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40 <br /> 3) Method B - Stream Buffer Based on Slope and Groundcover <br /> STREAM BUFFER WIDTH (IN FEET) <br /> BASED ON SLOPE AND GROUNDCOVER <br /> Slope Value Type of Groundcover <br /> Grass Woods <br /> 2 to 4.9 100 50 <br /> 5 to 9.9 150 100 <br /> 10 to 14.9 200 100 <br /> 15 or greater 250 150 <br /> 'In addition to the buffer zone resulting from the calculations below, a stream buffer shall <br /> include any portion of a floodplain as defined in the Orange County Flood Damage <br /> Prevention Ordinance, by special survey by a registered engineer or surveyor, or by <br /> alluvial soils as designated in the Orange County Soils Survey. <br /> 'Tile required stream buffer zone shall not be limited to one calculation, but shall be <br /> based on calculations made at points where topographical and ground cover conditions <br /> change based on an analysis of the site. <br /> 17 <br />