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Hydrology/Water Quality (Continued)
<br />For waters on this list, the states are to develop total maximum daily loads or TMDLs.. TMDLs are established at the level
<br />necessary to implement the applicable water quality standards. The proposed project would be subject to existing TMDLs
<br />that are considered protective of water quality. The proposed project would not violate water quality standards with
<br />compliance to applicable regulations and waste discharge requirements, therefore impacts would be less than significant.
<br />The City of San Leandro Municipal Code regulates the discharge of stormwater and the potential for pollutant transport to
<br />water resources through Title 3: Health and Safety, Chapter 3-15 Storm Water Management and Discharge Control.
<br />Chapter 3-15 requires the best management practices (BMPs) for new development and redevelopment and compliance
<br />with BMPs where BMP guidelines or requirements have been adopted by any federal, state, regional and/or City agency
<br />(Section 3-15-Buildingsand Subdivisions, Chapter 1-12 Grading, Excavations and Fills. If a grading permitis required,
<br />project applicants must prepare and implement.an erosion and sediment control plan (ESCP) including interim and
<br />permanent erosion and sediment control measures, and a pollutant control plan (PCP). A grading permit cannot be issued
<br />until the project applicant has filed the required documentation with the State Water Resources Quality Board and has
<br />prepared a Storm Water Pollutant Prevention Plan (SWPPP) which has been reviewed and approved by the City Engineer.
<br />The City Engineer or their representative must conduct inspections prior to issuing a certificate of occupancy to ensure
<br />that requirements are complied with.
<br />A Stormwater Control Plan was prepared for the proposed project by Lea & Braze Engineering (September, 2008) that
<br />identified opportunities and constraints for stormwater control. To reduce imperviousness, a number of recommendations
<br />are included to promote ground water recharge. The majority of water supplies serving the City of San Leandro are
<br />obtained from the East Bay Municipal Utilities District (EBMUD). The proposed project would not include development
<br />of any groundwater supply wells and would rely on EBMUD water supplies. About 90 percent of EBMUD water supplies
<br />are surface water resources from the Mokelumne River system with the rest from runoff from local watersheds to terminal
<br />reservoirs, such as Lake Chabot (EBMUD 2005).
<br />Mitigation Measure #5: Prior to issuance of a grading permit, the project applicant must prepare and implement
<br />an erosion and sediment control plan (ESCP) including interim and permanent erosion and sediment control
<br />measures, as well as a pollutant control plan (PCP).
<br />Mitigation Measure #6: Prior to issuance of a grading permit, the project applicant shall file the required
<br />documentation with the State Water Resources Quality Board and prepare a Storm Water Pollutant Prevention
<br />Plan (SWPPP) which will be reviewed and approved by the City Engineer. The City Engineer must conduct
<br />inspections prior to issuing a certificate of occupancy, to ensure that requirements are complied with.
<br />The project site is currently underutilized (Site 1) and has historically been covered by impervious surfaces, including an
<br />at -grade, asphalt parking lot. Site 2 is currently vacant and undeveloped, but is the former site of the Del Monte
<br />Processing Plant. The proposed project would replace a previously graded and paved site with a 200 -unit multi -family
<br />residential development. It would also intensify development by replacing a vacant lot with a 329 to 345 -space BART
<br />parking garage. Consequently, development of the proposed project will result in a net increase in impervious surfaces
<br />and, therefore, a potentially significant impact on groundwater recharge. With implementation of the proposed project, the
<br />intensity of development would be increased relative to existing conditions, resulting in a potential reduction in
<br />groundwater recharge potential.
<br />The majority of water supplies serving the City of San Leandro are obtained from the East Bay Municipal Utilities District
<br />(EBMUD). The TOD Strategy Area drains to the San Pablo Bay subbasin and the San Leandro watershed. Water
<br />features in San Leandro include creeks, flood control channels, and portions of the San Francisco Bay. EBMUD
<br />collaborates with the Alameda County Flood Control and Water Conservation District (ACFCWCD), Alameda County
<br />Water District (ACWD), the City of Hayward and the California Department of Water Resources (DWR) to coordinate
<br />initial regional groundwater management activities, such as sharing monitoring data from each basin and monitoring
<br />performance of projects.
