ORD-2007-017 - Sedimentation and Erosion Control Ordinance

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Orange County SE & SC Ordinance Sep"^--'~°~„~.-;a-~~ ,"^'Seotember 12.201)6 Discharge Point -means that point or points at which runoff leaves a tract of land. District -means the Orange Soil and Water Conservation District created pursuant to Chapter 139, North Carolina General Statutes. Diversion - a channel or a ridge or combination thereof which is constructed across sloping land either on the contour or at apre-determined grade. Its purpose is to intercept and divert surface runoff before it gains sufficient volume and velocity to cause erosion and convey the surface runoff to a protected area. Energy Dissipator - means a structure or a shaped channel section with mechanical armoring placed at the outlet of pipes or conduits to receive and break down the energy from high velocity flow. Erosion -means the wearing away of land surface by the action of wind, water, gravity, or any combination thereof. Ground Cover -means any natural vegetative growth or other material which renders the soil surface stable against accelerated erosion. Grouudfvater Recharge -the infiltration of water into the earth. It may increase the total amount of water stored underground or only replenish supplies depleted through pumping or natural discharge. High Quality Waters -means those classified as such in 15ANCAC 2B.0101(e) (5) - General Procedures, which is incorporated herein by reference to include further amendments pursuant to G.S. 150B-14(c). Explanatory Note: The complete official definition of High Quality Waters is contained in 15A NCAC 2B.0101(e) (S) -General Procedures. In general, High Quality Waters are defined by the Division of Environmental Management as those waters x"hich are: those rated as excellent based on biological and physical/chemical characteristics; native trout waters; primary or functional nursery areas; critical habitat areas; all water supply watersheds which are either classified as WS-I or WS-II or those for which a formal petition for reclassification as WS-I or WS-II has been received by the Division of Environmental Management; and all Class SA (shellfish) waters. High Quality Water (HQW) zones -means areas in the Coastal Counties that are within 575 feet of High Quality Waters and for the remainder of the state areas that are within one mile and drain to HQW's. Impervious Structure - is any structure which prevents free seepage of rainwater into the ground, including but not limited to buildings, paved roads, paved parking lots, airport runways, etc.