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20070404 Signed MDNS 03052008SEPA NO: 07 -0404 MITIGATED DETERMINATION OF NONSIGNIFICANCE Proponent: Description of Proposal: Location of the Proposal: Section/Township/Range: Threshold Determination: Conditions/Mitigating Measures: Lead agency: Responsible Official: Date of Issue: Comment Deadline: Appeal Deadline: 1 Creek Road Mixed Use Construction of a 164 unit apartment complex with approximately 55,000 square feet of commercial development. The project site is located on 10520 Creek Street SE, and identified by Tax Parcel Numbers 64303400400, 64303400501, 64303400502 Section 29, Township 17 North Range 2 East, W.M. The City of Yelm as lead agency for this action has determined that this proposal does not have a probable significant adverse impact on the environment. Therefore, an environmental impact statement (EIS) will not be required under RCW 43.21C.030(2)(c). This decision was made after review of a completed environmental checklist and other information on file with the lead agency. This information is available to the public on request. SEEATTACHED City of Yelm Grant Beck, Community Development Director March 4, 2008 March 19, 2008 March 26, 2008 This Mitigated Determination of NonSignifcance (MONS) is issued pursuant to Washington Administrative Code 197 -11 -340 (2). Comments must be submitted to Nisha Box, Community Development Department, at City of Yelm, 105 Yelm Avenue West, P.O. Box 479, Yelm, WA 98597, by March 19, 2008, at 5:00 P.M. The City of Yelm will not act on this proposal prior March 26, 2008, at 5:00 P.M. You may appeal this determination to the Yelm Hearing Examiner, at above address, by submitting a written appeal no later than March 26, 2008 at 5:00 P.M. You should be prepared to make specific factual objections. Contact Grant Beck, Community Development Director, to learn more about the procedures for SEPA appeals. This MDNS is not a permit and does not by itself constitute project approval. The applicant must comply with all applicable requirements of the City of Yelm prior to receiving construction permits which may include but are not limited to the City of Yelm Comprehensive Plan, Zoning Code (Title 17 YMC), Critical Areas Code (Chapter 14.08 YMC), Storm water Drainage Design and Erosion Control Manual (DOE), Uniform Building Code, State Environmental Policy Act (SEPA) (Title 14 YMC), Road Design Standards, Platting and Subdivision Code (Title 16 YMC), and the Shoreline Master Program. DO NOT PUBLISH BELOW THIS LINE Published: Nisqually Valley News, Friday, March 7, 2008 Posted in public areas: Tuesday, March 4, 2008 Copies to: All agenciesrcit¢ ens on SEPA mailing list and adjacent property ownerDept. of Ecology w /checklist ATTACHMENT SEPA Case Number 07 -0404 Findings of Fact 1. This Mitigated Determination of Non Significance is based on the project as proposed and the impacts and potential mitigation measures reflected in the following environmental documents: • Environmental Checklist (November 2007, Sound Engineering, Inc.) • Preliminary Storm Drainage Report (September 2007, Sound Engineering, Inc) • Technical Memorandum (January 2008, Shea Carr Jewell) • Preliminary Geotechnical Report (August 2007, GeoResources, LLC) • Wetland Review and Delineation (August 2007, Forest Pro Inc.) 2. The City of Yelm has adopted a concurrency management system as required by the Growth Management Act. Chapter 15.40 Yelm Municipal Code (YMC) Concurrency Management is designed to ensure that the improvements required to support development are available at the time of development. A concurrency determination may be issued for a proposal as it relates to transportation issues when: the development provides on -site frontage improvements; the project makes off -site improvements as necessary to provide for the safe movement of traffic; and the project makes a contribution to projects identified the six year transportation improvement program in the form of a Transportation Facilities Charge. 3. The Community Development Department reviewed transportation impacts using Synchro and SimTraffc tools designed to model networks of signalized and unsignalized intersections which is useful for analyzing complex traffic situations such as closely spaced intersections and the effects of signals on nearby unsignalized intersections. Based on the data within the traffic scope, the traffic models show that during the peak hour all intersections and driveway accesses operated at acceptable levels. The cue analysis identified left turn conflicts into retail centers along Creek Street during the peak hour. The addition of a center turn lane would alleviate this conflict. The Creek Street Plaza project occurring at the corner of Creek Street and SR 507 will be constructing a right turn lane on Creek Street, as well as extending a center turn lane north. 4. The Shoreline Management Act provides policies and regulations for development along Shorelines of the State. The Shoreline Master Program for the Thurston Region provides policies and regulations for development along Yelm Creek. The property is bordered on the east side by Yelm Creek. A portion of the development is proposed to be located within the Shoreline Jurisdiction area. Any development within the Shoreline Jurisdiction requires a Shoreline Substantial Development Permit which allows mitigation of potential adverse impacts to the shoreline area. 5. Section 14.08.140(D)(2) YMC requires a 150 foot Riparian Habitat Buffer along Yelm Creek. The development on the site is proposed to be located outside the 150 foot Riparian Habitat Buffer. 6. There is a mapped FEMA 100 year flood zone area adjacent to Yelm Creek, which encompasses the creek and its associated wetlands. Section 15.32.280 YMC prohibits construction of residential structures or any construction that results in any increase in flood levels. All proposed development is located outside of the mapped FEMA 100 year flood plain. 7. The City has adopted the 1992 Department of Ecology Drainage Design Manual, which requires that stormwater generated from development be treated for sediments before infiltration. 8. Section 14.08.120 YMC states that no development shall locate within 50 feet, measured on a horizontal plane, from the outer edge of the high ground water hazard area or extending to a ground elevation two feet above the base flood elevation, whichever is less. The bottom of any infiltration facility for stormwater discharge shall be located at least 6 feet above the base flood elevation. Modifications to the prescriptive standards for the protection of critical areas may be authorized by the City. Mitigation Measures 1. The developer shall mitigate transportation impacts based on the new P.M. peak hour trips generated by the project. The Transportation Facility Charge (TFC) shall be based on specific uses, at the time of tenant improvement. 2. The applicant shall construct a center turn lane as part of required frontage improvements. This turn lane shall be extended from the center turn lane being constructed as part of the Creek Street Plaza project, to the north side of the driveway entrance into the Post Office, approximately 350 feet across the property frontage. The drive lane would then be tapered to meet the existing street at the northern property line. 3. Civil engineering plans shall include temporary erosion control systems to be approved by the City of Yelm. 4. There are mapped high ground water hazard areas on the proposed site. The bottom of any infiltration facility for stormwater discharge shall be located at least 6 feet above the base flood elevation and no development shall locate within 50 feet, measured on a horizontal plane, from the outer edge of the high ground water hazard area or extending to a ground elevation two feet above the base flood elevation, whichever is less as identified by a Hydrogeological Report. 5. Any existing wells and on -site sewage disposal systems shall be abandoned pursuant to applicable Washington State and Thurston County health regulations. Evidence that all wells and sewage disposal systems have been abandoned in an approved manner shall be provided prior to approval of civil engineering plans.