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j MOUNTAIN HOisSE PROPOSED AI.TAMONT HEIGHTS TENTATIVE MAF 4. ENVIttEJNMENTAL CHECKLIST <br /> 4.8 HYDROLOGY AND WATER QUALITY <br /> JfLess Than <br /> 111—� Potential SPIREIR Significant <br /> Significant Requires Impact Due New New <br /> Impact Additional to Mitigation Additional Additional <br /> 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 /> a) Violate any water quality standards <br /> 11 El El 11 11 <br /> or waste discharge requirements? ■ <br /> b) Substantially deplete groundwater ■ <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 /> 5 local groundwater table level(e.g., <br /> the production rate of pre-existing <br /> nearby wells would drop to a level <br /> 0 which would not support existing <br /> land uses or planned uses for which <br /> permits have been granted)? <br /> c) Substantially alter the existing ■ <br /> !! 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 /> 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 ■ ❑ ❑ ❑ <br /> which would exceed the capacity of <br /> existing or planned stormwater <br /> drainage systems or provide <br /> substantial additional sources of <br /> F! polluted runoff? <br /> f) Otherwise substantially degrade ■ ❑ L ❑ <br /> water quality? <br /> Fi g) Place housing within a 100-year ■ <br /> flood hazard area as mapped on a <br /> federal flood Hazard Boundary or <br /> Flood Insurance Rate Map or other <br /> F1 flood hazard delineation trap? <br /> h) Place within a 100-year flood hazard ■ ❑ ❑ <br /> area structures which would impede <br /> fior redirect flood flows? <br /> Fi4-40 <br />