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HomeMy WebLinkAbout20180727 Ver 1_WRC Comments_201806251�1 North Carolina Wildlife Resources Commission 0 Gordon Myers, Executive Director June 25, 2018 Mr. David Brown U.S. Army Corps of Engineers, Regulatory Branch 151 Patton Avenue, Room 208 Asheville, North Carolina 28801-5006 SUBJECT: Multi -area Streambank Restoration Projects, Henderson County Cherry Branch Site, Comet Drive Site, Meadowbrook Terrace Site, Oaks and Haywood Townes Sites, Patton Park Site, Allen Branch at Lakewood Road Site, Allen Branch at Highway 64 Site, Spartanburg Highway Site, Dear Mr. Brown: Biologists with the North Carolina Wildlife Resources Commission (NCWRC) reviewed applications to stabilize 7,383 feet stream, including Allen Branch and unnamed tributaries (UTs), Britton Creek and UTs, Cherry Branch and a UT to King Creek, which will involve temporary impacts to 0.03 acre of wetland, in Henderson County. Our comments on these applications 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). Project activities should not impact wild trout spawning, and no trout moratorium is required. However, there are some rare species that could be impacted by project activities. The projects that occur on in the Britton Creek watershed (Comet Drive Site, Meadowbrook Terrace Site, The Oaks/Haywood Townes Site, and Patton Park Site) drain to Mud Creek, which hosts the Southern Blotched Chub [Erimystax insignis eristigma, US Federal Species of Concern, NC Significantly Rare (SR)] and a rare mayfly (Macdunnoa brunnea, NC SR). The projects that occur in the Allen Branch watershed (Allen Branch at Hwy 64 Site, Allen Branch at Lakewood Road Site) drain to Clear Creek, which contains the Southern Blotched Chub, the Creeper (Strophitus undulatus, NC T), and another rare mayfly (Tsalia berneri, NC SR). The Spartanburg Highway Site is in the vicinity of the Southern Blotched Chub habitat, as well. These rare species are sensitive to sediment, and special care should be taken to minimize sediment loss from the projects. Mailing Address: Habitat Conservation • 1721 Mail Service Center • Raleigh, NC 27699-1721 Telephone: (919) 707-0220 • Fax: (919) 707-0028 Multi -site Stabilization Page 2 June 25, 2018 Hendersonville, Henderson County The projects are meant to stabilize stream reaches that are unstable and threatening sanitary sewer infrastructure and adjacent property. NCWRC supports the approach to these projects, as the designs generally use natural channel design elements as opposed to bank hardening, such as bank grading, stream profile grading, in -stream structures (constructed riffles, vanes), geolifts, brush mattresses, invasive species removal, and native species planting. Work will be performed in the dry. 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. Areas that will be treated for Japanese Knotweed should have follow-up treatment for several years to eliminate this invasive species. 3. Little information is provided on planted buffer width. We recommend that a woody buffer as wide as possible as infrastructure allows be planted to ensure project success. A wide forested buffer can ensure greater bank stability, filter overland pollutants, and provide habitat for birds and other wildlife. 4. Remove as few native trees and shrubs as possible when constructing each project. This is especially important where a healthy buffer is present, such as at the Allen Brach at Lakewood Road Site. 5. Given the urban nature of these watersheds, designs should take into consideration watershed build -out hydrology and the erosive and flashy nature of stormflows. 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: Scott Gregory, Wildlands Engineering Andrew Moore, NC Division of Water Resources Byron Hamstead, US Fish and Wildlife Service