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applicable to different phases of development. <br />B-2 During development, Trend,vest shall implement the following erosion control measures: <br />(a) Surface water and domestic discharge shall not be directed onto sloping areas or <br />randomly daylight on the site. <br />(b) All emergency overflows ti·om infiltration ponds, or other drainage conveyance features, <br />on slopes at grades of 51 I: 1 V or greater shall be tightlined to the base of the slope or to an <br />approved outfall point. <br />(c) Temporary TESC and infiltration facilities shall not be used for permanent facilities. <br />(d) All proposed fill soils planned for slopes steeper than 5H:1V shall be benched into the <br />hillside and compacted. <br />(e) Potential stonnwater discharge ti·om detention ponds into Stream C between <br />approximately elevations 2, 160 and 2,080 feet shall not exceed flows of 15 cfs. <br />Landslides <br />B-3 Minimum setback distances from the top of landslide hazard zones (as shown on Draft EIS <br />Table 6-2) for structures and lined detention ponds, shall be 50 teet for Landslide Hazard Zone 3. <br />75 feet for Landslide Hazard Zone 2, and 125 feet for Landslide Hazard Zone 1: provided that <br />the setbacks for Landslide Hazard Zone 2 and 3 may be reduced with grading and stormwatcr <br />measures approved by a geotechnical engineer, and additional site-specific studies might be <br />required. Setbacks for infiltration facilities and unlined detention facilities shall be determined <br />through site-specific geotechnical and engineering analysis. and shall be subject to the <br />recommendation of a licensed geologist, the approval by Kittitas County. and the issuance of any <br />applicable construction pcnnit. <br />B-4 To minimize landslide risks. the following additional conditions shall be implemented: <br />(a) Stormwater from the site shall be collected and tightlined away from the top of Landslide <br />Hazard Zones 1 through 3. <br />(b) No till, topsoil or other debris shall be placed over the top of Landslide Hazard Zone 1. <br />Any fill planned for slopes steeper than 5H: IV shall be benched and compacted into the <br />hillside. <br />(c) No cuts shall be made on or at the toe of Landslide Hazard Zone I unless approved by a <br />licensed geotechnical engineer and Kittitas County. <br />(d) No vegetation shall be removed from Landslide Hazard Zone l, with the exception of <br />dead or diseased trees, unless approved by a licensed geotechnical engineer and Kittitas <br />County. Vegetation removed from Landslide Hazard Zones 2 and 3 shall be limited to the <br />minimum clearing needed to permit construction. <br />Seismic Activitv <br />B-5 Uniform Building Code (UBC) guidelines shall be to! lowed for siting and design of any <br />facilities located in seismic hazard areas. Provisions for evaluating seismic issues as currently <br />described in the draft International Building Code 2000 (IBC2000) shall be considered in design. <br />If facilities are sited in areas prone to soil liquefaction. foundation supports shall be designed to <br />extend deeper than the liquefiable soils. The Building and fire Codes reference any where in <br />Suncadia MPR Conditions of Approval <br />December 2, 2008 <br />Page 5 <br />Index #32