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HomeMy WebLinkAbout20121081 Ver 2_WRC comments_201906111�1 North Carolina Wildlife Resources Commission 0 Gordon Myers, Executive Director June 11, 2019 Ms. Amanda Fuemmeler U.S. Army Corps of Engineers, Regulatory Branch 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 SUBJECT: Middle Fork Greenway Phase 4 Middle Fork South Fork New River and unnamed tributaries, Watauga County Dear Ms. Fuemmeler: Biologists with the North Carolina Wildlife Resources Commission (NCWRC) reviewed an application to stabilize 157 feet of the Middle Fork South Fork New River, culvert 43 ft of an unnamed tributary (UT) to Elrod Br and UT to Middle Fork South Fork New River, and temporarily impact another 60 ft of stream to construct a greenway in Watauga 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). There are Brown Trout and Rainbow Trout in the vicinity of the project, and in -stream activities should be avoided between October 15 and April 15 in order to minimize impacts to trout reproduction. The site is within the South Fork New River Aquatic Habitat, a natural area designated by the NC Natural Heritage Program and rated Exceptional due to the rich aquatic community it supports, which includes the following rare species in the vicinity of the project: Tonguetied Minnow [Exoglossum laurae, NC Significantly Rare (SR)], Kanawha Darter (Etheostoma kanawhae, NC SR), and Kanawha Minnow (Phenacobius teretulus, NC SR). Eastern Hellbender (Cryptobranchus alleganiensis, US Federal Species of Concern, NC Special Concern) is likely present just downstream of the project area, as well. These rare species are especially sensitive to sediment, and excellent erosion and sediment control is essential to minimize impacts to these species. Impacts are associated with the construction of a 4,275 -ft long 10 -ft wide gravel trail that runs along the Middle Fork South Fork New River. The greenway is at least 25 ft away from the river for approximately two-thirds of its length; in other areas, it is closer due to slope and ADA - accessibility constraints. Five permanent stream crossings on tributaries to the Middle Fork are Mailing Address: Habitat Conservation • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 707-0220 • Fax: (919) 707-0028 Middle Fk Greenway Phase 4 Page 2 June 11, 2019 Middle Fork SF New River, Watauga County proposed, with 3 out of 5 being bridges and the remaining 2 being arch reinforced concrete pipe culverts. A 157 -ft section of the Middle Fork would be stabilized using 2 j -hooks, boulder toe, toe wood, bank sloping, and native planting. A temporary crossing on the Middle Fork is proposed to carry construction materials for the stabilization. The thalweg will be diverted away from work areas (toe wood, j -hook tie-in, and boulder toe areas) with a coffer dam. 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. 2. Disturbed areas as a result of greenway construction should be stabilized as soon as possible with straw and temporary seed; plans note that a native perennial seed mix will be applied as well. 3. 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. 4. In -stream work should be avoided between October 15 and April 15 to minimize impacts to wild trout. Thank you for the opportunity to review and comment on this project. Please contact me at (828) 803-6054 if you have any questions about these comments. Sincerely, Andrea Leslie Mountain Region Coordinator, Habitat Conservation Program ec: Joe Furman, Watauga County Planning and Inspections Carrie Caviness, Interface Environmental Consulting Sue Homewood, NC Division of Water Resources Kin Hodges and TJ Johnson, NCWRC Byron Hamstead, US Fish and Wildlife Service