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Environmental Checklist <br />CEQA Compliance <br />Issues & Supporting Information Sources <br />Less Than <br />Significant <br />Potentially <br />with Less Than <br />Significant <br />Mitigation Significant No <br />Impact <br />Incorporated Impact Impact <br />Vlll Hydrology and Water Quality — Would the project: <br />A. Violate Regional Water Quality Control Board water <br />❑ <br />® ❑ ❑ <br />quality standards or waste discharge requirements? <br />B. Substantially deplete groundwater supplies or <br />❑ <br />❑ ® ❑ <br />interfere substantially with groundwater recharge <br />such that there would be a net deficit in aquifer <br />volume or a lowering of the local groundwater table <br />level (i.e., the production rate of pre-existing nearby <br />wells would drop to a level which would not support <br />existing land uses or planned uses for which <br />permits have been granted)? <br />C. Substantially alter the existing drainage pattern of <br />❑ <br />® ❑ ❑ <br />the site or area, including through the alteration of <br />the course of stream or river, in a manner, which <br />would result in substantial erosion or sitation on or <br />off-site? <br />D. Substantially alter the existing drainage pattern of <br />❑ <br />❑ ® ❑ <br />the site or area, including through the alteration of <br />the course of stream or river, or substantially <br />increase the rate or amount of surface runoff in a <br />manner, which would result in flooding on or off- <br />site? <br />E. Create or contribute runoff water which would <br />❑ <br />® ❑ ❑ <br />exceed the capacity of existing or planned <br />stormwater drainage systems or provide substantial <br />additional sources of polluted run-off? <br />F. Otherwise substantially degrade water quality? <br />❑ <br />® ❑ ❑ <br />G. Place housing within a 100 -year floodplain, as <br />❑ <br />❑ ❑ <br />mapped on a federal Flood Hazard Boundary or <br />Flood Insurance Rate Map or other flood hazard <br />delineation map? <br />H. Place within a 100 -year floodplain structures which <br />❑ <br />❑ ® ❑ <br />would impede or redirect flood flows? <br />I. Expose people or structures to a significant risk of <br />❑ <br />❑ ® ❑ <br />loss, injury or death involving flooding, including <br />flooding as a result of failure of a levee or dam? <br />J. Inundation by seiche, tsunami, or mudflow? <br />❑ <br />❑ ❑ <br />Potentially <br />Less Than Less Than No <br />07/23/10 «PADMJ0701\MND\3.0 Checklist.doc- <br />3-9 <br />20A-45 <br />