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HomeMy WebLinkAbout20200790 Ver 1_WRC Comments_202007149 North Carolina Wildlife Resources Commission 9 Gordon Myers, Executive Director July 14, 2020 Mr. David Brown U.S. Army Corps of Engineers, Regulatory Branch 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 SUBJECT: Foster Creek Stream Restoration Foster Creek, Henderson County Dear Mr. Brown: Biologists with the North Carolina Wildlife Resources Commission (NCWRC) reviewed an application to restore 2,740 ft of Foster Creek in Henderson County. Our comments on this application are offered for your consideration under provisions of the Clean Water Act of 1977 (33 U.S.C. 466 et. seq.) and Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d). Wild trout reproduction should not be impacted by the project, and a trout moratorium is not needed. However, the site immediately above the confluence with the Mills River, which is part of the Mills River Aquatic Habitat, a natural area rated as Very High by the NC Natural Heritage Program due to the richness of rare aquatic species it supports. Species in the vicinity of the confluence of Foster Creek with the Mills River include Appalachian Elktoe [Alasmidonta raveleniana, US Endangered (E), NC E], Slippershell [Alasmidonta viridis, US Federal Species of Concern (FSC), NC E], Creeper (Strophitus undulatus, NC Threatened), Eastern Hellbender [Cryptobranchus alleganiensis, US FSC, NC Special Concern (SC)], and Blotched Chub (Erimystax insignis, NC SR). Excellent sediment and erosion control are essential to minimize impacts to these important species. We are supportive of the project, as this reach of Foster Creek is eroding and contributing sediment to the Mills River. The application proposes to stabilize eroding reaches of stream with a various instream structures, including constructed riffles, cross -vanes, j-hooks, brush toe with geolifts, and riprap and boulder toe with geolifts. Banks will be graded and a native riparian buffer of 20-30 ft will be planted. Work will not be done in the dry, and flows will be diverted around work areas when equipment is working in the wet. New reaches of channel will be Mailing Address: Habitat Conservation • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 707-0220 • Fax: (919) 707-0028 Foster Creek Restoration Page 2 July 14, 2020 Foster Cr, Henderson County constructed off-line. If a backwater is formed by the Mills River, a turbidity curtain will be used at the bottom of the project. We offer the following recommendations to minimize impacts to the aquatic community: 1. In -channel work should be accomplished as quickly as possible and vigilance used in sediment and erosion control during site preparation, construction, and clean up. Disturbed areas should be seeded, mulched and/or matted as soon as possible, preferably at the end of each work day. At a minimum, disturbed areas should be stabilized within five working days or seven calendar days, whichever is shorter. 2. Special care should be used to reduce the potential for sediment loss from the site. 3. Work should be completed at low flows. 4. Any erosion control matting used should be free of nylon or plastic mesh, as this type of mesh netting frequently entangles wildlife and is slow to degrade, resulting in a hazard that may last for years. 5. As soon as a stream reach is taken off-line, any stranded animals (e.g., fish, salamanders, crayfish, aquatic insects) should be captured and relocated into the flowing stream. 6. If any hellbenders are found during project construction, animals should be captured in a bucket and relocated to the Mills River upstream of Foster Creek. Please notify Lori Williams (lori.williamskncwildlife.org) if animals are found. 7. Replace River Birch with another species (e.g., Sweet Birch), as River Birch is typically only found in large river floodplains. Thank you for the opportunity to review and comment on this project. Please contact me at (828) 400-4223 if you have any questions about these comments. Sincerely, Andrea Leslie Mountain Region Coordinator, Habitat Conservation Program ec: Zan Price, Jennings Environmental Kaylie Yankura, NC Division of Water Resources Byron Hamstead, US Fish and Wildlife Service Luke Etchison and Lori Williams, NCWRC