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SD-10 Site Design & Landscape Planning <br />Design iitg N'ew 17tstallations <br />Begin the development of a plan for the landscape unit with attention to the folloxNing general <br />principles: <br />¦ Formulate the plan oil the basis of clearly articulated community goals. Carefully identify <br />conflicts and choices between retaining and protecting desired resources and community <br />growth. <br />Map and assess land suitability for urban uses. Include the following; landscape features in <br />the assessment: wooded land, open unwooded land, steep slopes, erosion-prone soils, <br />foundation suitability,, soil suitability for waste disposal, aquifers, aquifer recharge areas, <br />wetlands, floodplains, surface waters, agricultural land:,, and various categories of urban <br />land use. When appropriate, the assessment can highlight outstanding local or regional. <br />resources that the community determines should be protected (e.g., a scenic area, <br />recreational area, threatened species habitat, farmland, fish run). Mapping and assessment <br />should recognize not only these resources but also additional areas needed for their <br />sustenance. <br />Project plan designs should conserve natural areas to the extent possible, maximize natural <br />water storage and infiltration opportunities, and protect slopes and channels. <br />Conserve Natural Areas during Landscape Planning <br />If applicable, the following items are required and must be linplemented in the site layout <br />during the subdivision design and approval process, consistent with applicable General Plan and <br />Local Area Plan policies: <br />¦ Cluster development on least-sensitive portions of a site while leaving the remaining land ill <br />a natural undisturbed condition. <br />• Limit clearing; and grading; of native vegetation at a site to the minimum amount needed to <br />build lots, allow access, and provide fire protection. <br />a M iximize trees and other vegetation at each site by planting; additional vegetation, clus_cring <br />tree areas, and promoting the, use of native and/or drought tolerant plants. <br />• Promote natural vegetation by using parking lot islands and other landscaped areas. <br />¦ Preserve riparian areas and wetlands. <br />AlaxirnizeNatur°al I4aterSlorageand lgfiltration Opportunities Within the flandsc(q)e I.sizit <br />¦ Promote the conservation of forest cover. Building; on ]arid that is already deforested affects <br />basin hydrology to a lesser extent than converting forested land. Lass of forest cover reduces <br />interception storage, detention in the organic forest floor layer, and water losses by <br />evapotranspiration, resulting in large peak runoff increases and either their negative effects <br />or the expertise of countering them with structural solutions. <br />¦ Maintain natural storage reser-oirs and drainage corridors, including depressions, areas of <br />permeable soils, swales, and intermittent streams. Develop and implement policies arid <br />2 of 4 California Stormwater BMR Handbook January 2003 <br />New Development and Redeveloprnent <br />wtiaw.cahrrbf)iaarldbooks.corn <br />20D-33