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NATIONWIDE URBAN RUNOFF PROGRAM (NURP). NATIONWIDE URBAN RUNOFF PROGRAM Urban Runoff Program developed by the Environmental Protection Agency to study stormwater runoff from urban development. ORDINARY HIGH WATER LEVEL (OHW). The highest water level elevation that has been maintained for a sufficiently long period of time to leave evidence upon the landscape. The OHW is commonly that point where the natural vegetation changes from predominantly aquatic to predominantly terrestrial. If an OHW has been established for a waterbody by the Minnesota Department of Natural Resources, it will constitute the OHW under this definition. OWNER. The person or party possessing the title of the land on which the construction activities will occur; or if the construction activity is for a lease, easement, or mineral rights license holder, the party or individual identified as the lease, easement, or mineral rights license holder; or the contracting government agency responsible for the construction activity. PUBLIC LINEAR PROJECT. A project involving a roadway, sidewalk, trail or utility not part of an industrial, commercial, institutional or residential development. RECONSTRUCTION. Removal of an impervious surface such that the underlying structural aggregate base is effectively removed and the underlying native soil exposed. SEASONAL HIGH WATER TABLE. The highest known seasonal elevation of groundwater as indicated by redoximorphic features such as mottling within the soil. SATURATED SOIL. The highest seasonal elevation in the soil that is in a reduced chemical state because of soil voids being filled with water. Saturated soil is evidenced by the presence of mottled features or other information. SEDIMENT CONTROL. Methods employed to prevent sediment from leaving the site. SEDIMENT CONTROL practices include silt fences, sediment traps, earth dikes, drainage swales, check dams, subsurface drains, pipe slope drains, storm drain inlet protection, and temporary or permanent sedimentation basins. SHORELAND. Land located within the following distances from the ordinary high water elevation of public waters: 1. land within 1,000 feet from the normal high watermark of a lake, pond or flowage; and 2. Land within 300 feet of a river or stream or the landward size of a floodplain delineated by ordinance on the river or stream, whichever is greater. STABILIZED. The exposed ground surface has been covered by appropriate materials such as mulch, staked sod, riprap, erosion control blanket, mats or other material that prevents erosion from occurring. Applying mulch, hydromulch, tackifier, polyacrylamide, or similar erosion prevention practices is not acceptable stabilization in temporary or permanent drainage ditches or areas where concentrated overland flow occurs. Grass seeding is not stabilization. STANDARD PLATES. General drawings having or showing similar characteristics or qualities that are representative of a construction activity or practice. DRAFT ORD 09-15 CHAPTER 1011STORMWATER & ESC ORDINANCE.DOCX 7/29