of the comment 8.6 acres Into 24 single-family period, or by 5:00 p.m. on July residential lots 19, 2011. with new public right-of-way, PUBLIC HEARING: A public storm drainage hearing Is scheduled for facilities, and sensitive area Wednesday, July 20, 2011. tract. The permit PUBLIC COMMENT PERIOD: application may be reviewed at You are Invited to express the offices of the comments on the DNS up until Auburn Planning and July 5, 2011 and Development Department at generally on the project up to One and at the public East Main Street, Auburn WA hearing. Written comments may 98001.The lead agency be submitted to for this proposal has Hillary Taylor, Senior Planner, determined that it does not Department of have probable significant Planning and Development at adverse Impact on the the mailing address environment. An environmental 25 West Mein, Auburn, WA Impact statement 98001-4998 and located (EIS) Is not required under RCW at: 1 East Main Street, Auburn 43.21C.030(2)(c). WA 98001 or via This decision was made after email at htaylor®auburnwa.gov. review of a if you have completed environmental further comments or questions checklist and other related to this Information on file with the lead application, you may call Hillary agency. This information Is available to the public on request.This DNS Is issued 4 Exhibit 7, Number of Pages 25 Project No. 10067 CITY OF AUBURN ENVIRONMENTAL CHECKLIST PRELIMINARY PLAT OF WYNCREST PURPOSE OF CHECKLIST: The State Environmental Policy Act (SEPA) requires all agencies to consider the environmental impacts of a development before making decisions (RCW 43.21C). The purpose of environmental review is to identify a proposal's significant adverse impacts, measures to minimize or avoid such impacts, and allows wide public review for a range of projects. Rip IV DEC 22 2010 C17 Y 01Z AU13UM © 2010 D. R. STRONG Consulting Engineers Inc. Page 1 of 13 Preliminary Plat of Wyncrest Auburn, Washington SEPA Checklist A. BACKGROUND 1. Name of proposed project, if applicable: Preliminary Plat of Wyncrest 2. Name of applicant: Schneider Homes, Inc. 3. Address and phone number of applicant and contact person: Harry Schneider 6510 Southcenter Boulevard, Suite #1 Tukwila, Washington 98188 4. Date checklist prepared: November 22, 2010 5. Agency requesting checklist: City of Auburn 6. Proposed timing or schedule (including phasing, if applicable): After City of Auburn preliminary and engineering approval, the construction is proposed to occur by Summer of 2011. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this Proposal? If yes, explain. Construct 24 single-family residences. 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this Proposal. Preliminary Storm Report - DR STRONG Critical Areas Report - Habitat Technologies Soils Analysis - Earth Consultants Traffic Impact Analysis - Jake Traffic 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your Proposal? If yes, explain. None to my knowledge. 10. List any government approvals or permits that will be needed for your Proposal, if known. SEPA Determination (Auburn) Preliminary Subdivision Approval (Auburn) Engineering Plan Approval (Auburn) © 2010 D. R. STRONG Consulting Engineers Inc. Page 2 of 13 Preliminary Plat of Wyncrest SEPA Checklist Auburn, Washington 11, Give brief, complete description of your Proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your Proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.). The project is a proposed single family subdivision of 8.60 acres in the City of Auburn (Tax Parcels 022104-9052, 9214, 9216 and 9054) into 24 single family residential lots. 12. Location of the Proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township, and range, if known. If a Proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map, and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. The proposed project is located in Section 2, Township 21 North, Range 4 East. The project is located at approximately the intersection of 64th Avenue South and South 298th Place. B. ENVIRONMENTAL ELEMENTS 1. EARTH A. General description of the site (circle one). Flat, rolling, hilly, steep slopes, mountainous other. B. What is the steepest slope on the site (approximate percent slope)? 75% in the steep slope areas. C. What general types of soils are found on the site (for example, clay, sand, gravel, peat, and muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. According to the King County SCS maps this site is mapped as having Alderwood gravelly sandy loam 0 to 6 percent and 6 to 15 percent. D. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. No. See attached geotechnical report. E. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. The purpose of any grading required at the Site would be for the subdivision road, residences, and the associated utilities. Prelimina Plat of Wyncrest fl 2010 D. R. STRONG Consulting Engineers Inc. Page 3 of 13 Auburn, Washington SEPA Checklist F. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. Some soil erosion could occur as a result of clearing and grading. An erosion and sedimentation control plan will be submitted as part of the Engineering Plans. G. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Approximately 50% of the Site will be covered with impervious surfaces. This includes the subdivision roads and 4,000 s.f. of impervious surface per residential lot. H. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. Temporary erosion and sedimentation control measures such as hydroseeding and silt fencing will be used. Sedimentation traps or ponds will be required and implemented as part of the TESC plan. 2. AIR A. What types of emissions to the air would result from the Proposal (i.e., dust, automobile odors, and industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known. During construction, exhaust fumes from construction machinery such as backhoes and bulldozers, sawdust from chainsaws and circular saws, smoke from burn piles (if permitted) will be emitted to the atmosphere. Once the project is complete, normal household emissions will be present, such as lawnmower exhaust, automobile exhaust, oil/gas furnace and/or woodburning fireplace/stove smoke (if permitted), and cooking odors. B. Are there any off-site sources of emissions or odor that may affect your Proposal? If so, generally describe. There are no known outside sources of emissions. C. Proposed measures to reduce or control emissions or other impacts to air, if any. Equipment in good working order will be utilized during construction. After houses are occupied, the emissions from each residence will be controlled by local regulations. © 2010 D. R. STRONG Consulting Engineers Inc. Page 4 of 13 Preliminary Plat of Wyncrest SEPA Checklist Auburn, Washington 3. WATER A. Surface. 1) is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, and wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. There are two Category 3 wetlands on site. 2) Will the project require any work over, in, or adjabent to (within and attach 200 feet) the described waters? If yes, please available plans. Yes. Stream and wetlands will be shown on Preliminary Plat drawings. 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. Minimal impact to wetland buffers will occur, due to 6e Ave frontage improvements. No wetland fill is anticipated. 4) Will the Proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. None to my knowledge. 5) Does the Proposal lie within a 100-year floodplain? If so, note location on the site plan. Yes, the ordinary high water mark of the onsite wetlands. 6) Does the Proposal involve any discharges of waste materials to surface waters? if so, describe the type of waste and anticipated volume of discharge. No. B. Ground. 1) Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities if known. Water will be provided by an existing public water system. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, containing the following chemicals; agricultural; etc.). Describe the general size of the system, the number of such systems, the number Page 5 of 13 Preliminary Plat of Wyncrest © 2010 D. R. STRONG Consulting Engineers Inc. Auburn, Washington SEPA Checklist of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. None, residential sewage will be discharged into an existing public sewer system. C. Water Runoff (including storm water). 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. The project will generate stormwater runoff from impervious and pervious surfaces. The runoff will be collected and conveyed to a water quality and detention facility. The runoff will be discharged to the on site wetland. The wetland discharges to a culvert in 65`" Avenue South and ultimately discharges to the adjacent ravine, which eventually discharges to the Green River. 2) Could waste materials enter ground or surface waters? If so, generally describe. Debris and trash may enter the storm system via catch basins or the open detention pond. Since the storm system will be maintained by the City of Auburn, the waste should be removed at least once a year. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any. A combined detention/water quality pond is proposed on site which will detain and treat storm water prior to being discharged into the existing downstream system. The pond outfall will be equipped with a flow restrictor orifice plate tee that will help prevent debris, as well as oils and other floatables, from entering the downstream water bodies. 4. PLANTS A. Check or circle types of vegetation found on the site: _X_ deciduous tree: alder, maple, aspen, other: (birch, vine maple, black cottonwood, dogwood, apple) X_ evergreen tree: fir, cedar, pine, other: (hemlock) X shrubs _ grass (orchard grass) _X_ pasture crop or grain © 2010 D. R. STRONG Consulting Engineers Inc. Page 6 of 13 Preliminary Plat of Wyncrest SEPA Checklist Auburn, Washington wet soil plants: cattail, buttercup, bulrush, other: _ water plants: water lily, eelgrass, milfoil, other: X_ other types of vegetation (Deer fern, blac, holly, scotch broom) B. What kind and amount of vegetation will be removed or altered? Approximately 79% of Site will be cleared. C. List threatened or endangered species known to be on or near the site. None known. D. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any. Sensitive Areas are to be preserved in tracts as shown on the plans. 5. ANIMALS A. Circle any birds and animals which have been observed on or near the site or are known to be on or near the site. birds: hawk, heron, eagle, songbirds, other: mammals: deer, bear, elk, beaver, other: small _rodents, racoons fish: bass, salmon, trout, herring, shellfish other: B. List any threatened or endangered species known to be on or near the site. Unknown. C. Is the site part of a migration route? If so, explain. Western King County as well as the rest of Western Washington, is in the migration path of a wide variety of non-tropical songbirds, and waterfowl, including many species of geese. D. Proposed measures to preserve or enhance wildlife, if any. Sensitive Areas are to be preserved in tracts as shown on the plans. 6. ENERGY AND NATURAL RESOURCES A. What kinds the completed project's energy needs? Describe lwhetheb used t it will be used for heating, manufacturing, etc. Electric andlor natural gas will be used for heating. Page 7 of 13 Preliminary Plat of Wyncrest © 2010 D. STRONG Consulting Engineers Inc. Auburn, Washington SEPA Checklist B. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. Lot 19 may block sunlight on adjacent property to the north due to 6' wall. C. What kinds of energy conservation features are included in the plans of this Proposal? List other proposed measures to reduce or control energy impacts, if any. Thermal windows and other construction insulation measures that would reduce heat transfer, as required by applicable building codes. 7. ENVIRONMENTAL HEALTH A. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this Proposal? If so, describe. No. 1) Describe special emergency services that might be required. None. 2) Proposed measures to reduce or control environmental health hazards, if any. None. 8. NOISE A. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Normal traffic noise from nearby streets (South 300'' Street & 6e Avenue South) B. What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Noise associated with construction machinery and equipment typical for building a single-family residence will be present during construction within the limitations of the City of Auburn Noise Control Ordinance. Noise typical for a single-family residence, such as automobiles, yard equipment, pets, and residents will be present once the residences are occupied. C. Proposed measures to reduce or control noise impacts, if any. Construction activities will comply with all applicable noise ordinances. © 2010 D. R. STRONG Consulting Engineers Inc. Page 8 of 13 Preliminary Plat of Wyncrest SEPA Checklist Auburn, Washington g. LAND AND SHORELINE USE A. What is the current use of the site and adjacent properties? The Sites was used for single-family residences and farm land in the past, however all the residences have been demolished within the last 5 years and it does not appear to have been used for agriculture in the recent past. Adjacent properties are a mixture of undeveloped land and single-family residences. B. Has the site been used for agriculture? If so, describe. Based on historic aerial photography and the size of the property, it appears that the site has been used for agriculture in the past. C. Describe any structures on the site. There are no existing structures. D. Will any structures be demolished? If so, what? Not applicable E. What is the current zoning classification of the site? R-5. F. What is the current comprehensive plan designation of the site? Single Family Residential G. If applicable, what is the current shoreline master program designation of the site? Not Applicable. H. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. Yes, steep slope and wetland areas have been designated as environmentally sensitive and are shown on the plans. 1. Approximately how many people would reside or work in the completed project? Approximately 56 individuals will reside in the completed residential development (24 units x 2.3 persons per household = 55.2 individuals). J. Approximately how many people would the completed project displace? Not applicable. K. Proposed measures to avoid or reduce displacement impacts, if any. None. Page 9 of 13 Preliminary Plat of Wyncrest O 2010 D. R. STRONG Consulting Engineers Inc. Auburn, Washington SEPA Checklist L. Proposed measures to ensure the Proposal is compatible with existing and projected land uses and plans, if any. The proposed development is compatible with the prescribed land use codes and designations for this site. Per the Auburn Zoning Code, the development is consistent with the density requirements and land use of this property. HOUSING A. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. Twenty four single-family middle-income housing units. B. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. None. C. Proposed measures to reduce or control housing impacts, if any. Unknown. AESTHETICS A. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? Thirty-five feet is the maximum building height per City of Auburn Zoning Code. B. What view in the immediate vicinity would be altered or obstructed? Views in the vicinity are not'-likely to be enhanced, extended or obstructed by development of this project. C. Proposed measures to reduce or control aesthetic impacts, if any? The location of the buildings adheres to or exceeds the minimum setback requirements of the zoning district. Residential landscaping will be installed at the completion of building and paving construction. LIGHT AND GLARE 1. What type of light or glare will the Proposal produce? What time of day would it mainly occur? Light and glare will be produced from building lighting. Light will also be produced from vehicles using the site. The light and glare will occur primarily in the evening and before dawn. © 2010 D. R. STRONG Consulting Engineers Inc. Page 10 of 13 Preliminary Plat of Wyncrest SEPA Checklist Auburn, Washington 2. Could light or glare from the finished project be a safety hazard or interfere with views? Light and glare from the project will not cause hazards or interfere with views. 3. What existing off-site sources of light or glare may will be from vehicles traveling The primary off-site source of light and g along the area roadways. 4. Proposed measures to reduce or control light and glare impacts, if any. None. RECREATION 1. What designated and informal recreational opportunities are in the immediate vicinity? None. 2. Would the proposed project displace any existing recreational uses? If so, describe. No. 3. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any. No recreational facilities are required or proposed. HISTORIC AND CULTURAL PRESERVATION 1. Are there any places or objects listed on or proposed for, national, state, or local preservation registers known to be on or next to the site? If so, generally describe. No. 2. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. None. 3. Proposed measures to reduce or control impacts, if any. There are no known impacts. If an archeological site is found during the course of construction, the State Historic Preservation Officer will be notified. TRANSPORTATION 1. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. Access to the proposed project will be from 6e Avenue South. Page 11 of 13 Preliminary Plat of Wyncrest 0 R. S2010 D. STRONG Consulting Engineers Inc. Auburn, Washington EPA Checklist 2. Is the site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? The nearest transit stop is approximately 0.7 miles, near the intersection of West Valley Highway and 37th Street NW. 3. How many parking spaces would the completed project have? How many would the project eliminate? The completed project will have garage and driveway parking spaces. Each home will have a minimum of two-parking spaces per lot (24 total). No parking spaces would be eliminated. Parking will also be allowed on one-side of the internal subdivision roads. 4. Will the Proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private). The proposal requires the construction of access roads to serve the future lots. The project proposes the creation of South 299`h Street, 67th Avenue South and South 298th Place. Also, 64th Avenue South will be improved to City standards. 5. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. 6. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur. Approximately 10 trips per family per day, for a total of 240 trips per day. Existing peak volume occurs between 16:45 and 17:45. The new peak volume will probably occur in the same time range. See attached Traffic report. 7. Proposed measures to reduce or control transportation impacts, if any. Traffic Impact Fees will be paid as required by City code. PUBLIC SERVICES 1. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. Yes, the proposal will result in an increase for those services typical of a residential development of this size and nature. The need for public services such as fire and police protection will be typical for a residential development of the size. School age children residing in this development will attend schools in Auburn School District. © 2010 D. R. STRONG Consulting Engineers Inc. Page 12 of 13 Preliminary Plat of Wyncrest SEPA Checklist Auburn. Washington 2. Proposed measures to reduce or control direct impacts on public services, if any. In addition to payment of annual property taxes by homeowners, the proponent will mitigate the direct impacts of the proposal through the City's traffic and school mitigation programs, if required. UTILITIES 1. Circle utilities currently available at the site: Electricity, natural qas, water, refuse service, telephone, sanity sewer, septic system, other. 2. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Electricity Puget Sound Energy Natural Gas....... Puget Sound Energy Water & Sewer... Lake Haven Utility District Telephone........... Verizon General construction associated with extending dry utilities and the sewer and water main extensions. SIGNATURE The above answers are true and complete to the best of my stand lead agency is relying on them to knowlA make Signature: Date SubmR:1201010110067131DocumentslRep orts4PreliminarylSEPA 10067.doc Preliminary Plat of Wyncrest © 2010 D. R. STRONG Consulting Engineers Inc. Page 13 of 13 Auburn, Washington SEPA Checklist FINAL STAFF EVALUATION FOR ENVIRONMENTAL CHECKLIST SEP11-0011 Date: June 20, 2011 Project Name: Wyncrest preliminary plat Applicant: Harry Schneider 6510 Southcenter Boulevard, Suite #1 Tukwila, Washington 98188 Contact: Same as above Location: The intersection of 64th Avenue South and South 299th Street (Section 2, Township 21 North, Range 4 East). Parcel Numbers: 0221049052, 0221049214, 0221049216, 0221049054 Proposal: The purposed of this project is to vest permissions for a twenty four (24) single family residential lot subdivision and the necessary associated streets and utility improvments. BACKGROUND The project site is located withina quickly urbanizing area in the northeastern portion of the City of Auburn, in -an area where existing single family homes on large lots are being developed into higher density residential subdivisions. The project site includes. four (4) individual lots that have previous been developed and used as part of development of adjacent single-family homesites and associated outbuildings, the creation of internal private and external public roadways, forest harvesting, clearing and grading, ditching, installation of a culvert, pasture development and management and livestock grazing. The project site is dominated by a fallow pasture which is being overtaken with thickets and invasive shrubs. A seasonal drainage corridor enters the project site along the west-central boundary and continues offsite near the northwestern corner of the project site. This seasonal drainage corridor originated at the outfall of a stormwater pond associated with an offsite residential community well offsite to the west. The southeastern boundary of the project site is formed by the rather steep hillslope associated with the Lower Green River Valley. In 2004 King County Department of Development and Environmental Services investigated King County property (parcel number 0221049020), in order to assess impacts to streams and stream buffers due to the proposed property development. • The subject property of that investigation is located north of the proposed Wyncrest Subdivision. The City of Auburn has SPL08-0008 on record for that property as an application for a short plat of six lots. No action has been taken to forward that application, and no development has occurred. In 2003 compliants were made by Danny Litowitz. regarding a failing detention system in East View Vista. The original developer of the system did not complete the original platting obligations, and King County did not accept the pond or East View Vista offsite drainage for maintenance. Final Staff Evaluation for Environmental Checklist SEP11-0011 The applicant included this information in the Preliminary Storm Report submitted as part of the application materials. For questions 1. through 6. please see the checklist received 51512011 7. Future additions, or expansions: Upon approval of final plat the applicant plans to construct 24 single family homes. 8. Other Environmental Information: December 20, 2010 Geotechnical Engineering Study Wyncrest Residential Development November 22, 2010 Preliminary Storm Report for Preliminary Plat of Wyncrest March 21, 2011 Revised Storm Report for Preliminary Plat of Wyncrest December 7, 2010 Critical Areas Report Wetlands, Streams, and Wildlife habitats 9. Pending Applications: None. 10. Complete Description of proposal: The applicant proposes to develop 8.60 acres in the City of Auburn into 24 single family residential lots. Pavement Improvements: None at this time. The proposed preliminary plat for a subdivision of 24 single family homes will include pavement improvements including: the creation of South 299th Street, 67th Avenue South and South 298th Place. Also, 64 h Avenue South will be improved to City of Auburn standards. Utility Improvements: The applicant proposes a tract, 38,379 square feet in size, for a detention facility. The revised preliminary storm report submitted on March 21, 2011 states that "although historically, there have been drainage related complaints downstream fo the project sites, it appears that with the construction of the Span Alaska site, that runoff from the site does not reach 287°i Street where historically, the majority of complaints have originated. Project runoff will be collected and released per the Manual's requirements (sizing per the Western Washington Hydrology Model) which releases runoff at or below predeveloped runoff rates. During construction, standard sediment and erosion control methods will be utilized. This will include the use of a stabilized construction entrance, a permiter silt fence, and other necessary measures to minimize soil erosion during construction." The applicant proposes to construct the detention pond at an elevation of 269 feet. Staff concurs with the analysis performed by Earth Soluntions in the Geotechnical Engineering Study, dated December 20, 2010, and in the letter dated February 22, 2011, by geologist Scott Riegel who states "In our opinion, the detention pond location is feasible from a geotechnical standpoint. Subsurface flow rates within the proposed detention pond would be very low. The sand layer present within the current pong location is isolated, and limited to the margins of the seasonal stream located to the south and east. In our opinion, the detention pond will not affect the stream flow patterns because the pond is essentially isolated from the surrounding soil via a liner.° Mitigation measures proposed: Page 2 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 The property has two wetlands, that are classified as Class 3 wetlands by the Auburn City Code Chapter 16.10 Critical Areas. The applicant is required to buffer the wetlands with a minimum of 25 feet. The applicant complies with this requirement and proposes to put both wetlands into "sensitive area" tracts, one 34,175 square feet, the other 7,593 square feet: As no impacts to the wetlands are proposed, no mitigation will be necessary. The applicant proposes to discharge treated storm water runoff into the wetlands. Staff concurs with the analysis performed by Habitat Technologies and submitted in a Critical Areas Report, dated December 7, 2010, and documented in a letter, dated March 7, 2011 which states "With both an understanding of the physical and biological conditions of the onsite wetlands and an understanding of the proposed discharge of seasonal surface water into these wetlands as the 2-year, 10-year, 25-year and 100-year storm events it is the opinion of Habitat Technologies that these release volumes would not adversely impact the retained wetland areas or adversely impact local water quality. The placement of stormwater outlet structures along the outer boundary of the established buffer would also utilize Best Management Practices for discharge dissipation to further protect the retained wetland area." E N V I R O N M E N T A L E L E M E N T S 1. Earth A. General description of the site: x Flat rolling hilly x steep slopes mountainous Other B. What is the steepest slope on the site (approximate percent slope)? Concur with the checklist. The steepest slope is approximately 2%. C. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. Concur with the checklist. According to the most recent "Soil Survey King County Area, Washington", prepared by the USDA Natural Resources Conservation Service, the subject property is comprised mostly of Alderwood gravelly sandy loam 0 to 6 percent and 6 to 15 percent. D. Are there surface indications or history of unstable soils in the immediate vicinity?. If yes, describe below. Concur with the checklist. Please see the geotechnical report dated November 22, 2010. E. Describe the purpose, type, and approximate quantities of any filling or grading proposed. Indicate source of fill. This is an application for a preliminary plat. Staff must review a subsequent facilities Page 3 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 agreement application for street, sidewalk, and utility improvements. The preliminary plat does vest the application, and the applicant will be allowed to submit subsequent applications for grading, and fill on the property. The applicant proposes the construction of 24 single family homes and associated utilities and roads. F. Could erosion occur as a result of clearing, construction, or use? If yes, generally describe below. Concur with the checklist. Some soil erosion could occur as a result of clearing and. grading the property. G. About what percent of the site will be covered with Impervious surfaces after project construction (for example, asphalt or buildings)? Concur with the checklist. Approximately fifty percent (50%) of the site will be covered with impervious surfaces. H. Proposed measures to reduce or control erosion, or other impacts to the earth. Concur with the checklist. An erosion and sediment control plan will be submitted as part of the Engineering plans. Temporary erosion and sedimentation control measures such as hydroseeding and silt fencing will be used to reduce and control erosion. Sedimentation traps or ponds will be required and implemented as part of the erosion and sediment control plan. 2. Air A. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke)' during construction and when the project is completed? If any, generally describe and give approximate quantities if known. Concur with the checklist. B. Are there any off-site sources of emissions or odors that may affect your proposal? If so, generally describe. Concur with the checklist. C. Proposed measures to reduce or control emissions or other impacts to air, if any: Concur with the checklist. 3. Water A. Surface Water 1) Is there any surface water body on or in the Immediate icinity of the sif (including year round and seasonal streams, saltwater, lakes, ponds, describe type and provide names. If appropriate, state what stream or river it flows into. Concur with the checklist. There are two Class 3 wetlands located on the site. the 2) Will the project require any work over, in, or adjacent to (within 200 available plans. described waters? If yes, please describe and attach Concur with the checklist. The two wetlands are proposed to be placed in tracts and buffered by 25 feet: Development is not proposed within the wetlands, although work will occur within 200 feet of the wetlands. The wetlands, the buffers, and the tracts are shown on the plans submitted as part of the preliminary plat application materials available from the City of Auburn upon request. Page 4 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 3) Estimate the amount of fill and dredge material that would be placed in or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. Concur with the checklist. No wetland fill is anticipated. 4) Will the proposal require surface water withdrawals or diversions? Give general description, purpose, and approximate quantities if known. Concur with the checklist. Not applicable. 5) Does the proposal lie within a 100-year floodplain? If so, note location on the site plan. Concur with the checklist. The 100-year floodplain is mapped in the middle of one of the wetlands and will be protected by a 25 foot buffer. 6) Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. Concur with the checklist. B. Ground Water 1) Will ground water be withdrawn, or will water be discharged to ground water? Give general description, purpose, and approximate quantities if known. Concur with the checklist. Not applicable. 2) Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: domestic sewage; industrial, containing any toxic chemicals; agricultural; etc.). Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) is (are) expected to serve. Concur with the checklist. Not applicable. C. Water Runoff (including storm water) 1) Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quantities, if known). Where will this water flow? Will this water flow into other waters? If so, describe. Concur with the checklist. The applicant proposes a tract, 38,379 square feet in size, for a detention facility. The applicant proposes to discharge treated storm water runoff into the wetlands. Staff concurs with the analysis performed by Habitat Technologies and submitted in a Critical Areas Report, dated December 7, 2010, and documented in a letter, dated March 7, 2011 which states "With both an understanding of the physical and biological conditions of the onsite wetlands and an understanding of the proposed discharge of seasonal surface water into these wetlands as the 2-year, 10-year, 25-year and 100-year storm events it is the opinion of Habitat Technologies that these release volumes would not adversely impact the retained wetland areas or adversely impact local water quality. The placement of stormwater outlet structures along the outer boundary of the established buffer would also utilize Best Management -Practices for discharge dissipation to further protect the retained wetland area." The applicant proposes to construct the detention pond at an elevation of 269 feet. Staff concurs with the analysis performed by Earth Soluntions in the Geotechnical Engineering Study, dated December 20, 2010,.and in the letter dated February 22, 2011, by geologist Page 5 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 Scott Riegel who states "in our opinion, the detention pond location is feasible from a geotechnical standpoint. Subsurface flow rates within the proposed detention pond would be very low. The sand layer present within the current pong location-is isolated, and limited to the margins of the seasonal stream located to the south and east. In our opinion, the detention pond will not affect the stream flow patterns because the pond is essentially isolated from the surrounding soil via a liner." The revised preliminary storm report submitted on March 21, 2011 states that "although historically, the re have been the drainage related complaints downstream fo the project sites, it app that with construction of the Span Alaska site, that runoff from the site does not reach 287th Street where historically, the majority of complaints have originated. Project runoff will 'be collected and released per the Manual's requirements (sizing per the Western Washington Hydrology Model) which releases runoff at or below predeveloped runoff rates. During utilize will construction, standard sediment and erosion control method swill s It fenced aThis other include the use of a stabilized construction entrance, a pe necessary measures to minimize soil erosion during construction." 2) Could waste materials enter ground or surface waters? If so, generally describe. Concur with the checklist. Not applicable. 3) Proposed measures to reduce or control surface, ground, and runoff water impacts, if any: Concur with the checklist. Not applicable. 4. Plants A. Indicate types of vegetation found on the site: x Deciduous Tree: Alder, Maple, Aspen, X Evergreen Tree: Fir, Cedar, Pine X Shrubs: Willows Grass X Pasture Crop or Grain X Wet Soil Plants: Buttercup, cattail, builrush, Water Plants: Other Types of Deer fern, blackberry, holly, scotch broom x Vegetation: B. What kind and amount of vegetation will be removed or altered? Concur with the checklist. Approximately 79% of the site will be cleared. C. List threatened or endangered species known to be on or near the site: Concur with the checklist. Not applicable D. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, If any: Concur with the checklist. The two wetlands will be in "sensitive area" tracts and will not be disturbed by the proposed development. 6. Animals A. Indicate any birds and animals which have been observed on or, near the site or are Page 6 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 known to be on or near the site: x. Birds: Songbirds x Mammals: Small rodents, racoons Fish: B. List any threatened or endangered species known to be on or near the site. Concur with the checklist. Not applicable C. Is the site part of a migration route? If so, explain. The Green River Valley is part of the Pacific Flyway for migratory birds. D. Proposed measures to preserve or enhance wildlife, if any: Concur with the checklist. 6 Energy and Natural Resources A. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Concur with the checklist. B. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. Concur with the checklist. Not applicable. C. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: Concur with the checklist. 7. Environmental Health Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste that could occur as a result of this proposal? If so, describe. A. Describe special emergency services that might be required: Concur with the checklist. City of Auburn emergency services will be available to the newly developed homes. B. Proposed measures to reduce or control environmental health hazards, if any: Concur with the checklist. 8. Noise A. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? Concur with the checklist. Not applicable. B. What types and levels of noise would be created by or associated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Concur with the checklist. Page 7 of 11 Final Staff Evaluation for Environmental Checklist SEP114011 C. Proposed measures to reduce or control noise impact, if any: Concur with the checklist. Construction activities related to the project will be in accordance with the City noise standards and ordinances. 9. Land and Shoreline Use A. 'What is the current use of the site and adjacent properties? Concur with the checklist. B. Has the site been used for agriculture? If so, describe: Concur with the checklist. C. Describe any structures on the site: Concur with the checklist. D. Will any structures be demolished? If so, what? Not applicable. E. What is the current zoning classification of the site? The current zoning classification of the site is R5. F. What is the current comprehensive plan designation of the site? Concur with the checklist. The current comprehensive plan designation is for single family residential. G. If applicable, what is the current shoreline master program designation of the site? Concur with the checklist. Not applicable. H. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify: Two wetlands are located on the site and will be placed in designated "sensitive area" tracts. Part of the property is also designated as steeply sloped, that area will not be developed. 1. Approximately how many people would reside or work in the completed project? Concur with the checklist, approximately 56 people will reside in the completed project. J. Approximately how many people would the completed project displace? Concur with the checklist. Not applicable. K. Proposed measures to avoid or reduce displacement impacts, if any: Concur with the checklist. Not applicable. L. Proposed measures to ensure the proposal is compatible with existing and projected, land uses and plans, if any: Concur with the checklist. The proposal does not change the existing land use of the sites. The existing uses of the sites are compatible with the comprehensive plan. 10. Housing A. Approximately how many units would be provided, if any? Indicate whether -high, middle, or low-income housing. l 8 be Concur with the checklist. Twenty four single family middle-income housing units Page of wil 8 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 created. B. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. Concur with the checklist. Not applicable. C. Proposed measures to reduce or control housing impacts, if any: Concur with the checklist. Not applicable. 11. Aesthetics A. What is the tallest height of any proposed structure(s), not including antennas; what is the principal exterior building material(s) proposed? Concur with the checklist. The buildings will comply with the dimensional limitations in the R5 zone which limits buildings to no more than 35 feet. B. What views in the immediate vicinity would be altered or obstructed? Concur with the checklist. C. Proposed measures to reduce or control aesthetic impacts, if any: Concur with the checklist. 12. Light and Glare A. What type of light or glare will the proposal produce? What time of day would it mainly occur? Concur with the checklist. B. Could light or glare from the finished project be a safety hazard or interfere with views? Concur with the checklist. C. What existing off-site sources of light or glare may affect your proposal? Concur with the checklist. D. Proposed measures to reduce or control light and glare impacts, if any: Concur with the checklist. 13. Recreation A. What designated and informal recreational opportunities are in the immediate vicinity? Concur with the checklist. Would the proposed project displace any existing recreational uses? If so, describe. Concur with the checklist. Not applicable. B. Proposed measures to reduce or control impacts on recreation including recreation opportunities to be provided by the project or applicant, if any: Concur with the checklist. 14. Historic and Cultural Preservation A. Are there any places or objects listed on, or proposed for, national, state, or local Page 9 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 preservation registers known to be on or next to the site? If so, generally describe: Concur with the checklist. B. Generally describe any landmarks or evidence of historic, archaeological, scientific, or cultural importance known to be on or next to the site. Concur with the checklist. C. Proposed measures to reduce or control impacts, if any: Concur with the checklist. 16. Transportation A. identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any. Concur with the checklist. B. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? Concur with the checklist. The nearest transit stop is approximately 0.7 miles, near the intersection of West Valley Highway and 37th Street NW. C. How many parking spaces would the completed project have? How many would the project eliminate? Concur with the checklist. D. Will the proposal require any new roads or streets, or improvements to existing roads or streets, not including driveways? If so, generally describe (indicate whether public or private): Concur with the checklist. The preliminary plat proposes the construction of access roads to serve the future residential lots. The project proposes the creation of South 299 Street, 67m Avenue South and South 298' Place. Also, 64t` Avenue South will be improved to City of Auburn standards. E. Will the project use (or occur in the i be Grate vicinity of) water, rail, or air des- transportation? If so, generally Concur with the checklist. Not applicable. occur generated by the completed project? If F. How many vehicular trips per d would be known, Indicate when peak volumes Concur with the checklist. Approximately 10 trips per household per day, for a total of 240 trips per day. The existing peak volume occurs between 4:45pm and 5:45pm. The new . peak volume will probably occur during the same time period. G. Proposed measures to reduce or control transportation impacts, if any: Concur with the checklist. The applicant has submitted a traffic report and will improve 64th Avenue South. Traffic impact fees will be paid as required by the Auburn City Code. The applicant will provide for crosswalks for school children and other pedestrians as reviewed by the school district and approved by the City of Auburn. 