Secondary and Cumulative Impacts Master Management Plan - 2014

Article 3 Zoning Districts 3-73 RCOD-2, Resource Conservation Overlay District 2

(2) Bridges, provided no reasonable alternative to their location in the buffer exists (3) Dam maintenance activities (4) Vegetated swales, provided: (a) no reasonable alternative to their location in the buffer exists; and (b) a stormwater management facility is installed to control nitrogen and attenuate flow before the conveyance discharges through the buffer (5) Drainage of a pond, provided a new vegetated special watershed buffer meeting the purpose and requirements of this Section is established along the new drainageway (6) Driveway crossings that access single-family dwellings, provided: (a) no reasonable alternative to their location in the buffer (including opportunity for shared driveways) exists; (b) buffer disturbance is no more than 60 feet wide [1]; (c) buffer disturbance is no more than 6,000 square feet in area; (d) the driveway crosses the buffer at an angle as close to 90 degrees as possible (and not less than 60 degrees); (e) side slopes do not exceed a 2:1 (horizontal to vertical) ratio (bridging and/or retaining walls may be used to meet this and the disturbance width standard); and (f) all culverts are designed and constructed for the 25-year storm event or as otherwise required by Wake County Environmental Services. (7) Utility lines, provided: (a) no reasonable alternative to their location in the buffer exists; (b) a line crossing the buffer is combined with other permitted buffer crossings where practicable; (c) buffer disturbance is not more than 40 feet wide; (d) woody vegetation is removed by hand (no land grubbing or grading); (e) vegetative root systems and stumps from cut trees are retained; (f) no rip rap is used unless necessary to stabilize a pole or tower; (g) active measures are taken after construction and during routine maintenance to ensure diffuse flow of stormwater through the buffer; (h) mats are used to minimize soil disturbance (in wetlands);

Wake County Unified Development Code 3-51