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Li 24 DEVELOPMENT CHARACTERISTICS PLANNING <br /> • <br /> I. Overview • <br /> A. An alternative land use planning approach which does not prescribe <br /> a certain arrangement of uses for an area. <br /> B. Main thrust is environmental suitability analysis wherein selected <br /> area characteristic (environmental & transportation in particular) <br /> are mapped individually and overlaid. <br /> C. Overlaying produces composite maps which highlight districts capable <br /> of supporting various types and intensities of development. <br /> D. Hierarchy of development intensity types is defined and allocated <br /> to appropriate districts. <br /> • <br /> • <br /> • <br /> II. Mapping - 2 general categories <br /> A. Physiographic Characteristics (Basic source on items 1 & 2 is 1978 <br /> • USGS Chapel Hill quad map) <br /> Attachment 1 1. Slope (important in determining development intensity) <br /> a. 0-7% - High to moderate intensity development <br /> b. 7-15% - Moderate to limited intensity development <br /> c. Over 15% - 'Severely limited development potential <br /> Attachment 2 2. Slope Orientation (important for energy conservation) <br /> • a. warm slopes (E, SE, S, SW) • <br /> • b. cold slopes (N, NE, W, NW) <br /> Attachment, 3 3. Woodlands (important for balanced ecology & aesthetics; main sources:) <br /> a. 1979 aerial photos <br /> b. 1975 aerial photos <br /> c. Field survey <br /> Attachment 4,4A 4. Soils (based on A Planning Guide to the Orange County, N.C. Soils Survey) <br /> a. desirable - types la and lc <br /> b. marginal - types 2a, 2c, and 3 <br /> • <br /> c. undesirable - types 4,5,8,9 and 10 <br /> B. Accessibility Characteristics <br /> 1. Based on highway travel time in.feet per minute (FPM) <br /> a. interstate - 4840 PPM (55MPH) <br /> b. arterial - 3960 PPM (45 MPH) <br /> c. collector - 3080 FPM (35 MPH) <br /> Attachment 5 2. Travel time contour maps produced for every major interchange <br /> and town center (activity node) in study area. <br /> Attachment 6 3. These maps are used to produce a composite map of the study area <br /> (relative accessibility levels map) where accessibility contours <br /> are grouped into 4 levels ( 1 = most accessible. ..4 = least <br /> accessible). <br /> * Kaminsky, Jacob. How to Evaluate a Development Proposal in Your Community. <br /> • Reston; Va. : Environmental Design Press, 1979. 174P. <br /> 132112111211101111111110••■ <br />