16. Public Services Page 10 of 11 Final Staff Evaluation for Environmental Checklist SEP11-0011 A. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe: Concur with the checklist. B. Proposed measures to reduce or control direct impact on public services, if any: Concur with the checklist. 17. Utilities A. Please indicate below what utilities are currently available at the site: x Electricity x sanitary sewer x natural gas, x septic system x water x other -storm drainage x refuse service, x telephone Describe the utilities that are proposed for the project, the utility providing the B. service, and the general construction activities on the site or in the immediate vicinity which might be needed: Concur with the checklist. The project will alter any utilities. CONCLUSION DETERMINATION OF NON-SIGNIFICANCE Based on this analysis, staff finds that the proposal does not need to be mitigated under the powers of the State Environmental Policy Act (SEPA). Any probable significant adverse impacts on the environment associated with the proposal are addressed by the Auburn City Code and will be mitigated by the Auburn City Code, or by Federal regulations. The City reserves the right to review any future revisions or alterations to the site or to the proposal in order to determine the environmental significance or non-significance of the project at that point in time. Prepared By: Hillary Taylor, Senior Planner Page 11 of 11 tTAT r RECEIVED JUN 7,9 2011 State of Washington DEPARTMENT OF FISH AND WILDLIFE Mailing Address: 1775 12°' Ave. NW Suite 201, Issaquah, WA 98027 June 27, 2011 City of Auburn Planning and Development Department Kevin H. Snyder, Director 25 West Main Street Auburn, Washington 98001 ,Dear Mr. Snyder: SUBJECT: Determination of Non-Significance (DNS), Wyncrest Preliminary Plat, Application Number PLT10-0010, Unnamed Creek,. Tributary to Hill (known locally as "Mill") Creek, WRIA 09.0051, King County The Washington Department of Fish and Wildlife (WDFW) has reviewed the above-referenced DNS and has the following comments at this time. WDFW may submit fiurther comments if the project progresses. WDFW has reviewed the reports associated with the project. The "CRITICAL AREAS REPORT". contains a brief statement related to WDFW jurisdiction being limited to "...waterward of the ordinary high water line..." (OHWL). The Hydraulic Code (RCW 77.55.021 actually defines a hydraulic project as "...the construction or performance of work that will use, divert, obstruct, or change the natural flow or bed of any of the salt or freshwaters of the state" Such a project may or may not be within the OHWL and often is not, such as a bridge, outfall, or levee, etc. Waters of the state may include streams, ponds, lakes, estuaries, and marine waters and wetlands associated with these watercourses. Once the proposed project has selected a final design, it can be determined whether or not a Hydraulic Project Approval will be required for it. Thank you for the opportunity to provide these comments. If there are any questions concerning this, please contact me at 425-313-5683 or fisheldf@dfiv.wa.&o_v. WDFW appreciates the opportunity to collaborate with the City of Auburn in our efforts to preserve, protect, perpetuate, and manage the fish and wildlife resources of the state of Washington. Sincerely, c r Larry Fn Area Habitat Biologist LF:lf. COAubumDNSWyncrest.doc cc: WDFW: Eturaspe Habitat Technologies Exhibit 8, Number of Pages 2 Vdeb dalo: 04/2612007 AA LD, WAT ~rt~>~- _ . . ;l 1C.A I n.t~ - G=a:c~ul.1 I Y GL~ti~CIF Department of DavelopiTrctit and lcrnih•onmental Services VV? i Cry ~ L_A[311~i I'Y Ruildlny Services Division V l W 900 Oakesdale AVGnlla SOLIMWeSt 206-.296-6600. Renton, Washington 98057-5212 Or abmatO. f01'nlabl, c c. 206-296-6600 TTY2066-7.96-7217___ This ceriificale provides the Public Health - Seattle & tCing County Depal-iment and the Department of Development and Environmental Sentices with Information necessary to evaluate development proposals; Do not virile In this box i Name CA . Number _ l-H I r~ El Building Permit Preliminary Plat or PUD I` i 1{1 ~r Ft Subdivision Rezone or other: CA r ~ Applicant's name: i'J CSC ~7 - i Proposed use:, Z Location (attach maj) and legal description if necessary): cf t' =1rf~==isi'l.ti'r,~' !Z°vMiio~i9 7 rf . 1: ❑ a, Water eau be provided by service connection only to an existing . (size) viater main (hat is feet from the site. on b. Water service will require an Imlirovement to the water system of. (1) U feet of water main to reach the site; and/or (2) The conslnlclion of aVislribut}or;-system on thesite- and~/orr r ~url;~ r7• - •Z, FP2 x 3 . Other (describe): V. 2. [ a. The water system is in conformance wilh a County approved water comprehensive plan. OR ❑ b.- The water system improvement is not in conformance with a County approved water comprehensive plan and will regidre a water comprehensive plan amendment. (This may cause a delay in issuance of a permit or approval.) .a.. The proposed project is within the corporate limits of the district, or has been granted Boundary Review Board approval for extension of service outside the district or city, or Is within the County approved service area of a private water purveyor. OR . ❑ b. Annexation or Boundary Review Board (BRB) approval will ba necessary to provide service. V A. I a. Water (s or will be available at the rate of now and duration indicated below at no less than 20 psi measured at tlJPC) p nearest fire hydrant 0r4- 51TE feel from the building/property (or as marked on the attached m c:) 9 o M Rare oftlow of Peaic Doinwid: ❑ less than 500 gpin (approx. gpro) ❑ 500 to 999 gpm [a 1000 gpm or:WQlC C-) ❑ flow test of gpm ❑ calculation of gpm Duration: ❑ less. than 1 hour ❑ 1 hour to 2 hours F112 Fours or more Other: - Q _ t'D (Note: Commercial building permlls which include multifamily structures require flour lest or calculallon.) tTl ~ _ yr, OR ❑ b. Water system is not capable of providing fire flow. l~ a. • Water system has certificates of water rights or water right claims sufficient to provide service. A x OR ~ ❑ li, Wator system does not currently have n'ecesgarywatet rights or water right claims.. Comments/conditions: !Ir#T1=~2SF~<V1GC CoisNEC)0Q AHC_lCINT101QS KCQot KF-0 I certify that the above water purveyor information is true. This certification shall be valid for one year from elate of signature. LAKEHAVBN UTILITY DISTRICT 61f-L Nf'~=-~~ Agency name: S' natory nam Title Slgnature Date Highest , / nrlin. si In h -essure `Lone; - Elevatioal of I roperty SOU / 1~y r r?E i ; Est. Mix. Pressure i 3 _P - I_owesf ( T1ie District, at its sole discretion, resei-ves the fight to delay Ol' deny Water service Lased tlpoii ~ ca acit: limitations in District and Offiel' Piai-veyor facilities. Mier availability foal.r_:___-___.--..___._~-=-------==- Rev. 05-19-2003 Pnc~e '1 of 1 Pao-e 1 of 1 LIOn Mai s .li1U rT Is~li•r.'I $ ti Hydrant 0n-Site x as exi 299TH ~ 2tfft , © 2006: Lakehaven Utility District" neither warrants nor guarantees the accuracy of any facility information shown. Facility locations and ` conditions are subject to field verification. litip://columbia/li.otViiiap.aspx 11/10/2010 Exhibit 9, Number of Pages 2 Web date: 0412612007 i/- ABILI. Kip~gCourtty KI~lG'GUEINW,'-d °I~1fA~~ al• Department of Development and Environmental Services aUILA~l{ T! , ti ERU Building Services Division 000 Oakesdale Avenue Southwest Renton, Washington 96057-5212 For alternate formats, call 206-296-6600. 206-296.6600 TTY 200-296-7217 f This certificate provides the Public Health - Seattle & King County Department and the Department of Development and Environmental Services with information necessary to evaluate development proposals, r 4.10 Do not unite in this box Number Name ❑ Building Permit preliminary Plat or PUD Port Subdivision ❑ Rezone or other: Applicant's name: rte s 2.1 Proposed use: l~ w t~ Location (attach map and legal descriplion if necessary): . e• Y o o - - i/ 1. ❑ a. Sevier saluicecan be provided by side sewer connection only to an existing size sewer feet from the site and the sewer systern has the capacity to serve the proposed use. OR b. Sewer service will require an improvement to the sewer system of: ® (1) 3 5 feet of sewer trunk or lateral to reach the site; and/M (2) The construction of a collection system on the site; and/at- DY-UY1~pi71_t~ ~xtE~~51Ut~ hC~t:r-l-r~r.rJT tZr~?Jit.G.'~.1~xT)=1Js~ TD [ (3) Other (describe): ~t✓rG Iw2, 11XAr PEt2 ( v i 1+r~~; N Y 2. r' a. The sewer system improvement is in conformance with a County approved sewer comprehensive plan. IT OR ❑ b. The sewer system improvement will require a sewer comprehensive plan amendment. °II %1D , m 3, a. The proposed project is within the corporate limits of the district or has been granted Boundary Review Boar fl-"' approval for extension of service outside the district or city. _ OR ❑ b. Annexation or Boundary Review Board (BRB) approval will be necessary to provide service. ;4J 1/4. Service Is subject to the following: a. Connection charge: (D gL- C.(~irCyt✓1 x=17 b. Easement(s): A-5 t,.GQ0tP-eD c. Other: j1=~ iJ 0 5 l'+2VtC'L- Coo-QEC'-Q0Q P1=i~tr~l T S ~'UCyrf Comments: * The District, at its sole discretion, raeerves the right to delay or deny sewer service based lipolt capacity limitations in District and other Purveyor facilities. I certify that the above sewer agency information is true. This certification shall be valid for one year from date of signature. 4 LAKERAVEN UTILITY DISTRICT Agency name Sign Cory name ,`,j1. / Title Signature Date sewer availability form.doc b-cert-sewer.pdf 02-07.21102 Page -1 of f Page 2 of 2 ~j to 7-1 GS~~X l .r•fr S F-: 3 c0 299TH - -33 5 Feet ~ - 1 Taft 'ter' © 2006: L.akehaven Utility District neither warrants nor guarantees the accuracy of any facility infonnalion shown. Facility locations and conditions are subject to field verification. llttp://co]Llnibia/lioiVmap.aspx 11/10/2010 Exhibit 10, Number of Pages 37 Preliminary Storm Report C06 *R0 ,2zo,, k- 0 for PRELIMINARY PLAT OF WYNCREST South 299th Street & 64th Avenue South, Auburn, Washington E A. ✓0 Q~ WAS ljf aP ~a 6 z 01 A DRS Project No. 10067 City of Auburn Project No. PLT10-0010 Owner/Applicant Schneider Homes, Inc. 6510 Southcenter Boulevard, suite #1 Tukwila, WA 98188 Report Prepared by M D. R. STRONG Consulting Engineers, Inc. 10604 N.E. 38th Place, Suite 101 Kirkland WA 98033 (425) 827.3063 Report Issue Date November 22, 2010 Report Revised March 21, 2011 PRELIMINARY PLAT OF WYNCREST PRELIMINARY STORM REPORT TABLE OF CONTENTS 1. NARRATIVE 1 ll. UPSTREAM TRIBUTARY AREA 5 III. SITE DRAINAGE 5 IV. DOWNSTREAM ANALYSIS 5 V. REVIEW OF EXISTING RECORDS 7 VI. CONCLUSION 9 LIST OF FIGURES FIGURE DESCRIPTION 1 VICINITY MAP 2 2 SITE MAP 3 3 KING COUNTY IMAP COUNTOUR MAP 4 4 STREAMS & 100-YEAR FLOOD PLAINS 10 5 WETLANDS 11 6 EROSION HAZARD AREAS 12 7 LANDSLIDE HAZARD AREAS 13 8 SEISMIC HAZARD AREAS 14 APPENDICES APPENDIX A DOWNSTREAM MAP .........................15 APPENDIX B DOCUMENTED DRAINAGE COMPLAINTS 16 APPENDIX C DDES INVESTIGATION LETTER 17 APPENDIX D STORM DRAINAGE POND CALCULATIONS...... 18 i i © 2010 D. R. STRONG Consulting Engineers Inc. Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington PRELIMINARY STORM REPORT DISCLAIMER: This report was prepared at the request of Schneider Homes, Inc. for the 8.55 acre parcels known as a portion of the Southeast Quarter of Section 2, Township 21 North, Range 4 East, WM., in King County, Tax Parcel Numbers 022104-9052, 9214, 9216, 9218 and 9054 (Site). D. R. STRONG Consulting Engineers Inc. (DRS) has prepared this report for the exclusive use of DRS, the owner, and their agents, for specific application to the development project as described herein. Use or reliance on this report, or any of its contents for any revisions of this project, or any other project, or by others not described above, is forbidden without the expressed permission by DRS. 1. NARRATIVE This Offsite Analysis was prepared in accordance with Section 3.4.10 of the City of Auburn 2009 Surface Water Management Manual (Manual). The Site is located approximately at the intersection of South 299th Street & 64th Avenue South. The Project is the preliminary subdivision of 8.55 acres into 24 detached single-family residences. All existing improvements will be demolished. Access to the plat will be from 64th Avenue South. Developed Site runoff will be collected and conveyed to one combined runoff control/basic water quality (RID) facility, detained, treated for water quality, then discharged to the onsite Stream. l t 0 2010 D. R. STRONG Consulting Engineers Inc 1 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington FIGURE.1' VICINITY MAP $ 2292ND S S 296 TI-! bE , 9TH - -N SITE 28114 .J t1 ;rt S 304714 RT e J z ~ V) - W SL ~ s r VICINITY MAP i I ©:2010 D. R. STRONG Consulting Engineers Inc 2 Preliminary Plat'of Wyncrest Preliminary Storm Report Auburn; Washington FIGURE 2 SITE MAP i i i © 2010 D. R. STRONG Consulting Engineers Inc 3 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington i ~ S 24210 S T } I Irv( Q 0 'F _ i { ; t r•>~ °fCIIKII I_1/0 P Q a j ODI N co J, W Of D. 3: SITE 2EN 5T z z D _1 I h^c l1=i.S I 1- 1 W W IL 111 ~I 1 V: { : :L,F-fr ~ a 0 roulA~R[eARy O_ Ii( ~ ~I 3 I f f J VI 1 _ CINITY MAP ' I - I ;J. l+ _ _ NATION ~••i ~rf -...._-APPL WTX OF s 30°7x Sr. /94TH AVE. S + 0 2 2101-9 0 2_ MT. 6214. 9216 S 298 If _PL.~ 9051 v Ull IS ~ S~_'S9A; I 1 -S1LNA 60N_R-S ~ E- fT:S Isi4 I r'. D 6D iS' l~ I I I DES+wATWN-0.-S (n N ~ D(SMCT. W (E HAVEN UTLITY CGITICT wCC O FOUND CONCRETE D.SMC1 1210 O ED ~~9~~1! C• i I Z VAN 7' fJ,aSE D~ZS %,'4 ! T ! 4 DtSTACT 140 = W V ~7C~RONT i I N VFNZDH a z Q .N. Lit LLI Y c~ I F I I• .1 PUGET SARA ENERGY Q = 5' II E/ 1 N~Sf-TIAIBJLF SIN.'tC FAYIY L' y I 1: MS-". 18- ELl f . Ii I•I _75`_"P~__7'O WT&...._ 24 ~~•n~ E- 11 L ,..~I '11 20 yV b ciy 1 F'~ 1 ~ ES--_,.._~ s 0.U-/'S7 w[RE _ jA- ff 2: I yI $e]q3 =b' P~~ 1 Fr ~ J -..__9.6D ACRES %21 ' - - 600 Ams *7 it .~e0D9lOlm Y-._-1.4(ACRES A MS _1- _ 3_. ~ - - - mp- STRONG a-___24 CONSMTRNO ENGINEERS _ 1 ~.L l r ~`•l IQO_.__.-3o ENRINCERS wJalEA9 6vmYOR3 P-1:•^r a-la .a_..- Tx~1k t LL :..Ni. wIDI NCSnaE6vT6m 1 T 1 W 1 E91NA7[N_R-5 IOLgANIMMI® .o- •o- Y' OE9GNA710L R-S C 425®21bfM RE`:ILF +c Y ' Lav-S J Y` - In J O s~ 3B 7_f LOT-._.~6~051 Sr, _ + i 1 ¢ - _--5/]INF101A Hcum 91G ~.es10 SOMCEHIOR BOULEVARD, S.TE 1 L' , = :i . 7 I i i •b 8.~.....-_-_ Tuc.uA~ 1016 DN 9e1ea ' 'e I i i ' e----"- (2D6) 248-24-M 11 [ L _-CRAACT_ HARRY $OINODEA b4°a UiaA~4p L-•J -y I~. 1 W •--NARRYKpMfOERIIa¢i[d1 "'L: T <:-L!Y_,,-Il r I 1 71773 Sr. _SCIwOMrt HOUES, PIG ~l SWTHCEITFA BOULEVARD, SUITE 1 A • I I l~~}~ I 11 -__._._-11R R~ IEA.FXNDTOH 9BTBB E,h,~g{a1 ;L ~f^. 1, '•~~I (206) 248-2471 JONAL J N 1 g-- ` I I s--- ._-Cwracr: wrRY sow[mER -_"rOSCHNFOUi S_Cw STRONG CONSTATNG ENrn1EUES WC Ir 3°TN PLACE, SATE 101 6°' 6ASONGTON 960x! n611 J. sC•`~, -`----(425) 627-3063 --_UANDIMAlm D RS O COU q4?!-\r.~p.J~.ya/•-f: ' - I A -DR STRONG CONSIILTTNO ENCANEERS. NL 6`O~ r• rtii~EV:F:4-'~ ''1 - i E''~', v IL-4 - ~m 10601 EJ[ 38TH PIACF, SUITE 101 I• c:,.+l~_t;nTC~.) r N 1 L MtarlAlm. wAslmlolw 6eoaL 2nss ~J L 1~1 d>ti.• R/J'SED [ROSSRA2R -•-(425) 527-3067 J 46 ra4 1~ i 9CNAEE 70 eE NSI 41RL `'-~1~ CONTACT: STEPWJI I StlWD, PA.S Il6fl -I - _ j 1 i -~"`4 RERWp~L1E E7s s7CK.SCIREH7DI4TRWOLC011 I - 4 ' FUND 4` CO)ICR` ETE IN _S. I I 11 I ) 2 QRASS DW( JIJD SC i UCNUY[NT tJ15E'0,Y5. WCUULTm sLtj~M9D - _ _ _ E~~a~"• fl LEGAL DESCRIPTIDN: PARCEL A: k' - 1HE NORTH HALF OF 119 SOUTHWST QUARTER OF THE NORM AS1 OUAATER Or THE SOUTKAST q MARTEN OF SECTION 2, TOW91P 21 UOR7JL RANGE 4 EAST. w¢VJETTE NEROIAN, IN . . ' _ Fm c'"TT. RASHNGIOM EXCEPT THE IMTH 98 MET OF I1C PEST 230 FEET THEREOF; AND EXCEPT NE MST 30 TIET L1VIG BONN OF "'0 NORTH 98 FEET; AND DRAFTED BY. YAJ EXCEPT THE WT is rout THEREOF. PARCEL F; DESIGNED BY: YAJ LOT 1. Kw.. CDIMTY SsW7 PLAT NUU9Q 2&7005• RECORDED UNDER RECOwNG M1uBrR I 8401040734. N KM CCLNTY. NNOONGTON; AND PRGXCT ENGINEER: YAJ L015 3 ANO 4. 10GETTER 1RTH AN WDINDED INTEREST N TRACT X. TONG COUNTY SHORT PLAT DATE: 11.2L10 WAABER 283065, RECORDED UNDER RECORpNC NUY9ER R6O)O40734. N LC41 CCLAM RA94NCrOV _ PRO.ECT NO.: 10067 I SHEET PI or 12 I 4TJm6WL~opFTT,y.+•F.WI•WL61-Yh1R).a.1 )/J./JN. XSCMMT COPYl00ilT ©2011, DR SIRbIG CWSULIMG fNONFFR$ MC FIGURE 3 KING COUNTY IMAP CONTOUR MAP t ~ ~ f f I a• i , i • 1 I (CI 201D%h,p 1 I ® 2010 D. R. STRONG Consulting Engineers Inc 4 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington 11. UPSTREAM TRIBUTARY AREA In evaluating the upstream area, we reviewed the King County iMAP (see Figure 3), which showed Site topography sloping generally to the east and to the north. A field topographic survey of the upstream area, performed in March and April of 2005, indicates that runoff enters the Site along the western and southern property lines. The upstream area for the Site is approximately 85.74 acres. However, 72.56 acres of this total bypasses the developable site through sensitive areas (runoff from this area enters the Site via the onsite stream and exits the site via the same). The detention pond serving the Hillis Hills No. 4 development, along South 300th Street, appears to discharge to the roadside ditch which eventually meets the onsite stream. Just south of the Hillis Hills subdivision, approximately 18.1 acres of undeveloped land appears to drain to the east as sheet flow and eventually enters the onsite stream. The Morning Crest Subdivision to the south also has a detention pond that discharges to the stream. Another 7.05 acres appears to reach South 300th Street prior to reaching the site, therefore it appears that approximately 6.13 acres of undeveloped land actually reaches the site. Furthermore, from the existing topography, it appears that of this 6.13 acres, the majority will enter the wetland in Tract "A" and bypass the developable area of the Site. Therefore, the upstream tributary area to the developable portion of the Site appears to be negligible and requires no further analysis. III. SITE DRAINAGE Runoff from the site has a single point of discharge. Runoff exits the Site via the onsite stream and continues towards 65 h Avenue South in a northerly direction where it enters a 36" concrete culvert and discharges into the existing ravine north of the Project. The majority of the Site slopes generally from south to north and east to west at slopes ranging from 3 to 15%. There is a steep slope area (>75% slopes) at the southeast corner of the Site. The Site contains scattered patches of heavily wooded areas but is generally vegetated with bramble. Where runoff enters the Site at 64th Avenue South, the channel is well defined and approximately 1' deep. Runoff is then conveyed north through the channel. As it reaches the property line, the channel depth varies from 8 to 12' deep with significant flow. Runoff exits the Site then enters a 36" culvert, through a birdcage and is conveyed beneath 65th Avenue South. A new residence and driveway will be constructed on each lot. i IV. DOWNSTREAM ANALYSIS The downstream analysis is further illustrated and detailed in the Downstream Map and Downstream Table located in Appendix "A". The downstream area is located within the Mill Creek Drainage Basin. The downstream path was evaluated by reviewing available resources, and by conducting a field reconnaissance. This field reconnaissance was completed in 2005 and confirmed on October 26, 2010 under rainy conditions. i 0 2010 D. R. STRONG Consulting Engineers Inc 5 Preliminary Plat of Wyncresl Preliminary Storm Report Auburn, Washington From Point "A" to Point "B" the flow path begins as northerly channel and pipe flow through the continuation of the onsite stream. The channel is well defined and well vegetated. Flow enters a 24-inch Reinforced Concrete Pipe (RCP) before reaching Point "B". No blockages or problems observed within this segment. Moderate flow observed (0 - 219'). From Point "B" to Point "C" the flow path continues as northerly pipe flow through a 36" RCP running beneath 65th Avenue South. No blockages or problems observed within this segment. Moderate flow observed (219 - 306'). From Point "C" to Point "D" the runoff flows north, as channel flow, into the ravine at slopes of approximately 75%. The channel appears to be rip-rapped. The channel down to the ravine was inaccessible due to the steepness of the bank, however no blockages or problems were observed within the accessible areas. Moderate flow observed (306'-362'). From Point "D" to Point "E" runoffs enters a mapped, gravel bottom stream and maintains its northerly direction. Wetland-like vegetation was observed along sides of stream. No blockages or problems observed within this segment. Moderate flow observed (362'-584'). From Point "E" to Point "F" runoff continues north via the stream. Channel is well defined, gravel bottom with vegetated sides. No blockages or problems observed within this segment. Moderate flow observes{ (584'-750'). From Point "F" to Point "G" runoff continues north. Channel becomes less defined throughout this segment and appears to be more of a wetland than a stream in some areas. Although the gradient in this area appears to be low (thus helping to create the wetland), the banks of the surrounding ravine area are steep enough to alleviate any potential backwater or flooding issues. (750'-1084'). From Point "G" to Point "H" runoff continues north. Channel is redefined with a gravel bottom. Stream area is extremely overgrown however, flow does not appear to be constricted or hindered in any way. No blockages or problems observed within this segment. Moderate flow observed (1084'-1684'). The ravine containing the stream ranges from 100-130' deep with side slopes ranging from 120-150%. The slopes are forested with mixed conifer-deciduous tree cover, consisting of Douglas fir and big leaf maple. (See Appendix "C", "DDES Investigation Letter" for confirmation of observations noted above) I i © 2010 D. R. STRONG Consulting Engineers Inc 6 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington V. REVIEW OF EXISTING RECORDS A review of the King County Water and Land Resources Division - Drainage Services Section Documented Drainage Complaints within one mile downstream from the Site revealed several recorded complaints within the last 10 years. The complaints seem to involve undersized and/or poorly maintained drainage ditches as well as flooding due to unpermitted filling and/or blocking of drainage swales. It appears that the ditches had adequate capacity for the existing upstream development, however, with increased development and past inferior detention requirements, coupled with unpermitted filling and grading and poor maintenance, the ditches now appear to be undersized and inadequate for the existing runoff. Appendix "B" contains one pertinent drainage complaint within one mile downstream of the Project. Historically, the downstream path conveyed runoff towards West Valley Highway through King County Parcel Nos. 022104-9073, 9074 and 9075. Due to increased flows from upstream development, at times of high flows, runoff was redirected north and/or northwest towards the Venture Ditch. These increased flows eventually exceeded the capacity of the Venture Ditch and directed overflow runoff towards the residential lots along South 287th Street causing drainage complaints due to flooding. Residents of these homes, in trying to correct these problems, appear to have aggravated some of the existing problems. In 2007, these parcels were developed into the Span Alaska site. With the development of this project, mitigation in the form of creation of wetland areas to accommodate high flows was installed. The project has created approximately 3.5 acre-feet of storage along the site's western boundary. The system diverts high flows into this storage area and discharges east to West Valley Highway thus helping to alleviate drainage problems for the residents of 287th Street. Per King County records, it does not appear that there have been any pertinent drainage complaints since the completion of this project. i I I I © 2010 D. R. STRONG Consulting Engineers Inc 7 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington Included, are sections of the King County Sensitive Areas Map Folio, which indicate the following: • Streams & 100 Year Floodplains: There are mapped streams within the downstream path of the Site. Field reconnaissance confirmed their existence and general locations (See Figure 4). • Wetlands: There are two mapped wetlands downstream of the Site (See Figure 5). • Erosion Hazard: There is a mapped erosion hazard area just downstream of the Site (See Figure 6). • Landslide Hazard: There is a mapped landslide hazard area just downstream of the Site (See Figure 7). • Seismic Hazard: There is a mapped seismic hazard area approximately one-half mile downstream of the Site (See Figure 8). i i 4 I © 2010 D. R. STRONG Consulting Engineers Inc 8 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington VI. CONCLUSION Although historically, there have been drainage related complaints downstream of the project Site, it appears that with the construction of the Span Alaska site, that runoff from the Site does not reach South 287th Street where historically, the majority of complaints have originated. Project runoff will be collected and released per the Manual's requirements (sizing per the Western Washington Hydrology Model) which releases runoff at or below predeveloped runoff rates. During construction, standard sediment and erosion control methods will be utilized. This will include the use of a stabilized construction entrance, a perimeter silt fence, and other necessary measures to minimize soil erosion during construction. ~I © 2010 D_ R. STRONG Consulting Engineers Inc 9 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington a FIGURE 4 STREAMS & 100-YEAR FLOODPLAINS I rg,~ 1L'~ r i ! I r~f7-''Q _:9. • Jy. .l 1 ..S c.LST l.,.-. 7-1 ' 15.52Bjit,1,¢J I~S- 1'~i n~'7,Ue,~: it i .L.. e.~~• =.-,Y '1 } ` ham. ~ ~ T _3, r ~s I I 1 r' r l.. w i I i z-S2321;1,08T, ! 2ND5 = j . 1 I + w/ -7 . ~__i-__.!•~~~1b~rt,~ 1 ,.~_623sT41~t.1-~ -~;i1 { ~.I{ _ r. s ZAM W z i N~ - -Qj r~ a 's I N sT ~ S ~5+4 [l[ JJ(jjp $w r, IL RI 1_( t] ~I 1r~,$Syf` •~Y Y.S~-ate, 11..y: CSWU Legend r elected Parcels , ~ Parcels Fakes and Large Rivers S 99 ° 1:1 s L._ l - County Boundary SAO Stream A/ Streams Highways w/ ckscl / 100 YearFloodplain Streets Mm2PaanniA Fah" Ci=23*r,"Id ATloriah lY Ci+rs3 local Undasaified i O 2010 D. R. STRONG Consulting Engineers Inc 10 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington FIGURE 5 WETLANDS ~-'142 44- Jk' 2a" ff_ TAX, 1: /2 6 Ll 4- 1 2 _-N -~A-J _3Yr"_'SJ jw ~Q .j T1 J., I r ;7nq k, j 811 4IJ D I OM 3 m rj : vil .71,tul J I t Legend Selected Parcels MoUls SAO Welland County Boundary Local Hlghways Parcels Streets Lakes and Large Rivers floway streams (cont) 0 2010 D. R. STRONG Consulting Engineers Inc 11 Prellmlnary Plot of Wyncrest Preliminary Storm Report Auburn, Washington FIGURE 6 EROSION HAZARD AREAS A, oi, m4 x i3 ?err SIB o alt -l - I `}~•~1 p( T a s5 r rev J- rszasTrlsr r f _ si JI - L ..__T--,. 11~~ ! , ~i_ t E ~y f i ' J yy t '511. `F M{ Ei ~ } 11•~`=s 1~ F ~ ~ ~ 'rv° ~ 1. - "rT~ , t I ! 11L ' i g~`~• ~r ('t'i~8fi~ifi a ~,5. rsi 4~ k~a~~ ~aNr za 5~ ~ k ~ ~t ~ t l~ k3 9 ~ 3 pg- gl~l- '17•~ ~1~+ ` V} ~-r =-•3-=---.37.TH.$r°~lVl~ .~f F -W 1y~1. AM 1~ ~C r j ~ LS-11 10- ~4q t J _ a TS 1- ~y Y F :Adli. }~7 "yi~J'P :f4J '~e,,i l3' J' .J l 97 ICU' seMy 5 - '::~~'~`~r` a° 1 ° Y~a.oaer#~s;a r a I ST.Hwj ;;-~h S•i 1',. r.~-IP "4~ 47 r••'c1 ~ .'•~i~~r~"+`~~ I ~i ~p ~ ; E. r .x^ ~ ~Se ~ `r ~rax aGSs ~ { j . a I icianraKAycouely , 2s tia ~3 s ,rte s )p z~ ~ « .13~3R1 r . + Legend Selected Parcels Artftb& a? = SAO Erosion County Boundary 71' LbcA Highways` Parcels Lakes and Large Rivers Streets uryhvW f/ Streams (cant) I © 2010 D. R. STRONG Consulting Engineers Inc 12 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington FIGURE 7 LANDSLIDE HAZARD AREAS\ 1, W-k jai `r F J 1 I 1 1 t__. i I _L T# - i ( i ~ I---t __ll!•,:~ L 1 i i ' 1 f 1 Lc J. N~r~e _,,_,.✓..i I.r ..Y _:t., F F f j r ~~~ttt r J i ` StDSr4P;.: d 2N17 7,._i 1 i E _ ~ Iq;T~z7 1 K"r` 1 T' -r S _ .--r ~ 3T.rFS.ST_1~LW.~. r 1 1" _ F 1~. Y" , f -~ps~~s Ya sr~-~'/-jam,-~-~s~ _ t~ t ~'pjW~~ - s~_ ` 7 IV vi~ t i f rO i xr~B" g~ IZ2 Legend Selected Parcels ✓ Arlwlak ® SAO Landslide ~1 County Boundary I Highways Parcels Streets Lakes and Large RWers tr9 Highway ff streams Q~ (cont) © 2010 O. R. STRONG Consulting Engineers Inc 13 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington • FIGURE 8,,, SEISMIC HAZARD AREAS Nit zv.J V X. LIT S' 'S, gi p .j ? 2t1 ~yt7{wr t 1 1T _ rH-sr..~►w. Tvi 4 V-1 Z'T _4 c 14IR 17 1 IX ST. rrr~-.;fir ~'~4 10 ff .4-LIA.. 13 (C}ZOIOK6igCevnly l~__.,.._. , _.._..~p 1313t1 r 1 Legend 99 Selected ParcelsI' arlari~s SAO Seismic rv~ Lom County Boundary Highways Parcels Streot6 Lakes and Large Rivers kagmevy f,f Streams (cont) I D. R. Pre010 arySlorm Report Consulting Engineers lnc 14 " PreliminaryPlato yncrest +`Auburn, Washington - eport I I I APPENDIX "A" DOWNSTREAM MAP i @2010 D. R. STRONG Consulting Engineers Inc 15 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington . i � . F T —_—� - I 1� E � I � N ¢ /)� y � � i � .� ' �- - �- - - � � � j � i I � �'� GRAPHIC SCAIE I ' � — � O p . 200 4 200 400 800 � — � �.� j__; I ; 1 INCH =400 FT_ . / ,�� : ' � - ' . `��./' I PROJECT _ � ��.� SITE — I � jl � �. 4�.1 � � � �uPSieunMC �;i ; � � ��3� � � � i � �'� ' � . � � � � `' I � � I , � - = � — I D!R. STRONG � . � coxwiro+c cxooacrts I . . �exwnas nu+u� an�mxs ' . - ' iasw'it xu w.�¢wu im� p�p,MA VOWi ��11J1).SM)6(K[ . . . . lLQM21�Ot tILL iPQ.. mur am m • . ....�s�eww. � i , � , DNMCC BY:� YAJ � � DESplED BC YN �I ' . ' � � PROJEtI FNGM[A:YN. oes.u.vao � � � wwici�xo:ioos� � . 9fEET I OF 1 � R:\Y010\0\10067\3�DraMings�Plota�PP\flg\Ol-3DSIOO67.tlwg fl/22/2010 IO.S6:D9,AM PST ��.COPr�ilO1TQ30�o,O.R 51RONCCONS71Lfi1G WGYNEClt5IN4 � APPENDIX 99 BOY µ ®OCUMENTED DRAINAGE COMPLAINTS { .i -d-' ..r 'mot: i 3 4 Z © 2010D. R- STRONG Consulting Engineers Inc 16. Preliminary Plat of, Wyncrest Auburn, Washington ' Preliminary S_torm Report 11M-30-2005 12 56 D. R. STRONG 425 827 2423 P. 09i15 MAR. 30. 2005 12:55PM KING CO, WIP,D NO. 1723 P. 9 TO: Brian Sleight, Senior From! Larry Cattle, Supervising Engineer ti =tea Weer EM : - RVa er, and Land Resources Division Storm-water Services °$ideWwiter Services Section .v;.'Y {7Yr"LF-j a' x WAI Ran" :a Wi-A DATE 01/17103 Brian, per our discussion I am forwarding this complaint for a review to determine priority scare for repair/maintenance of the constructed conveyance system tbrough the Litowitz properties. This situation wm also referred for DMI determination. Aocording to CPOSA staff they have not made a final determination of a possible project. I met with Kimberley Lockard and Megan Smith yesterday to clarify my e-mail response and provide additional documentation regarding.our previous involvement, I also `obtained a copy of the letter from Litowitz's attorney. That will give you an idea what their issues are. I have not received a response from ]em fer Knauer regarding proposed or identified opportunities as part of the Mill Creek Action Plan, I guess, at this time we are just looking to determine if the conveyance system cau be made funetional,through the NDA-F program. I think we should also determine if opening the conveyance will actually provide some relief or could it possibly create more of an erosion problem downstream. I i • i i i _ . - ~ SIGNED ~'.~hi1C~.?1?-Gr1YJ.7. ie - .3o L. M. J I r"Ul`lu YG Ua 1 L'-J 1 . LU' iJ MAR. 30. 2005 12; 55PM KING CO. WLRD NO. 1723 P. 10 From: Gettle, Larry Sent: Monday, January 13, 2063 7:56 AM To: Lockard, Kimberly Cc: Bissonnette, Pam; Grigsby, Daryl; Crawford, Curt; Knauer, Jennifer, Althauser, Don; Sleight, Brian Subject: RE: Litowitz Properties Good Morning Kimberly, Per your December 9, 2002 e-mail request Stormwatex Services Section (SWS) has reviewed the drainage situation in the vicinity of and on the Litowltz properties. Staff also reviewed the historic information related to the East View Vista plat development and the proposed Litowitz plat of East View Terrace. Staff from WLRD's Neighborhood Drainage Assistance Program (NDAP) and Drainage and Habitat Improvement (DHI) Program also visited the property to determine if the drainage situation meets the criteria to be considered for actions in those progea:ms. As a result of these reviews and site visits I can provide the following information. These specific parcels and adjacent properties experience historical flooding and erosion problems. Previous attempts at developing these properties were unsuocessful because of existing downstream basin wide problems. No small works project would solve the drainage problems affecting this or downstream properties or make, the property more attractive for sale or development. With that said, the following, information responds to yom specific questions. Bawd on your review, what is the nature and carne offloading problemm on these properties? Several factors affect the existing drainage pattertzs and impact to the drainage on the Litowitz properties. These properties were subject to detailed engineering and environmental reviews as part of the proposed plat development of East View Terrace. As part of the public hearing process K..U, L.eytham, Ph.D., P.E. provided a current conditions report to the Hearing Examiner. He stated in the report that development of the property above these parcels over the years has caused a significant increase in. flows. He indicates that flow control facilities were constaicted at these developments but because of being early designs their ability to control increased flows was questionable. He also states that the properties being situated at the bottom df and toe of a steep slope results in sediment deposition at the valley floor that has filled in or restricted flow in the natural channels and constructed conveyance systems. 1Ar. Leytham further indicates that lack of maintenance of constructed drainage channels contribute to the area flooding problems. Our site investigation confirmed the onsite erosion problem, lack of maintenance of privately installed drainage, and fitze sediment impact at the stream and wetlands on the valley floor. Are the East View Vista detention pond and/or stream diversions contributingfactors to flooding problems? -As stated above private property owner activities adjacent to and downstream of the I 1 uv♦ ._ru a.uu./ aa.. vu a/. i.. i..+ TGJ uGt GYGJ I 11/ iJ MAR, 30. 2005 12:55PM KING CO. WLP,D N0. 1723 P. 11 properties have some impact. The flow control facility serving East View Vista is not exacerbating the situation. Actually, the pond may be providing some benefit as a sediment basin prior to discharge into the adjacent wetland area to the east. Is this detention pond part of the County's facility tnffiqtenance inventory? No. The original developer did not complete the original platiimg obligations. As a result, Ding County did not accept the pond or East View Vista ofEsite. drainage for maintenance. Co uld WLRD's Facility 1ietro frl; Neighborhood Drainage Assislarcce Program, or ! Drainage and Habitat Improvement Program provide any options far reducing flooding impacts to this property? r • The Facility Pwro-fit Program would not repair or reconstruct the pond because the facility at East View Vista is not County owned or maintained. The Neighborhood Drainage Assistance Program (NDAP) alas, developed to respond to drainage problems affecting private properties caused as a zesult of upstream developrcmemt when no other County program exists to assist. Became of the number of problems a cost/benefit ratio and maximum cost was developed to prioritize the PtoJ'ects. The erosion conditions on these parcels affect only undevelped property and it is anticipated repair costs associated with any actions necessary to resolve the erosion problems would be beyond the scope of the program. I will however, refer the problem fox an engineering review to determine estimated costs to resolve the erosion problem and potentially provide "one time" maintenance on the constructed drainage,from East View Vista. Staff from the DM Program have visited the site and are reviewing the potential of funding a project to repair/maintain the conveyance system from the north boundary of East View Vista to the flow control pond. Again, because of the eosts associated with any solutions and the lack of identified habitat resources, opportunities will be difficult. Funding will be dependent upon project cost, public benefit, and opiWition of habitat. I have also checked with WLRD Flood Hazard Reduction staff to detem3ine any possible maintenance work identified through the Mill Creek Basin Action Plan. Apparently this Plan is scheduled for completion this summer. I will keep you informed if there are any early actions recommended that could provide some relief within this tributary area. I have attached some site photos for your information. . I I will info-an you when preliminary costs estimates and final determinations are completed through the NDAE and DHI revigws. I would eXpect the final determinations within a code of weeks. Thanks you again for your request to review this drainage problem. Ifyou have any questions or 1 een provide further information please feel free to contact me at 6.026. IR [A - I A - - ri A 1002-0779-01•es 2062-0776-02-W 2002-0776-03-0a 2002.0779-o4-be f ! MRR--30-2005 L~:5tl D. K. 51 KUIW 4eJ ae r e4eJ r. Lei A-3 MAR.30. 2005 12:55PM KING CO. WLRD NO. 1723 P. 12 Date File Completed: April 1, 2003 Date File Taken: February 7, 2003 Date of Complaint: December 10, 2002 , ]late of Investigation: February 13, 2003 Fm: Gary-Paullleinke RE: NDA.P 13valctation for Complaint # 02-0778 Danny Litowitz 2654 Route A NE Moses Lake, WA 98837 Location Site: 59" Ave S & S 287" Street Auburn, WA Background Mr. Litowitz is concerned about a failing RID system in East View Vista (an old/off system). 'I'bis was phoned is by councilperson Patterson's office. Finding I spent about 2 hours walking through this site. I have had some past exTerienee wit$ this area from a complaint filedby Mara Heiman & Tom Nirschell (96-2004). Water from the last View area has been a problem over the years as construction and possible diversions of streams in that area have occurred. It was a clear clay and no rain had fallen for several days at the date of my inspection. I found a control stntcture (CS) at the bottom of the hill and at the NE corner of the RID pond. I could hear running water in the CS but was not able to lift the lid. Itv,as solid concrete. I also heard water flowing in the other 03's down the hill. There was a section of exposed 12-inch CUP about half way down the hill. In some areas, it was perched about 4-5 feet above the ground. Options and Discussion The object of this inspection was to determine the cost of cleaning and fining the system so King county can accept it for maintenance. The attached cost estimate is based on the following assumptions: 1. It is assumed that the upper most catch basin would be damaged by the removal of three trees surrounding it and would have to be replaced. 2. Bulk excavation for the pond it based onrestoring the pond depth to 4-feet as opposed to the Current pond depth of 1-foot The current pond depth was estimated from the banks of the pond and should be considered approximate. 3. It is assumed that thee flatter sections ofpipe at the bottom of the hill need to be cleaned, although the lowest catch basin could not be opened to cotfrm this. The upper sections of the pipe, although steep enough to wash sediment out, should be cleaned to clear root intrusions for other obstauctions. 4. Access to the pond for the cleaning and excavation is by far the most expensive action needed. The length of road needed is based on needing a road of 10% grade from top to bottom based on the available topography maps. Actual Construction of the obcess road may require a longer road. Alternative access may be available from the north. Alterrtitlve access would require permission from the adjacent property owners, which is unlikely since they ware opposed to the development of this property. 1 5. No geotechnlcal report was available for this estimate. Good soil conditiotis were assumed. Poor soil conditions would substantially increase the cost for an access road. i MAR.J30.J2005~12:55PM KING CO. WLRD ~NO. 1723._.P. 13 6. The volume of material needed to cover the exposed pipe and fill the eroded areas is based on the estimated length, depth and width of the eroded areas. Area with eroded channels less than 3-feet are not included in this estimate. 7. The rock in the estimate would be used for road support (gablons), and erosion control at access points. 8. This estimate does not include permitting or design costs. It is anticipated that permitting costs would be substantial. 9. This estimate is based on using Kin_ County DOT construction staff Costs are based on the 2001 performance standards, I, Csarv-Paul Reinke, certify that the photographs shown in this report are true, mourate and unaltered reproductions of photographs that I took on. Signature Date Signed Photo 1: Facing 1;. This shows the erosion of small gullies is the slope. Arrows show direction of flow (downhill). I i I I I APPENDIX "C„ DDES INVESTIGATION. LETTER t, z is I © 2x10 O. R. STRONG Consulting Engineers Inc 17 Preliminary Plat of WYncrest Prellminary Storm Report Auburn, Washington mD/2B/2004 08:02 4252263187 PBC HH PAGE 02 Jun 25 04 02!54p ]]DE5 urrent Planning Zes 28. 7051 P- I PcL%1418 Fax Nots 7671 n d P P Fro Co C4C icing Qon;aty Ronal Phom e Dcpurtmo: i of Development Fax $ S1 fa" and DrtvioonrnPjiW Servlow ~(1 pnl~nlnl.Atiu~ua?wthtvNal Todon, WA VII(Mi-77-911 June 25) 2004 I& Matt Pool fool 131c)tbers Coustructiora P.O. Boa: 3023• Renton, Washington 98056 Rg: Permit A lication No. L04SA.O St IM AB5iMBLO Dcarlult. Pool: Afield investigation and a sensitive 6011 review of the King CountY property (PAMel #0221 44 9020) - has bees: performed to assess impacts to strj=,$. and stream buff= due to the proposed property developinuit. Regulation: of these scnsitive areas is subject. to the provisions Offing County Code 21A.24 1;Scxl3it-lve Areas Code), whioh protects property owners, tho general public and the envirorurrent fmin damage resulting from innpropor development cif, environmentally sensitive land. On June 17, 2004, I field-investigated the property. Pertinent information horn the Kitig Cotin.ty and.. WDFW databases were reviewed to detetarpne the ex-terttand classification of streams near or an the proretty. The property contains a stream that i=ives a dual rating as it crosses the property in a gewrally south to north-aligmnent. The stmam on the property -originates approximately one-third male offsite, in a forestedlscrub- shrub wetland complex on the south side (1f 65" Avenue South, The wcdand is a spring-fad, palustriue forested (PFO), palustrute scrub-shrub TSS) Class 2 wetland area.. The wetland gra".'y fonts into a stream channel as tie topography begins to drop. in elevation at the stream headwaters. Stream banks veer away at approximately 40 % gradient and where the stream enters the culvert that channels it under 65* Avenue South, it is A.pproxim rely 12 feet below the street level. '.