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Environmental Checklist <br />Hydrology and Water Quality <br />Environmental Consistency Checklist Pursuant to CEQA Guidelines Section 15183 71 <br />Policy EH-4.11: Green Infrastructure <br />Consistent with the Municipal Regional Stormwater Permit for the San Francisco Bay Area, <br />promote the increased use of green infrastructure as a means of improving stormwater quality. <br />This shall include the incorporation of low impact development (LID) drainage design in public <br />and private streets, parking lots, roofs, and other facilities. This also includes the use of best <br />management practices to reduce impervious surfaces, including strategies using vegetation, <br />soils, and natural processes to manage water and create a healthier urban environment. <br />Policy OSC-7.2: Water Conservation <br />Promote the efficient use of existing water supplies through a variety of water conservation <br />measures, including the use of recycled water for landscaping. <br />Policy OSC-7.3: Drought-Tolerant Landscaping <br />Encourage the use of native vegetation and Bay-friendly landscaping and enforce the State <br />Department of Water Resources Model Water Efficient Landscape Ordinance (WELO). <br />Policy OSC-7.4: Development Standards <br />Maintain local planning and building standards that require the efficient use of water through <br />such measures as low-flow plumbing fixtures and water-saving appliances. Require water <br />conservation measures as a condition of approval for major developments. <br />San Leandro Municipal Code <br />SLMC Chapter 3.15 outlines the general provisions establishing stormwater management and <br />discharge control and best management practices to reduce pollutants in stormwater discharges via <br />best management practices (BMPs). <br />SLMC Section 7.12.230 details the measures that erosion control, sedimentation control, and <br />drainage plans must have to ensure that storm water from the project site meets the quality <br />standards dictated by the “Storm Water Management and Discharge Control Program Ordinance <br />No. 92-011,” “Association of Bay Area Governments (ABAG) Manual of Standards for Erosion and <br />Sediment Control Measures,” and the “Handbook for Erosion and Sediment Control.” <br />Project-Specific Impacts <br />Ruggeri-Jensen-Azar prepared a Hydrology and Hydraulic Calculations report for the project site in <br />accordance with current Alameda County Flood Control and Water Conservation District criteria as <br />described in the Alameda County Clean Water Program C.3 Stormwater Technical Guidance in April <br />2021 (included as Appendix HYDRO). <br />a.Would the project violate any water quality standards or waste discharge requirements or <br />otherwise substantially degrade surface or ground water quality? <br />Construction activities would have the potential to cause erosion from exposed soil, an accidental <br />release of hazardous materials such as vehicle fuels and lubricant, or temporary siltation from <br />stormwater runoff. Soil disturbance would occur during site preparation and grading of the site. The <br />General Plan EIR indicates that compliance with the requirements of the State Water Regional <br />Control Board’s Construction General Permit, SLMC Section 7.12.230 and SLMC Chapter 3.15 <br />focused on erosion control and sedimentation control plans and stormwater BMPs, and General <br />Plan Policy EH-4.1 and Action EH-4.1.B focused on continuing to implement water pollution control <br />measures would reduce construction-related water quality impacts to less than significant levels.