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HomeMy WebLinkAbout20191209 Ver 2_Restoration Plan.doc_20191122Restoration Plan PNG Line 204 Relocation Beaufort/Martin Counties, North Carolina The proposed project has been designed to avoid and minimize jurisdictional impacts where practicable. As part of mitigation for unavoidable impacts, the following plan shall be implemented to restore temporarily - affected wetlands and streams. This plan entails restoration of temporarily -disturbed areas to their original contours and conditions to the degree practicable upon project completion. Unless otherwise authorized by the appropriate permits, no fills or spoils of any kind will be permanently placed within wetlands or along the stream banks. Further, disturbed wetland areas and streambanks will be permanently stabilized using coir matting (with no plastic or nylon) and native vegetative cover. Proposed restoration activities will include the removal of placed fill material and restoration of original pre - disturbance contours. Excavated material shall be returned to the trench to the extent possible, and remaining excess material relocated and retained on an upland site. Excavated topsoil will be stockpiled separately, kept viable, and then replaced uniformly over the area of excavation from which it was removed. The native seed mix identified in Table 1 below will be utilized within temporarily -disturbed streambanks and riparian buffer areas. Table 1: Riparian Seed Mix Agrostis perennans Autumn bentgrass 15 Andropogon gerardii Big bluestem 10 Coreopsis lanceolata Lanceleaf coreopsis 10 Elymus virginicus Virginia wildrye 20 Juncus effusus Soft rush 5 Panicum virgatum Switchgrass 15 Rudbeckia hirta Blackeyed susan 10 Schizachyrium scoparium Little bluestem 5 Sorghastrum nutans Indian grass 5 Tripsacum dactyloides Eastern gamagrass 5 Riparian Seed Mix is to be applied to all disturbed streambanks and buffer areas. The recommended application rate: 20 lbs. per acre. The native seed mix identified in Table 2 below will be utilized within temporarily -disturbed wetlands. Table 2: Wetland Seed Mix Bidens aristosa Showy tickseed 7 Carex vulpinoidea Fox sedge 12 Dichanthelium clandestinum Deertongue 8 Elymus virginicus Virginia wildrye 20 Juncus effusus Soft rush 4 Panicum dichotomiflorum Smooth panicgrass 14 Panicum rigidulum Redtop panicgrass 8 Panicum virgatum Switchgrass 23 Polygonum pensylvanicum Pennsylvania smartweed 2 Sparganium americanum Eastern bur reed 2 Wetland Seed Mix is to be applied to all disturbed wetland areas. In the event of overlap, wetland mix (Table 2) will be used. The recommended application rate: 20 lbs. per acre. To provide quicker cover, the mixes specified in Tables 1 and 2 should also be augmented with the appropriate cover/companion species, as identified in Table 3. Table 3: Cover/Companion Crops Seca(e cerea(e Cereal or Early Spring or 30 Ibs/acre Grows 3-4' tall, but not a strong a Winter rye Fall com etitor. Lo(ium perenne Perennial rye Early Fall or 20-50% Shorter rye; lasts about 2 years, Spring then dies out. Uroc(oo ramose Brown Top Spring, Summer 20-50% Good germination; dies off with Millet frost; does not tolerate mowing. Substitutions to the riparian and wetland mixes identified in this restoration plan may be made with prior approval. Any substitutions shall consist of appropriate native species. Additional information related to streambank restoration activities is included on the Typical Stream and Wetland Crossing Details. Riparian and wetland seed mixes are available at: Mellow Marsh Farm 1312 Woody Store Road Siler City, N.C. 27344 919.742.1200 www.mellowmarshfarm.com