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Potentially Less Than Less Than Analyzed <br /> Significant Signification Significant No In The <br /> g Mitigation g <br /> Impact Incorporated Impact Impact Prior EIR <br /> X. HYDROLOGY AND WATER QUALITY. <br /> Would the project: <br /> a) Violate any water quality standards or waste discharge <br /> requirements or otherwise substantially degrade surface or ❑ 1:1 El1:1ground water quality? <br /> b) Substantially decrease groundwater supplies or interfere <br /> substantially with groundwater recharge such that the <br /> project may impede sustainable groundwater ❑ ❑ ❑ ❑X ❑ <br /> management of the basin? <br /> c) Substantially alter the existing drainage pattern of the site <br /> or area, including through the alteration of the course of a <br /> stream or river or through the addition of impervious ❑ ❑ ❑ ❑ <br /> surfaces, in a manner which would: <br /> i) result in substantial erosion or siltation on-or off-site; ❑ ❑ ❑ ❑X ❑ <br /> ii) substantially increase the rate or amount of surface <br /> runoff in a manner which would result in flooding on- 1:1 El 1:11:1or off-site; <br /> iii) create or contribute runoff water which would exceed <br /> the capacity of existing or planned stormwater <br /> drainage systems or provide substantial additional ❑ ❑ ❑ Z [] <br /> sources of polluted runoff; or <br /> iv) impede or redirect flood flows? ❑ ❑ ❑ ❑ ❑ <br /> d) In flood hazard, tsunami, or seiche zones, risk release of <br /> pollutants due to project inundation? ❑ ❑ 0 [] ❑ <br /> e) Conflict with or obstruct implementation of a water quality <br /> control plan or sustainable groundwater management ❑ L] ❑ ❑ <br /> plan? <br /> Impact Discussion: <br /> a-e) The project site is located in the Flood Zone X, 0.2 percent annual chance of flood designations. A referral has been <br /> sent to the Department of Public Works, Flood Control Division for comments. If approved, any new developments <br /> will have to comply with Development Title Section 9-1605 regarding flood hazards. <br /> The project site is located approximately 3 miles south of French Camp Slough, and approximately 1.7 miles east <br /> of the San Joaquin River. The proposed project will not violate any water quality standards or waste discharge <br /> requirements or otherwise substantially degrade surface or ground water quality, conflict with or obstruct <br /> implementation of a water quality control plan or sustainable groundwater management plan. <br /> The project will not substantially decrease groundwater supplies or interfere substantially with groundwater <br /> recharge because operations are unmanned and very little water will be used. The project will not substantially <br /> alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or <br /> river or through the addition of impervious surfaces, in a manner which would result in substantial erosion or <br /> siltation on-or off-site; substantially increase the rate or amount of surface runoff in a manner which would result <br /> in flooding on-or off-site; create or contribute runoff water which would exceed the capacity of existing or planned <br /> stormwater drainage systems or provide substantial additional sources of polluted runoff; or impede or redirect <br /> flood flows. Additionally, the proposed project would not risk release of pollutants in flood hazard, tsunami, or <br /> seiche zones. <br /> 16 <br />