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HomeMy WebLinkAbout19970722 Ver 1_Mitigation Plan Review_20011016W AT �9pG r October 16, 2001 Dr. Gerald McCraln EcoScience 1101 Haynes St., Suite 101 Raleigh, NC 27604 Ms Andrea Spangler Piedmont Triad Regional Water Authority Wilmington Building 2216 W. Meadowvlew Rd, Suite 204 Greensboro, NC 27404 Dear Dr. McCraln and Ms Spangler Michael F Easley Governor William G Ross, Jr ' Secretary Department of Environment and Natural Resources Dr Gregory Thorpe, Acting Director Division of Water Quality We have completed our review of the compensatory wetland mitigation plans for the construction of Randleman Reservoir These plans addressed efforts to promote wetland ecosystems at Edgar Branch, Sophia Branch and Bob Branch (all In Randolph Co.) Your patience during our review process Is appreciated greatly as these plans were reviewed by other staff within the NC Division of Water Quality In addition to myself. All concerns are conveyed In this letter. Overall there has been considerable discussion on these plans The foremost Item that has received attention Is the amount of maintenance that will be required Some reviewers have expressed whether the concepts presented represent wetland restoration or wetland creation. In addition, all who have seen the sites have expressed concern on potentially flooding mature forested communities resulting in tree mortality and replacing those communities with Immature trees. Clearly the plans represent an Innovative approach to compensatory wetland mitigation, and one in which the outcome Is dependent on the skill and experience In managing water levels. We are optimistic that water quality benefits will result from the type of mitigation proposed dfi� North Carolina Division of Water Quality, Wetlands /401 Unit NCD EP;a 1650 Mad Service Center, Raleigh, NC 27699 -1650 2321 Crabtree Blvd , Raleigh, NC 27604 - 2260 Telephone (919) 733 -1786, Fax (919) 733 -6893 �. http / /h2o enr state nc us /ncwetlands DRAFT For all plans, including those that have already been submitted, specific items that will need to be addressed include 1) Details on how aquatic life will be allowed to pass through the weir structures 2) The development of a detailed management (operation and maintenance) plan for managing water levels, and training /education for those responsible for operating the weirs 3) Details on conservation easements. 4) A discussion on how mitigation activities may conflict with restrictions within the 200 foot buffer for the reservoir 5) The success criterion for hydrology should be modeled from a reference wetland. A better description of the success criterion for wetland hydrology is needed 6) Compare and contrast the costs and benefits between stream restoration and the ideas presented your proposal 7) A synopsis of efforts elsewhere in the US that resemble your proposal. Again, thank you for your patience. If you have any questions please contact me Cordially, Steven Kroeger cc Peter Colwell, MRO Jennifer Frye, WSRO Jeff Jerek, Wetland Restoration Program