Final Site Selection Report Kittitas_082118

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SECTION 3 AX0622181133PDX 3-1 Basis of Design Report Summary A Basis of Design for the new transfer station and site was established during the feasibility study phase of the project. The Kittitas County Transfer Station Basis of Design Report (Basis of Design Report; CH2M HILL Engineers, Inc. [CH2M], December 2016) presents the existing Ellensburg Transfer Station service area and customers, tonnages and process flows, and County growth projections and goals for establishing new facility design parameters. A conceptual site layout, including key elements of the new transfer station, was also established and presented in the Basis of Design Report. The new transfer station was designed to address existing facility limitations and meet the long-term needs of the County. The new transfer station includes the following elements: • Roads and facility geometry to safely accommodate traffic flows • Transfer building • Composting area • Administration building • Scalehouse building and scales • Recycling dropoff area • MRW building • Stormwater management Preliminary designs for the conceptual site layout were prepared in accordance with industry best practices, local planning, and State of Washington regulations for solid waste facilities (Washington Administrative Code [WAC] 173-350-310). Results established in the Basis of Design Report estimated a required area of approximately 20 to 25 acres to meet the solid waste and material management needs of the new facility. This estimate did not take into account site-specific features and dimensional limitations that may modify the space and design requirements. However, the estimate provided the County and the CH2M team with the required information to begin identifying and evaluating specific sites. The minimum size used for site selection was 25 acres. The Basis of Design Report is provided in Appendix A.