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City of Pleasanton—Merritt Property Project <br />15183 Consistency Checklist Consistency Checklist <br /> <br /> <br /> 129 <br />a, c, d, e) Water Quality, Erosion, Surface Runoff, Polluted Runoff, Inundation, Flooding, <br />and Water Quality Plan <br />Would the project: <br />a) Violate any water quality standards or waste discharge requirements or <br />otherwise substantially degrade surface or groundwater quality? <br />c) Substantially alter the existing drainage pattern of the site or area, <br />including through the alteration of the course of a stream or river or <br />through the addition of impervious surfaces, in a manner which would: <br />i) result in substantial erosion or siltation on- or off-site; <br />ii) substantially increase the rate or amount of surface runoff in a <br />manner which would result in flooding on- or off-site; <br />iii) create or contribute runoff water which would exceed the <br />capacity of existing or planned stormwater drainage systems or <br />provide substantial additional sources of polluted runoff; <br />iv) impede or redirect flood flows? <br />d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to <br />project inundation? <br />e) Conflict with or obstruct implementation of a water quality control plan or <br />sustainable groundwater management plan? <br />Summary of Housing Element Update FEIR <br />Water Quality Standards <br />The Housing Element Update FEIR indicated that future development <br />consistent with the Housing Element Update would involve grading, <br />excavation, and removal of vegetative cover that has the potential to result <br />in runoff that contains sediment and other pollutants that could degrade <br />surface and groundwater quality if not properly controlled. Furthermore, all <br />future development consistent with the Housing Element Update could add <br />additional areas of impervious surfaces within the City and could therefore <br />increase the volume of pollutants that are typically associated with urban <br />runoff into the stormwater. <br />The Housing Element Update FEIR concluded that compliance with <br />mandatory NPDES General Permit requirements, adherence to the Municipal <br />Code, and implementation of General Plan goals, policies, and actions