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E al MOUNTAIN HOUSE PROPOSED ALTAMONT Hmows TENTATIVE MAP 4. ENVIRONMENTAL CHECKLIST <br /> 4.8 HYDROLOGY AND WATER QUALITY <br /> Less Than <br /> !f Potential SPIIIEIR Significant <br /> Significant Requires Impact Due New New <br /> Impact Additional to Mitigation Additional Additional <br /> 1 i Less Than Adequately Review:No Measures in Impact Not Mitigation <br /> 6i Significant Addressed in Significant Project Addressed in Measures <br /> Issue or No Impact SPIIIEIR impact Description SPIIIEIR Required <br /> 8. HYDROLOGY AND WATER <br /> QUALITY. Would the project. <br /> a) Violate any water quality standards ■ <br /> or waste discharge requirements? ❑ <br /> b) Substantially deplete groundwater ■ L Ll El El <br /> supplies or interfere substantially <br /> with groundwater recharge such that <br /> there would be a net deficit in <br /> aquifer volume or a lowering of the <br /> !i local groundwater table level(e.g., <br /> the production rate of pre-existing <br /> nearby wells would drop to a level <br /> k which would not support existing <br /> land uses or planned uses for which <br /> permits have been granted)? <br /> F <br /> c) Substantially alter the existing ■ El drainage pattern of the site or area, <br /> including through the alteration of <br /> the course of a stream or river,in a <br /> manner which would result in <br /> substantial erosion or siltation on-or <br /> off-Site? <br /> d) Substantially alter the existing ■ ❑ ❑ ❑ El ❑ <br /> drainage pattern of the site or area, <br /> y including through the alteration of <br /> the course of a stream or river,or <br /> substantially increase the rate or <br /> amount of surface runoff in a <br /> manner which would result in <br /> flooding on-or off-site? <br /> f e) Create or contribute runofl'water ■ El El El 110 which would exceed the capacity of11 <br /> existing or planned stormwater <br /> drainage systems or provide <br /> substantial additional sources of <br /> polluted runoff. <br /> f) Otherwise substantially degrade ■ ❑ ❑ F1 ❑ 11 <br /> water quality? <br /> g) Place housing within a 100-year ■ <br /> flood hazard area as mapped on a 11 El El Ll <br /> federal Flood Hazard Boundary or <br /> Flood Insurance Rate Map or other <br /> i flood hazard delineation map? <br /> h) Place within a 100-year flood hazard ■ ❑ ❑ El ❑ F <br /> area structures which would impede <br /> Fior redirect flood flows? <br /> f i <br /> �. 4-40 <br /> 1'-4 <br />