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15 <br />Manual (July 2006) shall be utilized to control sedimentation during <br />construction. <br />a. Floating skimmers, such as Faircloth skimmers or equivalent, must <br />be utilized in each basin. <br />b. Skimmers must dewater from the surface within 24 to 72 hours, <br />and the orifice size of the skimmer must be correctly sized to obtain <br />the appropriate discharge rate. <br />c. Supporting engineering calculations will be submitted with the <br />erosion control plan. <br />3. Compliance with erosion control requirements shall be performance based. <br />BRA shall install and maintain devices to adequately maintain sediment on- <br />site. Additional controls will be required if off--site sedimentation occurs, even if <br />the site is in compliance with the approved plan, <br />4. BRA shall collaborate with County staff during the erosion control plan design <br />process. To encourage this, a minimum of one (1)pre-application meeting with <br />erosion control staff will be conducted prior to submittal of the ECP, and apre- <br />construction conference will be conducted prior to land disturbance activities, <br />5. BRA shall adhere to the maximum slope grading standards of 3:1 per Orange <br />County regulations. <br />In cases where a different slope is required to adhere to other local and State <br />requirements, most notably NC DOT driveway access requirements, or a flatter <br />slope is deemed more viable to avoid the wholesale grading of the properly or <br />removal of significant vegetation, BRA has the ability to observe a maximum <br />slope ratio of 2:1 so long as: <br />a. BRA can demonstrate on a formally submitted site plan as well as <br />within the grading plan that the reduction will be compliant with the <br />County grading and erosion control standards and will not create <br />unnecessary interior, or off-site, impacts <br />b. That adherence to the established 3:1 slope standard will require <br />excessive grading of the properly, <br />c. That adherence to the established 3:1 slope standards will result in <br />higher velocity stormwater runoff, <br />6. BRA shall ensure that any grading activity will be conducted in such a manner <br />that existing vegetation, identified as being located within protected buffer areas, <br />will be preserved and maintained on the property <br />7. BRA shall utilize the natural shape of the land with minimal grading to locate <br />features in a way that minimize impacts on and off the site. <br />8. BRA shall adhere to NC DOT maximum slope standards for driveways and <br />access drives of a two percent (2%) minimum to a twelve percent (12%) <br />maximum slope where it can be demonstrated on a site plan and on the grading <br />