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<br />In an effort to minimize impacts to wetlands yet meet project purpose and need, <br />proposed WMC buffer does not meet minimum requireme nts along some areas <br />of proposed wetland fill. A variance application for these areas will be <br />submitted to RCWD for review with the revised Wetland Permit. Per Kjolhaug <br />Environmental Services. <br />2. A 10-foot bituminous trail is proposed within the upland buffer adjacent to the wetland <br />in Outlot B. This trail must maintain 25-feet from the edge of the we tland. The City’s <br />Environmental Coordinator is reviewing the wetland buffer areas. <br />Noted. <br />3. Two deep (30+ foot deep) ponds (Pond 200 and Pond 300) are proposed adjacent to <br />wetlands within the project. The adjacent wetlands are denoted as “high priority <br />wetlands” in the city’s Comprehensive Plan and are noted as having exceptional <br />vegetative diversity. The applicant shall take steps to ensure that the ponds will not <br />drain the adjacent wetland areas. In the WCA Wetland Replacement Plan, the <br />developer shall provide a plan to protect adjacent wetlands, the plan shall also include a <br />mitigation plan if the wetlands are impacted post construction. <br />With regards to pond construction and potential drainage effects on adjacent wetlands: <br /> <br />• Pond 300 in the northeast portion of the development area will be a maximum of 22 <br />feet deep, has a predicted NWL of 902-ft, and has no outlet (no outlet structure or <br />emergency overflow). In reality, the open water portion of Pond 200 will be the <br />elevation of the local water table and will vary throughout the year as the water table <br />does because the pond does not have a controlled outlet to stabilize water levels. <br />Because the pond does not have an outlet to drawn water down, it will not drain <br />nearby wetlands (there is no where to drain the water if there is no outlet). For these <br />reasons, drainage effects to Wetlands 3, 3a, or 3b from Pond 200 construction are not <br />expected to occur. A similar pond with no outlet was constructed onsite sometime after <br />1991 near the proposed wetland banking wetland. That large, deep, open-water pond <br />was excavated adjacent to wetland and has <br />not resulted in wetland drainage. <br /> <br />• Pond 200 will be excavated in around the west end of ACD 10-22-32 (west of the <br />current ditch crossing). The ditch currently drains freely to the west (no controlled <br />outlet). Water levels in the ditch were measured at 901.5-feet by the engineer. <br />Therefore, newly constructed Pond 200 will have an OSC with V notch weir invert of <br />901.5-ft with the top of the weir at 902.5-ft. The adjacent wetland the southeast <br />(Wetland 2) will have a NWL of 902.0-ft, and will have a raised outlet (EOF only) at <br />902.5-ft. Wetland 2 will need to be inundated with over 6 inches of water to outlet to <br />Pond 200. That occurrence alone, usually occurring early in the growing season, will <br />meet wetland hydrology requirements. For the remainder of the growing season, Pond <br />200 and adjacent Wetland 2 water levels will fluctuate with precipitation events and <br />normal seasonal water table level variations. For these reasons, drainage effects to <br />Wetland 2 from Pond 200 construction are not expected to occur. <br /> <br />• Wetland 4 to the northwest of Pond 200 will not have an outlet, will not be connected <br />to Pond 200, and will be physically separated by the pond maintenance bench/berm.