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61 <br /> simra <br /> 111 *6.23 Extra Requirements, for Protected Watershed <br /> *Amended Districts (PW-II', <br /> 7-6-82 . <br /> mia <br /> ill *6.23. 1 Stream Buffers Required in Protected Watersheds <br /> Within the Protected Watershed District, an area of <br /> mak <br /> land along perennial streams shall be required to <br /> remain in its natural state, unless the area is <br /> subject to serious erosion, in which case an <br /> F erosion resistant vegetative cover shall be <br /> mil <br /> ill established and maintained. Perennial streams are <br /> those streams in solid blue on the USGS Quadrangle <br /> map for Orange County. <br /> Ill a) Width 2f Buffer Calculated <br /> ‘111;0 The stream buffer area shall start at the outer <br /> ill edge of flood plain and be measured a distance of <br /> fifty (50) feet away from the floodplain plus an <br /> additional distance depending on the slope near the <br /> willii stream. The slope shall be calculated by measuring <br /> ill a distance 250 feet from the center of the stream, <br /> determining the average rise in elevation and <br /> multiplying that value by four. This value shall <br /> 1 ill be added to the minimum buffer of 50 feet to <br /> determine total width of buffer area required. The <br /> 1 imii <br /> ill maximum buffer in any case shall not exceed 150 <br /> feet. The floodplain is defined in the Orange <br /> County Flood Damage Prevention Ordinance, by <br /> special survey by registered engineers or <br /> 1 visa surveyors, by the alluvial soil as designated in <br /> III the Orange County soils survey, or through a site <br /> analysis by the Orange County Planning Staff. <br /> Slope shall be determined from the USGS Quadrangle <br /> II , map, by onsite measurements, or by special survey <br /> by registered engineers or surveyors. <br /> ' 1 b) Development Advisory Committee's Reiiew 21 Stream <br /> •Buffevi <br /> The Development Advisory Committee, established in <br /> 1 Iii Article 2.4.2, can review the buffer requirements <br /> for all developments and may recommend additional <br /> buffer area where necessary. <br /> c) PerTitted Uses. Within Stream Buffer Areas <br /> 111 The following uses are allowed as matter of right <br /> in stream buffers. All other uses are prohibited. <br /> 1. Above ground and buried utility lines for local <br /> distribution of electricity, telephone, and cable' <br /> television service, accessory and appurtenant <br /> apparatus such as poles, guy wires, transformers <br /> Ai <br /> 6-26 <br /> (k' <br /> I <br />