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MOUNTAIN HOUSE PROPOSED ALTAMONT HEIGHTS TENTATIVE MAP <br /> 4. ENVIRONMENTAL CHECKLIST <br /> 4.8 HYDROLOGY AND WATER QUALITY <br /> MA <br /> i rrrJ <br /> 1 Less Than <br /> - Potential SPIIIEIR Significant <br /> Significant Requires Impact nue New New <br /> Impact Additional to Mitigation Additional Additional <br /> F Less Than Adequately Review:No Measures in Impact Not Mitigation <br /> 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 /> F a) Violate any water quality standards ■ <br /> or waste discharge requirements? ❑ ❑ <br /> b) Substantially deplete groundwater ■ El F1supplies or interfere substantially <br /> Ll with groundwater recharge such that <br /> E there would be a net deficit in <br /> # y aquifer volume or a lowering of the <br /> _( local groundwater table level(e.g., <br /> the production rate of pre-existing <br /> nearby wells would drop to a level <br /> which would not support existing <br /> land uses or planned uses for which <br /> permits have been granted)? <br /> c) Substantially alter the existing ■ Ll El ❑ ElF1 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 ■ ❑ ❑ ❑ <br /> Ll <br /> drainage pattern of the site or area, <br /> 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 /> e) Create or contribute runoff water ■ Ll ❑ <br /> which would exceed the capacity of <br /> existing or planned stormwater <br /> drainage systems or provide <br /> substantial additional sources of <br /> polluted runoff? <br /> f) Otherwise substantially degrade ■ ❑ El F] ❑ El <br /> water quality? <br /> g) Place housing within a i00-year ■ E: ❑ El <br /> flood hazard area as mapped on a <br /> federal Flood Hazard Boundary or <br /> Fi Flood Insurance Rate Map or other <br /> flood hazard delineation map? <br /> h) Place within a 100-year flood hazard . ❑ ❑ ❑ ❑ ❑ <br /> area structures which would impede <br /> E or redirect flood flows? <br /> F ` 4-40 <br />