Reso 2011-192 - Laserfiche WebLink

Home

2450 Washington Avenue Apartments 14 October 2011 POTENTIALLY POTENTIALLY SIGNIFICANT LESS THAN NO ISSUES SIGNIFICANT UNLESS SIGNIFICANT IMPACT SOURCES ISSUES MITIGATION IMPACT INCORPORATED h. Place within a 100 -year flood hazard area structures X 4, 5, 8 which would impede or redirect flood flows? i. Expose people or structures to a significant risk of loss, X 4, 5, 8 injury or death involving flooding, including flooding as a result of the failure of a levee or dam? j. Inundation by seiche, tsunami, or mudflow? X 1 4, 5, 8 EXPLANATION: a) The site is currently developed with a two -story commercial office building and associated asphalt parking lot. Currently, site runoff releases into an -site catch basins and then into storm drains ultimately discharging into the San Leandro Watershed and the San Pablo Bay subbasin. The City of San Leandro Municipal Code regulates the discharge of storm water and the potential for pollutant transport to water resources through Title 3: Health and Safety, Chapter 3 -15 Storm Water Management and Discharge Control. Chapter 3 -15 requires the best management practices (BMPs) for new development and redevelopment and compliance with BMPs where BMP guidelines or requirements have been adopted by any federal, state, regional and /or City agency (Section 3 -15 -215 — Reduction of Pollutants in Storm Water). Additionally, storm water dischargers are regulated through Title 7: Maps, Buildings, and Subdivisions, Chapter 1 -12 Grading, Excavations and Fills. Mitigation Measure #18: Prior to issuance of a grading permit, the project applicant must prepare and implement an erosion and sediment control plan (ESCP) including interim and permanent erosion and sediment control measures and a pollutant control plan (PCP). Mitigation Measure #19: Prior to issuance of a grading permit, the project applicant shall file the required documentation to the State Water Resources Quality Board and prepare a Storm Water Pollutant Prevention Plan (SWPPP) which will be reviewed and approved by the City Engineer. The City Engineer must conduct inspections prior to issuing a certificate of occupancy, to ensure that requirements are complied with. Mitigation Measure #20: The applicant will comply with applicable waste discharge requirements and municipal code requirements including preparation of a SWPPP for construction activities and compliance with the Alameda Countywide Clean Water Program (ACCWP). These permit programs are designed to prevent violation of water quality standards through mitigation and control of pollutant transport in storm water runoff and infiltrating waters. The City of San Leandro Municipal Code ensures that permit conditions are met. The applicable water quality objectives and standards for the San Pablo Bay sub -basin is listed in the San Francisco Bay Basin Water Quality Control Plan Basin (Basin Plan) prepared by the Regional Water Quality Control Board (RWQCB) in compliance with the federal Clean Water Act (CWA) and the State Porter - Cologne Water Quality Control Act. Section 303(d) of the CWA requires that the states make a list of waters that are not attaining standards after the technology -based limits are put into place. For waters on this list, the states are to develop total maximum daily loads or TMDLs. TMDLs are established at the level necessary to implement the applicable water quality standards. The proposed project would be subject to existing TMDLs that are considered protective of water quality. Consequently, the proposed project would not violate water quality standards or waste discharge requirements and the impacts would be less than significant. b) Regional groundwater in the San Leandro area generally follows topography, moving from areas of higher elevation in the east towards lower elevations in the southwest. Groundwater is expected to be encountered at a depth ranging from 20 to 30 feet below ground surface (bgs). Groundwater is expected to flow in a direction consistent with local topography, to the southwest, towards San Francisco Bay. The project site is now graded and disturbed and developed with a commercial office building. The proposed project would replace a commercial land use with a 66 -unit multi - family residential development. Consequently, the proposed project would not result in a significant increase in impervious surfaces, since the site was previously graded and developed. Therefore, impacts to groundwater recharge will not be significant. 2450 Washington Avenue Apartments 14 October 2011