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e) All of the housing sites identified in this Element would be served by public sewer systems. Septic tanks would not be <br />permitted. The housing sites are all located within the City limits, principally on infill sites where sewer lines are available at <br />the curb. No impact would occur as a result of Housing Element adoption. <br />f) Adoption of the Housing Element would not cause an impact in water or wind erosion. Erosion impacts are addressed by the <br />General Plan and its associated EIR. <br />g) One of the Housing Element sites is located on San Francisco Bay and five of the sites abut San Leandro Creek. Two of <br />these five sites are located within the TOD Strategy area and have the potential for high density development. The General <br />Plan EIR and the TOD Strategy and its associated EIR include provisions to avoid erosion of the Bay and creek banks. <br />General Plan policies address required creek setbacks and measures to preserve riparian areas and prevent streambank <br />erosion. No new or increased impact will result above what is already anticipated as a result of adopting the Housing <br />Element. <br /> POTENTL4LLP <br /> POTENTIALLY SIGNIFICANT LESS THAN <br />O <br />ISSUES SIGNIFICANT UNLESS SIGNIFICANT IMP <br />CT SOURCES <br /> ISSUES MITIGATION IMPACT <br /> INCORPORATED <br />4. HYDROLOGY AND WATER QUALITY. Would the project: <br />a. Violate any water quality standards or waste X 1, 2 <br />dischar ere uirements? <br />b. Substantially deplete groundwater supplies or X 1, 2 <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, for example, the production rate ofpre-existing <br />nearby wells would drop to a level which would not <br />support existing land uses or planned uses for which <br />ermits have been anted? <br />c. Substantially alter the existing drainage pattern of the X 1,2 <br />site or area, including alteration of the course of a <br />stream or river, in a manner which would result in <br />substantial erosion or siltation on- or off-site? <br />d. Substantially alter the existing drainage pattern of the X 1, 2 <br />site or area, including alteration of the course of a <br />stream or river, or substantially increase the rate or <br />amount of surface runoff in a manner which would <br />result in floodin on- or off-site? <br />e. Create or contribute runoff water which would exceed X 1, 2 <br />the capacity of existing or planned storm water <br />drainage systems or provide substantial additional <br />sources of olluted runoff? <br />f. Otherwise substantiall de rade water uali ? X 1, 2, 3 <br />g. Place housing within a 100-year flood hazard area as X 1, 2, 8 <br />mapped on a federal Flood Hazard Boundary or <br />Flood Insurance Rate Map (FIRM) or other flood <br />hazard delineation ma ? <br />h. Place within a 100-year flood hazard area structures X 1, 2 <br />which would im ede or redirect flood flows? <br />i. Expose people or structures to a significant risk of 1, 3 <br />loss, injury or death involving flooding, including <br />floodin as a result of the failure of a levee or dam? <br />Inundation b seiche, tsunami, or mudflow? X 1, 3 <br />k. Exposure of people property to water related hazards X 1 <br />such as tidal waves? <br />Housing Element Initial Study and Negative Declaration 11 February 2010 <br />