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 Page 4 revised/updated by Kittitas County 6/21/2018 B. PRELIMINARY APPROVAL CONDITIONS (Res. No. 2010-013) ANALYSIS FINDING B.1 B.2 On-site stormwater management that conforms to the specifications of the Stormwater Management Manual for Eastern Washington (2004) is required of this development. A conceptual stormwater plan was submitted with the preliminary development plan showing potential locations for stormwater systems. Structures of stormwater systems shall not be placed within identified wetlands or in areas where cultural resources are known to exist. Stormwater systems shall be designed to store stormwater generated by a 24-hour, 25-year storm event. Stormwater system designs shall be prepared and stamped by a civil engineer licensed in the State of Washington. The final stormwater system design and locations shall be presented to Public Works and approved by the County Engineer prior to final approval. The stormwater system construction shall be certified by a licensed engineer. The certification shall be included with the road certification and is required prior to the issuance of a building permit. Road and site construction shall not begin prior to stormwater system design approval. Conceptual layout provided in exhibits 3 and 4 appear to meet the requirements in relation to location restriction (ie no wetland or cultural resource areas). The applicant states that they will work with the appropriate authorities upon approval to meet the standards required. Detailed plan will be submitted at final Satisfied B.3 Stormwater and surface runoff generated by this project must be retained and treated on site in accordance with regulating agencies’ standards, and not be allowed to flow onto WSDOT rights-of-way. Exhibits 3 and 4 outline 4 storm water retention areas throughout the project area to contain runoff. Detailed plans will be submitted at final Satisfied B.4 Wetland Areas and Buffers and Stream: Wetlands A, B, C, and D, and Stream A and their associated buffers shall be shown on the face of the final development plat and on the final development plan. Exhibits 3 and 4 demonstrate the locations of the four wetlands noted. Stream A is described in the critical areas report (exhibit 7) as running north through Wetlands A and B, but is not indicated on the site plans submitted. Final plat and development plan will require locations and any associated buffers to wetlands and streams. Not Satisfied: Stream A and associated buffer must be demonstrated on the face of the final development plan. B.5 Wetlands B, C, and D: Wetlands B, C, and D, and associated buffer areas of at least 20 feet (KCC 17A.04.020), shall be located within Open Space tracts. Associated buffer areas of at least 20 feet shall be located within Open Space tracts within the Dunford PUD. See attached critical areas report (exhibit 7). Satisfied B.6 Wetland A: Wetland A is located near the proposed access road from US 97. The applicant has indicated that road construction may result in wetland impacts. Kittitas County requires, to the extent practical, a zero net loss of wetlands (KCC 17A.04.015). In the event that disturbance to Wetland A cannot be avoided: a) disturbed areas shall be replaced at a ratio of 1.5 to 1, in accordance with KCC 17A.04.050; b) remaining undisturbed areas of Wetland A and its buffer shall be placed in an Open Space tract; and c) prior to ground disturbance, a Wetland Mitigation Plan, showing areas of wetland disturbance and creation shall be submitted to Community Development Services for review and approval in consultation with Washington State Departments of Ecology and Fish and Wildlife. Prior to final development plan approval, all necessary wetland replacement and features shall be constructed according to the Wetland Mitigation Plan. Exhibit 7 (critical areas report) states a general recommended buffer of 20 feet for Wetland A. Wetland A, according to exhibits 3 and 4, does not rest in the open space area indicated with blue hatch as required. The applicant indicated that road construction could impact wetland areas. No documentation of potential impacts or Wetland Mitigation Plan was submitted. The applicant expressed that this will be submitted for final platting. Not Satisfied: Applicant must indicate if road construction is expected to impact Wetland A and if so how this will be mitigated. B.7 Future Residential Lot Configuration: Future residential lot configuration shall be designed to minimize indirect impacts to wetlands. Indirect impacts would include changes in quantity or quality of ground or surface water flows feeding the wetlands, noise or light glare at night, removal or corridors used by wildlife to access the wetlands, and stormwater influences. The applicant states that “Dunford Planned Unit Development will design the residential lots in accordance to not impact identified wetlands.” This will need to be demonstrated through the Wetland Mitigation Plan before final platting. A Wetland Mitigation Plan Satisfied Index #13