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• � i <br /> 2 4 <br /> Section E DESIGN GUIDELINES <br /> EA Determining Density or Lot Yield <br /> Overall density shall be based upon the mimmu n lot size requirements of the zoning district in which the Flexible <br /> Development is to be located and on the basis of a Conventional Subdivision or "Yield" Plan conforming to the <br /> regulations governing lot dimensions, land suitable for development, and street design. Although such plans shall be <br /> conceptual in nature and are not intended to involve significant engineering or surveying costs, they must be realistic. <br /> Potential building lots and streets must not be shown in areas that would not ordinarily be pemutted in a Conventional <br /> Plan. For example, such plans would include, at minimum,basic topography,wetland locations, 100-year floodplains, <br /> and slopes exceeding 25 percent in defining areas unsuited for development. <br /> lam <br /> lot <br /> x <br /> �S ` � • • at�n?3` a. • <br /> � � k;�' '. g�o R •fwdrlc Bois <br /> a a �3• %'+1/ •andarua b �slop�s bib%) <br /> • ° ` •straa�a and t outfit <br /> f �; ;.." •n:&owerop <br /> Halls Mill Inn: Conventional Subdivision or "Yield"Plan (Natural Lands Trust) <br /> On sites not served by public sewerage or a centralized private sewage tivatment facility, soil suability for individual <br /> septic systems shall be demonstrated either by a preliminary soil suitability analyses of ten to fifteen percent (10% to <br /> 15%)of the proposed lots; or provision of a map showing the location of soil types suited for septic systems as based <br /> on the OOn= Cho ,y_ N.C. Soil Smvev. Tlye map shall be prepared in consultation with the Soil Scientist of the <br /> Environmental Health Division of the Health Department. <br /> E.2 Design Process <br /> Flexible Developmwt subdivisions shall be designed around both the Primary and Secondary Conservation Areas,which <br /> together constitute the total required open space. The design process should therefore commence with the delineation <br /> of all potential open space, after which potential house sites are located. Following that, access road alignments are <br /> identified, with lot lines being drawn in as the final step. This "four-step" design process is further described below. <br /> • Open Space Designation: Daring the d= = all potential Conservation Areas, both Primary and <br /> Secondary, shall be identified using a Site Analysis Map. Primary Conservation Areas shall consist of those <br /> features described in Section B.2.b. above. Secondary Conservation Areas shall comprise at least half of the <br /> remaining land and shall mchrde the most sensitive and noteworthy natural, scenic, and cultural resources as <br /> described in Section B.2.c. above. <br /> Flexible Development 31 <br />