(he stream flows througb a 3' diamieter, 40' long concrete pipe at 3 % gmdc;, and then flow8 tl7touo a birdcage structtue and inki a 3' diameter, 551 long, concrete pipe at 10% grade. The stv ara then discharges.into dLO bead of a steep ravine ov the subject property. The stream then flows dawn a'rip-rapped channel (approximately 75 % grade) for, approx.tmitely 200' until it reaches the raylne bottom, where the channel bas out throu9b (fire high plateau; the stream continues fioa~4 north, thrtoagh tt;e ravine, until itev,61L lly flows into a large Class 2 palustrinc forested (PPO), paluslriaie scrub-shrub (M), palusVine emergent 1 3 06/28/2004 08:02 4252263187 PBC HH PACE 03 Jun 25 04 02:54F DI)L Current Planning 206 .2 7051 t'•2 Mr. Matt Pool 3unc 25, 2004 Page 2 (PBM) glass 2 wetland area. The wetlamtl butts against the Vest Blaney i'Ugltway and its drainage discharges, via rt vert, and eventually reaches the Gtwn River. From thr, culvert auti~ll near the southern property bon-dary on 650, Avenue South, aDd fur approximately 200 linear feet dowugradicnt of the outfall., the strearu_now it intermvttemt and the stream ki des'sguated as Class 3. At that point, the stream. reaches the ravine bottom, Where streamflow appears to be perennial and Vie stream is designated as Class 2P. The stLeHu' flows for approximately 300' until its chaand becotlleS Indistinct as it spreads out and flows into a large, Class 2 palustrine forested (PFO), painstrine scrnb-shrub (PSS), paluetrine emergent (MM) wetland area, that is a barrier to upstream fish migration from the Green River. The ravine was approximately 100-130',Jeep and sideslopes ranged from 120- 150+ The slopes were forested with a mixed conifer-deciduous tree cover comprised primarily of ncludtd Douglw,41, big-leaf maple, red alder, and black cottonwood; und r tory she stream deg reend elderberry, I~Imalayan blackberry, swonifern, and some Oregon grape.' at the b3ttoQ of the ravine averaged app oximtey 1.2% gradient and contained several small pools and spawning gravels of the size and quattdty that could have been utilized. by resident cutthroat trout. Tke stream width avaras;ed approximately 4.0 feet and ranged from two to eight imcbes deep. I was able to perforn'1 a visual fis11 survey in ft shallow stream, and no fish we:.-c found; there was no fish babita.t upgradient of the 65" Avenue South culvert. The Class 2 wetland at the north end df the ravine presents a barrier to anadromous and resident salmonids. 't'herefore, the stream is designated as Class 2P throughout the ravine stream reach. KCC 2 tA.24 requires that a sensitive awas buffer of native vegetation shall be provided for the stream areas. The buffer setback of the Class 2P -stream segment is 50 feet; the buff-or setback of the Class 3 stream segment is 25.1eet. A 15-foot building setback line (BS13L) is required beyond the buffer boundary of the streann. The steep slopes will likely require a setback that can range from 10-180 feet basod on georeclmical studies, runoff issues and other criteria that will be reviewed by Gcote6nical Engineers at the County. The steep slope buffers may extend beyond the mandated stream buffers, in which case the stream buffer issue would be moot. Sensitive area bui"fors are mandated for the purpose of protecting wctlan.ds and streams. Buffers of native vegetation help wetlands to maintain both hydrological and biological functions and values, These include storm water conveyance and food chain support, as well as flood prevention. and salmon production. In order for buffers to perform these duties they must remain in an undisturbed condition as a "setback. area".in which native plants are allowed to grow: non- native specics are not allowed to be introduced into this area (KCC21A24.330). Exeepl for some specific exemptions, tbc; Sensitive Areas Code does not allow alivrat:ion of son- sitive ureas or their buffers without express permission from the King County Department of 2 I . 05/28/2684 06:02 4252263187. PBC FH PAGE-71.1 04' _ Jun 25 04 02:55p 1111E ~ Jurrant Planning Ofi ~L 7051 Mr. Matt Pool . . June 25, 1,004 Page 3 DevcloPanent and Environmental Services: "Alterattatr" means, amoslg other tSungs, the removal . , - of any vE:&tation or the grading of any soil, . develop tltis property widlie addition of single-family residences If you propose to subrliivide and . . . (SBR), y~su will need 6 submit the following infotMation; „ a It' epare a slit plan and include thy: location of the stream and buffers; top-of .slope, steep slope' setbacks, and the 154bot BSBL described above. o t~eam Report, pnly £f you disagree with the stream classification, provide a stream 1-eport describing the on-site stream; classify the OIL-site segment of the stream and provide justification for the stream classification, Include a site plan showing the location of the stream and buffers, top-of-slope, steep slope setbacks, and the 15-foot. 135131, described above. Once your short platlbuildtng plan is approved, you will then be regiAred to file a Notice-on- Title fo_ the sensitive areas on site. You,011 need to record drose documents at the King Co~ty third floor of the King County O bons located ~m the , . Office of Records and Rtec Building, 500 .14ourdt Avenue, Seattle.. _ If you gave any questions, you may leave message forme at 206-296 7115, and l will retian your' call as .oon es po$sble. . Sine 1y, . S . Pools, Senior Ecologist di r ' Development Serviccs.Sectibn tcM0111i 419057.doc 3 I • APPENDIX "D" STORM DRAINAGE POND CALCULATIONS The storm drainage pond was designed using King County Runoff Time Series software. The Project is required to match the developed condition's discharge rate to the predeveloped rates ranging from 50% of the two-year peak up to the 50-year peak. Area Breakdown: Predeveloped: Till Forest: 6.853 acres Impervious: 0.131 acres Developed: Till Grass: 2.761 acres Impervious: 4.223 acres - Impervious area was calculated assuming full home site build-out of 4,000 s.f. per lot. KCRTS Software output • 7 _ -~1 - - Rre a p File Ed{t Format View ~ielp - - 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 (CF5) (CFS) Period 0.451 2 2/09/01 18:00 0.602 1 100.00 0.990 0.139 7 1/05/02 16:00 0.451 2 25.00 0.960 0.352 4 2/28/03 3:00 0.352 3 10.00 0.900 0.033 8 $/26/04 2:00 0.352 4 5.00 0.800 0.210 6 1/05/05 8:00 0.310 5 3.00 0.667 0.352 3 1/18/06 20:00 0.210 6 2.00 0.500 0.310 5 11/24/06 4:00 0.139 7 1.30 0.231 0.602 1 1/09/08 9:00 0.033 8 1.10 0.091 computed Peaks 0.551 50.00 0.980 4 © 2010 D. R. STRONG Consulting Engineers Inc 18 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington 4 D:v.pks =Thifepad r a `Edit . For..roat diew el _ - - _ - Flow Frequency Analysis ? Time series File:dev.tsf ProjeCt Location:5ea-Tac ---Annual Peak Flow Rates--- -----Flow Frequency Analysis------- Flow Rate Rank Time of Peak - - Peaks - - Rank Return Prob (CFS) (CFS) period 1.27 6 2/09/01 2:00 2.58 1 100.00 0.990 1.03 8 1/05/02 16:00 1.60 2 25.00 0.960 1.53 3 2/27/03 7:00 1.53 3 10.00 0.900 1.10 7 8/26/04 2:00 1.34 4 5.00 0.800 1.33 5 10/28/04 16:00 1.33 5 3.00 0.667 1.34 4 1/18/06 16:00 1.27 6 2.00 0.500 1.60 2 10/26/06 0:00 1.10 7 1.30 0.231 2.58 1 1/09/08 6:00 1.03 8 1.10 0.091 Computed Peaks 2.25 50.00 0.980 Y .j r Retention/Detention Facility Design Type of Facility: Detention Pond Side Slope: 2.00 H:1V Pond Bottom Length: 150.00 ft Pond Bottom Width: 70.00 ft Pond Bottom Area: 10500. sq. ft Top Area at 1 ft. FB: 17444. sq. ft 0.400 acres Effective Storage Depth: 6.00 ft Stage 0 Elevation: 0.00 ft Storage Volume: 79992. cu. ft 1.836 ac-ft Riser Head: 6.00 ft Riser Diameter: 12.00 inches Number of orifices: 2 Full Head Pipe Orifice # Height Diameter Discharge Diameter (ft) (in) (CFS) (in) 1 0.00 1.38 0.126 I 2 4.20 2.31 0.194 6.0 Top Notch Weir: None Outflow Rating Curve: None I Stage Elevation Storage Discharge Percolation Surf Area (ft) (ft) (cu. ft) (ac-ft) (cfs) (cfs) (sq. ft) 0.00 0.00 0. 0.000 0.000 0.00 10500. 0.01 0.01 105. 0.002 0.006 0.00 10509. I i © 2010 D. R. STRONG Consulting Engineers Inc 19 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington 0.03 0.03 315. 0.007 0.009 0.00 10526. 0.04 0.04 421. 0.010 0.011 0.00 10535. 0.06 0.06 632. 0.014 0.012 0.00 10553. 0.07 0.07 737. 0.017 0.014 0.00 10562. 0.09 0.09 949. 0.022 0.015 0.00 10579. 0.10 0.10 1054. 0.024 0.016 0.00 10588. 0.12 0.12 1266. 0.029 0.018 0.00 10606. 0.22 0.22 2331. 0.054 0.024 0.00 10694. 0.32 0.32 3405. 0.078 0.029 0.00 10783. 0.42 0.42 4488. 0.103 0.033 0.00 10872. 0.52 0.52 5580. 0.128 0.037 0.00 10962. 0.62 0.62 6680. 0.153 0.041 0.00 11052. 0.72 0.72 7790. 0.179 0.044 0.00 11142. 0.82 0.82 8909. 0.205 0.047 0.00 11232. 0.92 0.92 10037. 0.230 0.049 0.00 11323. 1.02 1.02 11173. 0.257 0.052 0.00 11414. 1.12 1.12 12319. 0.283 0.055 0.00 11506. 1.22 1.22 13475. 0.309 0.057 0.00 11597. 1.32 1.32 14639. 0.336 0.059 0.00 11689. 1.42 1.42 15812. 0.363 0.061 0.00 11782. 1.52 1.52 16995. 0.390 0.064 0.00 11875. 1.62 1.62 18187. 0.418 0.066 0.00 11968. 1.72 1.72 19389. 0.445 0.068 0.00 12061. 1.82 1.82 20600. 0.473 0.070 0.00 12155. 1.92 1.92 21820. 0.501 0.071 0.00 12249. 2.02 2.02 23049. 0.529 0.073 0.00 12343. 2.12 2.12 24288. 0.558 0.075 0.00 12438. 2.22 2.22 25537. 0.586 0.077 0.00 12532. 2.32 2.32 26795. 0.615 0.079 0.00 12628. 2.42 2.42 28062. 0.644 0.080 0.00 12723. 2.51 2.51 29211. 0.671 0.082 0.00 12810. 2.61 2.61 30497. 0.700 0.084 0.00 12906. 2.71 2.71 31793. 0.730 0.085 0.00 13002. 2.81 2.81 33098. 0.760 0.087 0.00 13099. 2.91 2.91 34412. 0.790 0.088 0.00 13196. 3.01 3.01 35737. 0.820 0.090 0.00 13294. 3.11 3.11 37071. 0.851 0.091 0.00 13392. 3.21 3.21 38415. 0.882 0.093 0.00 13490. 3.31 3.31 39769. 0.913 0.094 0.00 13588. 3.41 3.41 41133. 0.944 0.095 0.00 13687. 3.51 3.51 42506. 0.976 0.097 0.00 13786. 3.61 3.61 43890. 1.008 0.098 0.00 13885. 3.71 3.71 45284. 1.040 0.100 0.00 13985. j 3.81 3.81 46687. 1.072 0.101 0.00 14085. 3.91 3.91 48101. 1.104 0.102 0.00 14185. 4.01 4.01 49524. 1.137 0.104 0.00 14286. I 4.11 4.11 50958. 1.170 0.105 0.00 14387. 4.20 4.20 52257. 1.200 0.106 0.00 14478. 4.22 4.22 52547. 1.206 0.107 0.00 14499. 4.25 4.25 52982. 1.216 0.112 0.00 14529. 4.27 4.27 53273. 1.223 0.119 0.00 14549. 4.30 4.30 53710. 1.233 0.129 0.00 14580. I f © 2010 D. R. STRONG Consulting Engineers Inc 20 Preliminary Plat of Wyncresl Preliminary Storm Report Auburn, Washington I .G 4.32 4.32 54001. 1.240 0.141 0.00 14600. 4.34 4.34 54294. 1.246 0.155 0.00 14621. 4.37 4.37 54733. 1.256 0.167 0.00 14651. 4.39 4.39 55026. 1.263 0.172 0.00 14672. 4.49 4.49 56498. 1.297 0.188 0.00 14774. 4.59 4.59 57981. 1.331 0.201 0.00 14876. 4.69 4.69 59473. 1.365 0.213 0.00 14979. 4.79 4.79 60977. 1.400 0.224 0.00 15082. 4.89 4.89 62490. 1.435 0.235 0.00 15186. 4.99 4.99 64014. 1.470 0.244 0.00 15290. 5.09 5.09 65548. 1.505 0.253 0.00 15394. 5.19 5.19 67092. 1.540 0.262 0.00 15498. 5.29 5.29 68648. 1.576 0.270 0.00 15603. 5.39 5.39 70213. 1.612 0.278 0.00 15708. 5.49 5.49 71789. 1.648 0.286 0.00 15813. 5.59 5.59 73376. 1.684 0.293 0.00 15919. 5.69 5.69 74973. 1.721 0.300 0.00 16025. 5.79 5.79 76581. 1.758 0.307 0.00 16132. 5.89 5.89 78199. 1.795 0.314 0.00 16238. 5.99 5.99 79828. 1.833 0.320 0.00 16345. 6.00 6.00 79992. 1.836 0.321 0.00 16356. 6.10 6.10 81633. 1.874 0.635 0.00 16463. 6.20 6.20 83285. 1.912 1.200 0.00 16571. 6.30 6.30 84947. 1.950 1.940 0.00 16679. 6.40 6.40 86621. 1.989 2.740 0.00 16787. 6.50 6.50 88305. 2.027 3.030 0.00 16896. 6.60 6.60 90000. 2.066 3.290 0.00 17005. 6.70 6.70 91706. 2.105 3.530 0.00 17114. 6.80 6.80 93423. 2.145 3.750 0.00 17224. 6.90 6.90 95150. 2.184 3.960 0.00 17334. 7.00 7.00 96889. 2.224 4.160 0.00 17444. 7.10 7.10 98639. 2.264 4.350 0.00 17555. 7.20 7.20 100400. 2.305 4.530 0.00 17665. 7.30 7.30 102172. 2.346 4.710 0.00 17777. 7.40 7.40 103956. 2.386 4.870 0.00 17888. 7.50 7.50 105750. 2.428 5.040 0.00 18000. 7.60 7.60 107556. 2.469 5.190 0.00 18112. 7.70 7.70 109372. 2.511 5.350 0.00 18225. 7.80 7.80 111201. 2.553 5.490 0.00 18337. 7.90 7.90 113040. 2.595 5.640 0.00 18451. 8.00 8.00 114891. 2.638 5.780 0.00 18564. Hyd Inflow Outflow Peak Storage Target Calc Stage Elev (Cu-Ft) (AC-Ft) 1 2.58 1.47 6.24 6.24 83886. 1.926 i 2 1.27 0.45 0.43 6.03 6.03 80548. 1.849 3 1.27 0.27 5.34 5.34 69403. 1.593 4 1.53 0.28 5.38 5.38 70094. 1.609 5 1.34 0.20 4.57 4.57 57648. 1.323 6 0.80 0.10 4.01 4.01 49491. 1.136 7 1.03 0.10 3.44 3.44 41565. 0.954 8 1.10 0.08 2.55 2.55 29738. 0.683 i © 2010 D. R. STRONG Consulting Engineers Inc 21 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington I Route Time Series through Facility Inflow Time Series File:dev.tsf Outflow Time Series File:rdout Inflow/Outflow Analysis Peak Inflow Discharge: 2.58 CFS at 6:00 on Jan 9 in Year 8 Peak Outflow Discharge: 1.47 CFS at 10:00 on Jan 9 in Year 8 Peak Reservoir Stage: 6.24 Ft Peak Reservoir Elev: 6.24 Ft Peak Reservoir Storage: 83886. Cu-Ft 1.926 Ac-Ft Flow Duration from Time Series File:rdout.tsf Cutoff Count Frequency CDF Exceedence-Probability US % % % 0.007 32436 52.896 52.896 47.104 0.471E+00 0.020 7033 11.469 64.366 35.634 0.356E+00 - 0.034 6121 9.982 14.348 25.652 0.257E+00 0.047 4968 8.102 82.449 17.551 0.176E+00 0.060 4808 7.841 90.290 9.710 0.971E-01 0.074 2305 3.759 94.049 5.951 0.595E-01 0.087 1687 2.751 96.800 3.200 0.320E-01 0.100 1279 2.086 98.886 1.114 0.111E-01 - 0.114 379 0.618 99.504 0.496 0.496E-02 0.127 21 0.034 99.538 0.462 0.462E-02 0.141 20 0.033 99.571 0.429 0.429E-02 0.154 10 0.016 99.587 0.413 0.413E-02 0.167 .18 0.029 99.617 0.383 0.383E-02 0.181 28 0.046 99.662 0.338 0.338E-02 0.194 43 0.070 99.733 0.267 0.267E-02 0.207 28 0.046 99.778 0.222 0.222E-02 0.221 21 0.034 99.812 0.188 0.188E-02 0.234 17 0.028 99.840 0.160 0.160E-02 0.248 14 0.023 99.863 0.137 0.137E-02 0.261 18 .0.029 99.892 0.108 0.108E-02 0.274 23 0.038 99.930 0.070 0.701E-03 0.288 11 0.018 99.948 0.052 0.522E-03 0.301 16 0.026 99.974 0.026 0.261E-03 0.314 7 0.011 99.985 0.015 0.147E-03 j 0.328 5 0.008 99.993 0.007 0.652E-04 0.341 0 0.000 99.993 0.007 0.652E-04 0.355 0 0.000 99.993 0.007 0.652E-04 0.368 2 0.003 99.997 0.003 0.326E-04 0.381 0 0.000 99.997 0.003 0.326E-04 0.395 0 0.000 99.997 0.003 0.326E-04 0.408 0 0.000 99.997 0.003 0.326E-04 0.421 0 0.000 99.997 0.003 0.326E-04 0.435 1 0.002 99.998 0.002 0.163E-04 0.448 0 0.000 99.998 0.002 0.163E-04 © 2010 D- R. STRONG Consulting Engineers Inc 22 Preliminary Plat of Wyncresl Preliminary Storm Report Auburn, Washington 0.462 0 0.000 99.998 0.002 0.163E-04 0.475 0 0.000 99.998 0.002 0.163E-04 Duration Comparison Anaylsis Base File: predev.tsf New File: rdout.tsf Cutoff Units: Discharge in CFS -----Fraction of Time----- ---------Check of Tolerance------- Cutoff Base New %Change Probability Base New %Change 0.105 0.83E-02 0.71E-02 -14.5 0.83E-02 0.105 0.103 -1.4 0.131 0.60E-02 0.45E-02 -25.4 0.60E-02 0.131 0.106 -19.4 0.158 t 0.46E-02 0.40E-02 -12.4 0.46E-02 0.158 0.127 -19.6 0.185 0.35E-02 0.32E-02 -7.9 0.35E-02 0.185 0.178 -3.8 0.211 0.26E-02 0.21E-02 -18.6 0.26E-02 0.211 0.196 -7.2 0.238 0.20E-02 0.15E-02 -23.4 1 0.20E-02 0.238 0.215 -9.8 0.264 0.13E-02 0.98E-03 -26.8 0.13E-02 0.264 0.249. -6.0 0.291 0.96E-03 0.46E-03 -52.5 0.96E-03 0.291 0.265 -9.0 0.318 0.57E-03 0.98E-04 -82.9 0.57E-03 0.318 0.284 -10.7 0.344 0.33E-03 0.65E-04 -80.0 0.33E-03 0.344 0.298 -13.3 0.371 0.20E-03 0.33E-04 -83.3 0.20E-03 0.371 0.308 -16.8 0.397 0.13E-03 0.33E-04 -75.0 0.13E-03 0.397 0.315 -20.7 0.424 0.65E-04 0.33E-04 -50.0 0.65E-04 0.424 0.358 -15.7 0.451 0.16E-04 0.16E-04 0.0 0.16E-04 0.451 0.476 5.5 Maximum positive excursion = 0.035 cfs ( 7.9%) occurring at 0.441 cfs on the Base Data:predev.tsf - and at 0.476 cfs on the New Data:rdout.tsf Maximum negative excursion = 0.038 cfs (-25.5%) occurring at 0.150 cfs on the Base Data:predev.tsf and at 0.112 cfs. on the New Data:rdout.tsf Water Quality Volume Design KING COUNTY DEPARTMENT OF PUBLIC WORKS Surface Water Management Division HYDROGRAPH PROGRAMS Version 4.218 1 - INFO ON THIS PROGRAM 2 - SBUHYD j 3 - MODIFIED SBUHYD 4 - ROUTE 5 - ROUTE2 6 - ADDHYD 7 - BASEFLOW 8 - PLOTHYD 9 - DATA 10 - RDFAC 11 - RETURN TO DOS i i © 2010 D. R. STRONG Consulting Engineers Inc 23 Preliminary Plat of Wyncresl Preliminary Storm Report Auburn, Washington f ENTER OPTION: 2 SBUHJSCS METHOD FOR COMPUTING RUNOFF HYDROGRAPH STORM OPTIONS: 1 - S.C.S. TYPE-1A 2 - 7-DAY DESIGN STORM 3 - STORM DATA FILE SPECIFY STORM OPTION: 1 S.C.S. TYPE-1A RAINFALL DISTRIBUTION ENTER: FREQ(YEAR), DURATION(HOUR), PRECIP(INCHES) 2242 S.C.S. TYPE-1A DISTRIBUTION 2-YEAR 24-HOUR STORM 2.00" TOTAL PRECIP. ENTER: A(PERV), CN(PERV), A(IMPERV), CN(IMPERV), TC FOR BASIN NO. 1 2.761 86 4.223 98 15.7 DATA PRINT-OUT: AREA(ACRES) PERVIOUS IMPERVIOUS TC(MINUTES) A CN A CN 7.0 2.8 86.0 4.2 98.0 15.7 PEAK-Q(CFS) T-PEAK(HRS) VOL(CU-FT) 2.21 7.83 35632 ENTER [d:][path]filename[.ext] FOR STORAGE OF COMPUTED HYDROGRAPH: Water Quality required Volume is 0.64 * 35,632 = 22,805 C.f. i I f © 2010 D. R. STRONG Consulting Engineers Inc 24 Preliminary Plat of Wyncrest Preliminary Storm Report Auburn, Washington i, F f Storage Volume Provided: Stage EI. Surface Area (s.f.) Stage Volume (c.f.) 280 17863 278 15418 33281 276 13071 28489 274 10837 23908 Total Detention Volume Provided 85678 274 6897 272 4917 11814 270 3280 8197 269 2570 3743.5 Total W.Q. Volume Provided 23754.5 . P I I © 2010 D. R. STRONG Consulting Engineers Inc 25 Preliminary Plat of Wyncrest F Preliminary Storm Report Auburn, Washington s 8 Exhibit 11, Number of Pages 91 A 1° E L CRITICAL AREAS FREPORT WETLANDS, STREAMS9 A WILDLIFE HABITAT'S WYNCREST RESIDENTIAL COMMUNITY CITY( OF AUBURN, WASHINGTON prepared for Schneider Homes, Inc. @ Dlr. Harry Schneider 6510 Southcenter Blvd. Suite #1 Tukwila, Washington 98188 prepared by HABITAT TECHNOLOGIES P.O.. Box 1088 Puyallup, Washington 98371-1088 253-845-5119 December 7, 2010 wetlands, streams, fis=heries, wildlife - mitigation and permitting solutions P.O. Box 1088, Puyallup, Washington 98371 voice 253-845-5119 fax 253-841-1942 habitattech@gwestoffice.net Table of Contents INTRODUCTION ..................................................................................................1 STUDY PURPOSE ......................................................................................................................1 PROJECT SITE DESCRIPTION ..................................................................................................1 BACKGROUND INFORMATION ....................................................................................................2 NATIONAL WETLAND INVENTORY 2 STATE OF WASHINGTON PRIORITY HABITATS AND SPECIES ............................................2 STATE OF WASHINGTON STREAM CATALOG ........................................................................2 CITY OF AUBURN INVENTORY MAPPING 3 SOILS MAPPING 3 WASHINGTON STATE NATURAL HERITAGE PROGRAM .......................................................3 ONSITE ANALYSIS .........................................................................................................................4 CRITERIA FOR WETLAND, STREAM, AND HABITAT IDENTIFICATION .................................4 STUDY METHODS .......................................................................................................................4 FIELD OBSERVATION ................................................................................................................5 WETLAND, STREAM, AND HABITAT DETERMINATION ............................................................8 WETLAND FUNCTION AND VALUE ASSESSMENT .................................................................10 ONSITE WETLAND VALUATION ........................................:.....................................................11 WILDLIFE OBSERVATIONS ........................................................................................................12 WILDLIFE STUDY METHODS ..................................................................................................12 MOVEMENT CORRIDORS .......................................................................................................13 STATE PRIORITY SPECIES .....................................................................................................13 FEDERALLY LISTED SPECIES ................................................................................................14 REGULATORY CONSIDERATION ...............................................................................................14 U.S. ARMY CORPS OF ENGINEERS - SECTION 404 ................................................................14 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY .....................................................15 STATE OF WASHINGTON DEPARTMENT OF FISH AND WILDLIFE .....................................15 CITY OF AUBURN CRITICAL AREAS ORDINANCE - CHAPTER 16.10 .................................15 Wetland Categories (16.10.080) ...........................................................................................16 Stream Classes (16.10.080) ..................................................................................................17 Buffer Areas (16.10.090) .......................................................................................................18 SELECTED DEVELOPMENT ACTION .........................................................................................22 STANDARD OF CARE ..................................................................................................................23 FIGURES .......................................................................................................................................24 REFERENCE LIST ...............................................................25 APPENDIX A - FIELD DATA FORMS ..........................................................................................26 APPENDIX B - WETLAND RATING FORMS ..............................................................................27 ATTACHMENT A - SITE SURVEY ...............................................................................................28 INTRODUCTION This report details the culmination of activities and onsite evaluations undertaken to complete a critical areas assessment of wetlands, streams, and wildlife habitats as an element of the planning of the Wyncrest Residential Community project site (parcels 02210490052, 0221049214, 0221049216, and 0221049054) located generally to the east of 64th Avenue South within the City of Auburn, King County, Washington (part of Section 2, Township 21 North, Range 4 East, W.M.) (Figure 1). The evaluation and delineation of onsite and adjacent wetlands, streams, and wildlife habitats is a vital element in the planning and selection of a site development action. The goal of this approach is to ensure that planned site development does not result in adverse environmental impacts to these critical areas. STUDY PURPOSE This purpose of this document is to present the results of an onsite assessment and evaluation of critical areas (i.e. wetlands, streams, and wildlife habitats) within and immediately adjacent to the project site. Wetland areas were assessed following the methods and procedures defined in the Corps of Engineers Wetland Delineation Manual (1987 Manual), the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (2009 Supplement); the Washington State Wetlands Identification and Delineation Manual (Wash Manual), and the City of Auburn Critical Areas Ordinance (Chapter 16.10). Drainage corridors and wildlife habitats were -also assessed and identified in accordance with the criteria established by the City of Auburn and the State of Washington Department of Natural Resources (WDNR) Forest Practice Rules (WAC 222-16-030). This study was designed to accommodate site planning and potential regulatory actions. This report is suitable for submittal to federal, state, and local authorities for wetland boundary verification and permitting actions. PROJECT SITE DESCRIPTION The project site was located within a quickly urbanizing area in the northeastern portion of the City of Auburn - generally converting existing single-family homesites on large lots into higher density residential subdivisions. The project site included four (4) individual lots and had undergone prior land use manipulations. These manipulations have included the development of adjacent single-family homesites and associated outbuildings, the creation of internal private and external public roadways, forest harvest, clearing and grading, ditching, culvert installation, pasture development and management, and livestock grazing. The project site was dominated by a once managed pasture plant community that had gone fallow and included dense thickets of invasive shrubs. A seasonal drainage corridor entered the project site along the west-central boundary and continued offsite 1 10083 near the northwestern corner of the project site. This seasonal drainage corridor originated at the outfall of a stormwater pond associated with an offsite residential community well offsite to the west. The southeastern boundary of the project site was formed by the fairly steep hillslope associated with the Lower Green River Valley. BACKGROUND INFORMATION NATIONAL WETLAND INVENTORY The National Wetland Inventory (NWI) mapping completed by the U.S. Fish and Wildlife Service was reviewed as a part of this assessment. This mapping resource did not identify any wetlands or drainage corridors within or adjacent to the project site (Figure 2). STATE OF WASHINGTON PRIORITY HABITATS AND SPECIES The State of Washington Priority Habitats and Species (PHS) mapping was reviewed as a part of this assessment. This mapping resource did not identify any priority habitats or species within or adjacent to the project site (Figure 3). This mapping resource did identify areas of urban natural open space generally to the north and southeast of the project site associated with the forested areas of the hillslope of the Lower Green River Valley. STATE OF WASHINGTON STREAM CATALOG The State of Washington Department of Fish and Wildlife (WDFW) Stream Catalog was reviewed as a part of this assessment. This mapping resource identified an unnamed stream offsite to the north of the northwestern corner of the project site. This mapping resource identified a potential presence of coho salmon (Oncorhynchus kisufch) within the lower reached of this unnamed stream. This mapping resource also identified this unnamed stream as a tributary to Mill Creek, and eventually the Green River. Mill creek has been documented to provide habitat for salmonid species (Figure 4). STATE OF WASHINGTON DEPARTMENT OF NATURAL RESOURCES The State of Washington Department of. Natural Resources (WDNR) water type mapping was reviewed as a part of this assessment. This mapping resource identified an unnamed stream offsite to the north of the northwestern corner of the project site. This mapping resource identified this unnamed stream as a Type N Water (non- fishbearing) (Figure 5). 2 10083 CITY OF AUBURN INVENTORY MAPPING The City of Auburn Inventory Mapping was reviewed as a part of this assessment. This mapping resource did not identify any wetlands or stream within or immediately adjacent to the project site (Figure 6). SOILS MAPPING Soils mapping completed by the Soils Conservation Service was reviewed as a part of this assessment. This mapping resource identified that the majority of the project site was dominated by Alderwood gravelly sandy loam soil (AgC and AgB). The Alderwood soil series is defined as formed in glacial deposits and is noted as moderately well drained. The status of the Alderwood soil series has recently been changed from "non- hydric" to "hydric" as a part of the 2009 Supplement. This mapping resource also identified that the very southeastern portion of the project site was dominated by the very steep Alderwood and Kitsap soils association (AkF). This soil association is approximately 50% Alderwood gravelly sandy loam and 25% Kitsap silt loam with the remainder made up of various soils (Figure 7). The soil series is not listed as "hydric." WASHINGTON STATE NATURAL HERITAGE PROGRAM The Washington State Natural Heritage Program was reviewed as a part of this assessment. This mapping resource failed to identify any high quality undisturbed wetland or any wetlands that supports Washington State Listed Threatened, Endangered, or Sensitive species within the Section/Township/Range of the project site. PRIOR SITE ASSESSMENT During 2004 and 2005 Habitat Technologies completed a critical areas assessment of a number of parcels that included the four parcels identified within this document. This prior assessment included the preparation of a critical areas report that was submitted to King County for review. As a part of project review King County Environmental Staff verified the character, delineated boundary, and regulatory category of each identified wetland. Following the 2005 King County verification of the critical areas assessment the proposed residential community development was cancelled. Since 2005 the project site has been annexed into the City of Auburn. 3 110083 ONSITE ANALYSIS CRITERIA FOR WETLAND, STREAM, AND HABITAT IDENTIFICATION Wetlands are transitional areas between aquatic and upland habitats. In general terms, wetlands are lands where the extent and duration of saturation with water is the primary factor determining the nature of soil development and the types of plant and animal communities living in the soil and on its surface (Cowardin, et al., 1979). Wetlands are generally defined within land use regulations as "areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions" (1987 Manual). Wetlands exhibit three essential characteristics, all of which must be present for an area to meet the established criteria within the Wash. Manual and the 1987 Manual. These essential characteristics are: 1. Hydrophytic Vegetation: A predominance of plants that are typically adapted for life in saturated soils. 2. Hydric Soil: A soil that is saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions in the upper horizons. 3. Wetland Hydrology: Permanent or periodic inundation, or soil saturation to the surface, at least seasonally. A "streams" is defined as those areas where surface waters produce a defined channel or bed that demonstrates clear evidence of the passage of water and includes, but is not limited to, bedrock channels, gravel beds, sand and silt beds and defined-channel swales. The channel or bed need not contain water year-round. This definition is not intended to include artificially created irrigation ditches, canals, storm or surface water devices, or other entirely artificial watercourses unless they are used by salmonids or created for the purposes of stream mitigation. As defined by the City of Auburn "critical habitat" or "critical wildlife habitat" are those habitat areas associated with threatened, endangered, or sensitive species of plants or wildlife (pursuant to WAC 232-12-297(2.4), (2.5) and (2.6)) and which, if altered, could reduce the likelihood that the species will maintain and reproduce over the long term. STUDY METHODS Habitat Technologies completed a series of site assessments between October 2010 and early December 2010. The objective of these site assessments was to define, delineate, and characterize potential wetlands and streams which may be present within or adjacent to the project site.. Boundaries between wetland and non-wetland areas 4 10083 were established by examining the transitional gradient between wetland criteria along a number of east to west transects through the project site. Onsite activities were completed in accordance with criteria and procedures established in the 1987 Manual, the 2009 Supplement, the Wash. Manual, the City of Auburn Critical Areas Ordinance, and the WDNR Forest Practice Rules. Delineation was performed using the routine methodology for areas larger than five acres as detailed in the 1987 Manual and the Wash. Manual. Field data sheets are provided in Appendix A and sample plot locations are identified on Attachment A. The 2010 assessment was also able to utilize the information generated and associated boundary surveying initially prepared in 2004/2005 and subsequently verified by King County Environmental Staff. The, project team was able to re-stake wetland boundaries and associated data plot locations as defined in 200412005 to allow for an assessment of potential changes in wetland and drainage corridor areas between 2005 and 2010. FIELD OBSERVATION The project site was accessed via public roadways along the western boundary of the project site - 64th Avenue South. The project site was located within a quickly urbanizing area of the City of Auburn - generally converting existing single-family homesites on large lots into higher density residential subdivisions. The project site included four individual lots and had undergone prior land use manipulations. Soils As documented by sample plots the majority of the project site was dominated by soil that exhibited a gravelly sandy loam to sandy loam texture and coloration typical of the Alderwood soil series. The surface soil was dark brown to brown (10YR 312 to 10YR 3/3) and the subsoil was brown to light brown (10YR 313 to 10YR 4/3). In addition, the subsoil did not exhibit prominent redoximorphic features (i.e. soil mottles) and oxidized root channels. The soil within the majority of the project site exhibited field characteristics typical of upland soil. In addition, in many areas the upland soil had been modified by prior pasture management actions. A narrow, seasonal drainage corridor entered the project site from the west and passed generally northward to exit the site near the northwestern corner. Onsite, this seasonal drainage corridor had been excavated to created a field drainage ditch. Within the low lying area immediately adjacent to the excavated drainage surface soil coloration ranged from black to very dark gray (10YR 211 to 10YR 311). The subsoil between approximately 10 and 24 inches was generally gray (10YR 4/1 to 10YR 512) and exhibited prominent redoximorphic features (i.e. soil mottles, soil depletions, and soil concentrations) and oxidized root channels. A small depression was also identified within the southwestern corner of the project site. The soil within this isolated depression also exhibited coloration that ranged from black to very dark gray to brown (10YR 2/1 to 10YR 3/1). The subsoil was also generally gray 5 10083 (10YR 4/1 to 10YR 5/2) and exhibited prominent redoximorphic features (i.e. soil mottles, soil depletions, and soil concentrations) and oxidized root channels. The soil within this area had also been modified by prior livestock utilization and other land use modifications. Hydrology Surface water hydrology patterns throughout the project site had been greatly manipulated by offsite and onsite urbanization. In general, the project site sloped from the east and west towards a topographic swale running generally from south to north. Onsite seasonal stormwater runoff from the project site was generally directed by topography into this shallow swale. The very southeastern corner of the project site sloped moderately steeply to the southeast. The development of the areas to the west of the project site had created a ditched, seasonal drainage that entered the project site at the west-central boundary and then turned northward to exit the site at the northwestern corner of the project site. This seasonal drainage had been greatly modified and originated from a created stormwater pond associated with a residential community along South 300th Street well west of the project site. This seasonal drainage also conveyed seasonal surface water runoff from the parcels to the south of South 300th Street which included managed pastures, single family homesites, a managed utility corridor, and vacant areas. This seasonal drainage passed northward under South 300th Street to the west of the project site and was conveyed within a ditch formed along the property boundary of residential homesites. The ditch then entered the project site via a culvert under 64th Avenue South directly north of South 299th Street. Onsite, this drainage was ditched to the east and then to the north eventually back into what appeared to be the pre-development contour of the project area. This drainage continued offsite to the north and then crossed 65th Avenue South via a culvert. The culvert under 65th Avenue South was grated and included an adjacent overflow culvert inlet. Downstream to the north of 65th Avenue South the drainage was confined within a narrow ravine that exceeded a 16% gradient. Onsite, this ditched drainage was confined within * a narrow channel. A shallow depressional area (noted as Wetland C below) located generally along the southern and eastern edge of this channel exhibited seasonal surface soil saturation associated with seasonal flow in the ditch. This area has been observed to become dry by the late spring/early summer. A shallow depression (noted as Wetland B below) was identified in the fallow pasture area in the southwestern corner of the project site. Seasonal surface water runoff from the areas to the south and southeast of this shallow depression appeared to provide hydrology for this depression. As observed during the 2004/2005 assessment a field ditch had been created that originated within a parcel to the south and then continued to the north eventually entering the area identified as Wetland C. This field ditch began at a created ornamental duck pond with ponding and outflow supported by pumped groundwater. 6 10083 Vegetation The project site was dominated by a now fallow plant community typically associated with once managed livestock pasture. The majority of the project site exhibited dense thickets of blackberries (Rubus procera and Rubus laciniatus) intermixed with dense stands of Scots broom (Cytisus scoparius). This plant community also included a wide variety of grasses and herbs along with a scattering of sapling trees. Observed species included crabapple (Pyrus fusca), big leaf maple (Acer macrophyllum), ornamental maple (Acer spp.), hawthorne (Crataegus monogyna), red alder (Alnus rubra), Indian plum (Oemleria cerasiformis), cascara (Rhamnus purshiana), rose (Rosa gymnocarpa), Pacific red elderberry (Sambucus racemosa), holly (flex spp.), quackgrass (Agropyron spp.), bentgrass (Agrostis alba and Agrostis alba), vernal grass (Anthoxanthum odoratum), orchardgrass (Dactylis glomerata), fescue (Festuca spp.), velvetgrass (Holcus lanatus), bluegrass (Poa spp.), bracken fern (Pteridium aquilium), western yarrow (Achillea lanulosa), daisy (Bellis spp.), Canadian thistle (Cirsium arvensis), bull thistle (Cirsium vulgare), bedstraw (Galium spp.), teasel (Dipsacus sylvertris), dandelion (Taraxacum officinale), buttercup (Ranunculus repens), Queen Ann's lace (Daucus carota), and clover (Trifolium spp.). This plant community was identified as non- hydrophytic in character (i.e. typical of uplands). A mixed forest plant community was present along the hillslope of the Lower Green River Valley in the southeastern corner of the project site. Tree species observed within this forest community included mature Douglas fir (Pseudotsuga menziesir), Western red cedar (Thuja plicata), big leaf maple, red alder, cherry (Prunus spp.), black cottonwood (Populus trichocarpa), and Western hemlock (Tsuga heterophylla). The understory included a wide variety of sapling trees, shrubs, and herbs. Observed understory species included Himalayan blackberry (Rubus procera),. evergreen blackberry (Rubus laciniatus), Scot's broom, rose, Indian plum, Oceanspray (Holodiscus discolor), vine maple (Acer circinatum), hazelnut (Corylus comuta), Oregon grape (Berberis nervosa and Berberis aquifolium), snowberry (Symphoricarpus afbus), salal (Gaultheria shallon), and sword fern (Polystichum munitum). This plant community was identified as non-hydrophytic in character (i.e. typical of uplands). The plant community in the shallow depression noted at the southwestern corner of the project site (Wetland B outlined below) exhibited a predominance of grasses and herbs more typically associated with seasonally saturated soil conditions. Observed species included reed canarygrass (Phalaris arundinacea), water foxtail (Alopecurus geniculatus), meadow foxtail (Alopecurus pratensis), softrush (Juncos effusus), buttercup, curled dock (Rumex crispus), and speedwell (Veronica spp.). In addition, this plant community also included a scattering' of sapling Oregon ash (Fraxinus latifolia) and sapling red alder. This plant community was identified as hydrophytic in character (i.e. typical of wetlands). The plant community associated with the edge of the seasonal drainage within the northwestern portion of the project site was dominated by reed canarygrass (Phalaris 7 10083 arundinacea). A number of red alder trees were also located along the edge of the excavated drainage ditch which provided aerial coverage. This plant community was identified as hydrophytic in character (i.e. typical of wetlands). WETLAND, STREAM, AND HABITAT DETERMINATION Wetland determination was based on sample plots which contained hydrophytic vegetation, hydric soils, and wetland hydrology in accordance with the 1987 Manual and the Wash. Manual. Based on these methods two (2) areas within the project site were identified to exhibit all three of the established wetland criteria. In addition, a seasonal drainage through Wetland C was further identified to meet the criteria for designation as a stream. As noted during the 2010 assessment site conditions had changed very little since the 2004/2005 assessment and the project site was not identified to provide "critical," "secondary," or "tertiary" habitats. WETLAND SIZE CLASSIFICATION CITY OF WDOE FUNCTION STANDARD (onsite & (USFWS) AUBURN RATING AND BUFFER offsite) CATEGORY SCORE VALUE WIDTH RATING B 5,983s ft PEMEd 3 36 LOW 25ft C 7,118s ft PFOEd 3 33 LOW 25ft Wetland B: Wetland B was located within a shallow depression in the southwestern portion of the project site. This wetland was managed at one time as livestock pasture, but appeared to have gone fallow over the past years. The upland areas adjacent to Wetland B were dominated by blackberries and Scot's broom. Hydrology for Wetland B appeared provide by seasonal surface water runoff from the adjacent upland areas. Wetland B did not exhibit seasonal ponding, appeared drained in part by the adjacent excavated field ditch, and appeared to become dry by early summer. Wetland B was located along an excavated field ditch that conveyed seasonal surface water originating from an ornamental duck pond offsite to the south. This excavated field ditch directed seasonal runoff to the edge of Wetland C via buried culverts. Wetland B met the U.S. Fish and Wildlife Service (USFWS) criteria for classification as palustrine, emergent, seasonally flooded/saturated, ditched (PEMEd). Wetland B was identified as a depressional-slope wetland and received a Total Functions Score of 36 utilizing the Washington State Department of Ecology Wetland Rating Form for Western Washington (Appendix B).. Wetland B was identified to meet the criteria for designation as a City of Auburn Category 3 Wetland. Wetland C: Wetland C was located within a narrow above ordinary high water mark floodplain that followed the intermittent stream corridor in the northwestern portion of the project site. This wetland was managed at one time as pasture, but appeared to have gone fallow over the past few years. The upland areas adjacent to Wetland C were 8 10083 dominated by dense thickets of blackberries and Scot's broom. The majority of Wetland C was associated with a forested overstory composed of red alder rooted along the edge of the intermitted stream. Hydrology for Wetland C appeared provide by seasonal surface water within the -intermittent stream, from seasonal runoff from adjacent uplands, and from the ditch originating from Wetland B. . Wetland C. met the U.S. Fish and Wildlife Service (USFWS) criteria for classification as palustrine, forested, seasonally flooded/saturated, ditched (PFOEd). Wetland B was defined as a depressional - slope wetland and received a Total Functions Score of 33 utilizing the Washington State Department of Ecology Wetland Rating Form for Western Washington (Appendix B). Wetland B was identified to meet the criteria for designation as a City of Auburn Category 3 Wetland. STREAM CLASSIFICATION CITY OF AUBURN STANDARD BUFFER USFWS CLASS WIDTH A PFOEd Class 4 Stream 25ft - Field dutch - non-regulated Onsite Stream: A seasonal surface water drainage (Stream A) was identified to originate at the outflow of a stormwater facility offsite to the west and to receive seasonal surface water runoff from developed homesites, public roadways, and managed pastures to the west of the project site. Stream A was ditched both onsite and offsite and had been crossed with a number culverts offsite. Stream A exhibited an intermittent drainage pattern and channel gradient directly offsite to the north (north of 65th Avenue South) exceeded 16%. In addition, the culvert under 65th Avenue South formed a complete passage barrier to the upstream movement of fish. Stream A had been previously identified by King County as a Category N Stream during the 2004/2005 assessment. As defined during the 2010 assessment, this classification appeared correct. Stream A does not provide suitable fish habitats and is upstream of a natural barrier formed by stream gradient. As such, Stream A would best be defined as a City of Auburn Class 4 Stream. Onsite Field Ditch: An excavated field ditch was identified to originate from an ornamental duck pond located offsite to the south and then to continue through the site to the north to enter Wetland C. This field ditch appeared best defined as a City of Auburn intentionally created stream. This field ditch does not appear to convey a natural stream channel that was present prior to the excavation of the ditch and the ditch does not provide direct habitats for fish .species. The City has defined three classifications of "habitat areas." As defined by onsite assessment the project site did not provide "critical habitats" for species listed by federal or state agencies as endangered, threatened, or sensitive; and the project site did not provide unusual nesting or resting sites, Category 1 Wetlands, or Class 1 Streams. The project site did not provide habitat which is valuable to fish and wildlife and supports a 9 10083 wide variety of species due to its undisturbed nature, a diversity of plant species and structure, presence of water, or the area's size, location, or seasonal importance (i.e. Secondary Habitat). In addition, the project site - while supporting some wildlife and performing other valuable functions - does not currently possess essential characteristics necessary to support diverse wildlife communities (i.e. Tertiary Habitat). WETLAND FUNCTION AND VALUE ASSESSMENT Wetlands are known to perform significant roles in the ecosystem, some of which are of immediate value to society. These roles vary greatly with the size, type, hydrology, vegetation, and location of wetland areas. Although the ecological functions performed by these wetlands are complex, interrelated, and difficult to assess and quantify, methods have been developed for the U.S. Army Corps of Engineers (Adamus et al. 1987: Reppert et .al. 1979). The functions provided by wetlands include hydrologic support, shoreline protection, stormwater and floodwater storage, water quality, groundwater recharge, and provision of wildlife habitat. The HYDROLOGIC SUPPORT FUNCTION is defined by the measure of hydrologic stability and environmental integrity that the wetland provides. This function is measured by the frequency of inundation and saturation by tidal actions, stream flow, runoff, and precipitation. Wetlands permanently inundated or saturated, or intertidal wetlands are valued as high. Medium valued wetlands are seasonally flooded or are open water systems that remain saturated during most of the growing season. Wetlands that are intermittently flooded or hydrologically isolated are considered of low value. The SHORELINE PROTECTION FUNCTION is defined by the measure of shielding from wave action, erosion, or storm damage that a wetland provides. This function is measured by the location and width of the wetland along shoreline areas, types of vegetation present, and the extent of development along the shoreline. A high value is given to wetlands along a shoreline that have a width greater than 200 yards and dense woody vegetation. A medium value is given to a wetland with a width of 100 to 200 yards, sparse woody vegetation, and dense emergent vegetation. Wetlands less than 100 yards in width and emergent or lacking vegetation are considered of low value. The STORMWATER AND FLOODWATER STORAGE FUNCTION is defined by the ability of a wetland to store water and retard flow during periods of flood or storm discharge. Wetlands of larger size are generally considered to have greater ability to provide this function. In addition, wetlands nearer to urban or potentially develop-able areas are also considered to provide greater flood protections than wetlands that are in undeveloped areas. 