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r <br /> p <br /> Ordinance 4 <br /> the stream, te the stream, or the outer edge of the FEMA floodplain, <br /> whichever is greater. <br /> b. Determine the elevation at either the stream bank itself(1) or the outer <br /> edge of the FEMA floodplain, whichever is highest, and at the point <br /> 250' from the stream or FEMA floodplain, whichever is applicable, <br /> along the perpendicular line (2). <br /> c. Subtract (1) from (2). <br /> d. Divide c. by 250. <br /> e. Multiply d. by 100. <br /> f. Perform this calculation for both sides of the stream or floodplain. <br /> (See Attachment A for example of how the calculations shall be <br /> performed) <br /> Hereafter, the number derived in e. will be referred to as "slope value". <br /> 2) Method A— Stream Buffer biased on Slope and Groundcover <br /> The width of the buffer shall be a minimum of fifty (50)feet from each <br /> edge of the floodplain. , In addition <br /> to the fifty (50) foot buffer, an additional 15 feet shall be added to the <br /> 50-foot buffer (65 feet total) where the slope value is less than 7.5%, <br /> as measured 250 feet from the edge of the floodplain. For slope <br /> values 7.5% and greater, as measured 250 feet from the edge of the <br /> floodplain, an additional 30 feet shall be added to the 50-foot buffer <br /> (80 feet total). These calculations shall be made from each side of <br /> either the stream bank or floodplain, whichever is greater. <br /> Section 4: Amend Detailed Table of Contents Section 6.24 to read as follows: <br /> Additional Requirements for Lots Outside of Watershed Protection <br /> Areas <br /> Create new Section 6.24.1 to include a minimum stream buffer for areas <br /> outside of Orange County Watershed Protection Overlay Districts to read <br /> as follows: <br /> In areas not identified on the Official Zoning Atlas as Watershed <br /> Protection Overlay Districts, a stream buffer a minimum of 50 feet in <br /> width shall be established along both sides of perennial streams and <br /> intermittent streams, or along the FEMA identified floodplains, <br /> whichever is greater. Perennial streams are those streams shown as <br /> solid blue lines, and intermittent streams are those streams shown <br /> as broken blue lines on the USGS Quadrangle maps for Orange <br /> County. The stream buffer shall extend around the perimeter of all <br /> water bodies including ponds, lakes and reservoirs if any portion of <br /> the stream buffer of a perennial or intermittent stream touches the <br /> water body. <br /> 4 <br />