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O NE B RO A D WA Y P LA Z A P RO J E CT E I R A D DE N DU M CI T Y O F S A NT A A NA 5. Environmental Analysis Page 62 PlaceWorks The Certified EIR (Geology and So ils Section) found that the depth of groundwater in the vicinity of the Project Site is 80 to 85 feet below ground surface. The Approved Project would require foundation piles that could extend to depths of 60 to 80 feet below ground surface, which could extend into the groundwater. The Certified EIR identified a mitigation measure would reduce impacts to groundwater to a less than significant level. The Initial Study prepared for the Certified EIR found that the Project Site is not near a large body of wat er that would generate tsunamis or seiches. The Certified EIR determined that the Project Site is outside of an area that could flood. The Approved Project would not result in significant adverse impacts related to placement of structures in a flood zone. 5.10.2 Impacts Associated with the Proposed Project Would the Proposed Project: Environmental Issues Substantial Change in Project Requiring Major EIR Revisions Substantial Change in Circum-stances Requiring Major EIR Revisions New Information Showing New or Increased Significant Effects Less Than Significant Impact/No Changes or New Information Requiring Preparation of an EIR 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 that 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: (i) result in a substantial erosion or siltation on- or off-site; (ii) substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or offsite; (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 (iv) impede or redirect flood flows? x d) In flood hazard, tsunami, or seiche zones, risk release of pollutants due to project inundation? x 5 - 116