10 10083 The WATER QUALITY FUNCTION is defined by the physical, biological, and chemical processes which wetlands provide to naturally purify water. This function removes organic and mineral particulates through natural filtration. In general, wetlands of greater size, more dense vegetation, and those that are close to point sources of pollution are considered to be of higher value. Wetlands that are small (<5 acres), lacking dense vegetation, and not close to point or non-point sources of pollution are considered of low value. The GROUNDWATER RECHARGE FUNCTION is defined by the interaction of the underlying geology and soils, and the surface topography. This function provides for the movement of surface water into groundwater systems. Important to this function is wetland size, period of inundation, and depth of standing water within the wetland. High value is given to permanently inundated wetlands greater than 10 acres in size. Medium value is given to wetlands that are seasonally flooded and 5 to 10 acres is size. Wetlands less than 5 acres in size, isolated, and temporarily saturated are considered of low value. The NATURAL BIOLOGICAL FUNCTION is defined by the complexity of physical habitats and biological species within the wetland area. The value given to a wetland depends upon its ability to provide habitat for nesting (spawning), incubation, feeding, rearing, and cover of aquatic and terrestrial animal and fish species. In addition, the ability of a wetland to provide support for varying food chains is an important element in value assessment. Wetlands of high species diversity, three or more habitat types, unique habitat features, large in size, and associated with a permanent stream or tidal marsh is considered of high value. Wetlands with moderate species diversity, two habitat types, moderate in size, and associated with an intermittent stream or high salt marsh are considered of medium value. A low value is given to wetlands of low species diversity, small size, and isolated. These six functions are rated low, moderate, or high, based on the criteria outlined above. These criteria are guidelines compiled from Adamus (1987) and Reppert (1979) and professional judgment must be exercised in assessing these criteria. Overall values for a wetland are assigned, based on a synthesis of individual values. In addition to intrinsic functions, extrinsic functions are also recognized. These extrinsic functions provide social values that have indirect benefits to wetlands. Education and recreational opportunities are most often mentioned as extrinsic functions. Associated values are often in the eye of the beholder and are thus difficult to evaluate. As such, these functions are not rated, but are nonetheless important when considering creation, restoration, or enhancement projects. ONSITE WETLAND VALUATION As identified in this assessment Wetlands B and C were identified to exhibit an overall low value rating. '11 10083 • Water Quality and Hydrologic Support (low) - These wetlands were small and generally dominated by managed pasture plant community. These wetlands retained a limited amount of runoff and exhibited a vegetation density greater than 80%. The primary water quality benefit provided by these wetlands included the biofiltration of a limited amount of surface stormwater from on and offsite areas. • Stormwater Storage and Groundwater Recharge (low) - These wetlands were small and retained a limited amount of stormwater from onsite and offsite. These wetlands did not exhibit ponding and appeared to become dry by early summer. o Natural Biological Function (low) - These wetlands were small and generally dominated by managed pasture plant community. These wetlands did not exhibit unique habitat features. WILDLIFE OBSERVATIONS WILDLIFE STUDY METHODS The onsite assessment of wildlife species presence and available wildlife habitats was completed as a part of the onsite assessment of wetland and stream characteristics and had been completed as a part of the 2004/2005 assessment. This assessment included both early morning and late afternoon observations. Based on the existing plant communities, directly observations, and observations within adjacent parcels avian species that were observed or that would be expected within the project site would include bald eagle (Haliaeetus leucocephalus), red tailed hawk (Buteo jamaicensis), merlin (Falco columbarius), American crow (Corvus brachynchos), rock dove (Columbia livia), mourning dove (Zenaida macroura), Northern flicker (Colaptes auratus), hairy woodpecker (Picoides villosus), tree swallow (Tachycineta bicolor), house sparrow (Passer domesticus), violet green swallow (Tachycineta thallassina), barn swallow (Hirundo rustica), brown creeper (Cedhia familiaris), song sparrow (Melospiza melodia), American robin (Turdus migratorius), dark eyed junco (Junco hyemalis), Steller's jay (Cyanocitta stellen), starling (Stumus vulgaris), black capped chickadee (Parus atricapillus), American goldfinch (Carduelis tristis), rufous sided towhee (Pipilo eryfhrophthalmus), great blue heron (Ardea herodias), red winged blackbird (Agelaius phoenisues), marsh wren (Cistothorus palustirs), Western screech owl (Otus kennicotti), killdeer (Charaddus vociferus), and mallard duck (Anas platyrhynchos). The majority of these avian species would be expected to feed throughout the project site. No large nest suitable for raptors were observed within or adjacent to the project site. Mammal species observed (directly or indirectly) or expected within the project site would include coyote (Canis latrans), black tailed deer (Odocoileus hemionus), raccoon (Procyon lotor), striped skunk (Mephitis mephitis), opossum (Didelphis virginianus), deer 12 10083 mouse (Peromyscus maniculafus), shrew (Sorex spp.), vole (Microfus spp.), Townsend mole (Scapanus fownsendii), bats (Myofis spp.), eastern gray squirrel (Sciurus carolinensis), and eastern cottontail (Sylvilagus floridanus). The project site would also provide limited habitats for Pacific treefrog (Hyla regilla) and common garter snake (Thamnophis sirfalis). The project site does not provide direct habitats for fish species. MOVEMENT CORRIDORS As identified by onsite wildlife trials, small, medium, and large mammals appeared to be moving throughout the project site. However, as a result of prior onsite and offsite urban development the project site does not appear to be a part of a seasonal migration corridor for mammals. The project site is located within the seasonal migration corridor for passerine birds. STATE PRIORITY SPECIES Game Species: Several species identified by the State of Washington as "Priority Species" were observed onsite or potentially may utilize the project site. The majority of these species are identified as "game species" and are regulated by the State of Washington through recreational hunting bag limits, harvest seasons, and harvest area restrictions. These species included black-tailed deer, mourning dove, and common mallard. State Monitored: State Monitored species are native to Washington but require habitat that has limited availability, are indicators of environmental quality, require further assessment, have unresolved taxonomy, may be competing with other species of concern, or have significant popular appeal. A single State Monitored species - great blue heron - may use the habitats both onsite and offsite. This species has also been identified to utilize a communal nesting area located at the lower end of Peasly Canyon to the south of the project site. State Candidate: State Candidate species are presently under review by the State of Washington Department of Fish and Wildlife (WDFW) for possible listing as endangered, threatened, or sensitive. A single State Candidate species - merlin - may utilize the habitats provided by the project site. State Sensitive: State Sensitive species are native to Washington and is vulnerable to declining and is likely to become endangered or threatened throughout a significant portion of its range without cooperative management or removal of threats. No State Sensitive species were observed as a part of this assessment. However, a single State Sensitive species - bald eagle - has been documented to utilize the habitats associated with the Lower Green River Corridor within the vicinity of the project site. 13 10083 State Threatened: State Threatened species means any wildlife species native to the state of Washington that is likely to become an endangered species within the foreseeable future throughout a significant portion of its range within the state without cooperative management or removal of threats. The project site did not provide critical habitats for State Threatened species. State Endangered: State endangered species means any species native to the state of Washington that is seriously threatened with extinction throughout all or a significant portion of its range within the state. The project site did not provide critical habitats for State Endangered species. FEDERALLY LISTED SPECIES A single, federally listed "species of concern" - bald eagle - has been documented to utilize the habitats associated with the Lower Green River Corridor within the vicinity of the project site. No nesting areas were observed onsite or within the adjacent vicinity for this species. REGULATORY CONSIDERATION The proposed alteration of lands defined by various federal, state, and local authority rules and regulations as "wetlands" raises environmental concerns that are generally addressed in the development review process. These concerns center on the development's potential adverse impacts to the structure, function, value, and size of these "wetland" areas. Such adverse impacts may include: a reduction in wildlife habitats, reduced surface water quality, reduced water retention, a reduced ground water recharge rate, reduced plant species diversity, and the reduction in the function and value of other associated wetland and non-wetiand characteristics. U.S. ARMY CORPS OF ENGINEERS - Section 404 Section 404 of the Clean Water Act (33 U.S.C. 1344) prohibits the discharge of dredged or fill material into "Waters of the United States" without a permit from the Corps of Engineers (Corps). The Corps has jurisdiction over freshwater systems waterward from the ordinary high water line of a water body or waterward from the upland boundary of the adjacent wetland. The definition of fill materials includes the replacement of aquatic areas with dry land, grading which changes the surface contour of a wetland, and mechanized land clearing in wetlands. For the purposes of Section 404 permitting the Corps makes the final determination as to whether an area meets the wetland definition and would be subject to regulation under the Corps program. Applications to the Corps for permitting actions must follow the 1987 Manual wetland delineation format. 14 10083 Currently the Corps has two specific types of permits which apply to wetland fill proposals. These two types are a series of specific Nationwide Permits and the Individual Permit. The Nationwide Permit process identifies specific categories of work that can be undertaken following a set of specific conditions applicable to each Nationwide Permit number. All projects that proceed forward using either one of the Nationwide Permits or the Individual Permit process must also comply with the provisions of the Endangered Species Act. As defined by a recent U.S. Supreme Court decisions the Corps of Engineers does not typically regulated "isolated" wetlands pursuant to Section 404 of the Clean Water Act. Under this decision "isolated" wetlands do not exhibit a continuous surface water connection to other, downstream aquatic system. STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Proposed action undertaken through either of the Corps of Engineers processes (Nationwide, Individual, or isolated) are also subject to the provisions of the Washington State Department of Ecology Water Qualify Certification Process. Projects that may be exempt from Corps of Engineers Section 404 jurisdiction may still require review by the Washington State Department of Ecology to ensure consistency with State water quality protection provisions. STATE OF WASHINGTON DEPARTMENT OF FISH AND WILDLIFE Proposed action undertaken waterward of the ordinary high water mark of a stream or identified "water of the state" are also subject to the provisions of the Washington State Department of Fish and Wildlife Hydraulic Project Approval (HPA) Process. Projects that may be exempt from Corps of Engineers Section 404 jurisdiction may still require review by the Washington State Department of Ecology to ensure consistency with State water quality protection provisions. CITY OF AUBURN CRITICAL AREAS ORDINANCE - CHAPTER 16.10 The City of Auburn regulates activities in and around wetland, stream, and habitat areas through Critical Areas Ordinance - Chapter 16.10. The City has identified that these critical -areas perform a variety of valuable and beneficial biological and physical functions that benefit the City and its residents. Alteration of certain critical areas may also pose a threat to public safety or to public and private property or the environment. The City has noted that the identification, regulation and protection of critical areas are necessary to protect the public health, safety and general welfare. 16 10083 i 1 9 1 Wetland Categories (16.10.080) The City has identified that "wetlands" shall be designated Category 1, Category 2, Category 3, Category 4, and as artificially created. Wetland classifications incorporate the Washington State Wetlands Rating System for Western Washington (Department of Ecology, 2004, Publication No. 04-06-025). Wetland rating categories shall be applied as the wetland exists on the date of adoption of the rating system by the local government, as the wetland naturally changes thereafter, or as the wetland changes in accordance with permitted activities. Wetland rating categories shall not change due to illegal modifications. "Category 1 Wetlands" are those wetlands which meet any of the following criteria: a. Represent a unique or rare wetland type; or b. Are more sensitive to disturbance than most wetlands; or c. Are relatively undisturbed and contain ecological attributes that are impossible to replace within a human lifetime; or d. Are providing a high level of functions, scoring 70 points or more out of 100 (DOE Wetlands Rating System, 2004); or e. Are characterized as a national heritage wetland; or f. Are characterized as a bog; or g. Are over one acre and characterized as a mature and old-growth forested wetland. "Category 11 Wetlands" are those wetlands which are not Category 12 wetlands and which meet any of the following criteria:. a. Provide high levels of some functions, being difficult, though not impossible to replace; or b. Perform most functions relatively well, scoring 51 - 69 out of 100 points (DOE Wetlands Rating System, 2004). "Category 3 Wetlands" are those wetlands that are not Category 1 or 2 wetlands, and which meet the following criterion: a. Provide moderate levels of functions, scoring between 30 - 50 out of 100 points (DOE Wetlands Rating System, 2004). "Category 4 Wetlands" are those wetlands that meet the following criterion: a. Provide low levels of functions, scoring less than 30 out of 100 points (DOE Wetlands Rating System, 2004). "Artificially created wetlands" are purposefully created landscape features, ponds and storm water detention or retention facilities. Artificially created wetlands do not include wetlands created as mitigation, and wetlands modified for approved land use activities. Purposeful creation must be demonstrated to the director through documentation, photographs, statements and/or other evidence. 16 10083 Artificial wetlands intentionally created from nonwetland sites are excluded from regulation under this section. Stream Classes (16.10.080) The City has defined that "streams" shall be designated Class 1, Class 2, Class 3, and Class 4 according to the criteria. "Class 1 Streams" are those natural streams identified as "shorelines of the state" under the city of Auburn shoreline master program. "Class 2 Streams" are those natural streams that are not Class I streams and are either perennial or intermittent and have one of the following characteristics: a. Contain fish habitat; or b. Has significant recreational value, as determined by the director. "Class 3 Streams" are those natural streams with perennial (year-round) or intermittent flow and do not contain fish habitat. "Class 4 Streams" are those natural streams and drainage swales with channel width less than two feet taken at the ordinary high water mark, that do not contain fish habitat. "Intentionally created streams" are those manmade streams defined as such in these regulations, and do not include streams created as mitigation. Purposeful creation must be demonstrated through documentation, photographs, statements and/or other evidence. Intentionally created streams may include irrigation and drainage ditches, grass-lined swales and canals. Intentionally created streams are excluded from regulation under this section, except manmade streams that provide "critical habitat," as designated by federal or state agencies, for salmonids. Wildlife Habitat Classification (16.10.080) The City has defined that "habitat areas" shall be classified as critical, secondary or tertiary according to the criteria. "Critical Habitats" are those habitat areas which meet any of the following criteria: a. The documented presence of species or habitat listed by federal or state agencies as "endangered," "threatened," or "sensitive"; or b. The presence of unusual nesting or resting sites such as heron rookeries; c. Category 1 wetlands, as defined in these regulations; or d. Class 1 streams, as defined in these regulations. "Secondary Habitat" is habitat which is valuable to fish and wildlife and supports a wide variety of species due to its undisturbed nature, a diversity of plant 17 10083 species and structure, presence of water, or the area's size, location, or seasonal importance. "Tertiary Habitat" is habitat which is not classified as critical or secondary. It is habitat which, while supporting some wildlife and performing other valuable functions, does not currently possess essential characteristics necessary to support diverse wildlife communities. Tertiary habitat also includes habitat which has been created purposefully by human actions to serve other or multiple purposes, such as open space areas, landscape amenities, and detention facilities. i Buffer Areas (16.10.090) The City has determined that the establishment of onsite buffers, buffer areas, or setbacks shall be required for all development proposals and activities in or adjacent to critical areas. The purpose of the buffer shall be to protect the integrity, function, value, and resources of the subject critical area (in the case of wetlands, streams, and/or wildlife habitat areas), and/or to protect life, property and resources from risks associated with development on unstable or critical lands (in the case of geologic hazard areas). Buffers shall typically consist of an undisturbed area of native vegetation retained or established to achieve the purpose of the buffer. No buildings or structures shall be allowed within the buffer unless as otherwise permitted by this section. If the site has previously been disturbed, the buffer area shall be revegetated pursuant to an approved enhancement plan. Buffers shall be protected during construction by placement of a temporary barricade, notice of the presence of the critical area and implementation of appropriate erosion and sedimentation controls. Restrictive covenants or conservation easements may be required to provide long-term preservation and protection of buffer areas. Required buffer widths shall reflect the sensitivity of the particular critical area and resource or the risks associated with development and, in those circumstances permitted by these regulations, the type and intensity of human activity proposed to be conducted on or near the critical area. Wetland buffers shall be measured perpendicular from the wetland edge as delineated and marked in the field using the 1997 Washington State Wetlands Identification and Delineation Manual. Stream buffers shall be measured from the ordinary high water mark. A Buffer Variance from buffer width requirements may be granted by the city subject to the variance criteria set forth in ACC 16.10.160. Minor variances, defined as up to and including 10% of the requirement, shall be considered by the director. Variance requests which exceed 10% shall be considered by the hearing examiner. 18 10083 CRITICAL AREA MINIMUM BUFFER WIDTH MAXIMUM BUFFER WIDTH Category 1 Wetland 100 feet 200 feet Category 2 Wetland 50 feet 100 feet Category 3 Wetland 25 feet 50 feet Category 4 Wetland 25 feet 30 feet Class 1 Stream 100 feet Class 2 Stream 75 feet Class 3 Stream 25 feet Class 4 Stream 25 feet Buffer width averaging may be allowed where the applicant demonstrates to the director that the wetland contains variations in sensitivity due to existing physical characteristics, that lower intensity land uses would be located adjacent to areas where buffer width is reduced, that width averaging will not adversely impact the wetland functional values and/or that the total area contained within the buffer after averaging is no less in area than contained within the standard buffer prior to averaging. Buffer width averaging may be allowed only where such reduction shall not result in greater than a 35% reduction in the buffer width established in this section and the applicant demonstrates the following: L The proposed buffer area is extensively vegetated and has less than 25% slopes, and the reduction will not result in adverse impacts to the wetland; or ii. The project includes a buffer enhancement plan, as part of the mitigation required by this chapter and has less than 25% slopes. The buffer enhancement plan shall use plant species which are native to the project area, and shall substantiate that an enhanced buffer will improve the functional attributes of the buffer to provide additional protection for wetland functional values; or iii. The acreage included in the buffer would substantially exceed the size of the wetland and the reduction will not result in adverse impacts to the wetland and the project includes a buffer enhancement plan which ensures that the reduction will not result in adverse impacts to the wetland. Wetland Buffer Width may be reduced by up to 35% if an applicant undertakes measures approved by the director to enhance or restore the buffer. The restoration or enhancement may include, but is not limited to, planting of native trees or shrubs, increasing the diversity of plant cover types or replacement of exotic species with native species which approximate in composition a naturally occurring plant community. Application of subsections (E)(1)(a) and (b) of this section shall not result in a buffer width less than 25 feet. 19 10083 Certain uses and activities which are consistent with the purpose and function of the wetland buffer and do not detract from its integrity may be permitted by the director within the buffer depending on the sensitivity of the wetland. Examples of uses and activities with minimal impacts which may be permitted in appropriate cases include permeable pedestrian trails, viewing platforms, and utility easements; provided, that any impacts to the buffer resulting from such permitted activities shall be mitigated. Uses permitted within the buffer shall generally be located as far from the wetland as possible. Where existing buffers are degraded, the director may allow limited filling within the buffer when the applicant demonstrates that the buffer will be enhanced according to standards of this chapter, including appropriate soil preparation, will not result in slopes exceeding 25%, and there will be no net loss of wetland or buffer functions and values. Long-term protection of a regulated wetland and its associated buffer shall be provided by one of the following methods. It shall be placed in a separate tract on which development is prohibited, protected by execution of an easement dedicated to the city, a conservation organization or land trust, or similarly preserved through a permanent protective mechanism acceptable to the city. The location and limitations associated with the wetland and its buffer shall be shown on the face of the deed or plat applicable to the property and shall be recorded with the King County recording department. The director may require increased buffer widths up to the amount in this column when a larger buffer is deemed necessary to protect wetland functions and values based on site conditions, site design, intensity and operational characteristics of the development/land use. Examples where increased buffers may be required include, but are not limited to, where a larger buffer is necessary to maintain viable populations of species listed as endangered, threatened or sensitive, or when land adjacent to the buffer is susceptible to severe erosion and erosion control measures are inadequate to effectively prevent adverse wetland impacts. Stream Buffers shall be established as follows: a. The applicable minimum buffer for Class I streams shall be the larger of the buffer established by these regulations or that established by the city's shoreline master program. b. The buffer widths required in this section may be increased by the director up to a maximum of 50% for Class 1, 2 and 4 streams and up to 100% for Class 3 streams in response to site-specific conditions and based on the report information submitted to characterize the functions and values of the stream. This includes, but is not limited to, situations. where the critical area serves as habitat for threatened, endangered or sensitive species. The applicant may propose to implement one or more enhancement measures, listed in order of preference below, which will be considered in establishing buffer requirements: i. Removal of fish barriers to restore accessibility to anadromous fish. ii. Enhancement of fish habitat using log structures incorporated as part of a fish habitat enhancement plan. 20 10083 iii. Enhancement of wildlife habitat by adding structures that are likely to be used by wildlife, including wood duck houses, bat boxes, nesting platforms, snags, root wads/stumps, birdhouses, and heron nesting areas. iv. Additional mitigating measures may include but are not limited to: (A) Landscaping outside the buffer area with native vegetation or a reduction in the amount. of clearing outside the buffer area; (B) Planting native vegetation within the buffer area, especially vegetation that would increase value for fish and wildlife, increase stream bank or slope stability, improve water quality, or provide aesthetic/recreational value; (C) Creating a surface channel where a stream was previously cuiverted or piped; (D) Removing or modifying existing stream culverts (such as at road crossings) to improve fish passage and flow capabilities which are not detrimental to fish; (E) Upgrading retention/detention facilities or other drainage facilities beyond required levels; or (F) Similar measures determined applicable by the director. c. No structures or improvements shall be permitted within the stream buffer area, including buildings, decks, docks, except as otherwise permitted or required under the city's adopted shoreline master program, or under one of the following circumstances: i. When the improvements are part of an approved enhancement, restoration or mitigation plan; or ii. For construction of new public roads and utilities, and accessory structures, when no feasible alternative location exists; or iii. Construction of foot trails, according to the following criteria: (A) Designed to minimize impact of permeable materials; (B) Designed to minimize impact on the stream system; (C) Of a maximum width of 12 feet; (D) Located within the outer half of the buffer, i.e., the portion of the buffer that is farther away from the stream; or iv. Construction of footbridges; or v. Construction of educational facilities, such as viewing platforms and informational signs. Long-term protection of a regulated stream and its associated buffer shall be provided by one of the following methods, except for the portion of Class I streams which are owned by the State Department of Natural Resources. The stream and buffer shall be placed in a separate tract on which development is prohibited, protected by execution of an easement dedicated to the city, a conservation organization, land trust, or similarly preserved through a permanent protective mechanism acceptable to the city. The location and limitations associated with the stream and its buffer shall be shown on the face of the deed or plat applicable to the property and shall be recorded with the King or Pierce County recording department. 21 10083 Wildlife Habitat Areas. Buffer widths for critical habitat areas shall be determined by the director based on consideration of the following factors: species recommendations of the Department of Fish and Wildlife; recommendations contained in the wildlife report and the nature and intensity of land uses and activities occurring on the site and on adjacent sites. Buffers shall not be required for secondary or tertiary habitat. Buffer widths for critical habitat areas may be modified by averaging buffer widths or by enhancing or restoring buffer quality. Certain uses and activities which are consistent with the purpose and function of the buffer for critical habitat areas and do not detract from its integrity may be permitted by the director within the buffer depending on the sensitivity of the habitat area. Examples of uses and activities with minimal impact which may be permitted in appropriate cases include permeable pedestrian trails and viewing platforms and utility easements; provided, that any impacts to the buffer resulting from permitted facilities shall be mitigated. When permitted, such facilities shall generally be located as far from the critical habitat area as possible. Long-term protection of critical habitat areas andi their associated buffer(s) shall be provided by one of the following methods. The critical habitat area and buffer(s) shall be placed in a separate tract on which development is prohibited, protected by execution of an easement, dedicated to the city, a conservation organization, land trust, or similarly preserved through a permanent protective mechanism acceptable to the city. The location and limitations associated with the critical habitat area and its buffer(s) shall be shown on the face of the deed or plat applicable to the property and shall be recorded with the King or Pierce County recording department. SELECTED DEVELOPMENT ACTION. The Selected Development Action for the Wyncrest Residential Community project site focuses on the development of a residential community consistent with the City of Auburn Comprehensive Plan and local zoning. Primary elements in the development of this residential community are the short-term and long-term protections of wetlands, streams, associated wildlife habitats, and local water quality. The Selected Development Action is presently in final design and would avoid and minimize direct impacts to identified wetlands, streams, and habitats within the project site as much as practicable. In addition, protective buffers shall be established adjacent to these critical areas consistent with the provisions of the City of Auburn Critical Areas Ordinance. Should the selected site design require unavoidable impacts to identified critical areas or associated buffers a compensatory mitigation program shall be prepared for agency review. 22 10083 STANDARD OF CARE This critical areas report has been completed by Habitat Technologies for use by Schneider Homes, Inc. Prior to extensive site planning, the wetland and stream boundaries, wetland and stream classifications, wetland ratings, and proposed buffers should be reviewed and approved by the City of Auburn and potentially other environmental permitting agencies. Habitat Technologies has provided professional services that are in accordance with the degree of care and skill generally accepted in the nature of the work accomplished. No other warranties are expressed or implied. Habitat Technologies is not responsible for design costs incurred before this document is approved by the appropriate resource and permitting agencies. Bryan W. Peck Thomas D. Deming Wetland Biologist Professional Wetland Scientist 23 10083 FIGURES i 24 10083 Figure I Site Vicinity 9 j ~1aG E1 ~a . 1t '4li19J, I=~ nt~~,I 63 N r~ _a q - idTrs -tT Irk r S' ?103 x= 01 n /LI, ; t 1 3(1'69 ~ i It n d a 2 2 ail ~ t l 1 t~ t ' ~ )0,, (7ry! {t Ori31~ 093011104 Pilo 0260 P2:1 1 :A s 41,01 :r A o~ 01)0~' LIdSiJ,' 6 l~ it i ) 911$ Llf 3 ro n '~U Jj v„ ~I ' [ t`i~e 01718 eM li z ~r ti ~.(4 )rl„I~. k 1, r•y` 1, ,d .g>.- 922 61 t I rU y %%%'e { _ fi ttt 9ylll 9191 '041 dl7Ul e!) 1735J) L1 4L p ju tU? Gf d 1(' 3j t j~ : ,h ~ rL,t3y 1 rF a Fx, tU33. 'ej r~7~~9Uai i>! 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U i! r ¢ i !97)G tG 1 j 3 . 1 f w ~f 0121 ~u~ r 7y - ~J f~ { r, 9912 X ~y L A t'_ ~ ld I IrJj ~ ~ ~ rr H K 3 a c t~s 9U,ek JtLid ~i ~*s'~w.- 9~ a qr a w qa a ij J~ tutL'r~(.w.~ a r .v ~ i - ~ f 1 tk 9«39'~ i i af~3 m N t, ,t < i t I g 9La36 y r r F7 ~ y 90.9 6 1 i 9' 2I,' 7Y s rt 921_) it 4~ -N t 1 4 19014? t, 1 94, 4 ~t -it r" w°' y _ _1~• x r x uJ g9€ 9141 a- <1 e ~s { ! E g { 9940 }J31j g . 'roil] La9,ftlj'rOGGO/~ ~1N3'a9,'~i ! - i 98, g f)ShJ )t 14!° d1G4g3 ' ) eUNt3J' . A / Ud4U_ . .~¢i~~ } tlGSU 9 Ld 9J01 9l3~ t { 016 'U } q ~ if n - Oar ! U~{ OJ,G9s a°t i U6)UY 1t k r .ra msj% 1 J, i 1aAar' 14 -d pt.fiJ3r t ~i~' - 47(3It)1 , . y sr 568k 1 ';C12010King Count orlu The informallon u~duded on this map has been wrnNed by King County staff from a variety of sources and is subject to change vitllour not ce. Kng County makes no representations or warranties, egress or unpCEed, as to accuracy, canp:eteness. time am", or sights to the use of such Information. Th;s document Is not intended for use as a survey (xodud. Fling CountX shall not be liable for any general, special. indirect, incidental, or consequenliat a King 4'OUn~y damages including, but not !united to, lost revenues or loss profits resW 6r tram the use of «ususa of the mlormatian camtaned on this map. Any sa;eof lh s map or in(omiat on on this reap is pro.Wed except by written porrrdssm of King County. Date;121MIO Sauce: King CountyiMAP-SensitiveAreas(httplh%wv.meuokc.gov/GlSh!.1aP) U~aax Figure 2 NWI Wildlife U.S. Fish and -Service Mapping .=W~ IL I Wetlands Inventory I Dec 8, 2010 Wetlands x~ t e s azl' ;1 lit, -res'wraier Emergent '01 re FcrssteirShn b + r s:uari anc N,ariae Deep-orator c! Es:uanne an. R'arine k~ PEMA Freshwater Pot! 4atir^~t Like a ^I _ Other Riparian ya ~ ~ yy pp W P s 4 1 C ~ q Herbaceous ForestedtShrub PEPAAd T _ k _ t 41 1%, 4 u t z C~ ~ ~ 3 x s .•4 r~j F. IpEH ! s " + ld '°°.^"+a+e. ..•-rr. 4e,~... 4, p. Thls map Is for gonoral rororonca only, The US Fish and Wlldlde S.M.. is not rosponslblo for the eocurocy or cun•ontnoas of Iho bass data shown on this map, All Wetfends Mletod data should be used In accordance with the foyer wwdafn found on the Wetlands Maooer web sit.. User Remarks: i I i t I .01 I I HABI TA°T Figure 3 TECHNOLOGIES PHS Resource Mapping i E t E } J 7 02 T21- N R4-OE i E J 5{ { S 8 S 33 i { 3 E3 PLSS Townships RIVERS j1:24.000) Spawning Presence - presumed r'LSS Sections DOT Hwys All Rearing Presence - Potential cent=s fv Presence - Presence- Major Citlos s+/ Interstate Documented Undetected Citlos US Hwys 0 presence - Historic = No Data o Towns State Routes i,7 wATER80DIE5 (1:24,000) t' HABITAT Figure ,4 Si' R TECHNOLOGIES WDFW Mapping S y. ~ 1 £ d 1~1 lox d 7230 +72300$ t ~ E $ 723 1723046 a Ile . ! ELI~'ATIOA IRANW61417YRON WATER BODIES ft.," 1 - - W ma '~l ---1 i Lc{.taral it t9 %'ufxc l'nicuaa 5IRGi115 T1ltt (nstA Bu, At,,,.-,J-AR-Aptiv Aa,'.='V) 1:t -Stftsm O'atrr T)jx S, r. A 91Albtt:y -;'l rr>aue - •.Y Tixil = 1Fct A~r.~ U. t-&.a~i~n. L laatrLl;dpui,r X.) N4xPed }set l5':1t'-Z 2-16 t\TTLA\6S-Aa m aea irtv tli> ea>, # Wma , Typo 0, az -T5T.B rm .:z .+tL<r HABITAT Figure 5 TECHNOLOGIES WDNR Mapping Figure b City of Auburn Mapping Yage 1 of i Figure 6 City of Auburn Mapping iy r ~ - S1 C `3t. t- - _ j y t 1 _ z~' - icy r r - ~r Y 1- , Parcels Lakes and Rivers L1 Streams 2007 Aerial Photo IWRed: Band-1 f':AGreen: Band _2 EBIue: Band-3 httn://mans.auburnwa.;ov/aspnet client/ESRI/WebADF/PrintTaskLayoutTemplates/defaul... 12/9/2010 Soil Map---King County Area, Washington Figure 7 Soils Mapping N. 556050 556140 556230` 556320 556410 556506 556590 556680 556770 556660 47-2(71V M )r AA 1 s , - N ro N y. _ ~r 's. ~ ~ X14.. w. ~ N s o- v j y h t 47' 19`x52" --4r19 5T_ . 556050, 556140 556230 556320 556410 556500 556590 556660 556770 556860 m e Map Scale:'1:4,160 if printed on Asize (8.5" x 11") sheet c 'meters. ~ A 0 so 100 200 300 Feet 0 " 200 -400 ;800 1.200 USDA Natural Resources,, Web Soil Survey 1219/2010 Conservation Service National Cooperative Soil Survey Page 1 of 3 REFERENCE LIST Adamus, P.R., E.J. Clairain.Jr., R.D. Smith, and R.E. Young. 1987. Wetland Evaluation Technique (WET); Volume 11: Methodology, Operational Draft Technical Report Y-87, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. Office of Biological Services, U.S. Fish and Wildlife Service, U.S. Department of the Interior, FWS/OBS-79/31. Environmental Laboratory. 1987. "Corps of Engineers Wetlands Delineation Manual," Technical Report Y-87-1, US Army Engineer Waterways Experiment Station, Vicksburg, Miss. Hitchcock, C.L., A. Cronquist. 1977.: Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Hruby, T. 2004. Washington State Wetland Rating System for Western Washington. Revised, Washington State Department of Ecology Publication #04-06-025. Reppert, R.T., W. Sigleo, E. Stakhiv, L. Messman, and C. Meyers. 1979. Wetland Values - Concepts and Methods for Wetland Evaluation. Research Report 79-R1, U.S. Army Corps of Engineers, Institute for Water Resources, Fort Belvoir, Virginia. U.S. Army Corps of Engineers. 2009. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, ed. J.S. Wakeley, R.W. Lichvar, and C.V. Noble. ERDC/EL TR-08-13. U.S. Department of Agriculture, Soils Conservation Service. Soils Survey of Pierce County Area Washington. Washington State Department of Ecology. 1997. Washington State Wetlands Identification and Delineation Manual. Publication Number 96-94. Washington State Department of Fisheries, Catalog of Washington Streams and Salmon Utilization, Volume 1., 1975. 