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SAN LEANDRO SHORELINE DEVELOPMENT EIR ADDENDUM PROJECT CITY OF SAN LEANDRO May 2022 Page 37 4.10 HYDROLOGY AND WATER QUALITY 4.10.1 IMPACTS ASSOCIATED WITH THE MODIFIED PROJECT Would the project: Environmental Issues Substantial Change in Project Requiring Major EIR/MND Revisions Substantial Change in Circumstanc es Requiring Major EIR/MND Revisions New Information Showing New or Increased Significant Effects Less Than Significant Impacts/No Changes or New Information Requiring Preparation of a Subsequent EIR/MND No Impact a) Violate any water quality standards or waste discharge requirements or otherwise substantially degrade surface or ground water quality? x b) Substantially decrease groundwater supplies or interfere substantially with groundwater recharge such the project may impede sustainable groundwater management of the basin? x c) Substantially alter the existing drainage pattern of the site or area, including through the alteration of the course of a stream or river or through the addition of impervious surfaces, in a manner which would: x i) result in substantial erosion or siltation on- or off-site; x ii) substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or offsite; x iii) create or contribute runoff water which would exceed the capacity of existing or planned stormwater drainage systems or provide substantial additional sources of polluted runoff; or; x iv) impede or redirect flood flows; x d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? x