ORD-2007-217 -Amendents to the Soil Erosion and Sedimentation Control Ordinance

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Orange County SE & SC Ordinance October 23 2007 d. Newly constructed open channels in HQW zones shall be designed and constructed with side slopes no steeper than 2 horizontal to 1 vertical if a vegetative cover is used for stabilization unless soil conditions permit a steeper slope or where the slopes are stabilized by using mechanical devices, structural devices or other acceptable devices. In any event, the angle for side slopes shall be sufficient to restrain accelerated erosion. e. Ground cover sufficient to restrain erosion must be provided for any portion of a land disturbing activity in a HQW zone within 15 working days or 60 calendar days, whichever period is shorter, following completion of construction or development. E. Prior Plan Approval No person shall initiate any land- disturbing activity on a tract if more than 20,000 square feet are to be uncovered unless, thirty or more days prior to initiating the activity, an erosion and sedimentation control plan for such activity is filed with, approved by, and a Land Disturbing Permit obtained from the County. F. The land- disturbing activity shall be conducted in accordance with the approved erosion and sedimentation control plan. Section 8.1 Additional Standards for Land - Disturbing Activity in University Lake, Cane Creek, and Upper Eno Watersheds The provisions of Section 8 shall apply to land- disturbing activity within the University Lake, Cane Creek, and Upper Eno Watersheds. In addition, the design, construction, and maintenance of drainage systems in developments within the University Lake, Cane Creek, and Upper Eno Watersheds shall also be consistent with the following standards, and these standards shall control to the extent that they are more restrictive than those set forth in Section 8. Channeling Runoff - channeling runoff directly into water bodies shall be prohibited. Runoff shall be routed through swales and other systems designed to increase time of concentration, decrease velocity, increase infiltration, allow suspended solids to settle, and remove pollutants. Alteration of Watercourses - natural watercourses shall not be dredged, cleared of vegetation, deepened, widened, straightened, stabilized or otherwise altered except in accordance with an approved Erosion Control Plan. Water shall be retained or detained before it enters any natural watercourse in order to preserve the natural hydro - dynamics of the watercourse and to prevent sedimentation. Limit Land - Disturbing Activity - the area of disturbance by development shall be as small as practical.