25 10083 APPENDIX A - FIELD DATA FORMS # . ~ v z i , C - - - 26 10083 I WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 Applicant/Owner: State: WA Sampling Point: SPB 55 Invesugator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hillslope, terrace, etc.). Local relief (concave. convex, none): Slope Subregion (LRR): Let: Long: Dalum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are cllmatic I hydrologic conditions on the site typical for this time of year? Yes (D No ❑ (if no, explain In Remarks.) Are Vegetation O, Soil _ Or Hydrology O, signifies ntiy.disturbed? Are `Normal Circumstances" present? Yes ® No ❑ Are Vegetation Soil .,Or Hydrology Or naturally orobl6maUc? `(Ifneeded explain eny answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations; transects, Important features,.etc. Hydrophytic Vegetation Present? Yes ® No ❑ Hydric Soil Present? Yes ® No ❑ t s the Sampling Area within a Wetland? Yes ® No Welland Hydrology Present? Yes ® No ❑ Remarks: VEGETATION - Use scientific names of plants Absolute Dominant Indicator ee ratum (Plot Size: 15 foot radius) Dominance Test Worksheet: ° Coe Species? Status 1. Selix scouleriana s0 yes FAC Number of Dominant Species That Are OBL, FACW, or FAC: 2 (A) 2. 3. Total Number of Dominant Species Across -2 (B) All Strata; q 50 = Total Cover Percent of Dominant Species That Are SaplinglShrub Stratum (Plot Size: 15 foot radius) - OBL, FACK or FAC: 100 (A/ey 5. Prevalence Index worksheet: 6. Total % Cover of: Multiply by; 7. 06L species x1 = 8. FACW species x2 = 9. FAC species x3 = = Total Cover FACU species x4 = Herb Stralur~(Plot Size: 15 foot radius) UPL species x5 = 10. Phalarls arundinacea 100 yes FACW Column Totals: (A) (B) 11. Prevalence Index = BIA = 12. Hydrophytic Vegetation'lndicators: 13. YES Dominance Test Is >50% 14. YES Prevalence Index is 53.01 15. Morphological Adaptations' (Provide supporting data In 16. NO Remarks or on a separate sheet) 17. NO Welland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of hydric sell and wetland hydrology must be present, 100 = Total Cover unless ,Aslurbed or problematic. Woody Vine Stratum (Ptol Size: ) 1 2. = Total Cover Hydrophytic Vegetation % Bare .Ground In Herb Stratum Present? Yes ® No ❑ Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest Sampling Point: SPB-55 SOIL Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) %u Color (Moist) % Type' Loot Texture Remarks 0.6 10YR 212 100 gal 6.18 10YR 211 95 10YR 416 5 C M gsl 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators. (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Eptpedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) Mucky Mineral (F1) (except MLRA 1) C1 Other (Explain In Remarks) C1 Black Histic (A3) (3 loamy y ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (All) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ® Redox Dark Surface (F6) 3Indicators of hydrophy0c vegetation and welland ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Depth (Inches): Hydric Solis Present? Yes ® No ❑ Remarks: Field Indicators of hydric soll present. HYDROLOGY Welland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stained Leaves (Bg) ❑ Water-Stained Leaves (B9) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,4A. and 4B) ® Saturation (A3) ❑ Salt Crust (Bt 1) ❑ Drainage Patterns (B10) ❑ Water Marks (B1) ❑ Aquatic Invertebrates (B13) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (B2) ❑ Hydrogen Sulfide Odor (Cl) O Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (0) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Geomorphic Position (132) ❑ Algal Mat or Crust (B4) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aqultard (D3) ❑ Iron Deposits (B5) ❑ Recent Iron Reduction In Tilled Soils (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (136) (LRR A) ❑ Inundation Visible on Aerial Imagery (B7) ❑ Other (Explain In Rema(ks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Saturation Present? Yes ® No ❑ Depth (Inches): 1 Wetland Hydrology Present? Yes ® No ❑ (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), if available: Remarks: Soil appears to drain poorly following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM -Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 ApplicantlOwner: Slate: WA Sampling Point: SPB 60 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hlllslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Lai: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic / hydrologic conditions on the site lyplcal for this time of year? Yes ® No ❑ (If no, explain In Remarks.) Are Vegetation Soli Or Hydrology significantly disturbed? Are 'Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, Important features, etc. Hydrophytic Vegetation Present? Yes ® No ❑ Hydric Soil Present? Yes ❑ No ® Is the Sampling Area within a Welland? Yes ❑ No 0 Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants Tree Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator , Cove -Species? Status Dominance Test Worksheet: 1. Fraxlnus lallfolia 30 yes FACW Number of Dominant Species That Are 4 (A) 2. Crataegus monogyna 20 yes FACU OBL, FACW, or FAC: 3. Total Number of Dominant Species Across 7 (B) 4 All Strata: s0 = Total Cover Percent of Dominant Species Thal Are OBL, FACW, or FAC: 57 (A/B) SaplinalShrub Stratum (Plot Size: 15 toot radius) 6. Rubus procera 30 yes FACU Prevalence Index worksheet: 6. Cylisus scoparlus 20 yes FACU Total % Cover of, MulUoly bye 7. OBL species x1 = 8. FACW species x2 = 9. FAC species x3 = 50 = Total Cover FACU species x4 = er (Plot Size: 15 foot radius) UPL species x5 = 10. Daclylls glomerata 20 yes FACU Column Totals: (A) (B) 11. Phleum pretense 20 yes FAC Prevalence Index = B/A = 12. Phalaris arundinacea 20 yes FACW Hydrophytic Vegetation indicators: 13. Holcus lanatus 10 FAC YES Dominance Test Is >50% 14. Poe. spp. 20 - NO Prevalence Index Is <3,0' 16. Agrostis tenuls 10 FAC NO Morphological Adaptations' (Provide supporting data In 16, Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of hydric soli and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 2. = Total Cover Hydrophytic Vegetation % Bare Ground In Herb Stratum Present? Yes ® No ❑ Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sam ling Point: SPB-60 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (molst) % Color (Moist) % Type` Loc2 Texture Remarks 0.6 10YR 314 100 gal 6-14 10YR 312 100 gal 14-20 10YR 412 100 gal 'Type; C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coaled Sand Grains. 2Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Sollss: ❑ Histosol (A1) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Hisllc Eplpedon (A2) ❑ Stripped Matrix (86) ❑ Red Parent Material (TF2) ❑ Black Hislic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) D Other (Explain In Remarks) O Hydrogen Sulfide (A4) ❑ Loamy Gieyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3).. ❑ Thick Dark Surface (A12) D Redox Dark Surface (F6) Surface (F7) 3Indicators of hydrophytic vegetation and welland [3 Sandy Mucky Mineral (St) Depleted Dark ❑ hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (if present): Type: Depth (Inches); Hydric Soils Present? Yes O No Remarks: Field Indicators of hyddc soil NOT present. HYDROLOGY Welland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stained Leaves (B9) ❑ Water-Stained Leaves (89) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (B11) ❑ Drainage Patterns (1310) ❑ Water Marks (B1) ❑ Aquatic Invertebrates (613) D Dry-Season Water Table (C2) ❑ Sediment Deposits (82) ❑ Hydrogen Sulfide Odor (Cl) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (83) ❑ Oxidized Rhlzospheres along Living Roots (C3) ❑ Geomorphic Position (132) D Algal Mat or Crust (B4) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquitard (133) ❑ Iron Deposits (85) ❑ Recent Iron Reduction In Tilled Solis (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Soil Cracks (86) ❑ Stunted or Stresses Plants (1311) (LRR A) ❑ Raised Ant Mounds (DB) (LRR A) ❑ Inundation Visible on Aerial Imagery (57) ❑ Other (Explain in Remarks) ❑ Frost-Heave Hummocks (137) ❑ Sparsely Vegetated Concave Surface (B8) Field Observations: Surface Water Present? Yes ❑ No Depth (Inches): Water Table Present? Yes O No ® Depth (inches): Saturation Present? Yes O No ® Depth (inches): Wetland Hydrology Present? Yes ❑ No (Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM -Western Mountains, Valleys, and Coast Region Project Site: Wynrrest City/County: King Sampling Date: 07 DEC 10 Applicant/Owner: State: WA Sampling Point SPB 61 InvesUgator(s): Habitat Technologies Section, Tovmshlp, Range: S02 T21 R4E Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Sol] Map Unit Name: Aldenvood gravelly sandy loam NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation O. Soil Or Hydrology significantly disturbed? Are 'Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil D. Or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, Important features, etc. Hydrophytic Vegetation Present? Yes ® No ❑ Hyddc Soil Present? Yes ® No O Is the Sampling Area within a Wetland? Yes ❑ o Welland Hydrology Present? Yes D No Remarks: VEGETATION - Use scientific names of plants . Tree Slralum (Plot Size: 15 foot radius) Absolute Dominant Indicator ° Cove r Species? akly Dominance Test Worksheet: 1. Fraxinus latifolla 30 yes FACW Number of Dominant Species That Are 2. Crataegus monogyna 20 yes FACU OBL, FACW, or FAC: 4 (A) 3, Total Number of Dominant Species Across 7 (B) 4 All Strata: 50 = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 57 (A/B) Se nglShrub Stratum (Plot Size: 15 foot radius) 6. Rubus procera 30 yes FACU Prevalence Index worksheet: 6. Cylisus scoparlus 20 yes FACU Total % Cover of, ultioty bv; 7. OBL species x1 = 8, FACW species x2 = g, FAC species x3 = 50 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Dactylis glomerata 20 yes FACU Column Totals: (A) (B) 11. Phleum pratense 20 yes FAC Prevalence Index = B/A = 12. Phalaris arundinacea 20 yes FACW Hydrophytic Vegetation Indicators: 13. Holcus lanstus 10 FAC YES Dominance Test Is >50% 14. Pea spp. 20 NO Prevalence Index is 53.0' 16. Agrostis tenuls 10 FAC Morphological Adaptations' (Provide supporting data In 18 NO Remarks or on a separate sheet) 17, NO Weiland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20, 'Indicators of hyddc soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Iftiody Vine Stratum (Plot Size: ) 1. 2. = Total Cover Hydrophytic Vegetation % Bare Ground In Herb Stratum Present? Yes ® No U Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sampling Point: SPB-61 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (Moist) % Type` Loc? Texture Remarks 9-6 19YR 312 100 gsI 6.18 19YR 311 95 19YR 416 5 C M gel Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Uning, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Solls3: ❑ Histosol (At) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ HIsUc Epfpedon (A2) O Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Hislic (A3) O Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (Explain In Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (All) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ® Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (51) El Depleted Dark Surface (F7) 3indicators of hydrophylle vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Depth (Inches): Hydric Soils Present? Yes ® No ❑ Remarks: Field Indicators of hydric soil NOT present HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stained Leaves (B9) O Water-Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2,41A, and 4B) (MLRA 1, 2, 4A, and 4B) O Saturation (A3) ❑ Salt Crust (BI 1) O Drainage Patterns (810) ❑ Water Marks (81) ❑ Aquatic Invertebrates (813) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (132) O Hydrogen Sulfide Odor (Cl) O Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (63) ❑ Oxidized Rhizospheres along Living Roots (C3) D Geomorphic Position (132) ❑ Algal Mal or Crust (B4) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aqultard (D3) ❑ Iron Deposits (85) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ FAC-Neutral Test (135) ❑ Surface Soil Cracks (86) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (136) (LRR A) ❑ Inundation Visible on Aerial Imagery (B7) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (137) ❑ Sparsely Vegetated Concave Surface (88) Field Observations: Surface Water Present? Yes O No 0. Depth (inches): Water Table Present? Yes ❑ No ® Depth (Inches): Saturation Present? Yes ® No O Depth (inches): 15 Wetland Hydrology Present? Yes ❑ No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), If available: Remarks: Soll appears to raln moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version i i WETLAND DETERMINATION DATA FORM -Western Mountains, Valleys, and Coast Region a Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 1 Applicant/Owner: Slate: WA Sampling Point: SPB 62 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hllislope, terrace, eta): Local relief (concave, convex, none): Slope ! Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic i hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain In Remarks.) i Are Vegetation Soil Or Hydrology significantly disturbed? Are "Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) i SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, Important features, etc. Hydrophylic Vegetation Present? Yes O No Hydric Sal Present? Yes O No ® Is the Sampling Area within a Wetland? Yes ❑ o Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants Tree Stratum (Plot Size: 15 foot radius) Absolute Dominant _ Indicator Dominance Test Worksheet: % Cover Species? Status 1. Fraxinus latlfolla 20 yes FACW Number of Dominant Species That Are OBL, FACW, or FAC: 1 (A) 2. Rhemnus purehlena 10 FAC 3. Total Number of Dominant Species Across 5 (B) 4 All Strata: 30 = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 20 (A1B) ,~apling~Shrub Stratum (Plot Size: 15 foot radius) 5. Oemlerla cerasiformis 30 yes FACU Prevalence Index worksheet: 6. Cytlsus scoparlus to yes FACU I4LLy° Cover oL Multiply k?)G 7. OBL species xt = 8. FACW species x2 = g, FAC species x3 = 40 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Pteridlum aquillum 20 yes FACU Column Totals: (A) (B) It. Cirslum arvenals 20 yes FACU Prevalence Index = B(A = 12. Taraxacum officinale 15 FACU Hydrophylic Vegetation Indicators: 13. Plantago major 10 FACU NO Dominance Test Is >50% 14. Phleum pretense 10 FAC NO Prevalence Index is <3.0' 15. Dactylis glomerate 10 FACW NO Morphological Adaptations' (Provide supporting data In 16. Poe app. 15 Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophylic Vegetation' (Explain) 19. 20• 'Indicators of hydric soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1 2. = Total Cover Hydrophylic Vegetation % Bare Ground In Herb Stratum Present? Yes ❑ No Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast- Interim Version Project Site: Wyncrest SOIL Sampling Point: SPB-62 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (inches) Color (molst) % Color (Moist) % Type' Loe2 Texture Remarks 0.8 10YR 312 100 951 8-20 10YR 413 95 10YR 416. 5 C M 051 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: Pt.=Pore Lining, M=Matrix Hydric Solt Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Sollsa: ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) O Histic Epipedon (A2) ❑ Stripped Matrix (Se) ❑ Red Parent Material (TF2) ❑ Black Histic- (A3) D Loamy Mucky Mineral (F1) (except MLRA 1) O Other (Explain in Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ❑ Redox Dark Surface (F6) [3 Sandy Mucky Mineral (St) ❑ Depleted Dark Surface (F7) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) D Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Depth (Inches): Hydric Solis Present? Yes O No Remarks: Field Indicators of hydric soil NOT present i HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stained Leaves (89) O Water-Stained Leaves (89) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,4A. and 4B) ❑ Saturation (A3) ❑ Salt Crust (611) O Drainage Patterns (810) ❑ Water Marks (81) ❑ Aquatic Invertebrates (1313) O Dry-Season Water Table (C2) O Sediment Deposits (132) ❑ Hydrogen Sulfide Odor (CS) O Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (133) ❑ Oxidized Rhizospheres along Living Roots (C3) O Geomorphic Position (D2) ❑ Algal Mat or Crust (134) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquitard (D3) ❑ Iron Deposits (B5) ❑ Recent Iron Reduction In Tilled Solls (C6) ❑ FAC-Neutral Test (D5) O Surface Soll Cracks (136) ❑ Stunted or Stresses Plants (Di) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Inundation Visible on Aerial Imagery (B7) O Other (Explain In Remarks) ❑ Frost-Heave Hummocks (07) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No 0. Depth (inches): Water Table Present? Yes ❑ No ® Depth (Inches): Saturation Present? Yes ® No O Depth (Inches): 18 Wetland Hydrology Present? Yes O No (Includes capillary fringe) Describe Recorded Data (stream gauge, monfloring well, aerial photos, previous Inspections), If available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM -Western Mountains, Valleys, and Coast Region Project Site: Wyncresl City/County: King Sampling Date: 07 DEC 10 Applicant/Owner. State: WA Sampling Point: SPB 05 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic I hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain In Remarks.) Are Vegetation Soil Or Hydrology O, significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, Important features, etc. Hydrophytic Vegetation Present? Yes ❑ No Hyddc Solt Present? Yes ❑ No N Is the Sampling Area within a Wetland? :Yes ❑ Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants Tree Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator % Cover Species? Status Dominance Test Worksheet: 1. Pyrus fusca 20 yes FACW Number of Dominant Species That Are 2 OBL, FACW, or FAC: i (A) 3. Total Number of Dominant Species Across 5 (B) q All Strata: 20 = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 20 (AB} Sapflnq/Shrub Stratum (Plot Size: 15 foot radius) 5. Cytisus scoparlus 30 yes UPL Prevalence Index worksheet: 0. Rubus ursinus 10 yes FACU Total % Cover of: Multiply by: 7. OBL species x1 = g, FACW species x2 = 9. FAC species x3 = 40 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Pteridlum squillum 20 yes FACU Column Totals: (A) (B) 11. Clrslum arvensis 20 yes FACU Prevalence Index = BIA = 12. Taraxacum officlnale 15 FACU Hydrophytic Vegetation indicators: 13. Plantago major 10 FACU NO Dominance Test is >50% 14. Dactylls glomerata 15 FACW NO Prevalence Index Is 53.0' 15. Poa spp• 20 NO Morphological Adaptations' (Provide supporting data In 16. Remarks or on a separate sheet) 17. NO Welland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'indicators of hydric soll and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1. 2. = Total Cover Hydrophytic Vegetation % Bare Ground in Herb Stratum Present? Yes O No Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncresl SOIL Sam ling Point: SPB-65 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (Inches) Color (moist) % Color (Moist) % Type' LOCI Texture Remarks 0.6 10YR 312 100 gal 6.18 10YR 414 95 10YR 416 5 C M gsl 'Type: C= Concentration, D=Deplelion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Location: PL=Pore Lining, M=Matrix Hydflc Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils: ❑ Histosot (A1) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ HIsOo Eplpedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (Ft) (except MLRA 1) ❑ Other (Explain In Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ❑ Redox Dark Surface (F6) Depleted Dark Surface (F7 3Indicators of hydrophytic vegetation and wetland ❑ Sandy Mucky Mineral (S1) De ❑ P ) hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Hydrlc Solis Present? Yes ❑ No Depth (Inches): Remarks: Field Indicators of hydric soil NOT present. HYDROLOGY Welland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) [3 Surface Water (Ai) ❑ Water-Stalned Leaves (B9) ❑ WaterStalned Leaves (89) ❑ High Water Table (A2) (except MLRA 1, 2, 4A, and 4B) (MLRA 1, 2,4A, and 48) ❑ Saturation (A3) ❑ Salt Crust (811) ❑ Drainage Patterns (B10) ❑ Water Marks (BS) ❑ Aquatic Invertebrates (1313) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (62) ❑ Hydrogen Sulfide Odor (Cl) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (B3) ❑ Oxidized Rhizospheres along Living Roots (0) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (154) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquitard (D3) ❑ Iron Deposits (85) ❑ Recent Iron Reduction In Tilled Solis (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Sou Cracks (86) ❑ Stunted or Stresses Plants (Dl) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Inundation Visible on Aerial Imagery (B7) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (88) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Saturation Present? Yes ❑ No ® Depth (Inches): Wetland Hydrology Present? Yes ❑ No (Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 AppllcantlOwner: Stale: WA Sampling Point: SPB 66 Investigalor(s): Habitat Technologies Section, Township, Range: S02 T21 RAE Landform (hilislope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Aldenvood gravelly sandy loam NWI classification: Are climatic I hydrologic conditions on the site typical for this time of year? Yes ® No O (If no, explain In Remarks.) Are Vegetation Soli D, Or Hydrology O, significantly disturbed? Are"Normal Circumstances' present? Yes ® No D Are Vegetation D, Soil O, Or Hydrology O, naturally problematic? (If needed, explain any answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, Important features, etc. Hydrophytic Vegetation Present? Yes O No Hydric Soil Present? Yes D No ® Is the Sampling Area within a Wetland? Yes O o 19 19 Wetland Hydrology Present? Yes O No Remarks: VEGETATION - Use scientific names of plants wee Stratum (Plot Size: 15 foot radius) Absolute Dominant - Indicator ° Cover Species Status Dominance Test Worksheet: 1. Pyrus fusca 20 yes FACW Number of Dominant Species That Are 2 OBL, FACW, or FAC: 1 (A) 3. Total Number of Dominant Species Across 5 (B) 4 All Strata: 20 = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 20 (AB) ling/Shrub Stratum (Plot Size: 15 foot radius) 5. Cyllsus scoparlus 30 yes UPL Prevalence Index worksheet: 6. Rubus procera 10 yes FACU Total % Cover of: Multioly bv: 7. OBL species x1 = 8, FACW species x2 = g, FAC species x3 = 40 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Pterldlum aqulltum 20 yes FACU Column Totals: (A) (B) 11. Cirslum arvensls 20 yes FACU Prevalence Index = BIA = 12. Taraxacum officinale 15 FACU Hydrophyllc Vegetation Indicators: 13. Plantago major 10 FACU NO Dominance Test Is >50% 14. Ranunculus repens 15 FACW NO Prevalence Index 19 :53.01 15. Poe spp. 20 NO Morphological Adaptations' (Provide supporting data In 18 Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18, NO Problematic Hydrophyllc Vegetation' (Explain) 19. 20. 'Indicators of hydric soil and wetland hydrology must be present, 60 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1 ' 2. = Total Cover Hydrophytic Vegetation % Bare Ground in Herb Stratum Present? Yes ❑ No Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Slte: Wyncrest SOIL Sam Iing Point: SPB-66 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (Moist) % Type' Loc? Texture Remarks 0-12 1 CYR 312 100 gal 12-18 10YR 414 95 10YR 416. 5 C M gsl 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Sotlsa: ❑ Histosol (At) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ HfsUc Eplpedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) O Other (Explain in Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ❑ Redox Dark Surface (F8) [3 Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (if present): Type: Depth (Inches): Hydric Soils Present? Yes ❑ No Remarks: Field indicators of hydric Boll NOT present HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stained Leaves (139) ❑ Water-Stained Leaves (Bg) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,4A, and 4B) ❑ Saturation 03) ❑ Salt Crust (811) ❑ Drainage Patterns (B10) ❑ Water Marks (B1) ❑ Aquatic Invertebrates (B13) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (B2) ❑ Hydrogen Sulfide Odor (C1) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (133) ❑ Oxidized Rhlzospheres along Living Roots (C3) ❑ Geomorphtc Position (D2) [3 Algal Mat or Crust (84) O Presence of Reduced Iron (C4) ❑ Shallow Aqullard (133) ❑ Iron Deposits (65) O Recent Iron Reduction In Tilled Solis (C6) ❑ FAC-Neutral Test (135) ❑ Surface Soil Cracks (B6) ❑ Stunted or Stresses Plants (131) (LRR A) ❑ Raised Ant Mounds (DO) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (BB) Field Observations: Surface Water Present? Yes ❑ No 9 Depth (Inches): Waler Table Present? Yes ❑ No 0 Depth (inches): Saturation Present? Yes ❑ No ® Depth (inches): Welland Hydrology Present? Yes ❑ No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), If available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County. King Sampling Date: 07 DEC 10 AppllcanVOwner. State: WA Sampling Point: SPB 67 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hlllslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain In Remarks.) Are Vegetation Soil Or Hydrology significantly disturbed? Are `Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, Important features, etc. Hydrophytic Vegetation Present? Yes ® No ❑ j Hydric Soil Present? Yes ® No ❑ Is the Sampling Area within a Wetland? as ® No ❑ Welland Hydrology Present? Yes ® No ❑ Remarks: VEGETATION - Use scientific names of plants Tree Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator ° Cove Species? Status Dominance Test Worksheet: 1 Number of Dominant Species That Are 2. OBL, FACW, or FAC: 2 (A) 3. Total Number of Dominant Species Across 4. All Strata: 3 (e) = Total Cover Percent of Dominant Species That Are Saplingftrub Stratum (Plot Size: 15 foot radius) OBL, FACW, or FAC: 67 (A/B) 5. Rubus procera 15 yes FACU Prevalence Index worksheet: 6. Total % Cover of: Multiply bv: 7. OBL species xt = 8. FACW species x2 = 9. FAC species x3 = 15 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Agrostis tenuls 40 yes FAC Column Totals: (A) {B} 11. Ranunculus repens 40 yes FACW Prevalence Index = B/A = 12. Juncus effusus 15 FACW Hydrophytic Vegetation Indicators: 13. Poa spp 5 YES Dominance Test is >50% 14. YES Prevalence Index Is 553.0' 15. Morphological Adaptations' (Provide supporting data In 16. NO Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of hyddc soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1. 2. = Total Cover Hydrophytic Vegetation % Bare Ground in Herb Stratum Present? Yes ® No ❑ Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sampllno Point: SPB-67 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (Inches) Color (moist) % Color (Moist) % Type' Loci Texture Remarks 0.6 1CYR 311 160 gsi 6.18 10YR 412 60 10YR 416. 40 C M 9sl 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Sotls3: ❑ Hislosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (86) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (Ft) (except MLRA 1) ❑ Other (Explain In Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (At 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ® Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) 3lndicators of hydrophylic vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) O Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Depth (Inches): Hydric Solis Present? Yes ® No ❑ Remarks: Field Indicators of hydric soil present. HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required: check alf that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stalned Leaves (69) ❑ Water-Stained Leaves (89) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,4A, and 413) ® Saturation (A3) ❑ Salt Crust (Bt t) ❑ Drainage Patterns (B10) ❑ Water Marks (81) ❑ Aquatic Invertebrates (813) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (B2) ❑ Hydrogen Sulfide Odor (C1) ❑ Saturation Visible on Aerial Imagery (Cg) ❑ Drift Deposits (83) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (84) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aqultard (D3) ❑ Iron Deposits (65) ❑ Recent Iron Reduction In Tilled Soils (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (DI) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) O Inundation Visible on Aerial Imagery (87) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (07) ❑ Sparsely Vegetated Concave Surface (BB) Field Observations: Surface Water Present? Yes ❑ No ® Depth (Inches): Water Table Present? Yes ® No ❑ Depth (Inches): 7 Saturation Present? Yes ® No ❑ Depth (inches): Surface Wetland Hydrology Present? Yes ® No ❑ (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), If available: Remarks: Soil appears to drain poorly following seasonal storm events. US Army Cops of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County. King Sampling Date: 07 DEC 10 Applicant/Owner. Slate: WA Sampling Point: SPB 68 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hllislope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Lai: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic I hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation Soil Or Hydrology significantly disturbed? Are `Normal Circumstances" present? Yes ® No ❑ Are Vegetation Sol[ Or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ® No ❑ Hydric Soil Present? Yes ® No ❑ Is the Sampling Area within a Wetland? Yes ® No ❑ Welland Hydrology Present? Yes N No ❑ Remarks: VEGETATION - Use scientific names of plants = Tree Stratum (Plot Size: 15 toot radius) Absolute Dominant Indicator % Cover Species? S a us Dominance Test Worksheet: 1. Number of Dominant Species That Are 2 OBL, FACW, or FAC: 2 (A) 3. Total Number of Dominant Species Across 3 (B) 4 All Strata: =Total Cover Percent of Dominant Species That Are Sapling/Shrub Stratum (Plot Size: 15 foot radius) OBL. FACW, or FAC: 67 (AB) 5. Rubus procera 25 yes FACU Prevalence Index worksheet: 6. Total ° Cover • Muitloly bv. 7. OBL species xt = 8. FACW species x2 = 9. FAC species x3 = 25 = Total Cover FACU specles x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Phalaris arundinacea 50 yes FACW Column Tolals: (A) (B) 11. Ranunculus repens so yes FACW Prevalence Index = B/A = 12. Hydrophylic Vegetation Indicators: 13. YES Dominance Test is >50% 14. YES Prevalence Index is <-3.0' 15. Morphological Adaptations' (Provide supporting data In 16. NO Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of hydric soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1. 2. = Total Cover Hydrophytlc Vegetation % Bare Ground in Herb Stratum Present? Yes ® No p Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sam fin Point: SPB-68 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (Moist) % Type' Loe Texture Remarks 0-6 10YR 212 100 gsl 5.18 10YR 211 95 10YR 416 _ 5 C M gel 'Type: C- Concentration, D=Deplellon, RM=Reduced Matrix, CS=Covered or Coated Send Grains, 2Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils': ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (56) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (Explain in Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (A11) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (At 2) ® Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (St) ❑ Depleted Dark Surface (F7) slndlcators of hydrophytlc vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (84) ❑ Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Depth (Inches): Hydric Solis Present? Yes ® No ❑ Remarks: Field Indicators of hydric soil present, HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minlmum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (AS) C] Water-Stained Leaves (69) ❑ Water-Stained Leaves (B9) ❑ High Water Table (A2) (except MLRA 1, 21 4A, and 4B) (MLRA 1, 2,4A, and 4B) ® Saturation (A3) ❑ Sall Crust (B11) ❑ Drainage Patterns (1310) O Water Marks (81) ❑ Aquatic Invertebrates (B13) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (B2) ❑ Hydrogen Sulfide Odor (Cl) ❑ Saturation Visible on Aerial imagery (C9) ❑ Drift Deposits (63) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (B4) O Presence of Reduced Iron (C4) O Shallow Aqultard (D3) ❑ Iron Deposits (135) ❑ Recent Iron Reduction In Tilled Solis (C6) O FAC-Neutral Test (D5) O Surface Soil Cracks (86) ❑ Stunted or Stresses Plants (131) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Inundation Visible on Aerial Imagery (67) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (BB) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ® No ❑ Depth (Inches): 5 Saturation Present? Yes ® No O Depth (Inches): Surface Wetland Hydrology Present? Yes ® No ❑ (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), If available: Remarks: Soil appears to drain poorly following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 Appllcant/Owner. State: WA Sampling Point: SPB 69 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hlllslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Aldenvood gravelly sandy loam NWI classification: Are climatic I hydrologic condltions on the site typical for this time of year? Yes ® No ❑ (if no, explain In Remarks.) Are Vegetation Soil Or Hydrology significantly disturbed? Are 'Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, Important features, etc. Hydrophytic Vegetation Present? Yes ❑ No Hydric Soil Present? Yes ❑ No ® Is the Sampling Area within a Wetland? Yes ❑ Wetland Hydrology Present? Yes ❑ No ® Remarks: VEGETATION - Use scientific names of (ants Tree Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator Dominance Test Worksheet: % Cove species? Stalus 1. Acer macrophyllum 20 yes FACU Number of Dominant Species That Are OBL, FACW, or FAC: 0 (A) 2. 3. Total Number of Dominant Species Across 6 (B) 4 All Strata: 20 =Total Cover Percent of Dominant Species That Are Sapling/Shrub Stratum (Plot Size: 15 foot radius) OBL, FACW, or FAC: 0 (A/B) 5. Rubus procera 40 yes FACU Prevalence Index worksheet: 6. Cytisus scoparius 30 yes UAL Total % Cover of: Multiply bv. 7. Rubus ursinus 10 FACU OBL species x1 = 8. FACW species x2 = 9. FAC species x3 = 80 = Total Cover FACU species x4 - Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Pteridlum aqulNum 20 yes FACU Column Totals: (A) (B) 11. Ciralum arvensle 20 yes FACU Prevalence Index = BIA = 12. Dactylls glomerata 20 yes FACU Hydrophytic Vegetation Indicators: 13. Poa spp. NO Dominance Test Is >50% 14. NO Prevalence Index is !53.01 15. NO Morphological Adaptations' (Provide supporting data in 18, Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of hyddc soil and wetland hydrology must be present, 60 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1 . 2. = Total Cover Hydrophytic Vegetation % Bare Ground In Herb Stratum Present? Yes ❑ No Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sampling Point: SPB-69 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (Inches) Color (moist) % Color (Moist) % Type' Loc2 Texture Remarks 0.8 1CYR 312 100 gsl 8.18 10YR 4I3 100 gsl 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coaled Sand Grains. zLocation: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Sollsi: ❑ Hislosol (Al) ❑ Sandy Redox (S5) ❑ 2 cm Muck (Al 0) ❑ Histlc Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histlc (A3) ❑ Loamy Mucky Mineral (Ft) (except MLRA 1) ❑ Other (Explain in Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (172) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ❑ Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (If present): Type: Depth (Inches): Hydric Solis Present? Yes ❑ No Remarks: Field Indicators of hydric soil NOT present HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water 01) ❑ water-Stalned Leaves (B9) ❑ Water-Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 413) (MLRA 1, 2,4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (B11) ❑ Drainage Patterns (B10) ❑ Water Marks (81) ❑ Aquatic Invertebrates (813) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (82) ❑ Hydrogen Sulfide Odor (C1) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (B3) ❑ Oxidized Rhizospheres along Living Roots (0) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (B4) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aqultard (133) ❑ Iron Deposits (85) ❑ Recent Iran Reduction In Tilled Soils (C6) ❑ FAC-Neutral Test (D5) ❑ Surface Soil Cracks (B6) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Inundation Visible on Aerial Imagery (B7) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (BB) Field Observations: Surface Water Present? Yes ❑ No ® Depth (Inches): Water Table Present? Yes ❑ No ® Depth (Inches): Saturation Present? Yes ❑ No IR Depth (Inches): Wetland Hydrology Present? Yes ❑ No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), if available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Englneers Western Mountains, Valley, and Coast - Interim Version WETLAND DETERMINATION DATA FORM -Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County. King Sampling Date: 07 DEC 10 Appllcant/Owner. State: WA Sampling Point: SPB 70 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hilislope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Lai: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic I hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation Soil O, Or Hydrology significantly disturbed? Are 'Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil O. Or Hydrology naturally problematic? (If needed, explain any answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, Important features, etc. Hydrophytlc Vegetation Present? Yes ❑ No Hyddc Solt Present? Yes ❑ No ® Is the Sampling Area within a Wetland? Yes ❑ N Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants : Tree Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator o% Cover Species Status Dominance Test Worksheet: 1• Number of Dominant Species That Are 2 OBL, FACW, or FAC: 1 (A) 3. Total Number of Dominant Species Across 4 All Strata: 3 (B) =Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 33 (AIB) SaplinglShrub Stratum (Plot Size: 15 foot radius) 5. Rubus procera 80 yes FACU Prevalence Index worksheet: 8. Total ° Cover of. Multiply b)G 7. OBL species x1 = 8. FACW species x2 = 9. FAC species x3 = 80 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UAL species X6= 10. Phalarls arundinacea 20 yes FACW Column Totals: (A) (B) 11. Cirsium arvensis 20 yes FACU Prevalence Index = BIA = 12. Hydrophytic Vegetation Indicators: 13. NO Dominance Test Is >50% 14. NO Prevalence Index Is X3.0' 15. Morphological Adaptations' (Provide supporting data in 18 NO Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophytlc Vegetation' (Explain) 19. 20. 'Indicators or hydric soil and wetland hydrology must be present, 40 = Total Cover unless disturbed or problematic. Woody Vine S)latum (Plot Size: ) 1 . 2. = Total Cover Hydrophytic Vegetation % Bare Ground in Herb Stratum Present? Yes ❑ No Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Pro)ecl Site: Wyncrest SOIL Sampling Point: SPB-70 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (Inches) Color (moist) % Color (Moist) % Type' LocZ Texture Remarks 0.8 10YR 212 100 gsl 8.18 10YR 312 98 10YR 418. 2 C M gsl 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Location: PL=Pore Llning, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils: ❑ Histosol (Al) ❑ Sandy Redox (S5) O 2 cm Muck (Al 0) ❑ Histic Epipedon (A2) O Stripped Matrix (Sri) O Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) D Other (Explain In Remarks) ❑ Hydrogen Sulfide (A4) O Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) O Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ❑ Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (Si) ❑ Depleted Dark Surface (F7) 'Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (if present): Type: Depth (Inches): Hydric Soils Present? Yes ❑ No Remarks: Field Indicators of hydric soil NOT present. HYDROLOGY Wetland Hydrology Indicators. Primary Indicators (minimum of one required; check all that apply) Secondary indicators (2 or more required) ❑ Surface Water (Al) ❑ WaterSlalned Leaves (B9) ❑ Water-Stained Leaves (139) O High Water Table (A2) (except MLRA 1, 2,41A, and 413) (MLRA 1, 2,4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (1311) ❑ Drainage Patterns (610) ❑ Water Marks (131) ❑ Aquatic Invertebrates (B13) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (132) ❑ Hydrogen Sulfide Odor (C7) O Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (83) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Geomorphlc Position (132) ❑ Algal Mat or Crust (84) O Presence of Reduced Iron (C4) ❑ Shallow Aquitard (03) O Iron Deposits (B5) 0 Recent Iron Reduction In Tilled Soils (C6) ❑ FAC•Neutral Test (D5) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (DI) (LRR A) O Raised Ant Mounds (136) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain in Remarks) O Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (BB) Field Observations: Surface Water Present? Yes ❑ No 0. Depth (inches): Water Table Present? Yes ❑ No 10 Depth (Inches): Saturation Present? Yes ❑ No ® Depth (inches): Wetland Hydrology Present? Yes ❑ No (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), If available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version i f I WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region 9 Project Site: Wyncrest City/county: King Sampling Date: 07 DEC 10 7 Applicant/Owner. State: WA Sampling Point: SPB 71 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope (°h): i Subregion (LRR): Let: Long: Datum: 3 Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain In Remarks.) Are Vegetation Sol[ Or Hydrology significantly disturbed? Are'Normal Circumstances' present? Yes ® No ❑ 1 Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers In Remarks.) I~ f SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, important features, etc. i j Hydrophytlc Vegetation Present? Yes ® No ❑ Hydric Soil Present? Yes ❑ No ® Is the Sampling Area within a Wetland? Yes ❑ o Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants Tlgg Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator % Cover Species? talu Dominance Test Worksheet: 1. Alnus rubra 20 yes FAC Number of Dominant Species That Are 2 OBL, FACW, or FAC: 2 (A) 3. Total Number of Dominant Species Across 4 All Strata: 2 (B) 20 = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100 (A18) $aplLng_!$}rrub Stratum (Plot Size: 15 foot radius) 5. Prevalence Index worksheet: 8, Total % Cover of: Multiply by: 7. OBL species xt = 8. FACW species x2 = 9. FAC species x3 - = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Phalaris arundlnacea 100 yes FACW Column Totals: (A) (B) 11. Prevalence Index = B/A = 12. Hydrophytic Vegetation Indicators: 13. YES Dominance Test Is >50% 14. YES Prevalence Index Is :53.01 15. Morphological Adaptations' (Provide su HO pporling data In 10. Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 16. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'indicators of hydric soil and wetland hydrology must be present. 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: ) 1. 