28-14 Amend Chp. 1339 Storm Water Mgmt

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(ss) SEDIMENT BASIN means a temporary Settling Pond that releases runoff at a controlled rate. It is designed to slowly release runoff, detaining it long enough to allow most of the sediment to settle out of the water. The outlet struc- ture is usually a designed pipe riser and barrel. The entire structure is removed after construction. Permanent storm water detention structures can be modified to function as temporary Sediment Basins. (ft) SEDIMENT POLLUTION means a failure to use management or conserva- tion practices to control wind or water erosion of the soil and to minimize the degradation of water resources by soil sediment in conjunction with land grad- ing, excavating, filling, or other soil disturbing activities on land used or being developed for commercial, industrial, residential, or other purposes. (no) SENSITIVE AREA means an area or water resource that requires special management because of its susceptibility to sediment pollution, or because of its importance to the well -being of the surrounding communities, region, or the state and includes, but is not limited to, the following: (1) Ponds, wetlands or small lakes with less than five acres of surface area; (2) Small streams with gradients less than ten feet per mile with average annual flows of less than 3.5 feet per second containing sand or gravel bottoms; (3) Drainage areas of a locally or Ohio designated Scenic River; or (4) Riparian and wetland areas. (w) SETTLING POND means a runoff detention structure, such as a Sediment Basin or Sediment Trap, which detains sediment -laden runoff, allowing sedi- ment to settle out. (ww) SHEET FLOW means water runoff in a thin uniform layer or rills and which is of small enough quantity to be treated by sediment barriers. (xx) SLIP means a landslide as defired under "Landslides" (yy) SLOUGHING means a slip or downward movement of an extended layer of soil resulting from the undermining action of water or the earth disturbing ac- tivity of man. (zz) SOIL means erodible earth material consisting of minerals and/or organics. (aaa) SOIL CONSERVATION SERVICE, USDA means the federal agency now titled the "Natural Resources Conservation Service," which is an agency of the United States Department of Agriculture. (bbb) SOIL EROSION AND SEDIMENT CONTROL PLAN means a written and/or drawn soil erosion and sediment pollution control plan to minimize ero- sion and prevent off -site sedimentation throughout all earth disturbing activities on a development area. (ccc) SOIL EROSION AND SEDIMENT CONTROL PRACTICES means conservation measures used to control sediment pollution and including struc- tural practices, vegetative practices and management techniques.