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significant natural or cultural resources, is defined and mapped. In the Stoney <br />Creek Basin, secondary conservation areas consist of hardwood forests, open <br />meadows, historic sites, and soils unsuitable for septic tanks. Once primary and <br />secondary conservation areas have been mapped, the areas most suitable for <br />development become evident because of their lack of resource constraints. <br />Step 3: Locate sites for residential uses <br />Identifying potential house site locations entails maximizing the number of lots that <br />will have views of or access to open space. No lots are placed in primary <br />conservation areas and, to the extent possible, lots are placed around but not in the <br />secondary conservation areas. An optimal design would give each house direct <br />access to an open space, either in front or back. Easements located between lots, <br />especially at the end of cul -de -sacs, are included to ensure maximum access to open <br />space for all homes on a street. <br />These design concepts are reflected in the density - neutral design for the Stoney <br />Creek Basin. No development is proposed within primary conservation areas. An <br />effort was made to minimize development within secondary conservation areas and <br />the cultural resources within them - -such as historical sites -- around which the land <br />use plan was designed. The number of lots located next to stream corridors, open <br />meadows and wooded hilltops were maximized to provide views, access to open <br />space, and access to environmental amenities. Easements at the end of cul -de -sacs <br />were included to facilitate access to open space areas. The design also reflects an <br />effort to design around adverse site features; setbacks from the railroad and <br />Interstate 85 were maintained to reduce potential noise and safety conflicts. <br />Lot sizes vary from approximately one - quarter to three - quarters of an acre. There <br />are two primary reasons for variable lot size. First, smaller lots provide the <br />flexibility needed to design around unique amenities and resources while <br />maintaining the ability to meet density requirements. Second, variation in lot size <br />enhances marketing potential by increasing the variety of available products at <br />different prices. <br />Step 4: Design roads and trails <br />Once open space has been identified and potential house sites located, the fourth <br />step involves determining the layout of street and trail systems. Road rights -of -way <br />are largely dictated by the location of home sites and by the need to respect existing <br />topography. <br />The design of the road network consists largely of curvilinear streets and cul -de- <br />sacs. This design approach allows maximum sensitivity to topographic features and <br />Stoney Creek Basin Area Plan, 23 <br />