2. = Total Cover Hydrophylc Vegetation % Bare Ground in Herb Stratum Present? Yes ® No ❑ Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Verslon Project Site: Wyncrest SOIL Semolina Point: SPB-71 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (molst) % Color (Molst) Type' Loc2 Texture Remarks 0.18 10YR 212 100 gsl 'Type: C= Concentration, D=Depletlon, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2LocaUon: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils': ❑ Histosol (Al) O Sandy Redox (S5) ❑ 2 cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (SO) ❑ Red Parent Material (TF2) O Black Histic (A3) O Loamy Mucky Mineral (Ft) (except MLRA 1) O Other (Explain In Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (A11) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ❑ Redox Dark Surface (F8) slndicators of hydrophyffc vegetation and wetland ❑ Sandy Mucky Mineral (81). ❑ Depleted Dark Surface (F7} hydrology must be present, unless disturbed or j] Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (if present): Type: Depth (inches): Hydric Soils Present? Yes ❑ No Remarks: Field Indicators of hydric soll NOT present. HYDROLOGY Wetland Hydrology Indicators: Primary indicators (minimum of one required: check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (A1) ❑ Water-Stained Leaves (69) ❑ Water-Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,4A, and 413) O Saturation (A3) ❑ Sall Crust (B11) O Drainage Patterns (1310) ❑ Water Marks (B1) ❑ Aquatic Invertebrates (1313) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (B2) ❑ Hydrogen Sulfide Odor (Cl) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (133) ❑ Oxidized Rhizospheres along Living Roots (0) ❑ Geomorphk: Position (62) ❑ Algal Mat or Crust (B4) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquilard (D3) ❑ Iron Deposits (135) ❑ Recent Iron Reduction In Tilled Soils (C6) ❑ FAG-Neutral Test (D5) ❑ Surface Soil Cracks (B6) ❑ Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (DO) (LRR A) ❑ Inundation Visible on Aerial Imagery (87) ❑ Other (Explain In Remarks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (88) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (inches): Saturation Present? Yes No ® Depth (inches): Wetland Hydrology Present? Yes O No (Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), if available: Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Wesiam Mountains, Valley, and Coast - interim Version WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Site: Wyncrest Clty/County: King Sampling Date: 07 DEC 10 Appllcanl/Owner. Slate: WA Sampling Point: SPB 72 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Aldenvood gravelly sandy loam NWI classification: Are climatic / hydrologic conditions on the site typical for this time of year? Yes I@ No ❑ (If no, explain in Remarks.) Are Vegetation Soil Or Hydrology significantly disturbed? Are `Normal Circumstances" present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transacts, Important features, etc. Hydrophytic Vegetation Present? Yes 0 No ❑ Hydrtc Soil Present? Yes R No ❑ Is the Sampling Area within a Wetiand? Yes I@ No ❑ Wetland Hydrology Present? Yes ® No ❑ Remarks: VEGETATION - Use scientific names of plants Tree Stratum (Plot Size: 15 toot radius) Absolute Dominant Indicator Cover Sped $Mtus Test Worksheet: 1. Alnus rubra 20 yes FAC Number of Dominant Species That Are 2 OBL, FACW, or FAC: 2 (A) 3. Total Number of Dominant Species Across 2 {B} 4 All Strata: 20 = Total Cover Percent of Dominant Species That Are OBL, FACW, or FAC: 100 (A/B) 5,,~1irlglShrub Stratum (Plot Size: 15 foot radius) Prevalence Index worksheet: 6. Total % Cover of: Multiply by 7• OBL species x1 = 8. FACW species x2 = 9, FAC species x3 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species X5= 10. Phalaris arundinacea 100 yes FACW Column Totals: (A) (B) 11. Prevalence Index = B/A = 12. Hydrophytic Vegetation Indicators: 13. YES Dominance Test Is >50% 14. YES Prevalence Index Is <3.0' 15. NO Morphological Adaptations' (Provide supporting data In 16 Remarks or on a separate sheet) 17. NO Weiland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of h ydric soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: } 1 2. = Total Cover Hydrophytic Vegetation % Bare Ground in Herb Stratum Present? Yes ® No ❑ Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sam ll Point: SPB•72 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (Moist) % Type' Loc2 Texture Remarks 0.8 10YR 212 100 gsl 8-18 10YR 212 05 10YR 418. 5 C M gsl 'Type: C= Concentration, D=Depletlon, RM=Reduced Matrix, CS=Covered or Coaled Sand Grains. 'Location: PL=Pore Lining, M=Matrix Hydrlc Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydrlc Soils3: ❑ Hlslosol(A1) ❑ Sandy Redox (85) [1 2 cm Muck (A10) ❑ Histic Eplpedon (A2) ❑ Stripped Matrix (86) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (Explain in Remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (A11) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (A12) ® Redox Dark Surface (F6) Depleted Dark Surface (F7) 3Indicators of hydrophytic vegetation and wetland ❑ Sandy Mucky Mineral (S1) ❑ hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (84) ❑ Redox Depressions (F8) problematic. Restrictive Layer (if present): Type: Depth (Inches): Hydrlc Soils Present? Yes ® No ❑ Remarks: Field Indicators of hydric soil present HYDROLOGY Welland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stalned Leaves (89) ❑ Water-Stained Leaves (139) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B) (MLRA 1, 2,41A, and 4B) ® Saturation (A3) ❑ Salt Crust (811) ❑ Drainage Patterns (1310) ❑ Water Marks (137) [I Aquatic Invertebrates (1313) [1 Dry-Season Water Table (C2) ❑ Sediment Deposits (82) ❑ Hydrogen Sulfide Odor (01) ❑ Saturation Visible on Aerial imagery (Cg) ❑ Drift Deposits (83) ❑ Oxidized Rhizospheres along Living Roots (03) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (84) ❑ Presence of Reduced Iron (C4) ❑ Shallow Aquitard (D3) ❑ Iron Deposits (85) ❑ Recent Iron Reduction in Tilled Soils (C6) O FAC-Neutral Test (D5) ❑ Surface Soil Cracks (136) ❑ Stunted or Stresses Plants (DI) (LRR A) ❑ Raised Ant Mounds ((36) (LRR A) ❑ Inundation Visible on Aerial Imagery (87) ❑ Other (Explain in Remarks) ❑ Frost-Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (138) Field Observations: Surface Water Present? Yes ❑ No & Depth (inches): Water Table Present? Yes ❑ No ® Depth (Inches): Saturation Present? Yes ® No [3 Depth (inches): 8 Wetland Hydrology Present? Yes ® Na ❑ (Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), If available: Remarks: Soil appears to drain poorly following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - interim Version WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 Applicant/Owner. State: WA Sampling Point: SPB 78 Invesligator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hlllslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are climatic I hydrologic conditions on the site typical for this time of year? Yes ® No ❑ (If no, explain In Remarks.) Are Vegetation D, Soil Or Hydrology D, significantly disturbed? Are `Normal Circumstances' present? Yes ® No ❑ Are Vegetation Soil Or Hydrology naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. Hydrophytlc Vegetation Present? Yes ❑ No Hyddc Soil Present? Yes ❑ No ® Is the Sampling Area within a Wetland? Yes D jNo U Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants Tree Stratum (Plot Size; 15 toot radius) Absolute Dominant Indicator % Cover Specie &2 Slatus Dominance Test Worksheet: 1. Number of Dominant Species That Are 2. OBL, FACW, or FAC: 0 (A) 3. Total Number of Dominant Species Across 4. All Strata: 3 (B) = Total Cover Percent of Dominant Species That Are 0 (A(B) Sapling§11rub Stratum (Plot Size: 15 foot radius) OBL, FACW, or FAC: 5. Cyllsus scoparlus 35 yes FACU Prevalence Index worksheet: 8. Rubus procera 10 FACU Total % Cover of, MLLIWYJ14 7. OBL species x1 = 8. FACW species x2 = 9. FAC species x3 = 45 = Total Cover FACU species x4 = Herb Stratum {Plot Size: 15 foot radius) UPL species x5 = 10. Dactylis glomerata 50 yes FACU Column Totals: (A) (B) It. Pleridlum apuillum 25 yes FACU Prevalence Index = BIA = 12. Festuca arundinacea 10 FAC Hydrophytlc Vegetation Indicators: 13, Holcus lanatue 5 FAC NO Dominance Test Is >50% 14. Pon spp. 10 NO Prevalence Index Is 53.01 15. Morphological Adaptations' (Provide supporting data in 18. NO Remarks or on a separate sheet) 17. NO Welland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'Indicators of hyddc soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vine Stratum (Plot Size: } 1 2. = Total Cover Hydrophytic Vegetation % Bare Ground In Herb Stratum Present? Yes ❑ No Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncrest SOIL Sampling Paint: SPB-78 Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of indicators.) Depth Matrix Redox Features (Inches) Color (moist) % Color (Moist) % Type' Loc? Texture Remarks 016 10YR 312 100 OsI 6-20 10YR 413 100 Osi 'Type: C= Concentration, D=Depletion, RM=Reduced Matrix, CS =Covered or Coated Sand Grains. Location: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils: ❑ Histosol (Al) ❑ Sandy Redox (S5) O 2 cm Muck (A10) ❑ Hislic Epipedon (A2) ❑ Stripped Matrix (S6) O Red Parent Material (TF2) ❑ Black Hislic (A3) ❑ Loamy Mucky Mineral (Ft) (except MLRA 1) ❑ Other (Explain in Remarks) ❑ Hydrogen Sulfide (A4) O Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (F3) . ❑ Thick Dark Surface (A12) O Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) O Depleted Dark Surface (F7) aindicalors of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or O Sandy Gleyed Matrix (S4) ❑ Redox Depressions (FS) problematic, Restrictive Layer (if present): Type: Depth (Inches): Hydric Soils Present? Yes ❑ No Remarks: Field indicators of hydric soil NOT present. f , HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) ❑ Surface Water (Al) ❑ Water-Stained Leaves (B9) ❑ WaterSlalned Leaves (B9) ❑ High Water Table (A2) (except MLRA 1, 2, 4A, and 4B) (MLRA 1, 2,4A, and 4B) ❑ Saturation (A3) ❑ Salt Crust (B11) ❑ Drainage Patterns (810) ❑ Water Marks (131) ❑ Aquatic Invertebrates (1313) O Dry-Season Water Table (C2) O Sediment Deposits (82) O Hydrogen Sulfide Odor (CI) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (63) ❑ Oxidized Rhizospheres along Living Roots (0) ❑ Geomorphic Position (D2) ❑ Algal Mat or Crust (B4) ❑ Presence of Reduced Iron (C4) D Shallow Aquitard (D3) ❑ Iron Deposits (B5) ❑ Recent Iron Reduction in Tilled Soils (C6) O FAC-Neutral Test (D5) O Surface Soil Cracks (BG) O Stunted or Stresses Plants (D1) (LRR A) ❑ Raised Ant Mounds (1)(1) (LRR A) ❑ Inundation Visible on Aerial Imagery (137) ❑ Other (Explain In Remarks) O Frost-Heave Hummocks (137) ❑ Sparsely Vegetated Concave Surface (BB) Field Observations: Surface Water Present? Yes ❑ No ® Depth (inches): Water Table Present? Yes ❑ No ® Depth (Inches): Saturation Present? Yes ❑ No ® Depth (Inches): Wetland Hydrology Present? Yes ❑ No (Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous Inspections), If available: i Remarks: Soil appears to drain moderately well following seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - interim Version i WETLAND DETERMINATION DATA FORM - Western Mountains, Valleys, and Coast Region Project Site: Wyncrest City/County: King Sampling Date: 07 DEC 10 Applicant/Owner. State: WA Sampling Point: SPB 80 Investigator(s): Habitat Technologies Section, Township, Range: S02 T21 R4E Landform (hillslope, terrace, etc.): Local relief (concave, convex, none): Slope Subregion (LRR): Let: Long: Datum: Soil Map Unit Name: Alderwood gravelly sandy loam NWI classification: Are cllmatic / hydrologic conditions on the site typical for this Ume of year? Yes ® No ❑ (If no, explain in Remarks.) Are Vegetation Soil Or Hydrology Q, significantly disturbed? Are "Normal Circumstances" present? Yes ® No ❑ Are Vegetation Soli Or Hydrology naturally problematic? (if needed, explain any answers In Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ❑ No Hydric Sol[ Present? Yes ❑ No ® Is the Sampling Area within a Wetland? Yes a Welland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants Iii-e Stratum (Plot Size: 15 foot radius) Absolute Dominant Indicator % Co Specie ver ;i2 atus Dominance Test Worksheet: Number of Dominant Species That Are 2. OBL, FACW. or FAC: 0 (A) 3. Total Number of Dominant Species Across 4. All Strata: 4 (B} = Total Cover Percent of Dominant Species That Are Sa ling/Shrub Stratum (Plot Size: 15 foot radius) OBL, FACW, or FAC: 0 5. Cytisus scoparlus 35 yes FACU Prevalence Index worksheet: 6. Rubus ursinus 10 FACU Total % Cover of u[tl ply b : 7. OBL species x1= 8 FACW species x2 = 9. FAC species x3 = 45 = Total Cover FACU species x4 = Herb Stratum (Plot Size: 15 foot radius) UPL species x5 = 10. Dactyils glomerate 45 yes FACU Column Totals: (A) (B) 11. Pteridium aquillum 20 yes FACU Prevalence Index = B/A = 12. Cirslum arvensis 20 yes FACU Hydrophytic Vegeta0on Indicators: 13. Festuca arundlnacea 5 FAC NO Dominance Test is >60% 14. Poa spp. 10 NO Prevalence Index Is <3.0' 15. Morphological Adaptations' (Provide supporting data in 16. NO Remarks or on a separate sheet) 17. NO Wetland Non-Vascular Plants' 18. NO Problematic Hydrophytic Vegetation' (Explain) 19. 20. 'indicators of hydric soil and wetland hydrology must be present, 100 = Total Cover unless disturbed or problematic. Woody Vlne Stratum (Plot Size: ) 1 2. = Total Cover Hydrophytic Vegetation / Bare Ground in Herb Stratum Present? Yes ❑ No 131 Remarks: US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version Project Site: Wyncresl Sampling Point: SPB-80 SOIL . Profile Description: (Describe to the depth needed to document the Indicator or confirm the absence of Indicators.) Depth Matrix Redox Features `yo Type' Loc2 Texture Remarks (inches) Color (moist) % Color (Moist) 0-8 10YR 312 100 get 840 10YR 413 100 gsl 'Type: C- Concentratlon, D=Depletlon, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Locat1on: PL=Pore Lining, M=Matrix Hydric toll Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils': ❑ Sandy Redox (S5) ❑ 2 cm Muck (Al 0) ❑ Hlslosol (Al) [I Histic Epipedon (A2) ❑ - Stripped Matrix (S6) [3 Red Parent Material (TF2) ❑ Black HisUc (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (Explain in Remarks) [3 Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ Depleted Below Dark Surface (Al 1) ❑ Depleted Matrix (0). k Dark Surface (A12) ❑ Redox Dark Surface (FB) ❑ ThIc Depleted Dark Surface (F7 3indicators of hydrophytic vegetation and wetland ❑ Sandy Mucky Mineral (Si) De ❑ P ) hydrology must be present, unless disturbed or ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) problematic. Restrictive Layer (if present): Type: Depth (Inches): Hydric Solis Present? Yes ❑ No Remarks: Fleld indicators of hydric soil NOT present HYDROLOGY Wetland Hydrology Indicators: Primary indicators (minimum of one required; check all that apply) Secondary Indicators (2 or more required) (3 Surface Water(Al) ❑ Water-Stalned Leaves (89) ❑ Water-Stained Leaves (89) ❑ High Water Table (A2) (except MLRA 1, 2,4A, and 4B)_ (MLRA 1, 2,41A, and 4B) ❑ Saturation (A3) ❑ Sall Crust (1311) ❑ Drainage Patterns (BID) ❑ Water Marks (81) ❑ Aquatic Invertebrates (813) ❑ Dry-Season Water Table (C2) ❑ Sediment Deposits (82) ❑ Hydrogen Sulfide Odor (CI) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Drift Deposits (83) ❑ Oxidized Rhlzospheres along Living Roots (0) ❑ Geomorphic Posltlon (132) ❑ Algal Mat or Crust (84) Presence of Reduced Iron (C4) ❑ Shallow Aquitard (133) ❑ Iron Deposits (B5) ❑ Recent Iron Reduction In Tilled Solis (C6) ❑ FAC-Neutral Test (DS) ❑ Surface Solt Cracks (136) _ ❑ Stunted or Stresses Plants (DI) (LRR A) ❑ Raised Ant Mounds (DO) (LRR A} ❑ Inundation Visible on Aerial Imagery (87) ❑ Other (Pxptaln in Remarks) ❑ Frost Heave Hummocks (D7) ❑ Sparsely Vegetated Concave Surface (88) - Field Observations: Surface Water Present? Yes ❑ No S. Depth (Inches): Water Table Present? Yes ❑ No ® Depth {inches); Saturation Present? Yes ❑ No ® Depth (inches): Wetland Hydrology Present? Yes ❑ No ' (Includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerlat photos, previous Inspections), If available: Remarks: Soil appears to draln moderately well foiluMng seasonal storm events. US Army Corps of Engineers Western Mountains, Valley, and Coast - Interim Version s s i APPENDIX B WETLAND RATING FORMS i 27 10083 - 1 y a ~ i { 1 ~ B. v Wetland C FFF Stream A z < I £ F3 Wetland-13 J ; - 4 o f e , Field Ditches „ 1441 19 .sk n !J 1 t'p. yak A C S ti 7 t : yp~ Y 1 Sg s _ ~~Q~1s ~ r $ = p _ HABITAT Figure W1 N' R s TECHNOLOGIES .__t....... _ i d Forested. f Stream A " F ,r Emergent Field. Ditch % fie" ~s~ ~ i ' { ~ .».?-i Yy t v-; s! f ' r I HABITAT Figure 1iV2 x s TECHNOLOGIES y~~,ilti I e b~~ t 1 ' t 4 x ~ i tF t - Seasonally Flooded 1a L E I Seasonally Saturated; pp s. w k = ~t Stream A Seasonally Saturated i` _'j Seasonal) Flooded Field Ditch AL- »n r ~ "Rt HA IT T Figure W3 A s TECHNOLOGIES Wetland name or number WETLAND RATING FORM - WESTERN-WASHINGTON Version 2 - Updated July 2006 to increase accuracy and reproducibility among users Updated Oct 2008 with the new WDFW definitions for priority habitats Name of wetland (if known): Wtc~t R`L Date of site visit: Ex 10 Rated by w~ Trained by Ecology? YesAo_ Date of training SEC: TWNSHP: RNGE:t✓ Is S/T/R in Appendix D? Yes No Map of wetland unit: Figure k 1 Estimated size SUMMARY OF RATING Category based on FUNCTIONS provided by wetland I II III IV Score for Water Quality Functions Category I = Score >=70 Category II = Seere3.1~-59-, Score for Hydrologic Functions ~ 0 Categ~IIl -Score 30-5~ Score for Habitat Functions Category IV =S core-;30 TOTAL score for Functions Category based on SPECIAL CHARACTERISTICS of wetland I II Does not Apply i Final Category (choose the "highest" category from above) Summary of basic information about the wetland unit Estuarine De ressional Natural Heritage Wetland Riverine Bo Lake-fringe Mature Forest Sloe Old Growth Forest `Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple HGM classes resent Wetland Rating Form- western Washington 1 August 2004 version 2 To be used with.Ecology Publication 04-06-023 _ Wetland name or number Does the wetland unit being rated meet any of the criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland. ox~ s,g~ s4 1~ r~z F ~x •~1 ' o rtA E' yT _ ,~s+J Qr~~34~!'b ~ r 3 ~ i - ~ :i[t SPL Has the wetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species (TIE species)? For the purposes of this rating system, "documented" means the wetland is on the appropriate state or federal database. SP2. Has the wetland unit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system, "documented" means the wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category I Natural Heritage Wetlands see . 19 of data form . SP3. Does the wetland unit contain individuals of Priority species listed by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To complete the next art o the data sheet you will need to determine the Hydrogeomor hic Class of the wetland being rated. The hydrogeomorphic classification groups wetlands into those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. See p.'24 for more detailed instructions on classifying wetlands. Wetland Rating Form - western Washington 2 August 2004 version 2 Updated with now WDFW definidons'Oct. 2008 Wetland name or number Classification of Wetland Units in Western Washington f Y r -•s... fir. ~ •++r - s.~. f-~'t Y S f -';x~. z7. T >fi •f+ $ wt( Fy~~i.~~?_ ~ i- ~i t .ZF;Y X23 {.3 -✓ira a\ i .~*t °EL t `f r i C' -e s t #e oI ~fYct _ yuj t Q = j] ~Sj~u~t?~ r' .~••-"+q".t~7 Y.z ~Z n. ':y ~}~~~~}i~~F~i S 1~"3.f aS/.y~~ _4 fr;+~5~trl~fg °~••4V, rfiSruS. _.1} ~.r7wi+Fti Yj1 3`j-y'a ~N'~.~5<~rh= ~.~~'i:fi ~ - ,t,r j~t rY ~ _'S~~,'_ +,~.',a _'C~ "~ti. 3~,~<~~?+ - 1} zf y+K ry$ or s.- § S`;5! a ^f ~r i''• ° i= _ •S ti a"2a q a~x-~~ k is r 3n?-~ e -flig water levels in the entire unit usually controlled by tides (i.e. except during floods)? O go to 2 YES - the wetland class is Tidal Fringe N L If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? YES - Freshwater Tidal Fringe NO - Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is rated as an Estuarine wetland. Wetlands that were called estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification, Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the term "Estuarine" wetland is kept. Please note, however, that the characteristics that define Category I and H estuarine wetlands have changed (see p. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. dwater and surface water runoff are NOT sources of'water to the unit. L0,171 go to 3 YES - The wetland class is Flats If your wetland can be classified as a "Flats" wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet both of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) at least 20 acres (8 ha) in size; At least 30% of the open water area is deeper than 6.6 ft (2 m)? NO - o to 4 YES - The wetland class is Lake-fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? The wetland is on a slope (slope can be very gradual), The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these type ofwetlands except occasionally in very small and shallow depressions or behind hammocks (depressions are usually <3ft diameter and.less than 1 foot deep). NO - do to 5 YES - The wetland class is Slope Wetland Rating Form - westernWashington 3 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number 5. Does the entire wetland unit meet all of the following criteria? The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river The overbank flooding occurs at least once every two years. NOTE: The riverine unit can contain depressions that are filled ivith water when the river is notJlooding. N - go to 6 YES - The wetland class is Riverine 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year. This means that any outlet, ifpresent, is higher than the in r r of the wetland. to/ go to 7 YES - The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding. The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious I outlet. N -go to 8 YES - The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM clases. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within your wetland. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the class listed in column 2 is less than 10% of the unit; classify the wetland' using the class that represents more than 90% of the total area. W "A' Eli Slo g + Riverine Riverine Slo e + •essi - e ressrona Slope + Lake-fringe Lake-fringe Depressional + Riverine along stream within boundary Depressional De ressional + Lake-fringe De ressional Salt Water Tidal Fringe and any other class of freshwater Treat as ESTUARINE under wetland wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating Form- western Washington.. • ' 4 August 2004 version 2 Updated with new WDFW definition's Oct. 2Q08 Wetland name or number ' ail" ~ +ca t, -a tit r a c ,xi,-'f>' D t Sax , ~y F~ >F fix„ xcyY.r~#x E~ +Sw ~ ~ iepressiona~nda~sxetlnds § , . t.,~ u , ffif} Ponts~ ; f + r- a~ ,F ! 4. " 7 # ti lht I a S !s: L } 4~ Srlt~ , n n~ ~ jr ! ?x t i f 7fi ' Q' tQt~~di(3otg`~tPs Wetanc~Ti11Ld t0 (P!liXyi scoF :°~`sR't s~. 4j'S:'~4 R •S`-~~l;:~t i+ 1<~t1 ~ r~ i, ~ ~,}t t i~ ? 3.~~ ~ 1 t ~ ~ a s i ~3, t `fi:~i' ' i ~ K~ ii~l;{~f~.~~#:~~ITII T~ W~~~` Usl ~'l~til~,~~ -{y.~~~tk~:; ~~z`I~ty~~s~ S.. ~ ~~v;i:~,.~r'Kr F; Ytl ',:r ~ ~?t~tr..? D D 1. Does the wetland unit have the potential to improve water quality? (eep.38):. D 1.1 Characteristics of surface water flows out of the wetland: Figura Unit is a depression with no surface water leaving it (no outlet) posit is = 3 D Unit has an intermittently flowing, OR highly constricted permanently flowing outlet ointt = Unit has an unconstricted, or slightly constricted, surface outlet (pertnanently flowing) points = 1 Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is not permanently floFVing treat unit as "interinittendy f lotivinlg Provide photoor drawing S 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use ARCS definitions) (,•°1 D YES po' = C.J NO oint = D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or f rdin_class) Figure; Wetland has persistent, ungrazed, vegetation > = 95% of area ts~ D Wetland has persistent, ungrazed, vegetation > = 1/2 of area points = 3 t° Wetland has persistent, ungrazed vegetation > =1/10 of area points = 1 Wetland has persistent, ungrazed vegetation <1/10 of area points = 0 Ma :ofCowardin ve etallon classes 131.4 Characteristics of seasonal ponding or inundation. Figure YhIs is the area of the 3vetland unit that is ponded for at least 2 months, but dries out sometime during the year: Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 yrs. Area seasonally ponded is > t/ total area of wetland points = 4 Area seasonally ponded is > total area of wetland oints = 2 Area seasonally ponded is total area of wetland pomt~ s Ma . of:H ro eriods D Total for D 1 Add the points in the boxes above I I D D 2. Does the wetland unit have the opportunity to improve water quality? (seep. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants conning from several sources, but any single source would qualify as opportunity. - Grazing in the wetland or within 150 ft - Untreated stormwater discharges to wetland - Tilled fields or orchards within 150 ft of wetland - A stream or culvert discharges into wetland that drains developed areas, residential areas, farmed fields, roads, or clear-cut logging - Residential, urban areas, golf courses are within 150 ft of wetland multiplier Wetland is fed by groundwater high i hp,orus or nitrogen - Other YES multiplier is 2 NO multi tier i D TOTAL - Water Quality unctions Multiply the score from DI by D2 Add score to table on p. I Wetland Rating Form - western Washington.' 5 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number 3 t s. t. Palnt$ xesslQn l and 0Ufs ~'0 _#d a r1~~1jj~//'!~~ t F s e r v ? ..-ra -)s`t ia.i~.lS~ O • +fY tr}~1 ~Ollt~~ $CQIC 1` = L Gi F,UNG~i'IOiNS ' fn~l~aftirs tha~th~4uue~lat~dumt functzops to S - x -Y L - hY~i f'Y32 xM f b"3 • G; SFr 1 ~S i'ce' bO7C +r1 i. < Lt.- <<cs r4 iP: r 1 f tv ~ ~ t frl t ~ '.1 I . D 3. Does the wetland unit have the potential to reduce flooding and erosion? { (see p.46) D D 3.1 Characteristics of surface water flows out of the wetland unit Unit is a depression with no surface water leaving it (no outlet) points = 4 Unit has an intermittently flowing, OR highly constricted permanently flowing outlet pot s = Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface out ow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch is nol permanentlyfJowing treat unit as "intermittentlyftowing Unit has an unconstricted, or slightly constricted, surface outlet (Permanently owin points= 0 D D 3.2 Depth of storage during wet periods Estimate the height ofponding above the bottom of the outlet. For units with no outlet measure front the surface of permanent water or deepest part (if day). Marks of ponding are 3 ft or more above the surface or bottom of outlet is = 7 The wetland is a "headwater" wetland" !PO;- Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 Unit is flat (yes to Q. 2 or Q. 7 on key) but has small depressions on the surface that trap water points = 1 Marks of ondin less than 0.5 ft points = 0 D D 3.3 Contribution of wetland unit to storage in the watershed Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of unit The area of the basin is 10 to 100 tunes the area of the unit ~ts= Th e area of the basin is more than 100 times the area of the unit points = 0 ` Entire unit is in the FLATS class points = 5 D Total for D 3 Add the points in the boxes above t r~ 1 D D 4. Does the wetland unit have the opportunity to reduce flooding and erosion? (seep. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect downstream property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coming into the wetland is controlled by a structure such as flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opportunity apply. Wetland is in a headwater of a river or stream that has flooding problems Welland drains to a river or stream that has flooding problems - Wetland has no outlet and impounds surface runoff water that might otherwise multiplier flow into a river or stream that has flooding problems ~~11 thzf"'` G- S multi li s NO multi liar is 1 D OTAL - Hydrologic Functions Multiply the score from D 3 by D 4 L Add score to table on p. 1 I (--J ashington 6 August 2004 Wetland Rating Form -western Washington,-- version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number Ir/ - < f3~: 'Y` ;i i 4 .,53-?, { t:: rSf ' t rT: t - 1 - {41 • i:t M ~ jI#~~.17!~ ;7/T~}~(y/~/f fV~lY ``vK~ t[//~y,,l[~~ij'ix~~~ ~4~~i~~~~►~~i t ~5~r y~}if~~ Eij # ~3;tk~lTy~r~~Ql+F~R [ .3 r f1. z` ~a' 3 `aify'T~4F y rya i~' ~`S~1' ;_wt aSF- ?j tN/' ~~SJ7'1 4 C I .s Qn) het Id TSt~= 5sI0 t0l,E. uuiYf t;t ~ is=t~ avid npo thabit~t ,verbp~ :r H 1. Does the wetland unit have the potential to provide habitat for many species? H 1.1 Vegetation structure (seep. 72) Figure Check the types of vegetation classes present (as defined by Cowan din)- Size threshold for each class is % acre or more than 10% of the area if unit is smaller than 2.5 acres. Aquatic bed =,,mergent plants Scrub/shrub (areas where shrubs have >30% cover) Forested (areas where trees have >30%o cover) If the unit has a forested class check if- The forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the forested polygon Add the number of vegetation structures that qualo. Ifyou have: 4 structures or more points = 4 Map of.Cowardiri:vegett3tlonclasses.: 3 strictures points = 2 2 structures poi s = 1 1 structure pints = 0 H 1.2. Hydroperiods (seep. 73) Figure Check the types of water regimes (hydroperiods) present within the wetland. The ivater regime has to cover more than 10% of the wetland or'/ acre to count. (see text for descriptions of hydroperiods) Permanently flooded or inundated 4 or more types present points = 3 seasonally flooded or inundated 3 types present Occasionally flooded or inundated 2 types present oint-- Saturated only 1 type present points = 0 Permanently flowing stream or river in, or adjacent to, the wetland `L/S`easonally flowing stream in, or adjacent to, the wetland Lake fringe wetland = 2 points Freshwater tidal wetland = 2 points Mag of hydroperiods H 1.3. Richness of Plant Species (seep. 75) Count the number of plant species in the wetland that cover at least 10 ft2. (different patches of the same species can be combined to meet the size threshold) You do not have to name the species. Do not include Eurasian Milfoil, reed canarygrass, purple loosestrife, Canar istle If you counted: > 19 species potnts = List species below if you want to: 5 -19 species points = 1 < 5 species points = 0 Total for page Wetland Rating Form - western Washington' 13 August 2004 version 2 Updated with new WDFW definitions Oct. 20.68. Wetland name or number. -H 1.4. Interspersion of habitats (seep. 76) Figure Decide from the diagrams below whether interspersion between Cowardin vegetation classes (described in H 1. 1), or the classes and unvegetated areas (can include open water or nmdflats) is high, medium, low, or none. ry .o~ one = 0 'points Low = 1 point Moderate = 2 points (riparian braided channels] High = 3 points - NOTE: If you have four or more. classes or three vegetation classes and. open water the rating is always "hi h". se hA of:Cawardirtvegetation=classes H 1.5. Special Habitat Features: (seep. 77) Check the habitat features that are present in the wetland. The number of checks is the number ofpoints youput into the next column. Large, downed, woody debris within the wetland (>4in. diameter and 6 ft long). Standing snags (diameter at the bottom > 4 inches) in the wetland Undercut banks are present for at least 6.6 ft (2m) and/or overhanging vegetation extends at least 3.3 ft (lm) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft (10m) Stable steep banks of fine material that might be used by beaver or muskrat for denning (>30degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least % acre of thin-stemmed persistent vegetation or woody branches are present in areas that are permanently or seasonally inundated. (structures for egg-laying by amphibians) Invasive plants cover less than 25% of the wetland area in each stratum of plants O NOTE.• The 20% stated in early printings of the manual on page 78 is an error. H 1, TOTAL Score - potential for providing habitat 13 1 Add the scores rom H1.1, H1.2, H1.3, H1.4, HI.S Comments Wetland Rating Form- western Washington _ 14 August 2004 version 2 Updated with new WDFW definitions Oct. 200 8 Wetland name or number H 2. Does the wetland unit have the opportunity to provide habitat for many species? H 2.1 Buffers (seep. 80) Figure Choose the description that best represents condition of buffer of wetland unit. The highest scoring criterion that applies to the wetland is to be used in the rating. See textfor definition of "undisturbed. " 100 m (330ft) of relatively undisturbed vegetated areas, rocky areas, or open water >95% of circumference. No structures are within the undisturbed part of buffer. (relatively undisturbed also means no-grazing, no landscaping, no daily human use) Points = 5 - 100 in (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 50% circumference. Points = 4 - 50 in (170ft) of relatively undisturbed vegetated areas, rocky areas, or open water >95% circumference. Points = 4 - 100 m (330ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 25% circumference, . Points = 3 - 50 m (170ft) of relatively undisturbed vegetated areas, rocky areas, or open water for > 50% circumference. Points = 3 If buffer does not meet any of the criteria above - No paved areas (except paved trails) or buildings within 25 in (80ft) of we > 95 circumference. Light to moderate grazing, or lawns are OK. Points = 2 - No paved areas or buildings within 50m of wetland for >50% circumfe ee. Light to moderate grazing, or lawns are OK. Points = 2 - Heavy grazing in buffer. Points =1 - Vegetated buffers are <2m wide (6.6ft) for more than 95% of the circumference (e.g. tilled fields, paving, basalt bedrock extend to edge of wetland Points = 0. - Buffer does not meet any of the criteria above. Points =1 Aeriathoto:,showin buffers H 2.2 Corridors and Connections (seep. 81) H 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft wide, has at least 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size? (dams in riparian corridors, heavily used gravel roads, paved roads, are considered breaks in the con1dor). YES = 4 points (go to H2.3) NO = go to H 2.2.2 H 2.2.2 Is the wetland part of a relatively undisturbed and unbroken'vegetated corridor (either riparian or upland) that is at least 50ft wide, has at least 30% cover of shrubs or forest, and connects to estuaries, other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake-fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (go to H2.3) NO = H 2.2.3 H 2.2.3 Is the wetland: within 5 mi (81am) of a brackish or salt water estuary OR within 3 mi of a large field or pasture (>40 acres) OR wit ' aloe greater than 20 acres? S = 1 point) NO = 0 points Total for page Wetland Rating Form - western Washington 15 August 2004 version 2 Updated with new WDFW definitions O,ct. 2008 Wetland name or number H 2.3 Near or adjacent to other priority habitats listed by WDFW (see nesv and complete descriptions of WDFWprlor7ty habitats, and the counties in which they car: be found, in thePHSreport http://►vdfiv.)va.aovlliab/yhstivi.htm) Which of the following priority habitats are within 33011(100m) of the wetland unit? NOTE: the connections do not have to be relatively undishtrbed Aspen Stands: Pure or mixed stands of aspen greater than 0.4 ha (1 acre). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report p. 152). Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. Old-growth/Mature forests: (Old-Growth west of Cascade crest) Stands of at least 2 tree species, forming a multi-layered canopy with occasional small openings; with at least 20 trees/ha (8 trees/acre) > 81 cm (32 in) dbh or > 200 years of age. (Mature forests) Stands with average diameters exceeding 53 ctn (21 in) dbh; crown cover may be less that 100%; crown cover may be less that 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80 - 200 years old west of the Cascade crest. Oregon white Oak: Woodlands Stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (fidl descriptions in WDFWPHS report p. 158). 12ipartan: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161). Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report: pp. 167-169 and glossary in Appendix A). Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. Cliffs: Greater than 7.6 in (25 ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock rubble ranging in average size 0.15 - 2.0 in (0.5 - 6.5 ft), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 51 cm (20 in) in western Washington and are > 2 in (6.5 ft) in height. Priority logs are > 30 cm (12 in) in diameter at the largest end, and > 6 in (20 ft) long. If wetland has 3 or more priority habitats = 4 points If wetland has 2 priority habitats 3 points If wetland has 1 priority habitat =1 point . No habitats = 0 points O Note: All vegetated wetlands are by definition a priority habitat but are not inchsded in this list. Meat-by wetlands are addressed in question H2.4 Wetland Rating Form- western Washington 16 August 2004 version 2 Updated with new WDFW definitions Oct. 20.0.8.. Wetland name or number H 2.4 Wetland Landscape (choose the one description of the landscape around the wetland that best fits) (seep. 84) There are at least 3 other wetlands within V2 mile, and the connections between them are relatively undisturbed (light grazing between wetlands OK, as is lake shore with some boating, but connections should NOT be bisected by paved roads, fill, fields, or other development. points = 5 The wetland is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands within 1/2 mile points = 5 There are at least 3 other wetlands within'/ mile, BUT the connections between the disturbed rots = 3 The wetland is Lake-fringe on a lake with disturbance and there are 3 other lake- e wetland within %z mile points = 3 There is at least 1 wetland within % mile. points = 2 There are no wetlands within Y2 mile. points = 0 H 2. TOTAL Score - opportunity for providing habitat Add the scores from H2. 1,H2.2, H2.3, H2.4 TOTAL for H 1 from page 14 Total Score for Habitat Functions add the points for H 1, H 2 and record the result on .1 _t Wetland Rating Form - western Washington 17 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number WETLAND RATING FORM - WESTERN WASHINGTON Version 2 - Updated July 2006 to increase accuracy and reproducibility among users Updated Oct 20(08 with the new WDFW definitions for priority habitats Name of wetland 'f known): Date of site visit: + . fi Rated b l u, Inc Trained by Ecology9 Yes' No_ Date of training j±! b Y SEC: ?,,,-TWNSHP: 2j RN E: I.% Is S/T/R in Appendix D? Yes_ No y ~IU~ Map of wetland unit: Figure (Estimated size Sup Oe SUMMARY OF RATING Category based on FUNCT ONS provided by wetland 7Iy I II IIi Score for Water Quality Functions Category I =Score >=70 Category II = Ssnnre 51-69 Score for Hydrologic Functions Category III •ore 3 =50 Score for Habitat Functions Category IV TOTAL score for Functions Category based on SPECIAL CHARACTERISTICS of wetland I H Does not Apply Final Category (choose the "highest" category from above) Summa of basic information about the wetland unit ll MO. ~ vim' Estuarine De ressional Natural Heritage Wetland Riverine Bo Lake-fringe Mature Forest Slope Old Growth Forest Flats Coastal Lagoon Freshwater Tidal Interdunal None of the above Check if unit has multiple HGM classes resent Wetland Rating Form - western Washington: 1. August 2004 version 2 To be used with Ecology Publication 04-06-025 Wetland name or number Does the wetland unit being rated meet any of the. criteria below? If you answer YES to any of the questions below you will need to protect the wetland according to the regulations regarding the special characteristics found in the wetland: ~3 - '~^.F~~'tt`~ t. ' t het . eh r 25 SP1. Has fire ►vetland unit been documented as a habitat for any Federally listed Threatened or Endangered animal or plant species-(TIE species)? For the purposes of this rating system, "documented" means the wetland is on the a ro riate state or federal database. SP2. Has the wetland tinit been documented as habitat for any State listed Threatened or Endangered animal species? For the purposes of this rating system, "documented" means the wetland is on the appropriate state database. Note: Wetlands with State listed plant species are categorized as Category I Natural Heritage Wetlands see . 19 of data form). SP3. Does the wetland unit contain individuals of Priority species listed by the WDFW for the state? SP4. Does the wetland unit have a local significance in addition to its functions? For example, the wetland has been identified in the Shoreline Master Program, the Critical Areas Ordinance, or in a local management plan as having special significance. To complete the next part oLthe data sheet you will need to determine the Hydrogeomorphic Class of the wetland being rated. The hydrogeomorphic classification groups wetlands into those that function in similar ways. This simplifies the questions needed to answer how well the wetland functions. The Hydrogeomorphic Class of a wetland can be determined using the key below. See p.'24 for more detailed instructions on classifying wetlands. Wetland Rating Form - western Washington 2 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number Classiflcation of Wetland Units in Western Washington s' C~?n If- t~ !t `f rz ~sn i J r4:t t ~2 ~ `~,-~'e ~:t"4i~~ ~i~ •.'~"F,~;rfF~ r`'f~~ fa :~z?s 1. th water levels in the entire unit usually controlled by tides (i.e. except during floods)? - go to 2 YES - the wetland class is Tidal Fringe If yes, is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? YES - Freshwater Tidal Fringe NO - Saltwater Tidal Fringe (Estuarine) If your wetland can be classified as a Freshwater Tidal Fringe rise the forms for Riverine wetlands. If it is Saltwater Tidal Fringe. it is rated as an Estuarine wetland Wetlands that were called estuarine in the first and second editions of the rating system are called Salt Water Tidal Fringe in the Hydrogeomorphic Classification. Estuarine wetlands were categorized separately in the earlier editions, and this separation is being kept in this revision. To maintain consistency between editions, the term "Estuarine" wetland is kept. Please note, however, that the characteristics that define Category I and II estuarine wetlands have changed (see p. 2. The ntire wetland unit is flat and precipitation is the only source (>90%) of water to it. ro dwater and surface water runoff are NOT sources of water to the unit. -go to 3 YES - The wetland class is Flats If your wetland can be classified as a "Flats" wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet both of the following criteria? The vegetated part of the wetland is on the shores of a body of permanent open water (without any vegetation on the surface) at least 20 acres (8 ha) in size; At least 30% of the open water area is deeper than 6.6 ft (2 m)? O go to 4 YES - The wetland class is Lake-fringe (Lacustrine Fringe) 4. oes the entire wetland unit meet all of the following criteria? The wetland is on a slope (slope can be very gradual), The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks. The water leaves the wetland without being impounded? NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3f1 diameter and less than I foot deep). NO - go to 5 YES - The wetland class is Slope Wetland Rating Form - western Washington:,,, - : _ 3 August 2004 version 2 Updated with new WDFW defusitions'ONt. 2008 Wetland name or number 5. Does the entire wetland unit meet all of the following criteria? The unit is in a valley, or stream channel, where it gets inundated by overbank flooding fiom that stream or river The overbank flooding occurs at least once every two years. NOTE: The riverine unit can contain depressions that are filled with water when the river is of flooding. NO go to 6 YES - The wetland class is Riverine a a a entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year. This means that any outlet, if present, is higher that? the ter r of the wetland. O go to 7 YES - The wetland class is Depressional I entire wetland unit located in a very flat area with no obvious depression and no overbank floodin g. The unit does not pond surface water more than a few inches. The unit seems to be ma' tained by high groundwater in the area. The wetland may be ditched, but has no obvious n 1 outlet. O go to 8 YES - The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM clases. