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*6.23 Extra Requirements For Protected Watershed Districts (PW-II) <br /> *6.23.1 Stream Buffers Required in Protected Watersheds <br /> Within the Protected Watershed District, an area of land along <br /> preanial streams shall be required to remain in its natural <br /> state, unless the area is subject to serious erosion in which <br /> case an erosion resistant vegetative cover shall be established <br /> and maintained. Perennial streams are those steams in solid <br /> blue on the USGS Quadrangll map for Orange County. <br /> *6.23.1 a) Width of Buffer Calculated <br /> The stream buffer area X7.1 start at the outer edge of flood <br /> plan and be measured a distance of fifty (50) feet away from <br /> the flood plain plus an additional distance depending on the <br /> slope near the stream. The slope shall be calculated by measur <br /> ing a distance 250 feet from the center of the stream, determin <br /> lag the average rise in elevation and multiplying that value by <br /> four. This value shall be added to the minimum buffer of 50 fei <br /> to determine total width of buffer area required. The maximum <br /> buffer in any case shall not exceed 150 feet. The flood plain <br /> is defined in the Orange County Flood Damage Prevention Ordinary <br /> by special survey by registered engineers or suveyors, by the <br /> alluvial soil as designated in the Orange County solid survey, <br /> or through a site analysis by the Orange County Planning Staff. <br /> Slope shall be determined from the USGS Quadrangle map, by on- <br /> site measurements, or, by special survey by registered engineer; <br /> ! or suveyors. <br /> * 6.23.1 b) Development Advisory Committee's Review of Stream Buffers <br /> 3 <br /> The Development Advisory Committee established in Article <br /> 2.4.2, can review the buffer requirements for all develop- <br /> ments and may recommend additional buffer area where necessary. <br /> *6.23.1 c) ! Permitted Uses Within Stream Buffer Areas <br /> The following uses are allowed as a matter or right in <br /> stream buffers. All other uses are prohibited. <br /> 1. Above ground and buried utility lines for local distri- <br /> bution of electricity, telephone, and cable television <br /> service, accessory and appertent apparatus such as <br /> poles, guy wires , transformers and swtiching boxes . <br /> 2. Bona fide farms except any use of farm property for <br /> non-farm purposes . <br /> 3. Neighborhood utility facilities located within a public <br /> right of way with the permitssion of the owner of the <br />