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Article 6: Development Standards 132 <br /> Section 6.15: Soil Erosion and Sedimentation Control266F <br /> (a) The angle for graded slopes and fills shall be no greater than the angle <br /> which can be retained by vegetative cover or other adequate erosion <br /> control devices or structures. <br /> (b) Slopes left exposed shall, within 21 Gale dad days Of,.,,„ pleb,, „f <br /> phase of grad; be planted or otherwise provided with ground cover, <br /> devices, or structures sufficient to restrain erosion, within the timelines as <br /> specified in the most current version304 of North Carolina#die-PIS <br /> Administrative Code Title 15A Chapter 4: Sedimentation Control. <br /> (C) The angle for graded slopes and fills must be demonstrated to be stable. <br /> T Stable is the condition where the soil remains in its original configuration, <br /> with or without mechanical constraints. <br /> M(d) Materials being used as fill shall be consistent with the most current <br /> version of North Carolina Administrative Code Title 15A Subchapter 13B <br /> Section .0562 (Beneficial Fill) unless the site is permitted to operate as a <br /> landfill. Not all materials described in Section .0562 may be suitable to <br /> meet geotechnical considerations of the fill activity and should be <br /> evaluated accordingly.3oe <br /> {LIL_Undisturbed Area <br /> Because soils which are seriously disturbed, even if re-vegetated, can generate <br /> nearly as much run-effstormwater runoff306 as paved areas, a portion of property <br /> being developed within watershed critical areas must remain undisturbed during <br /> construction. See Table 6.15.7.B.3: Undisturbed Area (below). <br /> DISTRICT UNDISTURBED AREA <br /> The area necessary to meet impervious surface <br /> requirements shall remain undisturbed during the <br /> UNIV-CA construction process. <br /> CANE-CA The area to remain undisturbed shall include portions <br /> U-ENO-CA of the lot utilized for stormwater infiltration. <br /> All clearing limits shall be clearly marked and <br /> observed. <br /> All other Watershed Overlay Districts As may be required pursuant to an approvedgrad*Rg <br /> LDP. <br /> M(4) Ground Cover <br /> (a) Whenever Land-Disturbing Activity is undertaken <br /> on a tract comprising more than 20,000 square feet, if more than 20,000 <br /> square feet are uncovered, the person conducting the land-disturbing. <br /> ast+vityLand-Disturbing Activity shall install such sedimentation and <br /> erosion control devices and practices as are sufficient to retain the <br /> sediment generated by the land-disc rbiRg aGtivi+„Land-Disturbing <br /> Activity within the boundaries of the tract during construction upon and <br /> development of said tract, and shall plant or otherwise provide a <br /> permanent ground cover sufficient to restrain erosion after completion of <br /> '0a For ground cover timelines-consistent reference to"most current version"of the NC Administrative Code Title <br /> 15A Chapter 4:Sedimentation Control and the NC Erosion Control Manual. <br /> "I Added language regarding fill materials, in conformance with current state Model Ordinance. <br /> 101 Consistent use of"stormwater runoff". <br /> Orange County, North Carolina—Unified Development Ordinance Page 6-124 <br />