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within your wetland. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. -0 MEMO e Riverine Slope + De ressio a resgitnna_l- Slope + Lake-fringe La e- ° e Depressional + Riverine along stream within boundary Depressional De ressional + Lake-fringe De ressional Salt Water Tidal Fringe and any other class of freshwater Treat as ESTUARINE under wetland wetlands with special characteristics If you are unable still to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland Rating Form - western Washington 4 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number a 7-~ :„r•,-~ - wry.. ✓ # -~.-E ~~t is s.t ~ irr t~l.~ s ~..U, ga3fq (a Y. '.r~;:ei vsY.4~..5:• S't.c. ♦ S~'. - ~ + z r: ,a'1~~' - i»~ -i~~ ti~ eX - •c ~a ~ ~ k}`~ ~ D{ " le ~~;,ii~na~~ j~~,~~tl{a~'~s• , ey`, s y~~ } . ~ ~ t, ? ~ t~ , ~ s ~5,, ~ S u 4 ,tli4s ,.~t~,~~~ Y~~1 ~rt~~Z~1t~,11t1f~~t1C~~~I~ t0~`' { {p~1,YF~ sct~[er~r~~ r I r ~ u l E 'x7.' 'Y f +Z ~ ic+• 7F y ~ as # } - t ti 3,., i 53~t`it~ 1t1 ~ ~3r-zri~T y~~■~-: tz'-•-~ F~~ ~:I~ ~,~~~a~Y~I~E~ ~F' 1ii r2C~sf'iz } v lv-,} ~t:t 'Y 34 5't. { ,+i!1... It 44 '7~'t. cam. 7 `,3r y3 a~VS~ ._,7q ey i 4~~:"J, _4ti i_..k'~5-..~Srxi.;i'~x~,~Sy~,.iv~ly3. t.?'•~. ~',rC:. .{.t+~x..S~s l:l 't5cc~_s'+~~h D D 1. Does the wetland unit have the potential to improve water quality? :(see p.38).. D 1.1 Characteristics of surface water flows out of the wetland: Figure:_ Unit is a depression with no surface water leaving it (no outlet) poi 3 D Unit has an intermittently flowing, OR highly constricted permanently flowing outle Dints Unit has an unconstdcted, or slightly constricted, surface outlet (permanently flowing) points = 1 Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (lf ditch is not permanently flowing treat unit as "intermittently flowing Provide h:oto:or dravring S 1.2 The soil 2 inches below the surface (or duff layer) is clay or organic (use NRCS definitions) D YES points - NO is = D 1.3 Characteristics of persistent vegetation (emergent, shrub, and/or forest Cowardin class) Figure;^ nts _ 5~ i Wetland has persistent, ungrazed, vegetation > = 95% of area qnPC Wetland has persistent, ungrazed, vegetation > = 1/2 of area ~ Wetland has persistent, ungrazed vegetation > =1/10 of area points= 1 Wetland has persistent, ungrazed vegetation <1/10 of area points = 0 Ma 0`of Cowardin ve eWion classes - D1.4 Characteristics of seasonal ponding or inundation. Figue: This is the area of the wetland unit that is ponded for at least 2 months, but dries out sometime during the year: Do not count the area that is permanently ponded. Estimate area as the average condition 5 out of 10 yrs. Area seasonally ponded is > total area of wetland points = 4 Area seasonally ponded is > `/a total area of wetland oink. is = 2 O Area seasonally ponded is < total area of wetland... Ma :of H dro eriods Total for D 1 Add the points in the boxes above 11 1 D ,~so~o D D 2. Does the wetland unit have the opportunity to improve water quality? (seep. 44) Answer YES if you know or believe there are pollutants in groundwater or surface water coming into the wetland that would otherwise reduce water quality in streams, lakes or groundwater downgradient from the wetland. Note which of the following conditions provide the sources of pollutants. A unit may have pollutants corning from several sources, but any single source would qualify as opportunity. - Grazing in the wetland or within 150 ft - Untreated stormwater discharges to wetland - Tilled fields or orchards within 150 ft of wetland A stream or culvert discharges into wetland that drains developed areas, residential areas, armed fields, roads, or clear-cut logging Residential, urban.areas, golf courses are within 150 ft of wetland multiplier - Wetland is fed by groundwater high in phosphorus or nitrogen O er S ulti lien is 2 NO multiplier is 1 D TOTAL - Water Quality Functions Multiply the score from D1 by D2 1 -Add score to table on . 1 I Wetland Rating Form- western Washington. 5 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number Yre;ss~o~a~:.~nd-~a~ts~`WEtla~ds a. .`F 1~R 3 ~t 3 .__Z- .~i 3 r'% ~C• _ i ~ 1~. ; ~ tub i ~tt, ~ + rT>~ *f.r£ra r x L t 4 Z ;.4 Sri r SS_a t ~f' L ~,~-IYDI~QLC~C`~IG~Ft1L~C,;I'I;O~S ' Xndt~a~q#•~ .hat il3e~welland~t futlettons tfl< ~ t~ x~`°nIy i`~~(r~{ y,F. i t3 .-i x.~7 s;< r~r .F ~ -s~.c}!, Le G / S•e3 lq. kt ` ~ _ti-.~~t i ~ ea;i~ t~ i. '-3'sY f_ _ a: _ 2<3: _ .-,,__V t. ~.i ~`~~3 1.~'~_ ` r r Y die ~ .d t. s a~ de d D 3. Does the wetland unit have the potential to reduce flooding and erosion? (seep 46j` D D 3.1 Characteristics of surface water flows out of the wetland unit Unit is a depression with no surface water leaving it (no outlet) points = Unit has an intermittently flowing, OR highly constricted permanently flowing outlet pain s f_2-) Unit is a "flat" depression (Q. 7 on key), or in the Flats class, with permanent surface outflow and no obvious natural outlet and/or outlet is a man-made ditch points = 1 (If ditch Is not permanently flowing treat writ as "xinlermitlentlyflowing , Unit has an unconstricted, or slightly constricted, surface outlet (permanently flowing) points = 0 D D 3.2 Depth of storage during wet periods Estimate the helght ofponding above the bottom of the outlet. For units with no outlet measure from the sit face of pennanent water or deepest part fif dl y). Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 The wetland is a "headwater" wetland" = points = 5 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 Unit is flat (yes to Q. 2 or Q. 7 on key) but has small depressions on the surface that trap water oints = 1 Marks of ondin less than 0.5 ft oints = D D 3.3 Contribution of wetland unit to storage in the watershed Estimate the ratio of the area of upstream basin contributing staface water to the ivetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of unit of = The area of the basin is 10 to 100 times the area of the unit oints = The area of the basin is more than 100 times the area of the unit points = 0 Entire unit is in the FLATS class points = 5 D Total for D 3 Add the points in the boxes above { { D D 4. Does the wetland unit have the opportunity to reduce flooding and erosion? (seep. 49) Answer YES if the unit is in a location in the watershed where the flood storage, or reduction in water velocity, it provides helps protect downstream property and aquatic resources from flooding or excessive and/or erosive flows. Answer NO if the water coining into the wetland is controlled by a structure such as flood gate, tide gate, flap valve, reservoir etc. OR you estimate that more than 90% of the water in the wetland is from groundwater in areas where damaging groundwater flooding does not occur. Note which of the following indicators of opport;~tunity apply. Note is in a headwater of a river or stream that has flooding problems - Wetland drains to a river or stream that has flooding problems - Wetland has no outlet and impounds surface runoff water that might otherwise w into a river or stream that has flooding problems multiplier = Oth W. multi lier is 2 NO multiplier is 1 D TOTAL - Hydrologic Functions Multiply the score from D 3 by D 4 Add score to table on p. I Wetland Rating Form- western Washington..:' ' . 6 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number x kC:-i~'7M rSi fF.*'L,'~ 4Y•`H: it SY ...:;irY .,t, y ~ 4fFy~. r_y.~? f~ 't.a ~5i J[~ K '`IX R 'T~`Y 3]I ' .F 1 fF 'A•v~v°' lip , ' ~ rt..~F'~.i iv v ZS 7p~'} T Y ~r l~ 1Y[ ti -lS l } Y AA J p T~ 4t' .`r ;~.Q' ~,t~~Ca~~i~l~ ~t-n ~ ~.~~?._~~t P~~t.~~~~._.k' i~~(~rj . ar ~ ?tt t y, i~ I.r . ~~nf"'1'.:r.~Xd"1"'.z.:~.s.~ ;..5 r .r.s. w.1 1 Ste' rv.•_t .s 1 H 1. Does the wetland unit have the potential to provide habitat for many species? H 1.1 Ve eg tation structure (seep. 72) Ffgure'_ Check the types of vegetation classes present (as defined by Corvardin)- Size threshold for each class is Y4 acre or more than 10% of the area if unit is smaller than 2.5 acres. Aquatic bed /Emergent plants Scrub/shrub (areas where shrubs have >30% cover) je!!,Forested (areas where trees have >30% cover) If the unit has a forested class check if The forested class has 3 out of $ strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the forested polygon Add the number of vegetation structures that qualify. If you have: 4 structures or more points = 4 3 structures point Map; of.owardii wegetation:classes.- 2 structures om 1 structure points = 0 H 1.2. Hydroperiods (seep. 73) Figure.' Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10%of the wetland or'/ acre to count. (see textfor descriptions of hydroperiods) Permanently flooded or inundated 4 or more types present points = 3 Seasonally flooded or inundated 3 types present 2 Occasionally flooded or inundated 2 types present Saturated only 1 type present points = 0 Permanently flowing stream or river in, or adjacent to, the wetland Seasonally flowing stream in, or adjacent to, the wetland r Lake-fringe wetland = 2 points ` Freshwater tidal wetland = 2 points Map•of hydropettods H 1.3. Richness of Plant S ecies (seep. 75) Count the number of plant species in the wetland that cover at least 10 ft2. (different patches of the same species can be combined to meet the size threshold) You do not have to name the species. Do not include Eurasian Milfoil, reed canatygrass, purple loosestrife, Canadian Thistle If you counted: > 19 species points = 2 List species below if you want to: $ - 19 species pints = i ~ o~Qs c < $ species n s = Total for page Wetland Rating Form -western Washington ` 13 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number H 1.4. Interspersion of habitats (seep. 76) Igure Decide from the diagrams below whether interspersion between Cowardin vegetation classes (described in H 1. 1), or the classes and unvegetated areas (can include open water or mudflats) is high, medium, low, or none. None = 0 poi Low =1 point Moderate = 2 points [riparian braided channels] High = 3 points NOTE: If you have four or more classes or. three vegetation. classes and open water Ilse me ;of:Cowardin ve etation classes the rating is always "high". H 1.5. Special Habitat Features: (seep. 77) Check the habitat features that are present in the wetland The number of checks is the number of points you put into the next column. Large, downed, woody debris within the wetland (>4in. diameter and 6 ft long). Standing snags (diameter at the bottom > 4 inches) in the wetland Undercut banks are present for at least 6.6 ft (2m) and/or overhanging vegetation extends at least 3.3 ft (lm) over a stream (or ditch) in, or contiguous with the unit, for at least 33 ft (10m) Stable steep banks of fine material that might be used by beaver or muskrat for denning (>30degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet turned grey/brown) At least acre of thin-stemmed persistent vegetation or woody branches are present in areas that are permanently or seasonally inundated.(stnictures for egg-laying by amphibians) Invasive plants cover less than 25% of the wetland area in each stratum of plants 0 NOTE. The 20% stated in earlyprintings ofthe manual on page 78 is an error. H 1. TOTAL Score - potential for providing habitat Add the scores •om H1.1, H1.2, H1.3, H1.4, H1.5 Comments Wetland Rating Form - western Washington: - 14 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number H 2. Does the wetland unit have the opportunity to provide habitat for many species? H 2.1 Buffers (seep. 80) Figure Choose the description that best represents condition of buf fer of ivetland unit. The highest scoring criterion that applies to the wetland is to be used in the rating. See text for definition of "undisturbed. " - 100 m (33011) of relatively undisturbed vegetated areas, rocky areas, or open water >95% of circumference. No structures are within the undisturbed part of buffer. (relatively undisturbed also means no-grazing, no landscaping, no daily human use) Points = 5 - 100 m (330 ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 50% circumference. Points = 4 - 50 m (170ft) of relatively undisturbed vegetated areas, rocky areas, or open water >95% circumference. Points = 4 - 100 in (330ft) of relatively undisturbed vegetated areas, rocky areas, or open water > 25% circumference, . Points = 3 - 50 m (170ft) of relatively undisturbed vegetated areas, rocky areas, or open water for > 50% circumference. Points = 3 If buffer does not nieet any of the criteria above - No paved areas (except paved trails) or buildings within 25 m (80ft) of wetland > 95% circumference. Light to moderate grazing, or lawns are OK. Points = 2 - No paved areas or buildings within 50m of wetland for >50% circumfepm Light to moderate grazing, or lawns are OK. --2 - Heavy grazing in buffer. Points =1 - Vegetated buffers are <2m wide (6.611) for more than 95% of the circumference (e.g. tilled fields, paving, basalt bedrock extend to edge of wetland Points = 0. - Buffer does not meet any of the criteria above. Points =1 Aerial: tioto:showlri 'buffers H 2.2 Corridors and Connections (seep. 81) Ii 2.2.1 Is the wetland part of a relatively undisturbed and unbroken vegetated corridor (either riparian or upland) that is at least 150 ft wide, has at least 30% cover of shrubs, forest or native undisturbed prairie, that connects to estuaries, other wetlands or undisturbed uplands that are at least 250 acres in size? (dams in riparian corridors, heavily ttsed gravel roads, paved roads, are considered breaks in the corridor). YES = 4 points (go to H2.3) NO = go to H 2.2.2 H 2.2.2 Is the wetland part of a relatively undisturbed and unbroken-vegetated corridor (either riparian or upland) that is at least 50ft wide, has at least 30% cover of shrubs or forest, and connects to estuaries, other wetlands or undisturbed uplands that are at least 25 acres in size? OR a Lake-fringe wetland, if it does not have an undisturbed corridor as in the question above? YES = 2 points (go to H2.3) NO = H 2.2.3 H 2.2.3 Is the wetland: i within 5 mi (8km) of a brackish or salt water estuary OR within 3 mi of a large field or pasture (>40 acres) OR within 1 greater than 20 acres? • =1 oin NO = 0 oints Total for page Wetland Rating Form - western Washington, 15 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number H 2.3 Near or adjacent to other priority habitats listed by WDFW (see new and complete descriptions of WDFWpriority habitats, and the counties in which they can be found, in the PHS report httU://wdfiv )v(t.-aov/lrab/vhslist.htnt ) Which of the following priority habitats are within 330ft (100m) of the wetland unit? NOTE; the connections do not have to be relatively undisturbed Aspen Stands: Pure or mixed stands of aspen greater than 0.4 ha (I acre). Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report p. 152). Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. Old-growth/Mature forests: (Old-growth west of Cascade crest) Stands of at least 2 tree species, forming a multi-layered canopy with occasional small openings; with at least 20 trees/ha (8 trees/acre) > 81 cm (32 in) dbh or > 200 years of age. (Mature forests) Stands with average diameters exceeding 53 cm (21 in) dbh; crown cover may be less that 100%; crown cover may be less that 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80 - 200 years old west of the Cascade crest. Oregon white Oak: Woodlands Stands of pure'oak or oak/conifer associations where canopy coverage of the oak component is important dill descriptions in WDFWPHS Y report p. 158). Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161). Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. ((ull descriptions of habitats and the definition of relatively undisturbed are in 13'DFW n eport: pp. 167-169 and glossary in Appendix A). Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. Cliffs: Greater than 7.6 in (25, ft) high and occurring below 5000 ft. Talus: Homogenous areas of rock rubble ranging in average size 0.15 - 2.0 in (0.5 - 6.5 ft), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of> 51 cm (20 in) in western Washington and are> 2 in (6.5 ft) in height. Priority logs are > 30 cm (12 in) in diameter at the largest end, and > 6 in (20 ft) long. If wetland has 3 or more priority habitats = 4 points If wetland has 2 priority habitat i If wetland has 1 priority hab t. =1 o' No habitats = 0 points Note: All vegetated wetlands are by definition a priority habitat but are not included in this list. Neat-by wetlands are addressed in question H2.4 Wetland Rating Form - western Washington.':' 16 August 2004 version 2 Updated with new WDFW definitions Oct. 2008 Wetland name or number H 2.4 Wetland Landscape'(choose the'otie'd&e? iptioii' of the landscape around the ivetland that best fits) (seep. 84) There are at least 3 other wetlands V2 mile, and the connections between them are relatively undisturbed (light grazing between wetlands OK, as is lake shore with some boating, but connections should NOT be bisected by paved roads, fill, fields, or other development. points = 5 The wetland'is Lake-fringe on a lake with little disturbance and there are 3 other lake-fringe wetlands, within'/z mule points = 5 There are at least 3 other wetlands within V2 mule, BUT the. connections between t re disturbed points = 3 The wetland is Lake-fringe on a lake with.disturbance and there are 3 other lake - wetland within:.% mile points = 3 .There is-at least 1 wetland within 1/2 mile. points = 2 There are no wetlands within 1 z mile. points = 0 H 2. TOTAL Score - opportunity for providing habitat 1 Add the scores oM H2. 1,H2.2, H2.3, H2.4 _ TOTAL for H 1 from page 14 ~ Total Score for Habitat Functions., - add the points for H 1, H 2 and record the result on . .1 Wetland Rating Form- western Washington'.. 17 August 2004 versi0n2 Updated with new WDFW definitions Oct. 2008 ATTACHMENT: A.- Site-Survey { 1 i i 28 10083 HABITAT TECHL CDE March 7, 2011 RECTIVED Mr. Maher Joudi, PE 3 2011 @ DR Strong Consulting Engineers. Inc CITY AUB RN 10604 NE 38th Place PERMIT CEKirkland, Washington 98033 RIVE RE: Wyncrest Residential Community, City of Auburn MAR 10 2011 Review of Pond Discharge to Retained Wetlands D.R. S1 RONG CONSULTING ENGINEERS IN( Dear Mr. Joudi, I would first like to thank you for providing the storm event flow volumes anticipated to be discharged into the onsite wetlands within the Wyncrest Residential Community. As we discussed the onsite wetlands are dominated by a fallow pasture plant community that is becoming invaded with a variety of native shrubs and sapling trees. In addition, these wetlands have been altered by prior land use actions to include the excavation of field drainage ditches to convey seasonal surface water generally to the north. As presently understood the retention of these onsite wetlands would not require the creation of outlet controls such that the existing pre-development patterns of seasonal surface water movement within and through these wetlands would not be adversely altered in the post-development condition. With both an understanding of the physical and biological conditions of the onsite wetlands and an understanding of the proposed discharge of seasonal surface water into these wetlands as the 2-year, 10-year, 25-year, and 100-year storm events it is the opinion of Habitat Technologies that,these release volumes would not adversely impact the retained wetland areas or adversely impact local water quality. The placement of stormwater outlet structures along the outer boundary of the established buffer would also utilize Best Management Practices for discharge dissipation to further protect the retained wetland area. Please contact me with any questions. Sincerely, 'Y Thomas D. Deming cc. Schneider Homes, Inc., @ Mr. Harry Schneider, 6510 Southcenter Blvd. Suite #1, Tukwila, Washington 98188 wetlands, streams, fisheries, wildlife - mitigation and permitting solutions 10083 P.O. Box 1088, Puyallup, Washington 98371 voice 253-845-5119 fax 253-841-1942 habitattech@gwestoffice.net Exhibit 12, Number of Pages 34 9 . PREPARED FOR SCHNEIDER HOMES, INC. December 20, 2010 L n'J3, Tyler Scalise C Staff Geologist . _ tis Kyle R. Campbell, P,E. Principal GEOTECHNICAL ENGINEERING STUDY WYNCREST RESIDENTIAL DEVELOPMENT SOUTH 300TH STREET & 64TH AVENUE SOUTH AUBURN, WASHINGTON" ES-1937' Earth Solutions NW, LLC 2881 -152"` Avenue Northeast Redmond, Washington 98052 Phone: 425-284-3300 Fax: 425-284-2855 Toll Free: 866-336-8710 TABLE OF CONTENTS ES-1937 PAGE INTRODUCTION 1 General , 1 Proiect Description 2 SITE CONDITIONS 2 Surface 2 Slope Reconnaissance 3 Subsurface 3 Geologic Setting 4 Groundwater 5 GEOLOGIC HAZARD CONSIDERATIONS 5 Erosion Hazard Assessment 5 Slope Stability Assessment 5. DISCUSSION AND RECOMMENDATIONS G General .6 Site Preparation and Earthwork 7 In-situ Soils__, . 7 Structural Fill Placement: 8 Slope Fill Placement 8 Erosion Control_............. 8 Foundations Seismic Considerations 9 Excavations and Slopes,.......-, . 9 Utility Trench Backfill . . 10 Pavement Sections 10 Preliminary Building Setback Recommendations 11 Slab-On-Grade Floors 11 Rockery and-Modular Block Walls 11 Cast-In-Place Retaining Walls, 12 Dralnaae 12 LIMITATIONS 13 - Additional Services 13 Earth Solutlons NW, LLC TABLE OF CONTENTS Cont'd ES-1937 , GRAPHICS _ PLATE 1 VICINITY MAP PLATE 2 TEST PIT LOCATION PLAN PLATE 3 FOOTING DRAIN DETAIL Appendix A 'Subsurface Exploration Test Pit Logs Appendix B Laboratory Test Results;: ) Sieve Analysis Results ; i Earth Solutions NW, LLC December 20, 2010 ES-1937 Schneider Homes, Inc. 6510 Southcenter Blvd, Suite 1 Tukwila, Washington 98188 Attention: Mr. Harry Schneider Dear Harry, Earth Solutions NW, LLC (ESNW) is pleased to present this report titled "Geotechnical Engineering Study, Wyncrest Residential Development, Auburn, Washington". We understand that the subject site will be developed with a residential subdivision consisting of approximately 24 single-family residential lots, underground utilities, stormwater detention pond, paved access roadways and associated site improvements. The site is underlain primarily by medium dense to very dense, silty sand with gravel and silty sand soils (Unified Soil Classification SM), glacial till (Qvt). Soils were observed to be in a moist to wet condition at the time of previous subsurface exploration (February, 2005). Based on the results of this Geotechnical Engineering Study, it is our opinion the proposed residential development is feasible from a geotechnical standpoint. Based on the results of our study, the proposed residential structures can be supported on conventional foundations bearing on the competent native soils encountered at our test sites, or structural fill soils used to modify existing site grades. Geotechnical recommendations for the proposed site development, and appropriate grading and building setback criteria as prescribed by the current development standards are provided in this study. We appreciate the opportunity to be of service to you on this project. If you have any questions regarding the content of this geotechnical engineering study, please call. Sincerely, EARTH SOLUTIONS NW, LLC Tyler Scalise Kyle R. Campbell, P.E. Staff Geologist Principal GEOTECHNICAL ENGINEERING STUDY WYNCREST RESIDENTIAL DEVELOPMENT SOUTH 300TH STREET & 64TH AVENUE SOUTH AUBURN, WASHINGTON ES-1937 INTRODUCTION General This geotechnical engineering study was prepared for the proposed Wyncrest Residential Development to be located northeast of the intersection of 641h Avenue South and South M0111 Street in Auburn, Washington. The approximate location of the proposed development is illustrated on the Vicinity Map (Plate 1). The purpose of this study was to review the existing geotechnical study and subsurface explorations previously conducted across the site to perform engineering analyses, and prepare geotechnical recommendations for the proposed 24 lot development.. Our scope of services for completing this geotechnical engineering study included the following: a Review subsurface exploration and characterization of site soil and groundwater conditions conducted by others; a Visual site/slope reconnaissance; o Engineering analyses, and; Prepare this report. The following documents/maps were reviewed as part of our report preparation: e Preliminary Geotechnical Engineering Study, Proposed Johnson Farm Residential Development, prepared Earth Consultants, Inc. Dated March 2005; o Wyncrest Preliminary Plat, Site Plan provided by client; King County Soil Survey s Geologic Map of King County, Washington Earth Solutions NW, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 2 Project Description We understand that the subject site will be developed with a residential subdivision consisting of approximately 24 single-family residential lots, underground utilities, stormwater detention pond, paved access roadways and associated improvements. The site will be accessed from the west, along the east side of 64th Avenue, with two main roadways and a series of access road spurs. As part of our report preparation, we reviewed the preliminary site plan for the property prepared by D.R. Strong Consulting Engineers, Inc., which illustrates the existing grades and proposed site layout. The approximate development areas and currently proposed lot layout are illustrated on the Test Pit Location Plan (Plate 2). The proposed residential structures will generally consist of relatively lightly loaded wood frame structures with either slab-on-grade or wood joist floors. Depending on the final building lot elevations, several of the residential structures may incorporate daylight basements. Based on experience with similar projects, we anticipate footing loads on the order of one to two kips per lineal foot and slab-on-grade loads of 150 pounds per square foot (psf). Stormwater from the development will be directed to the detention pond proposed to be located at the topographically lower area at the northwest corner of the property. Based on the existing topographic relief, grading will likely require cuts and fills of up to 10 feet to achieve subgrade elevations. Grading activities will likely consist of cuts along the eastern portion of the property and fills at the center of the site to establish the design building lot and roadway finish grade elevations. The soils generated from site excavations will likely be used elsewhere on-site as fill in efforts to balance site materials. If the above design estimates are incorrect or change, ESNW should be contacted to review the recommendations in this report. ESNW should review the final design to verify that our geotechnical recommendations have been incorporated. .SITE CONDITIONS Surface The subject site is roughly rectangular in shape, consisting of four parcels with a gross area of 8.6 acres. The site is bordered to the north and east by existing residential parcels, to the south by overgrown pastoral land, and to the west by 64th Avenue. A portion of the southeast corner of the site is bordered to the east by steep slopes that descend to the Green River valley floor west of the West Valley Highway. Earth Solutions NW, LI-C Schneider Homes, Inc. ES-1937 December 20, 2010 Page 3 Based on review of the site plan prepared by D.R. Strong Consulting Engineers, the steep slopes east of the southeast corner of the property varies in gradient that range from 30 percent to over 50 percent descending to the east, however, with an exception to these steep slopes, the overall site topography generally descends to the north to northwest with variable undulating gradients. The current topography is largely the result of past glaciation processes associated with the Vashon Stade of the Fraser glaciation, which occurred approximately 12,000 years ago. As the ice sheet receded to the north, meltwater flowed over the area contributing to the creation of the existing shallow hill and valley features that cover much of the site, resulting in a moderately undulating topographic relief. The site is vegetated primarily by overgrown pasture grass, dense brush and blackberry brambles, with areas of sparse trees and saplings. Slone Reconnaissance During our fieldwork, a slope reconnaissance was performed by traversing the top and toe of the steep slope area of the site. The main focus of the reconnaissance was to identify signs of instability or erosion hazards along the site slopes. The typical instability indicators include such features as; head scarps, tension cracks, hummocky terrain, groundwater seeps along the surface and erosion features such as gulleys and rills. During the slope reconnaissance, no obvious signs of recent, large scale erosion or slope instability were observed. Occasional arched tree trunks were observed, which may be a result of relatively shallow soil creep. Soil creep is a natural process whereby loose, sometimes saturated soils in the upper three to five feet of the soils mantling the slopes mobilize slowly down gradient. Soil creep typically is not an indicator of potential deep-seated rotational failure. In general, however, extensive or severe areas of soil creep and associated arched tree trunks were not observed throughout the steep slope areas of the property. The steep slope is heavily vegetated with brush, blackberry brambles, and several trees. Subsurface No subsurface exploration was conducted by ESNW in preparation of this letter. Previous subsurface exploration on the subject site and several neighboring properties was conducted by Earth Consultants, Inc. (ECI) in 2005. Included in this geotechnical study, 21 test pits were excavated and logged. Eight of these test pits were excavated across the proposed Wyncrest development or near to the property margin (TP-3 to TP-10). ESNW reviewed the test pit logs and the geotechnical study for the purpose of characterizing and classifying the soil conditions. Please refer to the attached test pit logs provided in Appendix A for a more detailed description of the subsurface conditions. The approximate locations of the test pits are depicted on the Test Pit Location Plan (Plate 2). Evidence of extensive and widespread fill from previous grading activities was not observed at test pit locations. Shallow fills from previous logging and farm grading activities may be encountered near the existing access roadway and outbuilding structures. Earth Solutions NW, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 4 Topsoil was encountered at all test pit locations. The topsoil and/or duff was characterized as a dark brown organic rich surficial layer typically 8 to 12 in thickness. In general, the thicker topsoil layers were observed to be in the topographically lower areas, and thinning along slopes and at topographically higher areas. Due to the varied topographic setting of the site, deeper topsoil/duff layers may be encountered during site stripping activities. The topsoil/duff is not suitable for foundation support, or for use as structural fill. However, the topsoil is suitable for use in landscaping areas, if desired. Underlying the topsoil, native soil deposits consisting primarily of medium dense to very dense, silty sand with gravel and silty sand soils(Unified Soil Classification SM), glacial till (Qvt). The glacial till soil unit is generally characterized by a poorly sorted soil matrix of silt, sand and gravel and is generally in a compact or dense to very dense condition, due primarily to the consolidation by the overriding ice sheets. Occasional layers of sorted sand or silt are common, due to the varied depositional environments that likely occurred during formation. Loose to medium dense poorly graded sand with silt deposits (Unified Soil Classification SP- SM) were encountered between two (2) and seven (7) feet below existing grade at TP-4 located at the northwestern portion of the subject site. SP-SM deposits are likely to be present at isolated areas adjacent to Tract "D" stream channel and wetland area. Glacial till deposits generally extended to maximum excavation depths of fourteen (14) feet below existing grades. Native soils were generally in a moist to wet condition at the time of the subsurface exploration (February 2005). Geotoaic Setting The referenced geologic map resource identifies the site and surrounding area to be underline by Vashon subglacial till (Qvt) soil deposits, The reviewed King County Soil Survey (SCS) identifies Alderwood series (AgC) gravelly sandy loam, 6 to 15 percent slopes and (AgB) 0 to 15 percent slopes. The King County Soil Survey indicates slight to moderate erosion hazard for the these Alderwood series soils. The steep slopes east of the southeast corner of the proposed site are underline by Alderwood and Kitsap series (AkF) soils, very steep slopes. The King County Soil Survey indicates severe to very severe erosion hazard for these Alderwood and Kitsap series soils. The soil conditions observed during our fieldwork and reviewed in the soil logs were generally consistent with both the geologic map and soil survey designations. Soils on site were observed to be consistent with Vashon subglacial till soil units with characteristics. This is based primarily on the relative densities and grain size distribution observed at the test sites. Earth Solutions NW, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 5 Groundwater Moderate to light groundwater seepage was observed at TP-4 and TP-10 the time of Earth Consultants, Inc. fieldwork (February 2005). Oxide staining was observed in the upper approximately two to six feet at three of the test pit locations, suggesting seasonal groundwater may be encountered at these elevations depending on the time of the year excavations take place. Groundwater conditions at the site, if present would typically be characterized as perched groundwater seepage. Groundwater seepage rates and elevations fluctuate depending on many factors, including precipitation duration and intensity, the time of year, and soil conditions. In general, groundwater flow rates are higher during the wetter, winter months. GEOLOGIC HAZARD CONSIDERATIONS As part of our study, the potential geologic hazards within the subject site as defined in King County Code, Chapter 21A.06 (Technical Terms and Land Use Definitions), were reviewed. Based on the subsurface exploration and slope reconnaissance, the subject site meets the criteria of an erosion hazard area as defined in the King County Code. Erosion Hazard Assessment In our opinion, based on the soil and the current topographic conditions sloping away from the top of the steep slopes, of the proposed development area of the site can generally be characterized as a moderate erosion hazard. As such, Best Management Practices (BPM's) should be implemented during and after construction to minimize the potential for excessive erosion or instability. Exposed soil surfaces should be vegetated or mulched to reduce erosion during construction. Surface water runoff should be controlled and not allowed to discharge over the top of the slopes. Final erosion control measures should consist of surface water controls and vegetation where exposed earth surfaces are present. Provided the recommendations in this report are followed, in our opinion, the proposed development will not increase the erosion hazard on the property or on adjacent properties. Slope Stability Assessment As part of our report preparation, ESNW performed a slope reconnaissance by traversing the top and toe of the steep slope area of the site (December 2010). The main focus of the reconnaissance was to identify signs of instability or erosion hazards along the site slopes. The typical instability indicators include such features as; head scarps, tension cracks, hummocky terrain, groundwater seeps along the surface and erosion features such as gulleys and rills. During the slope reconnaissance, no obvious signs of recent, large scale erosion or slope instability were observed. Earth Solutions NW, LLC i i I I e Schneider Homes, Inc. 'ES-1937 December 20, 2010 Page 6 During field work conducted by ECI in February 2005, no groundwater seepage on the slope face was observed, and mature vegetation covered the slope face, indicating no recent global instability. Due to the steep gradient of the slopes east of the southeast property corner, the slopes are susceptible to relatively shallow movements, extending to depths three to five feet of the upper deposits of loose silty sand mantling the slopes mobilize slowly down gradient. Movements of the upper deposit layer are more likely to occur if the soil becomes saturated as a result of extended periods of rainfall. The potential for relatively shallow debris flow type failures during a seismic event does also exist. This potential is common for most sloped topographic settings. The potential for shallow debris flow activity can be mitigated through controlling drainage above the slope areas and maintaining vegetation on the slopes. In our opinion, based on the results of our slope stability assessment, the soil conditions encountered during field exploration and reconnaissance, and our understanding of the proposed development, the site slopes are in a stable condition in their current condition and configuration. In our opinion, the proposed development will not increase the potential for slope instability, provided the recommendations in this report are followed. In our opinion, the use of engineered foundation walls and daylight basements construction, for homes adjacent to the existing steep slopes will not increase the potential for slide activity. Removal of overburden along the top of the southeast ridge will unload the slopes and more than compensate for the building loading associated with the proposed development. Furthermore, installing subsurface foundation drains, controlling surface runoff, establish and maintain permanent landscaping will help improve overall site stability and surface erosion susceptibility. ESNW should review slope conditions further once lot layouts and grades have been designed. DISCUSSION AND RECOMMENDATIONS General Based on the results of our study, construction of the proposed residential development is feasible from a geotechnical standpoint. The primary geotechnical considerations associated with the proposed development include site grading and earthwork, foundation support and setback criteria, structural fill placement, temporary and permanent slope construction and stability, and the suitability of the on-site soils for use as structural fill. Based on the results of our study, the proposed residential structures can be supported on conventional spread and continuous foundations bearing on competent native soils or structural fill. Throughout the proposed cut areas of the site, we anticipate that competent native soil suitable for support of foundations will generally be exposed at the footing elevations. Where loose or unsuitable soil conditions are exposed at foundation subgrade elevations, compaction of the soils to the specifications of structural fill, or overexcavation and replacement with structural fill may be necessary. Eadh Solutions NW, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 7 The soil encountered at the ECI test pit locations generally have a high sensitivity to moisture based on the fines content of the soil. Compaction of these soils to the levels necessary for use as structural fill will be difficult or impossible during wet weather conditions. If the moisture content of the soil is near the optimum level, the soil can be used as structural fill. However, the stability of the compacted soil will degrade if exposed to wet weather and/or construction traffic. The presence of perched groundwater seepage in utility and site excavations should be anticipated. Supplemental recommendations for controlling groundwater seepage can be provided by the geotechnical engineer if needed. However, based on the data obtained from the test sites, and our overall characterization of subsurface conditions, extensive site dewatering is not anticipated to be necessary for the proposed site development. This study has been prepared for the exclusive use of Schneider Homes, Inc., and their representatives. No warranty, expressed or implied, is made. This study has been prepared in a manner consistent with the level of care and skill ordinarily exercised by other members of the profession currently practicing under similar conditions in this area. Site Preparation and Earthwork The primary geotechnical considerations during the proposed site preparation and earthwork activities will involve structural fill placement and compaction, rockery and modular block wall construction, site drainage and erosion control, and permanent fill slope construction. We anticipate the mass grading will utilize a balanced approach, with cut soils used as structural fill elsewhere on-site. Topsoil and organic-rich soil was encountered in the upper approximately 8 to 12 inches at test sites. The topsoil/duff is not suitable for foundation support, or for use as structural fill. ESNW recommends stripping the site surface prior to placing structural fill. Topsoil is suitable for use in landscaping areas, if desired. In-situ Soils The soil encountered at the ECI test pit locations generally have a high sensitivity to moisture based on the fines content of the soil. Compaction of these soils to the levels necessary for use as structural fill will be difficult or impossible during wet weather conditions. If the moisture content of the soil is near the optimum level, the soil can be used as structural fill. However, the stability of the compacted soil will degrade if exposed to wet weather and/or construction traffic. Soils encountered during site excavations that are excessively over the optimum moisture content may require moisture conditioning prior to placement and compaction. Conversely, if the native soils are found to be dry at the time of placement, moisture conditioning through the application of water may be necessary prior to compacting the soil. Earth Solutions NW, LLC Schneider Homes, inc. ES-1937 December 20, 2010 Page 8 If the-on-site soils cannot be successfully compacted, the use of an imported soil may be necessary. Imported soil intended for use as structural fill should consist of a well graded granular soil with a maximum aggregate grain size of four inches, and a moisture content that is at or near the optimum level. During wet weather conditions, imported soil intended for use as structural fill should consist of a well graded granular soil with a fines content of 5 percent or less defined as the percent passing the #200 sieve, based on the minus three-quarter inch fraction. Structural Fill Placement In general, areas to receive structural fill should be sufficiently stripped of organic matter and other deleterious material. The majority of the organic matter associated with trees, brush, root balls, and groundcover should be removed from the fill areas. The geotechnical engineer, however, should observe cleared and stripped areas of the site prior to structural fill placement. Structural fill is defined as compacted soil placed in foundation, slab-on-grade and roadway. areas. Fills placed to construct permanent slopes and throughout retaining wall and utility trench backfill areas are also considered structural fill. Soils placed in structural areas should be compacted to a relative compaction of 90 