5.7 PCSR 06-28-1994 - Laserfiche WebLink

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Tom Wiley Page 2 June 28, 1994 • The Department of Natural Resources (DNR), U.S. Army Corps of Engineers, and Sherburne County Soil and Water Conservation District have been notified in regard to this project. Sherburne County Soil and Water Conservation District mentioned that the pond is defined as a wetland by the 1989 Federal Manual for Identifying and Delineating Jurisdictional Wetlands. Concern was mentioned in regard to draining and filling of the wetland area. Mr. Wiley only intends to excavate the area around the pond and fill on a site outside the wetland boundaries. At the time this report was completed, the DNR and Army Corps of Engineers had not responded. This wetland is under the jurisdiction of the Wetland Conservation Act (W.C.A.). The City of Elk River is the local governmental unit implementing that act. EROSION CONTROL Erosion around the wetland should be avoided and all disturbed areas should • be protected by planting sufficient ground cover to contain the soil. Ground cover should be protected as necessary until self sustaining, thereby reducing the chance for excavated material to flow back into the wetland and degrade water quality. Silt fencing would aid the wetland boundaries until the existing vegetation secures soil. DRAINAGE City Engineer Terry Maurer commented on this project and mentioned concern about excavated soil draining back into the wetland area. After reviewing the proposed site for the excavated soil, Mr. Maurer did not anticipate problems that could disrupt existing drainage patterns. SLOPE According to City Code, slopes can not be greater than four (4) feet horizontal to one (1) foot vertical. Mr. Wiley is proposing a five (5) to one (1) slope for the pond area. Currently, the pond is approximately six (6) feet in depth. Newly excavated areas of pond should remain consistent in depth with the existing pond. If • depth of the excavated pond areas exceeds four (4) to five (5) feet, it becomes wiley.troy