5.4. SR 06-05-2006 - Laserfiche WebLink

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Page 4 May 24, 2006 Ms. Rebecca Haug Minnesota Department of Natural Resources Comments - Dated April 25. 2006 Items 6b and 6d - Descriotion A detailed erosion control prevention plan is being developed as part of the submittal package for the preliminary plat. This project will be completed in phases. Temporary and permanent cover crops will be utilized for areas exposed to wind and water erosion. Some areas may continue with agricultural operations until the final phase(s) are completed. Item 8 - Permits and Approvals Required We have been unsuccessful at getting a formal response from the US Army Corps of Engineers representative as to how the US Army Corps of Engineers may view the proposed fills. As such, Item 8 is amended to include the US Army Corps of Engineers Section 404 individual permit with a status of "Not yet Applied". Item 1 0 - Cover Types Actual land coverages of wetlands before and after are as follows: Before: 44.5 acres - After: 43.63 acres The after number is determined as the net result of subtracting impacts of 2.6 acres, adding replacement of 1.70 acres from/to the existing basin size. The total mitigation is determined by beginning with 25% of the restored wetland basin area of3 7.8 acres (9 .45 acres) and adding 1/2 of the ne\vly created \\'etland of 1.70 acres (0 .85 acres) for a total of 10.3 acres a Additional wetland credits are available to the project resulting from creation ofbuffer strips but are not shown in wetlands cover types. Finally, the before and after area for lawn/landscaping is adjusted to read: Before: 3.7 acres - After: 121.3 acres Item 12 - Physical Impacts on Water Resources The relocation of the road to the east of both \vetlands in questions is believed to be not viable. It is the intent to create a total impact on Basin 5 and a partial impact on Basin 3. These impacts are mitigated through the restoration of Basin 2 and the creation of ne\\' wetlands. The hydrology for Basin 3 is preserved vvith rear yard open space drainage and limited rooftop drainage. Impacts to Basin 3 are minimized \vith the use of retaining \-valls. Basins 3 and 5 are Type 3 Wetlands. Basin 2 is a Type 1 Wetland. The dominant vegetation in Basin 2 is Reed Canary Grass. The basin size and impact for Basin 3 is 31,914 and 8,825 square feet, respectively and Basin 5 is 11,307 and 11,307 square feet, respectively. Vegetative quality is poor for both Basins 3 and 5. Item 13 - ,Vater Use The City of Elk River 'ATill be preparing the response for this item.