Agenda - Public Works Committee - 10/19/2010

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control plan, except for the emergency. If such a plan would have been required, then the disturbed land area shall be shaped and stabilized in accordance with the city's requirements as soon as possible. NPDES — National Pollutant Discharge Elimination System (NPDES) as established pursuant to 33 USC § 1342 (b) to regulate discharges of Pollutants to the waters of the Unites States. NPDES Permit — A NPDES stormwater discharge permit that is issued by the Minnesota Pollution Control Agency (MPCA) to regulate discharges of Pollutants to waters of the United States, whether the permit is applicable to an individual, group or general area wide basis. Ordinary High Water Mark - This is generally the boundary elevation where the vegetation changes from predominately aquatic (Where "aquatic" broadly means that the vegetation can survive moist conditions.) to terrestrial. This elevation delineates the highest water level, which has been maintained for a sufficient period of time to leave evidence upon the landscape, commonly that point where the natural vegetation changes from predominantly aquatic to predominantly terrestrial. Water often reaches this elevation in spring. For rivers and streams the ordinary high water mark is usually the top of the bank. It is less well defined for lakes and wetlands. The definition in Minnesota Statute 103G.005, subdivision 14 says that the ". .. "Ordinary high water level" means the boundary of water basins, watercourses, public waters, and public waters wetlands, and: A.) the ordinary high water level is an elevation delineating the highest water level that has been maintained for a sufficient period of time to leave evidence upon the landscape, commonly the point where the natural vegetation changes from predominantly aquatic to predominantly terrestrial; B.) for watercourses, the ordinary high water level is the elevation of the top of the bank of the channel; and; C.) for reservoirs and flowages, the ordinary high water level is the operating elevation of the normal summer pool. The term "ordinary high water mark" is further defined in Minnesota Rule 6120.2500, subpartl 1. Ordinary high water marks are determined by the Minnesota Department of Natural Resources' area hydrologist. Paved Surface - A constructed hard, smooth surface made of asphalt, concrete or other pavement material. Examples include, but are not limited to, roads, sidewalks, driveways and parking lots. Permanent Cover - Means "final stabilization." Examples include grass, gravel, asphalt, and concrete. Pervious Surface - A surface that permits the entry of water into the soil. Examples include lawns, planting beds and paving brick surfaces designed to infiltrate water into the underlying soils. Pollutant — Pollutant means: (i) toxic or hazardous substances, wastes or contaminants (including, without limitation, asbestos, urea formaldehyde, the group of organic compounds known as polychlorinated biphenyls, petroleum products including gasoline, fuel oil, crude oil Page 4 of 21 Storm Water Pollution Control Ordinance November 8, 2006