<br />Cornerstone at San Leandro Crossings Initial Study 8 March 2009
<br />POTENTIALLY
<br />ISSUES
<br />POTENTIALLY
<br />SIGNIFICANT
<br />LESS THAN
<br />NO
<br />SIGNIFICANT
<br />UNLESS
<br />SIGNIFICANT
<br />IMPACT
<br />SOURCES
<br />ISSUES
<br />MITIGATION
<br />IMPACT
<br />INCORPORATED
<br />Hydrology/Water Quality (Continued)
<br />For waters on this list, the states are to develop total maximum daily loads or TMDLs.. TMDLs are established at the level
<br />necessary to implement the applicable water quality standards. The proposed project would be subject to existing TMDLs
<br />that are considered protective of water quality. The proposed project would not violate water quality standards with
<br />compliance to applicable regulations and waste discharge requirements, therefore impacts would be less than significant.
<br />The City of San Leandro Municipal Code regulates the discharge of stormwater and the potential for pollutant transport to
<br />water resources through Title 3: Health and Safety, Chapter 3-15 Storm Water Management and Discharge Control.
<br />Chapter 3-15 requires the best management practices (BMPs) for new development and redevelopment and compliance
<br />with BMPs where BMP guidelines or requirements have been adopted by any federal, state, regional and/or City agency
<br />(Section 3-15-Buildingsand Subdivisions, Chapter 1-12 Grading, Excavations and Fills. If a grading permitis required,
<br />project applicants must prepare and implement.an erosion and sediment control plan (ESCP) including interim and
<br />permanent erosion and sediment control measures, and a pollutant control plan (PCP). A grading permit cannot be issued
<br />until the project applicant has filed the required documentation with the State Water Resources Quality Board and has
<br />prepared a Storm Water Pollutant Prevention Plan (SWPPP) which has been reviewed and approved by the City Engineer.
<br />The City Engineer or their representative must conduct inspections prior to issuing a certificate of occupancy to ensure
<br />that requirements are complied with.
<br />A Stormwater Control Plan was prepared for the proposed project by Lea & Braze Engineering (September, 2008) that
<br />identified opportunities and constraints for stormwater control. To reduce imperviousness, a number of recommendations
<br />are included to promote ground water recharge. The majority of water supplies serving the City of San Leandro are
<br />obtained from the East Bay Municipal Utilities District (EBMUD). The proposed project would not include development
<br />of any groundwater supply wells and would rely on EBMUD water supplies. About 90 percent of EBMUD water supplies
<br />are surface water resources from the Mokelumne River system with the rest from runoff from local watersheds to terminal
<br />reservoirs, such as Lake Chabot (EBMUD 2005).
<br />Mitigation Measure #5: Prior to issuance of a grading permit, the project applicant must prepare and implement
<br />an erosion and sediment control plan (ESCP) including interim and permanent erosion and sediment control
<br />measures, as well as a pollutant control plan (PCP).
<br />Mitigation Measure #6: Prior to issuance of a grading permit, the project applicant shall file the required
<br />documentation with the State Water Resources Quality Board and prepare a Storm Water Pollutant Prevention
<br />Plan (SWPPP) which will be reviewed and approved by the City Engineer. The City Engineer must conduct
<br />inspections prior to issuing a certificate of occupancy, to ensure that requirements are complied with.
<br />The project site is currently underutilized (Site 1) and has historically been covered by impervious surfaces, including an
<br />at -grade, asphalt parking lot. Site 2 is currently vacant and undeveloped, but is the former site of the Del Monte
<br />Processing Plant. The proposed project would replace a previously graded and paved site with a 200 -unit multi -family
<br />residential development. It would also intensify development by replacing a vacant lot with a 329 to 345 -space BART
<br />parking garage. Consequently, development of the proposed project will result in a net increase in impervious surfaces
<br />and, therefore, a potentially significant impact on groundwater recharge. With implementation of the proposed project, the
<br />intensity of development would be increased relative to existing conditions, resulting in a potential reduction in
<br />groundwater recharge potential.
<br />The majority of water supplies serving the City of San Leandro are obtained from the East Bay Municipal Utilities District
<br />(EBMUD). The TOD Strategy Area drains to the San Pablo Bay subbasin and the San Leandro watershed. Water
<br />features in San Leandro include creeks, flood control channels, and portions of the San Francisco Bay. EBMUD
<br />collaborates with the Alameda County Flood Control and Water Conservation District (ACFCWCD), Alameda County
<br />Water District (ACWD), the City of Hayward and the California Department of Water Resources (DWR) to coordinate
<br />initial regional groundwater management activities, such as sharing monitoring data from each basin and monitoring
<br />performance of projects.
<br />Cornerstone at San Leandro Crossings Initial Study 8 March 2009
<br />
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