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HomeMy WebLinkAbout20070741 Ver 2_Staff Report Annino, Amy M_20210914® North Carolina Wildlife Resources Commission Cameron Ingram, Executive Director September 23, 2021 Mr. David Brown U.S. Army Corps of Engineers, Regulatory Branch 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 SUBJECT: Wade Hampton Golf Club Replacement of Water and Sewer Crossing Whitewater River, Jackson County Dear Mr. Brown Biologists with the North Carolina Wildlife Resources Commission (NCWRC) reviewed an application to temporarily impact 25 ft of the Whitewater River in Jackson 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). Brook Trout are found in the vicinity of the project, and in -channel activities should be avoided between October 15 and April 15 to minimize impacts to trout reproduction. In addition, Chauga Crayfish (Cambarus chaugensis, NC Special Concern) is found downstream of the project area. Effective erosion and sediment control on site is important to conserve habitat for these species. Existing above ground water and sewer lines cross the Whitewater River, and the application proposes to replace these under the stream bed via trench cut. Work would be done in the dry. In addition, approximately 40 ft of stream bank would be stabilized with riprap. It appears that there is existing erosion on the NC 107 side (right bank) of the stream, and as there is little room to work, we do not object to the use of riprap on this side. However, there is existing native vegetation on the left bank, which doesn't appear to be eroding. We recommend against using riprap on this side and recommend planting native woody vegetation instead. We recommend the following to minimize impacts to wildlife and their habitats: 1. In -channel activities should be avoided between October 15 and April 15 to minimize impacts to Brook Trout reproduction. 2. 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. Mailing Address: Habitat Conservation • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 707-0220 • Fax: (919) 707-0028 Wade Hampton Water & Sewer Crossing Page 2 September 23, 2021 Whitewater River, Jackson Co Disturbed areas should be seeded, mulched and/or matted as soon as possible, preferably at the end of each workday. The stream channel at the crossings should be restored to near pre -disturbance conditions. Channel dimensions should mimic the existing dimensions, and the stream bed should set be at the pre-existing elevation. At least 6-8 inches of natural bed material should be placed on top of the restored stream channel bed; this bed material should mimic that which is found in the stream bed. 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. Specifications on seed mixes have not been provided. Tall Fescue and Lespedeza should be avoided, and a quick growing seed such as Wheat, Rye Grain or Oats is recommended for temporary seed. Perennial native grasses and wildflowers can be added to the seed mix in order to provide a more permanent herbaceous cover. 6. Riprap should not be used on the left bank of the stream, which is currently forested. Instead, native woody vegetation should be used to permanently stabilize disturbed banks. Thank you for the opportunity to review and comment on this project. Please contact meat (828) 400-4223 if you have any questions about these comments. Sincerely, Andrea Leslie Mountain Region Coordinator, Habitat Conservation Program ec: Victor Lofquist, Lofquist & Associates Kaylie Yankura, NC Division of Water Resources