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Article 6: Development Standards 82 <br /> Section 6.15: Soil Erosion and Sedimentation Control201 F <br /> (v) No land-disturbing activity shall be undertaken within a buffer <br /> zone adjacent to designated trout waters that will cause adverse <br /> temperature fluctuations, as set forth in 15 NCAC 28.0211 Fresh <br /> Surface Water Classification and Standards, in these waters. <br /> (2) Graded Slopes and Fills <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, withiR 21 GaleR ar.Joys Of GOMPletiOR of an„ <br /> phase of grad;p 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 version228 of the NC Erosion Control <br /> Manual. <br /> (3) Undisturbed Area <br /> Because soils which are seriously disturbed, even if re-vegetated, can generate <br /> nearly as much run-offstormwater runoff 229 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 /> TABLE 6.15.7.B.3: UNDISTURBED AREA <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 approved grading <br /> permit or erosion control plan LDP. <br /> (4) Ground Cover <br /> (a) Whenever land-disturbing activity is undertaken on a tract comprising <br /> more than 20,000 square feet, if more than 20,000 square feet are <br /> uncovered, the person conducting the land-disturbing activity shall install <br /> such sedimentation and erosion control devices and practices as are <br /> sufficient to retain the sediment generated by the land-disturbing activity <br /> 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 /> construction or development. <br /> 221 Consistent reference to"most current version"of the NC Erosion Control Manual. <br /> 229 Consistent use of"stormwater runoff". <br /> Orange County, North Carolina—Unified Development Ordinance Page 6-121 <br />