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MouNTAiN Houss PROPosim,MA:HADO TEMATTVE MAP 4. ENvIRONFRiNTAL CHEc:xLisr 4.8 HYDRoLOOY AND WATER QUALITY Less Than Potential SPIIIEIR Significant Significant Requires Impact Due New New Impact Additional to Mitigation Additional Additional Less Than Adequately Review:No Measures In Impact No( Mitigation Stgnincanl Addressed in Significant Project Addressed in Measures lune or Nolmpacl SPIIIEIR Impact Description SPIIIEIR Required 8. HYDROLOGY AND WATER QUALITY. Would the project: a) Violate any water quality standards ■ ❑ F� or waste discharge requirements? b) Substantially deplete groundwater ■ supplies or interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table level(e.g., the production rate of pre-existing nearby wells would drop to a level which would not supportexisting land uses or planned uses for which permits have been granted)? c) Substantially alter the existing ■ drainage pattern of the site or area, including through the alteration of the course of a stream or river,in a manner which would result in : substantial erosion or siltation on-or off-site? d) Substantially alter the existing ■ ❑ El drainage pattern of the site or area, _ including through the alteration of the course of a stream or river,or - substantially increase the rate or amount of surface runoff in a manner which would result in flooding on-or off-site? e) Create or contribute runoff water . ❑ ❑ which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted tunofr.7 _. f) Otherwise substantially degrade ■ ❑ ❑ water quality? g) Place housing within a 100-year El■ flood hazard area as mapped on a federal Flood Hazard Boundary or Flood Insurance Rate Map or other flood hazard delineation map? h) Place within a 100-year flood hazard . ❑ ❑ ❑ ❑ ❑ area structures which would impede or redirect flood flows? 4-42