LP-20-00001 Suncadia Ph 2 Div 4 BOCC Staff Report

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7 Department of Archaeology & Historic Preservation (DHAP) DHAP commented with the following concerns: “A desktop review of our Statewide Predictive Model has identified the proposed project area as having high potential for archaeological resources. This is due, in part, to the proximity of the proposed project area to the Cle Elum River. Additionally, numerous previously recorded archaeological sites are present near the proposed project area, and one archaeological site 45KT2147 is located partially within the proposed project area. Because the scale of ground disturbing actions would destroy this site and any others present, we recommend a professional archaeological survey of the project area be conducted prior to ground disturbing activities.” Staff Response: The applicant provided a response to the comments submitted by DAHP. The applicant stated that they will comply with the conditions set forth in the Development Agreement in Exhibit F conditions C 21-23. Cultural resource issues are addressed in the conditions C 21-23 of Exhibit F-1 to the Development Agreement. Mitigation measures listed within these conditions shall be applied. The applicant will need to adhere to all applicable regulations as outlined in the Development Agreement. Department of Ecology (DOE) DOE commented with the following statements: “According to the land use map for the proposed project, the eastern side of the proposed development site lies within about 50 feet of a tributary of the Cle Elum River. Additionally, other maps show that this tributary may cross the proposed project area; these maps include the Forest Practices Application Mapping Tool from the Washington Department of Natural Resources and Kittitas County's Compas mapping tool. The Cle Elum River and its tributaries are included in the Upper Yakima River Basin Suspended Sediment, Turbidity, and Organochlorine Pesticide Total Maximum Daily Load (TMDL) water quality improvement program and the Upper Yakima River Tributaries Temperature TMDL program. Erosion of the project site has the potential to add sediment and turbidity to this stream. Care must be taken, both during and after development of this site, to prevent the entry of sediment and turbidity to the Cle Elum River and its tributaries. Streamside vegetation must also be protected and maintained, and enhanced wherever possible. Project planning, development, and future use of the site should include water quality protection.” Staff Response: Applicant provided a response to DOE comments, included as Index #31 of the Master File. For new construction activities, New Suncadia maintains a stormwater pollution prevention plan for the entire MPR that will also be applicable to the development of Phase 2 Div. 4. An NPDES permit for MPR construction activities has been issued by the Washington State Department of Ecology (Permit No. WA-005236-1). The applicant states, “Conditions of the permit specify erosion control measures that will be used during construction activities. After the development of the site, water treatment will be provided for runoff from impervious road surfaces requiring stormwater treatment, including bio-filtration swales, bio-infiltration, and sheet flow dispersion.” The applicant has stated they will adhere to all applicable regulations as outlined in the Development Agreement, Erosion Plan, and the MPR Conditions of Approval. Public Comments: No public comments were received during the comment period.