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3 <br /> Administration Ordinance <br /> An Ordinance Amending the Zoning Ordinance of Orange County <br /> Bold = Proposed Text <br /> StFiketheugh = Deleted Text <br /> Section 1: Amend Article 22 DEFINITIONS by creating two new definitions as <br /> follows: <br /> Federal Emergency Management Agency (FEMA) —An <br /> independent agency of the federal government. <br /> Lot;Usable—The portion of a zoning lot unencumbered by stream <br /> buffers, conservation easements, drainage easements, public and <br /> private rights-of-way, access easements, and utility easements. Lot, <br /> Usable also excludes all areas within lots having slopes greater than <br /> 20%, all bodies of water including, but not limited to, ponds, lakes <br /> and reservoirs as well as the area within wildlife corridors as defined <br /> in the Land Use Element of the Orange County Comprehensive Plan. <br /> For calculation of Lot, Usable the maximum width of a wildlife <br /> corridor is 150 feet or the width of the stream buffer, whichever is <br /> greater. <br /> Section 2: Amend Section 6.23.7a and Article 22 DEFINITIONS of Stream Buffer to <br /> clarify that the stream buffer is not to be included within the floodplain. <br /> Stream Buffer—a stream buffer is an area of land adjacent to perennial <br /> and intermittent streams or FEMA identified floodplains,whichever is <br /> greater, which, except as permitted in Article 6.23.7 of this Ordinance, <br /> must remain undisturbed in its natural state. Perennial streams are shown <br /> as solid blue lines and intermittent streams as broken lines on the USGS <br /> Quadrangle maps. The stream buffer shall extend around the <br /> perimeter of all water bodies including ponds, lakes and reservoirs. <br /> Section 3: (page 6-41 —Zoning Ordinance) 6.23.7d. Calculating the Width of Stream <br /> Buffer <br /> Those streams identified by FEMA as having floodplains shall have <br /> stream buffers calculated from the outside edges of the floodplain. <br /> 1) How to Calculate Slope (See illustration attached) <br /> a. Draw aline 250' length perpendicular to the GtFea ' lines, at 200-foot <br /> horizontal intervals along the entire length of the outside edges of <br /> the stream, te the GtFeam, 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 /> ,: , <br /> G:robert/august2000ph/StreamBuffer0rdinance(Administration Ordinance) <br />