percent, based on the maximum dry density as determined by the Modified Proctor Method (ASTM D-1557-02) and placed in maximum 12 inch lifts. In pavement areas, the upper 12 inches of the structural fill should be compacted to a relative compaction of at least 95 percent. Slope Fill Placement In general, fill placement throughout the existing slope areas of the site is feasible, provided existing slope surfaces are benched and a keyway is constructed at the slope toe. A representative of ESNW should be on-site during the fill placement to assess the slope fill construction, and to provide supplement recommendations for the fill placement, as necessary. During the construction of the fill slopes, the slope face must be compacted to 95 percent. Subsurface drainage and measures for controlling surface water runoff along the slope face must be utilized. ESNW should assess the need for subsurface drainage throughout the slope fill areas. Permanent erosion control and vegetation should be established along the fill slopes to reduce the potential for surface instability along the slope face. General guidelines for drainage below the slope fill areas are discussed in the "Drainage" section of this report. Erosion Control Temporary erosion control measures should include, at a minimum, silt fencing placed along the downslope perimeter of the construction envelope, and a construction entrance consisting of at least 12 inches of quarry spalls should be considered in order to minimize off-site soil tracking and to provide a firm surface. Surface water should not be allowed to flow over any temporary or permanent slopes. Interceptor drains or swales should be considered for controlling surface water flow patterns. A representative of ESNW should observe the erosion control measures, and provide supplement recommendations for minimizing erosion during construction, as necessary. Earth Solutions NW, LLC Schneider Homes, Inc: ES-1937 December 20, 2010 Page 9 Foundations Based on the results of our study, the proposed residential structures can be supported on conventional spread and continuous foundations bearing on competent native soils or structural fill. Throughout the proposed cut areas of the site, we anticipate that competent native soil suitable for support of foundations will generally be exposed at the footing elevations. Where loose or unsuitable soil conditions are exposed at foundation subgrade elevations, compaction of the soils to the specifications of structural fill, or overexcavation and replacement with structural fill may be necessary. Foundations bearing on competent native soil or structural fill should be designed using an allowable soil bearing capacity of 2,500 psf. For short term wind and seismic loading, a one- third increase in the allowable soil bearing capacity can be assumed. With structural loading as expected, total settlement in the range of one inch is anticipated, with differential settlement of approximately one-half of an inch. The majority of the settlements should occur during construction, as dead loads are applied. Passive resistance and friction acting on the foundations can be assumed for purposes of calculating resistance to lateral loading. Assuming the foundations are backfilled with structural fill, passive resistance can be calculated using an equivalent fluid with a unit weight of 350 pounds per cubic foot (pcf). For calculating friction, a coefficient of 0.40 should be used. A factor-of-safety of 1.5 has been applied to these values. Seismic Considerations The 2009 International Building Code specifies several soil profiles that are used as a basis for seismic design of structures. Based on the soil conditions observed at the test sites, Site Class C, from table 1613.5.2, should be used for design. In our opinion, liquefaction susceptibility at this site is low to negligible. The relative density of the site soils and the absence of an established shallow groundwater table is the primary basis for this conclusion. Excavations and Slopes The Federal and state Occupation Safety and Health Administration (OSHAWSHA) classifies soils in terms of minimum safe slope inclinations. Based on the soil conditions encountered during fieldwork activities, the site soils encountered to depths of up to four feet would be classified by OSHA/WISHA as Type C. Temporary slopes over four feet in height in Type C soils should be sloped no steeper than 1.5H:1V (Horizontal:Vertical). The site soils encountered to depths of greater than four feet would generally be classified by OSHA/WISHA as Type A. Temporary slopes over four feet in height in Type A soils should be sloped no steeper than 0.75HAV. If temporary slopes cannot be constructed in accordance with OSHA/WISHA guidelines, temporary shoring may be necessary. Earth solutions NW, LLc Schneider Homes, Inc. ES-1937 December 20, 2010 Page 10 Permanent fill slopes should maintain a gradient of 2HAV, or flatter, and should be planted with vegetation to enhance stability and to minimize erosion. A representative of ESNW should observe temporary and permanent slopes to verify that the inclination is suitable for the exposed soil conditions, and to provide additional grading recommendations, as necessary. Utility Trench Backfill In our opinion, the soils observed at the test sites are generally suitable for support of utilities. Organic or highly compressible soils encountered in the trench excavations should not be used for supporting utilities. The soil encountered at the ECI test pit locations generally have a high sensitivity to moisture based on the fines content of the soil. Compaction of these soils to the levels necessary for use as structural fill will be difficult or impossible during wet weather conditions. If the moisture content of the soil is near the optimum level, the soil can be used as structural fill. However, the stability of the compacted soil will degrade if exposed to wet weather and/or construction traffic. Utility trench backfill should be placed and compacted to the specifications of structural fill provided in this report, or to the applicable specifications of the city or county jurisdictions. Pavement Sections The performance of site pavements is largely related to the condition of the underlying subgrade. To ensure adequate pavement performance, the subgrade should be in a firm and unyielding condition when subjected to proofrolling with a loaded dump truck. Structural fill in pavement areas should be compacted to the specifications detailed in the "Site Preparation and Earthwork" section of this report. It is possible that soft, wet, or otherwise unsuitable subgrade areas may still exist after base grading activities. Areas of unsuitable or yielding subgrade conditions will require remedial measures such as overexcavation and thicker crushed rock or structural fill sections prior to pavement. For relatively lightly loaded pavements subjected to automobiles and occasional truck traffic, the following pavement sections can be considered; o Two inches of asphalt concrete (AC) placed over four- inches of crushed rock base (CRB), or; Two inches of AC placed over three inches of asphalt treated base (ATB). The AC, ATB and CRIB materials should conform to WSDOT specifications. All soil base material should be compacted to at least 95 percent of the maximum dry density. Earth Solutions NW, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 11 Heavier truck-traffic areas generally require thicker pavement sections depending on site usage, pavement life expectancy, and site traffic. ESNW can provide appropriate pavement section design recommendations for truck traffic areas and City of Auburn right-of-way improvements, as necessary. Additionally, the City of Auburn or King County Road Standards may supersede the recommendations provided in this report. Preliminary Building Setback Recommendations Preliminary building setbacks shall maintain a minimum of 15 feet from top of descending existing slope areas along the southeast property corner of the subject site as shown on site layout prepared by D.R. Strong Consulting Engineers. Variable conditions exist with respect to the steep slope area as they relate building setback conditions, foundation elevations, and slope gradient. Therefore, the following setback recommendations are provided at this time for general planning purposes. The foundations may be extended down below grade such that the bottom of the footings set back 15 horizontal feet from the face of the slope. These preliminary recommendations should be reassessed on a case by case, or lot by lot basis by ENSW. Further assessment and reduction of the recommended preliminary setbacks may be possible. Stab-On-Grade Floors Slab-on-grade floors for the proposed buildings should be supported on a firm and unyielding subgrade consisting of competent native soil or at least one foot of structural fill. Unstable or yielding areas of the subgrade should be recompacted or overexcavated and replaced with suitable structural fill prior to construction of the slab. A capillary break consisting of a minimum of four inches of free draining crushed rock or gravel should be placed below the slab. The free draining material should have a fines content of 5 percent or less (percent passing the #200 sieve, based on the minus three-quarter inch fraction). In areas where slab moisture is undesirable, installation of a vapor barrier below the slab should be considered. If used, the vapor barrier should consist of a material specifically designed for use as a vapor barrier and should be installed in accordance with the manufacturers' recommendations. Rockery and Modular Block Walls Rockeries, or a combination of rockeries and modular block walls may be constructed as part of the overall site work. Based on the soil conditions and our understanding of the proposed earthwork, the use of rockeries and modular block walls is feasible from a geotechnical standpoint. In general, the soils observed throughout the proposed cut areas of the site exhibit good soil strength, and use of native cut rockeries or gravity modular block wall systems is feasible. Where fills will be utilized, geogrid reinforced fill will be necessary as part of the rockery or modular block wall construction. A formal rockery and modular block wall design should be completed if rockeries or modular block walls are planned to be constructed. The design should include approximate wall and rockery alignments with top and bottom elevations depicted. Supporting engineering calculations and construction details should also be included in the rockery and modular block wall design. Earth Solutions MN, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 12 Cast-In-Place Retaining Walls Retaining walls should be designed to resist earth pressures and applicable surcharge loads. For design, the following parameters can be used for retaining wall design: o Active Earth Pressure (Yielding Wall) 35 pcf (level backfill) a At-Rest Earth Pressure (Restrained Wall) 50 pcf (level backfill) Traffic Surcharge (Passenger Vehicles) 70 psf (rectangular distribution) o Passive Resistance 350 pcf (level grade) Coefficient of Friction 0.40 Additional surcharge loading from foundations, sloped backfill, or other loading should be included in the retaining wall design. Drainage should be provided behind retaining walls such that hydrostatic pressures do not develop. If drainage is not provided, hydrostatic pressures should be included in the wall design. ESNW should review retaining wall designs to verify the earth pressure values have been incorporated into design and to provide additional recommendations, as necessary. Retaining walls should be backfilled with free draining material that extends along the height of the wall, and a distance of at least 18 inches behind the wall. The upper one foot of the wall backfill can consist of a less permeable soil, if desired. A rigid, perforated drain pipe should be placed along the base of the wall, and connected to an appropriate discharge location. Drainage The presence of groundwater seepage should be expected in site and utility excavations. Temporary measures to control groundwater seepage and surface water runoff during construction will likely involve interceptor trenches and sumps, as necessary. Based on the limited amount of seepage encountered during the ECI fieldwork, we do not anticipate extensive dewatering of excavations will be necessary. However, as previously discussed, a plan for controlling and collecting groundwater during construction should be prepared, in the event unexpected groundwater conditions are encountered. In our opinion, perimeter footing drains should be installed at or below the invert of the building footings. A typical footing drain detail is provided on Plate 3 of this report. Earth Solutions NW, LLC Schneider Homes, Inc. ES-1937 December 20, 2010 Page 13 LIMITATIONS The recommendations and conclusions provided in this geotechnical engineering study are professional opinions consistent with the level of care and skill that is typical of other members in the profession currently practicing under similar conditions in this area. A warranty is not expressed or implied. Variations in the soil and groundwater conditions observed at the test locations may exist, and may not become evident until construction. ESNW should reevaluate the conclusions in this geotechnical engineering study if variations are encountered. Additional Services ESNW should have an opportunity to review the final design with respect to the geotechnical recommendations provided in this report. ESNW should also be retained to provide testing and consultation services during construction. 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S3 th 53471, iii Uststltiq tout 3ifNt•i r~ 3~g st ss.~ d Auburii > ~ _ Loth st> ~ . ~ a j d - . sr.1 1i5v-id 317th 3 `~ti ~b` sash ~~C a? t z ,3St SS > r+v! 4 t ~f~,i % ! is~ tAtFist _ S 3153r5P„ ► ~`~Cl ~r v ~ 31 tFf I 'n °j N JJthgS! _ 5a ~y ~._o'Y'!li ~ s I p ulN7th st II1V y t r a ~a +tir m 7 w 5. 10 51 y~ r 4(/.rV s I > 316th Gl ? f.SYr ``tr S c v a 5"i& Sk r t; IQth~ i I_ n l t u `S 319tts St i r ro+ c vi St 4E~ 1 i vvf sic; _ S'3tt~>r'' tit'ii; ' > 7 } S 3~15T.51q ` 5.37dt sa7 3 ~324Jt __.tr~ Ot ~a . i i3zae, St at 17~ s tr r s SJ$h14 aC r nism ~ ~ { ~ . ~ ~ ~ e • id tilil ~ ' td 14 ? M ns > .u 2nd St fJs'J hS3 p u tt~ a 1 t ;1: 4-1 N JJ!" U !3 a S 376th m, d s ti o r tf 4 Vi ' I~~AItJ s ~ rN' - tt/ t,t ~1 y r EtaR / S7t !John r 1~t~f3neR;a 3t® V3. 53t~tiii'l J°1 s nrr lm~ .si 5_ 33 3, rst t - 1~ s j ~ . d ..-tC St Y yes r 19 _ _ iSQ "T ~ tt iCl' NORTH t llr Reference: King County, Washington j Map 745 Vicinity Map By Thomas Brothers Maps Wyncrest Residential Development Dated 2009 King County, Washington NOTE: This plate may contain areas of color. ESNW cannot be Dtoan. GLS Date.12114!2010 Prof, No. 1937 responsible for any subsequent misinterpretation of the Information resulting from black & white reproductions of this plate. Checked TS Date Dec: 2010 Plate 1 nc r t NORTH c m I s ti JTP-4 0 Z ._tt ~`dLyU t:. ¢rcr r t t, E 0 M 100 200 & 298TH I~LACE •n7 00. f° ; _ r _ ; i I Scalp in Feet t LEGEND S 299TH STREET TP-3-1--Approximate Location to 7 - - r 1 I Earth Consultants Inc. Test Pit, ' ~ r - - - Proj. No. E-11688, Mar. 2005 1?` ye; i C IT •10 7P 7I fr` 72 " Subject Site vbF I ( - ^ 1 t 12 Proposed Lot Number I Existing Building ITP-8 1 E I 7 r, f / r r Dmn. By iTP-9 NOTE: The graphic shm m an W z ptma ma net intef ded to dmtpn GLS pwpomorpaeteseta memuremerd,wc*to""I'tlm Chocked By E appradmate ter beellamrobwe to the ww)dmate 1=5= of TS eXeM and I orpropaaed ale fadms. The hrfarmatbn b1 ted b teryety beeed on dote provided by the dlerd attho Un Of W Date . lady.ESWWcanmatberesParrsbbforarbsegwrdde~chMs 12Jtarzoto I ar inhrpratelan of the data by0ftM Pm). No, NOTE: This Plato MW M tale amW cf -br• ESiNW cmo t be 1937 respombla for airy xbsagaam mbinlnpreletlorl dthe NfrmCttion Plate mu" from tr648whtom odudim-ofIhbpbte. 2 t 0 i tr 1 5~ b@ t l } C] j h! ~ Slope gpd Can :j8":4tl~llj:.~;' 1~E yS',•f~l~sit~t till) 2" (Min.) Perforated Rigid Drain Pipe (Surround with 1" Rock) ENOTES: a Do NOT tie roof downspouts } to Footing Drain. o Surface Seal to consist of SCHEMATIC ONLY - NOT TO SCALE NOT A CONSTRUCTION DRAWING 12 of less permeable, suitable soil. Slope away from building. LEGEND: l Surface Seal; native soil or other low permeability material. L q { ! ~ Y, 't K it rEr3l .t [~I1j CC1.7Fyi~?.r': l0 wf.a't. rt,) 4{tip;,:' 1" Drain Rock Ly'.Q~1S:~ ;i;l`ui•11'Clttirl'='elii)1~9=at~~g FOOTING DRAIN DETAIL Wyncrest Residential Development King County, Washington Drwn. GLS Date12/15/2010 Prof. No. 1937 1 Checked TS Date Dec. 2010 Plate 3 APPENDIX A SUBSURFACE EXPLORATION (Earth Consultants, Inc. Exploration Logs) ES-1937 The subsurface conditions at the site were previously explored by Earth Consultants, Inc. on the property and neighboring properties. The approximate locations of 8 test pits located on or near the subject site are illustrated on Plate 2 of this report. The test pit logs are provided in this Appendix. The subsurface exploration was completed in February 2005. The test pits were excavated to a maximum depth of 14.0 feet below existing grade. Logs of the test pit observations by ECI are presented in Appendix A. The final logs represent the interpretations of the field logs and the results of laboratory analyses. The stratification lines on the logs represent the approximate boundaries between soil types. In actuality, the transitions may be more gradual. Earth Solutions NW, LLC i y 3 . Test Pit Log 1 Project Name: ShQet pf Johnson Farm Residential Develo ment t 1 Job No. Logged by: Date: Test Pit No.: 11688 SSR 2117105 TP-3 t _ j Excavation Contactor: Ground Surface Elevation: NW Excavating _ Notes: o r „ o Surface Conditions: Depth of topsoil & sod 10", field grass. General W rn g Notes rn p LL > N 6 SM Brown silty SAND with gravel, loose, moist i l ? -medium dense i 3 -variable gravel content ! -oxide staining I 22.1 -dense -slightly cemented s~- 10.3 ~ 7 20.5% fines 1s.t3 a NOTE: Test pit terminated at 8 feet below existing grade. No groundwater encountered during excavation. W Test Pit Log Earth Consultants Inc. Johnson Farm Residential Development &Sn%-Uo'""""8IsdCrUW5 King County, Washington c a r- Proi. No. 11688 Dwn. GAP Date 3/17105 Checked KMW Date 3117105 Plate A4 Subsurface conditidns deplcted fepresent our observations at the time and locetlon of this exploratury.hole, modified by engincedng tests, analysis and judgment. Thby are riot nece~ssriIy representative-of.other times and locations, We. cannot accept responsibility for the use or interprolatlon by others of information vrosented on this Irdr. Test Pit hog sheet of Project Name: 1 1 Johnson Farm Residential Development Date: Test Pit No.: Job No, Logged by 11688 SSR _ 2117/05 TP-4 Ground Surface Elevation: Excavation Contactor; NW Excavating Notes: „ a Surface conditions: Depth of topsoil & sod 10", brush & blackberry. General W a E E N E Notes (7 co SM Brawn silty SAND, loose, rnoist 1 2 SP-SM Brown poorly graded SAND with silt, loose to medium dense, moist 3 o~ - :p 4 0 a r a ~ ° -oxide staining s -increased silt content 'o a: 24.7 7 SM J Blown silty fine SAND, medium dense, moist. 8 -silt layers s -sand layers 1q it -sand and gravel layer 11.6 f2 -moderate to heavy seepage 13 21,13 14 NOTE: Test pit at 14 feet below existing grade. Groundwater encountered at 12 feet during excavation. a u W Test Pit Log >li Earth COl"1SUltclntS Inc. Johnson Farm Residential Development King County, Washington o ceoxu,rtcatrnsac,v"onmcrualscie^"ws J U W Pro]. No. 11688 Own_ GAP Date 3/17105 Checked KMW Date 3!17!03 Plate A5 Subsurface conditions depicted represent our observations at the time and location or this exploratory hole, modified by engineering tests, analysis and judgment. They are not necessarily representative of other limes and locations. We cannot accept responsibility for the use or interpretation by others of Information presented on this on. Test Pit Log . Project Name: Sheet of Johnson Farm Residential Development Job No, Logged by; Date: Test Pit No.: 11688 SSR 2117/05 TP-5 Excavation Contactor. Ground Surface Elevation: NW Excavating Notes; 42 o „ o Surface Conditions: Depth of topsoil & sod 12", field grass/brush and General W CL ( Cl 0 E blackberry brambles. Notes M 15 0 m 3 a rn C7 cn co SM Brown silty SAND, loose, wet 1 -medium dense 13.4 3 4 -with gravel 5 -dense 10.3 s y NOTE: Test pit terminated at 6 feet below existing grade. No groundwater encountered during excavation. W Test Pit Log p- Earth Consultants Inc. Johnson Farm Residential Development q Ceoxdwat[nglHess.ccofoglsts6envUav.rntalSCknlvs King County, Washington a 1 I Date 3/17/05 Checked KMW Date 3117105 Plate A6 Proj. No. 11688 t7wn. GAP Subsurface conditions depicted represent our observations at the time and location of this exploratory hole, modified by engineering tests, analysis and judgment. They are not necessarilyy representative of other times and locations. We cannot accept responsibility for the use or interpretation by others of information presented on this loq. Test Pit Log Sheet Of Project Name: 1 1 Johnson Farm Residential Development Job No. Logged by: Date; Test Pit No.: 11688 SSR 2117105 TP-6 Excavation Contactor. Ground Surface Elevation: NW Excavating Notes: surface Conditions: Depth of topsoil & sod 10", field grass and blackberry o ~ m u,o General W y a aMi o M brambles. E IL Notes f~M a) N p N a [0 SM Brown silty SAND with gravel, loose, moist i -medium dense z -moist to wet 14.8 8 -variable gravel content -dense a 5 18.4 NOTE: Test pit terminated at 6 feet below existing grade. No groundwater encountered during excavation. n H U W Test Pit Log Eariih Consultants inc. Johnson Farm Residential Development Geo:edvxal unBtnttrs. oeowsts & cwtTorumvar sdenrWS King County, Washington L Proj. No. 11688 Dwn. GAP Date 3117105 Checked KMW pate 3117105 Plate A7 _:~J Subsurface conditions depicted represent our observaltons at the time and location of this exploratory hole, modified by engineering tests, analysis and judgment. They are not necessarily representative of other times and locattons. We cannot accept responsibility for the use or interpretation by others of information presented on this lop. Test Pit Log Project Name: Sheet of Johnson Farm Residential Development Job No, Logged by: Date: Test Pit No.; 11688 SSR 2117/05 TP-7 _ Excavation Contactor. Ground Surface Elevation; NW Excavatin Notes: Surface Conditions: Depth of topsoil & sod 10", field grass. General W r a° 5 L N .°o Notes M Ern ° ci rn SM Brown silty SAND with gravel, loose, moist 1 - 2 -medium dense 3 4 5 -dense 12.Y s NOTE: Test pit terminated at 6 feet below existing grade. No groundwater encountered during excavation. a Fi U ~I a - - Test Pit Lag Earth Consultants Inc. Johnson Farm Residential Development J Cm-%tChnSRISEnwYwers ccdo&wq&Ef7vummm iscicruw King County, Washington t a F Proj, No. 11688 Dwn, GAP Date 3117105 Checked KMW Date 3/17105 Plate A8 Subsurface conditions depicted represent our observations at the time and location of this exploratory hole, modified by engineering tests, analysis and judgment. They are not necessarily repreaentalive of other times and locations. We cannot amopt responslbifity for the use or into(pretalion by others of information presented on this ion, Test Pit Log - Sheet of Project Name: Johnson Farm Residential Development 1 1 Job No, Logged W Date: Test Pit No.: 11688 SSR 2117/05 , TP-8.. . Excavation Contactor: Ground Surface Elevation: NW Excavating Notes: Surface Conditions: Depth of topsoil & sod 10", heavy brush and blackberry u o r m N c o a v Q brambles. General W Notes N o 4-- 10 SM Brown silty SAND, loose, moist to wet 1 -medium dense 2 3 _ -dense to very dense 17.4 4 -slightly cemented -moist 3 6 7 e 9 i.U 19 9.3 i2 NOTE: Test pit terminated at 12 feet below existing grade. No groundwater encountered during excavation. a ~a Test Pit Log ® Earth Consultants Inc. Johnson Farm Residential Development GcVM++rdMrrrsa,ms. o~~s&~,.aro„~+ca~scrcnrwg King County, Washington J 0. w Proj. No. 11688 Dwn. GAP Date 3!17105 Checked KMW Date 3117105 Plate A9 Subsurface conditions depicte.0 represent our observations at the Ume and locatlon of this exploratory hole, modified by engineering tests, analysis and judgnnont, They are not necessarlly fepresenletive of other Umes and locations. We cannot accept responsibility for the use or Interpretation by - others of information Presented on this top. Test Pit Log Project Name: Sheet of Johnson Farm Residential Development 1 1 Job No. Logged by: Date: Test Pit No.: 11688 SSR 2/17105 TP-9 Excavation Contactor: Ground Surface Elevation: NW Excavating Notes; o t N a Surface Conditions, Depth of topsoil & sod 8", heavy brush and blackberry General w a a L 0.0 brambles. Notes C7 LL ~n SM Brown silty SAND with gravel, loose, moist 1 z -medium dense 12.2 3 q -dense 5 6 7 6 !3 ib f1 10.5 12 NOTE: Test pit terminated at 12 feet below grade. No groundwater encountered during excavation. N 0 Test Pit Log Earth Consultants Inc. Johnson Farm Residential Development .J GMeChr&W engla--C(S. CCOIOS1 6 En tomr.Maf SOen%ls k King County, Washington 6 w Proj. No. 11688_ 1 Dym. GAP Date 3117/05 I I Checked KMW Date 3!17/05 Plate A10 Subsurface condilions depicted represent our observations at this time and location of this exploratory hole, modified by engineering tests, analysis and Judgment. They are not necessarily representative of other times and locations. We cannot accept responsibility for the use or interpretation by others of information presented on this lop. Test Pit Log Project Name; Sheet of 1 1- Johnson Farm Residential Development Job No, Logged by: 72117105 ate: Test Pit No.: .11688 . SSR TP-10 Excavation Contactor. Ground Surface Elevation: NW Excavating Notes: oSuitace Conditions: : Depth of topsoil & od 12", field grass. General W cc T u Notes SM Brown silty SAND; loose, wet 1 SM Brown silty SAND, loose, wet z oxide.staining 18.3 3 -contains gravel -medium dense -light perched seepage s -with gravel -dense 7 13.6 8 NOTE: Test pit terminated at 8 feet below existing grade. Groundwater seepage encountered at 5 feet during excavation. 0 U w - Test Pit Log OW.Consultants Inc. Johnson Farm Residential Development 3 King County, Washington F PM. No. 11688 own. GAP, Date .3117!05 Checked KMW Date 3117!05 Plate A11 _ Subsurface , conditions depicted represent our observations at the time and location of this exploratory hole, modified by engineering tests,.analysis and ludgrrient. They are not necessarily representative of other times and IoGations:, We cannot accept responsibility for the use or interpretation by others of information.presented on this lop. APPENDIX B t LABORATORY TEST_RESULTS (Earth.--Consultants, Inc.l_ah Results) ES-1397 1 p { r f + F , l { E + i y s J I ~ a i - - t E i i y F i ! r Earth Solullohs MN LLC _ particle Size Distribution Report C f c s oo e -Tr e ~ p o 0 9o -f- i 80 LL) Z U 50 ` - ! - 1 1- 40 30 ! ~ - - - - 24 t -i- ! - i - - - 10 i''= - - - - ( i ° t tU 1 0.1 0.01 0.001 200 100 GRAIN SI E - mm % COBBLES % GRAVEL % SAND RG SILT % CLAY USCS _ AASNTO PL LL 0 16.9 54.9 - 28.2 $M ❑ 1.0 78.5 2A.5 j SM n 13.9 59,2 26.9 SM F18 PERCENT FINER SIEVE PERCENT FINER SOIL DESCRIPTION Inches number O TP-1: 4.0' - SM O size 0 ❑ Brown silty Sand with gravel; 14.2% 100.0 100.0 1000 94 83.1 99.0 100.0 100.0 100.0 #a 70.3 98.2 81.2 ❑ TP-3: 8.0' . SM 91.4 100.0 91.8 916 58.4 96.9 73.5 Gray silty Sand; 19.9% moisture 930 50a 94.7 06.4 1150 41.6 76.4 -54.7 o TP-14: a,0' - SM 9100 33,$ 38.0 39.3 Brown silty Sand; 20.7% moisture 9200 28.2 20.5 26.9 GRAIN SIZE. _REMARKS: D60 1.32 0.223 0.394 o Tech: SEP Dap 0.0956 0.120 0.0904 G Tech:;iEP D10 COEFFICIENTS A Tech; SSP Cc C, 0 Source: Sample No.: TP-1 Elev./Depth: 4.0' Source: Sample No.: TP-3 Elev./Depth: 8.0' 4 Source: Sample No.: TP-14 Elev./Depth: 3.0' - ~ Client: EARTH Project: Johnson Farm CONSULTANTS, INC. ProeotNo:` E-11688.,.- Plate,,. REPORT DISTRIBUTION ES-1937. 1 COPY Schneider Homes, Inc. 6510 Southcenter Blvd, Suite 1 Tukwila, WA 98188 Attention: Mr. Harry Schneider Earth Solutions MN, LLC POO 001 t , 1%1AR 93 201 Earth Solutions NW LLc February 22, ES-1937.01 2011 ~ ° Geotechnical Engineering ° Construction Monitoring ° Environmentai Sciences Schneider Homes, inc. 6510 Southcenter Boulevard, Suite 1 Tukwila, Washington 98188 Attention: Mr. Harry Schneider Subject: Response to City of Auburn Review Comments Dated January 24, 2011 File No. PLT10-0010 References: Earth Solutions NW, LLC Geotechnical Engineering Study ES-1937, Dated December 20, 2010 Dear Mr. Schneider: As requested, Earth Solutions NW, LLC (ESNW) has prepared this letter to address the geotechnical issues included in the subject City of Auburn comment letter. The City of Auburn is requesting additional information to evaluate the storm drainage system. The pertinent comment is provided below, with ESNW s response following. Item 3 A geotechnical analysis is needed to complete the review. The geotechnical analysis shall include soil log information, subsurface flow between the rates, slope bottm recommendations groundwater and determine if adequate freeboard exists betty pond elevation. ESNW Response - ESNW observed and logged a test pit excavated within the proposed detention pond on February 11, 2011. The test pit location is illustrated on the test pit location plan attached to this letter. A copy of the field log is also attached to this letter. t was We understand the pond bottom will be at elevation 269 it location consisted of abou#tfivle feet about 281 feet. The conditions encountered at the t pit sand with of loose to medium dense well graded sand overlying l7 medium dense to dense feet below existing gradetor elevation gravel glacial till extending to the termination depth 264 feet. No signs of a seasonal groundwater table observed were e mtime of the ay additional and fieldwork (February 2011). While it is possible that pe shed groundwater very low, given travel along the sand/glacial till contact, in our opinionh opinion, volume would the detention pond locations level of development up-gradient from the site. In our pirtion, feasible from a geotechnical standpoint. 1805 - 136th Place N.E., Suite 201 Bellevue. WA 98005 (325) 449-4704 FAX (425) 449-4711 ,Schneider Homes, Inc. ES-1937.01 February 22, 2011 Page 2 Subsurface Flow Rabe Subsurface flow rates within the proposed detention pond would be very low. The sand layer present within the current pond location is isolated, and limited to the margins of the seasonal stream located to the south and east. In our opinion, the detention pond will not affect the stream flow patterns because the pond is essentially isolated from the surrounding soil via a liner. Slope Stabilization The soils underlying the site consist primarily of firm glacially consolidated deposits. The proposed storm drainage system does not allow water to flow over surrounding slopes. Slope stabilization will not be adversely affected by the proposed storm drainage system, in our opinion. Freeboard Provisions Based on the assumed pond bottom elevation and the conditions encountered at the test pit location TP-101, at least five feet of separation is provided between the seasonal high groundwater table. We trust this letter meets your current requirements. Should you require additional information, or have questions, please call. Sincerely, EARTH SOLUTIONS NW, LLC TV- - , j..." 14 S. ie el, Kyle R. Campbdll; P.E: enior Project gist Principal Attachments: Test Pit Location Plan Test Pit Log TP-101 Earth Solutions IOW, LLC Exhibit 13, Number of Pages 11 Maher Joudi From, Jo-Boyer -TRANS (jboyer@fwps.org] Sent: Monday, March 21, 2011 11:37 AMnp pt{~ll To: Maher Joudi ll V LJ j Cc: Cindy-Wendland -TRANS; Michelle-Turner -TRANS Subject: Re: FW: WyncrestQ 3 +r.1`Y AUBURN Mr. ]oudi, p~ Oegg the give Thank you for the opportunity n°theeeastlsiWay de of 64th AverScattS 299th St. Thank you also Wyncrest development t located for your patience while we completed our assessment. After visiting the site, and reviewing the district requirements for student safety, we have made the following recommendation: A crosswalk is needed to assist all elementary students in getting from the east side of 64thAve S to the west side, where they will use sidewalks to walk to the Meredith Hill Elementary. Since the flow of traffic leaving Wyncrest will more likely flow towards S 296thSt, which leads to West Valley Hwy, we recommend placing one crosswalk on 64 . th64th Ave Ave S, aS,approximately 100ft south of S 299th St, and 211ft north of S`300th P1, This crosswalk should be raised, as on a speed bump, to encourage slower speed in the neighborhood. Signage indicating a crosswalk ahead should also be placed in the neighborhood. It would also be beneficial to use LED lights on the signage to indicate student use. Wyncrest Data This development is located on the east side of 64th Ave S, betweeneide00Homes-on thepsout , and S 298th St on the north. D.R. Strong-Consulting Engineers. 64th Ave S is a two-lane road running north-south. S 299th St leads eastward into the development. Subdivision consists of 24 proposed single-family ni2ss ft 8.60 g acrees. s. DDnorth evelosidewillSplace of 299th sidewalks along the east side of 64th Ave S, approx. St, and approx. 140ft long on the south side of S 299th Secondary level students will be provided bus transportation to Kilo Middle School and Thomas Jefferson High School, and will utilize the bus stop on the Northwest corner of 64th Ave S at S 298th P1. All elementary students are within the walking zone for Meredith Hill Elementary. 7o Boyer Dispatch Supervisor/Routing Specialist 253-945-5960 'bo er w s.or "Life isn't about waiting for the storm to pass ...it's about learning to dance in the rain." Y !'y F- . U 'ur - :...f School Walkway Analysis MAR 23 2011 QTV 0FAUSURN for ( ERMITr-ENTEFF PRELIMINARY PLAT OF NCREST South 299th Street & 64th Avenue South, Auburn, Washington A. J~ P wasy~~~ 452 z terse r~NAl, 1 DRS Project No. 10067 City of Auburn Project No. OwnerlAppiicanf Schneider Homes, Inc. 6510 Southcenter Boulevard, Suite #1 Tukwila, WA 98188 Report Prepared by D. R. STRONG Consulting Engineers, Inc: 10604 N.E. 38th Place, Suite 101 Kirkland WA 98033 (425) 827-3063 Report Issue Date November 22, 2010 Report Issue Date March 21, 2011 SCHOOL WALKWAY ANALYSIS DISCLAIMER: This report was prepared at the request of Schneider Homes, Inc. for the 8.55 acre parcels known as a portion of the Southeast Quarter of Section 2, Township 21 North, Range 4 East, W.M:, in King County, Tax Parcel Numbers 022104-9052, 9214, 9216, 9298 and 9054 (Site). D. R. STRONG Consulting Engineers Inc. (DRS) has prepared this report for the exclusive use of DRS, the owner, and their agents, for specific application to the development project as described herein. Use or reliance on this report, or any of its contents for any revisions of this project, or any other project, or by others not described above, is forbidden without the expressed permission by DRS. Elementary School: Meredith Hill Elementary Students will walk to Meredith Hill Elementary located at 5830 South 300th Street. Students will cross 64th Avenue South via a proposed crosswalk, south of the proposed S. 299th Street, and head south along.the west side of the street, turn right (west) at South 300th Street and follow the road to Meredith Hill Elementary on the left. Photos below:. . :z - cf -'11. Looking South at 64 Avenue South Looking West at Sauth 300 Street - m 2010 D.`R. STRONG Consulting Engineers Inc 2 Preliminary Plat of Wyncrest . 'Auburn; Washington School Walkway Analysis z ~ - sF s•~~'S Looking West along South 300 Street Looking West along South 300 Street . "tt•- gig. .'r~( - - 5? i• r South 300 Street @ 6'IS Avenue.South Looking West along South 300 Street © 2010 D. R. STRONG Consulting Engineers Inc 3 Preliminary Plat of Wyncrest School Walkway Analysis Auburn, Washington 4 ,h i l Reach Meredith Hills Elementary © 2010 D.,R. STRONG Consulting Engineers Inc 4 Preliminary Plat of Wyncrest ljC School Walkway Analysis Auburn, Washington Middle School: Milo Middle School High School: Thomas Jefferson High School The Bus Stop for both Kilo and Thomas Jefferson is located at the intersection of South 298th Place and 64th Avenue South. Students will cross 64th Avenue South via a proposed crosswalk, south of the proposed S. 299th Street, and head north along the west side of the street, to South 298th Place. Photo below. Looking North along 64 Avenue South towards South 298th Place. O 2010 D. R. STRONG Consulting Engineers Inc 5 Preliminary Plat of Wyncrest School Walkway Analysis Auburn, Washington School Walkway Analysis for PRELIMINARY PLAT OF WYNCREST South 299' Street & 64°t Avenue South, Auburn, Washington rOU,t a~ V R A 232 t b sS0 ~w~~ZZI?A do DRS Project No. 10067 City of Auburn Project No. Owner/Applicant Schneider Homes, Inc. 6510 Southcenter Boulevard, Suite 91~ Tukwila, WA 98188 j';(j UIQ Report Prepared by D. R. STRONG Consulting Engineers, Inc. 10604 N.E. 38th Place, Suite 101 Kirkland WA 98033 (425) 827-3063 Report Issue Date November 22, 2010 SCHOOL WALKWAY ANALYSIS DISCLAIMER: This report was prepared at the request of Schneider Homes, Inc. for the 8.55 acre parcels known as a portion of the Southeast Quarter of Section 2, Township 21 North, Range 4 East, WK, in King County, Tax Parcel Numbers 022104-9052, 9214, 9216, 9218 and 9054 (Site). D. R. STRONG Consulting Engineers Inc. (DRS) has prepared this report for the exclusive use of DRS, the owner, and their agents, for specific application to the development project as described herein. Use or reliance on this report, or any of its contents for any revisions of this project, or any other project, or by others not described above, is forbidden without the expressed permission by DRS. Elementary School: Meredith Hill Elementary Students will walk to Meredith Hill Elementary located at 5830 South 300th Street. Students will cross 64th Avenue South and head south along the west side of the street, turn right (west) at South 300th Street and follow the road to Meredith Hill Elementary on the left. Photos below. M Looking South at 64 Avenue South Looking West at South 300 Street © 2010 D. R. STRONG Consulting Engineers Inc 2 Preliminary Plat of Wyncrest School Walkway Analysis Auburn, Washington o ~ ~l Lri - S uS 3 LbokingyWest along South 300 Street Looking West along South 300 Street 'r^ - - I. .C- V South 300 Street @ 61S Avenue South Looking West along South 300 Street Preliminary Plat of Wyncrest © 2010 D. R. STRONG Consulting Engineers Inc 3 Ary Pm, Washington School Walkway Analysis f° . y tl a r~ Reach Meredith Hills Elementary © 2010 D. R. STRONG Consulting Engineers Inc 4 Preliminary Plat of Wyncrest School Walkway Analysis Auburn, Washington Middle School: Kilo Middle School High School: Thomas Jefferson High School The Bus Stop for both Kilo and Thomas Jefferson is located at the intersection of South 298th Place and 64th Avenue South. Students will cross 64th Avenue South and head north along the west side of the street, to South 298th Place. Photo below. Looking North along 64 Avenue South towards South 298th Place. © 2010 D. R. STRONG Consulting Engineers Inc 5 Preliminary Plat of Wyncrest Auburn, Washington School Walkway Analysis Exhibit 14, Number of Pages 2 -I& A D. R. STRONG Al"Aft tafAY0 CONSULTING ENGINEERS pUrt March 21, 2011 RECEIVED Project No. 10067 Dennis Selle, P.E. MA 23 2011 City Engineer, Assistant Director of Public Worksoi-T~z 1:A€ SURN City of Auburn PL-RMIT CENTER 25 West Main Street Auburn, Washington 98001 Re: Wyncrest Preliminary Plat, File No. PLT10-0010, Deviation Requests Dear Mr. Selle: This letter is provided to request and support two deviation requests for this project. The deviations requested consist of reduction of roadway width of 64th Avenue South (64th) and reduction of intersection spacinbetween the existing South 298th Place (298th) and the proposed South 299th Street (299"'). 1) Design Standards Table 10-3, Minimum Intersection Spacing "Residential and Non-Residential Collectors: 250 feet" Description of Required Deviation The proposed road layout provides 194 feet between the centerlines of 298th and 299t _h in order to maintain usable space between the southern boundary of the plat and 299tH Justification of Required Deviation The purpose of providing minimum intersection spacing is to ensure that opposing left turns do not cause an unsafe driving condition and to ensure that queue lengths for left turns into the respective streets do not interfere with one another. The 298th eastbound traffic left turn movement heads north onto 64th, and the 299th westbound traffic left turn movement heads south onto 641h. With 298th being north of 299th, the opposing left turn scenario is not applicable as the left turn movements do not intersect. The current volumes on 64th are at a negligible percentage of the traffic volumes that classify a Residential Collector (per a meeting with Joe Welsh, February 4, 2011, City of Auburn). These low volumes coupled with the fact that only 23 homes front 298th and 39 homes will be utilizing 299th (this will be less as the surrounding parcels develop and more accesses are created) lead us to determine that left turn queue lengths for these streets will not impact one another and the reduced intersection spacing will not create an adverse impact on public safety. It is also important to mention that these low volumes indicate that 64th is functioning more as a Local Street which requires intersection spacing of 125 feet. 10604 N.E. 38th Place Suite 101 Kirkland, WA 98033-7903 Phone: (425) 827-3063 Fax: (425) 827-2423 Toll Free: (800) 962-1.402 wv,ow.df strong, corn Survevors Landscape Architects Dennis jelle, P. E. March 21, 2011 Page 2 of 2 2) Design Standards Table 10-1, Roadway Width "The required roadway width for a Residential Collector is 34 feet" (one lane each direction with a center turn lane) Description of Required Deviation The existing 60-foot right of way (30-foot on east side of road) is sufficient to accommodate a 17-foot half street, curb, gutter, planter and sidewalk per the standard section. However, pursuant to the Comprehensive Transportation Plan, Figure 3-4, 64th is designated a future bike route. This requires an additional six-foot right of way dedication along the plat frontage. The project is proposing to eliminate the center turn lane, and include the bike lane within the existing 30-foot half right of way. Justification of Required Deviation The purpose of providing the center turn lane is to ensure that no significant backups are produced as a result of vehicles attempting left turn movements. The current volumes on 64th are at a negligible percentage of the traffic volumes that classify a Residential Collector (per a meeting with Joe Welsh, February 4, 2011, City of Auburn). These low volumes coupled with the fact that only 23 homes front 298th and 39 homes will be utilizing 299th (this will be less as the surrounding parcels develop and more accesses are created) lead us to determine that left turn queue lengths for these streets will not create significant backups and that elimination of the center turn lane will not create an adverse impact on public safety. It is also important to mention that these low volumes indicate that 64th is actually functioning as a Local Street which does not require a third lane per Table 10-1. Thank you for your consideration in this matter. If you have any questions or concerns, please do not hesitate to contact me. Sincerely yours, D. R. STRONG Consulting Engineers Inc. Maher A. Joudi, P.E. Senior Project Engineer MAJ/wjs cc: Harry Schneider R:12010101100671Correspondenc&V-etters%outV-I 10321_Deviation. docx