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<br />. . <br /> <br />Permit Application No. 04-098 <br /> <br />John Dahl <br /> <br />14. Comment Letter prepared by MN DNR, dated August 30, 2004, <br />received September 1, 2004. <br /> <br />15. RCWD Permit File 98-088. <br /> <br />Findings: <br /> <br />1. The project entails a lot split on Lot 4, Block 2 (1.901= acres) of The <br />Woods of Clearwater Creek approved under RCWD Permit 98-088. <br /> <br />2, Runoff from the proposed home would flow over green space before <br />discharging to DNR Public Waters Wetland 545w (DNR 545w). <br />Driveway runoff will drain to both DNR 545w and Brian Drive, <br />which drains to a storrnwater pond constructed as part of RCWD <br />Permit 98-088. This satisfies District storrnwater management <br />requirements. <br /> <br />3. . District staff has field verified' existing wetland boundaries as <br />consistent with the delineation approved under RCWD Peffilit 98- <br />088. This project proposes filling 1,744 SF (0.04 acres) of Type 6/7 <br />wetland within DNR 545w. This exceeds the deminimis exemption <br />of 400 SF; therefore, 2: 1 replacement is required per WCA rules. <br /> <br />A wetland replacement plan application and-sequencing narrative <br />have been submitted, which indicates the Applicant intends ort <br />purchasing wetland bank credits to provide the required mitigation. <br />However, justification for purchasing replacement credits in an <br />adjacent watershed is required. Additionally, the proposed <br />replacement wetland. to be purchased is "out-of-kind" because it is <br />not the same wetland type as the impacted wetland (Type 2). <br />Therefore, the required replacement ratio is 2.25: 1. These comments <br />must be addressed before proposed wetland banking credits may be <br />approved to mitigate for the proposed impacts. Proof of purchase of <br />this wetland bank credit is required (after TEP acceptance of <br />sequenCing). <br /> <br />4. There is no RCWD lOO-year regulatory flood elevation established <br />for this site. No floodplain fill is proposed. <br /> <br />The proposed driveway will cross the overland outlet route of the <br />onsite wetland (DNR 54Sw), which is to be maintained by a culvert <br />. of unspecified size. The proposed culvert invert elevations are <br />904.5(8) and 904.2(N), respectively. The profile view of- the <br />proposed driveway specifies the lowest driveway overtopping. <br />elevation to be 906.0 and that the existing low point was 904.12. <br />Identification of the proposed 22 LF CMPdriveway culvert size <br />(diameter) and hydrologic calculations demonstrating no increase in <br />100-year flood elevation of the onsite wetland are required. <br /> <br />Emmons & Olivier Resources, Inc. <br /> <br />3 <br /> <br />9/17/04 <br />