2017-2037 Comp Plan Update Enabling Ordinance with Exhibit A

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Filed for Record 04/16/2009 04:48:53 PM - Kittitas County, WA Auditor - 200904160090 Page 73 of 118 applicable to different phases of development. B-2 During development, Trendwest shall implement the following erosion control measures: (a) Surface water and domestic discharge shall not be directed onto sloping areas or randomly daylight on the site. (b) All emergency overflows from infiltration ponds, or other drainage conveyance features, on slopes at grades of 5H:1 V or greater shall be tightlined to the base of the slope or to an approved outfall point. (c) Temporary TESC and infiltration facilities shall not be used for permanent facilities. (d) All proposed fill soils planned for slopes steeper than 5H: ] V shall be benched into the hillside and compacted. (e) Potential stormwater discharge from detention ponds into Stream C between approximately elevations 2,160 and 2,080 feet shall not exceed flows of 15 cfs. Landslides B-3 Minimum setback distances from the top of landslide hazard zones (as shown on Draft EIS Table 6-2) for structures and lined detention ponds, shall be 50 feet for Landslide Hazard Zone 3, 75 feet for Landslide Hazard Zone 2, and 125 feet for Landslide Hazard Zone 1; provided that the setbacks for Landslide Hazard Zone 2 and 3 may be reduced with grading and stormwater measures approved by a geotechnical engineer, and additional site-specific studies might be required. Setbacks for infiltration facilities and unlined detention facilities shall be determined through site-specific geotechnical and engineering analysis, and shall be subject to the recommendation of a licensed geologist, the approval by Kittitas County, and the issuance of any applicable construction permit. B-4 To minimize landslide risks, the following additional conditions shall be implemented: (a) Stormwater from the site shall be collected and tightlined away from the top of Landslide Hazard Zones I through 3. (b) No fill, topsoil or other debris shall be placed over the top of Landslide Hazard Zone 1. Any fill planned for slopes steeper than 5H: IV shall be benched and compacted into the hillside. (c) No cuts shall be made on or at the toe of Landslide Hazard Zone I unless approved by a licensed geotechnical engineer and Kittitas County. (d) No vegetation shall be removed from Landslide Hazard Zone 1, with the exception of dead or diseased trees, unless approved by a licensed geotechnical engineer and Kittitas County. Vegetation removed from Landslide Hazard Zones 2 and 3 shall be limited to the minimum clearing needed to permit construction. Seismic Activitv B-5 Uniform Building Code (UBC) guidelines shall be followed for siting and design of any facilities located in seismic hazard areas. Provisions for evaluating seismic issues as currently described in the draft International Building Code 2000 (IBC2000) shall be considered in design. If facilities are sited in areas prone to soil liquefaction, foundation supports shall be designed to extend deeper than the liquefiable soils. The Building and Fire Codes reference any where in Suncadia MPR Conditions of Approval Page 5 December 2, 2008