§ 10.6. Standards.

10.61

Mandatory Standards. No land disturbing activity to these provisions and guidelines shall be undertaken except in accordance with the following requirements:

10.611

No land disturbing activity shall be permitted in proximity to a lake, natural watercourse, or adjacent property where applicable unless a buffer zone is provided along the boundary of sufficient width to confine visible siltation and/or prevent erosion, provided that the land disturbing activity is not in connection with the construction of facilities to be located on, over, or under a lake, natural watercourse, or adjacent property.

10.612

The angle for graded slopes and fills shall be no greater than the angle which can be retained by vegetative cover or other adequate erosion control devices or structures. In any event, slopes left exposed will, within 30 working days of completion of final grading, be planted or otherwise provided with ground cover, devices, or structures sufficient to restrain erosion.

10.613

Whenever land disturbing activity is undertaken on a tract comprising more than one acre, if more than one contiguous acre is uncovered, a ground cover sufficient to restrain erosion must be planted or otherwise provided within 30 working days on that portion of the tract upon which further active construction is not being undertaken, provided, that this activity shall not apply to cleared land forming the basin of a reservoir later to be inundated.

10.62

Design and Performance Standards. Erosion and sediment control measures, structures, and devices shall be so planned, designed, and constructed as to provide control from the calculated peak rates of runoff from a ten-year frequency storm. Runoff rates may be calculated using the procedure in the USDA, Natural Resources Conservation Services "National Engineering Field Manual for Conservation Practices," or other acceptable calculation procedures. Runoff computations shall be based on rainfall data published by the National Weather Service for the area.