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Filed for Record 04/16/2009 04 :48:53 PM -Kittitas County, WA Auditor -200904160090 Page 75 of 118 Comprehensive Plan section 2.2(E), and Kittitas County stonn water regulations, as amended, the following mitigation measures will be required. B-9 (a) Stormwater runoff shall be controlled according to an approved master drainage plan (MDP) that provides adequate retention/detention, promotes infiltration and provides water quality treatment. The MOP shall be prepared consistent with the standards , or functional equivalents, of the stormwater regulations referenced in these Conditions, and must be approved by the County Engineer prior to commencement of construction of MPR Infrastructure and Utilities as defined in the Development Agreement; provided, however, that this Condition does not preclude Trendwest from conducting lawful activities under its Forest Practice Application No. 2701173 approved by the Washington Department of Natural Resources. (b) The MOP shall incorporate the following considerations and standards: a) Infiltration facilities shall be used to infiltrate water. Facilities shall be located within or as close as possible to the developed sub-basin which would generate the surface water runoff. b) For sub-basins underlain by soil having low infiltration rates, runoff shall be routed to detention facilities which discharge either to downstream infiltration facilities or to existing surface water drainage systems. c) Surface dispersion and infiltration through roadside ditches in the lower-density residential areas shall be used. d) Residential roof runoff shall be infiltrated where permeable subsurface soils are present. e) The surface and subsurface drainage systems for the golf courses shall utilize infiltration sumps and trenches to infiltrate water into subsurface soils. (c) The applicant shall pay its proportionate share of stonnwater design and treatment improvements needed on county roads and intersections pursuant to these MPR Conditions of Approval. Water Quality. The EIS discusses adverse water quality impacts and identifies mitigation measures that should be implemented. Pursuant to Kittitas County SEPA Ordinance Section I 5.04.200(d), Comprehensive Plan Policies GPO 2.193, 2.194 and 2.210, Shoreline Master Program goals, policies, environment designations and use regulations, and KCC I 7 A.04- 17 A.OS, Critical Areas Ordinance, the following mitigation measures will be required. Con tru ction rm pacts B-IO A Temporary Erosion and Sedimentation Control Plan {TESCP) shall be prepared prior to land clearing and construction activities commencing, and as part of the stormwater pollution prevention plan accompanying any NPDES permit application required due to proposed discharges to surface waters of the state. Erosion and sediment control measures shall be as specified in the most current Department of Ecology Stonn Water Management Manual for Eastern Washington. Measures shall include best management practices (BMPs) for the control of sediments and pollutants ; measures for marking of clearing limits; temporary and permanent cover of exposed soils and stockpiles; silt fencing, construction entry and roadway stabilization; sediment traps and ponds; wet season construction protective measures; controlled and lined Suncadia MPR Conditions of Approval December 2, 2008 Page 7