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7.A. - Page 30 flows contain urban runoff with contaminants such as oil, grease, particulates, metals, and solvents. Because the proposed project is subject to the requirements of an NPDES permit for municipal storm water runoff and other requirements of the City, County, and Regional Water Quality Control Board, the conditions of which limit the volume of contaminants allowed to enter the storm drain system, the proposed project will not violate arry water quality standards or waste discharge requirements. Furthermore, the DTPP EIR (pp. 10-23 through 10-25) concluded that DTPP facilitated development would not result in arry significant water quality or storm water drainage impacts. The proposed project is in compliance with all applicable DTPP regulations, and as a result, no potentially significant impacts on water quality or storm water infrastructure are anticipated with implementation of this project. The project applicant has prepared a Preliminary Stormwater Control Plan with notes and details (Plan Sheets C5.0 and C5.1, 4/26/13), which identify (1) on-site storm water treatment areas, including a bio-retention area on the site's south edge; (2) a bio-retention maintenance schedule and source control measures; and (3) media filtration specifics. The Plan also includes calculations of existing and planned pervious and impervious surfaces, with associated flow rates. All of the above project storm water components are subject to review and approval by the City. The proposed amendments will not introduce arry new land use or substantially alter the development pattern of anticipated with the DTPP. Removal of the Depot Circle and Theatre Way extension concepts will serve to maintain the existing street grid and associated drainage pattern. The potential for exposed surface parking lots is subject to review and discretion of the City and thus would be required to comply with all NPDES permits for municipal storm water runoff and other requirements of the City, County, and Regional Water Quality Control Board. Furthermore, the temporary installation of exposed parking lots would be consistent with existing land uses within the Downtown; therefore, the proposed amendments will not result in the violation of arry water quality standards or waste discharge requirements. b. The City of Redwood City does not rely on groundwater as a water supply source. Implementation of the proposed amendments and project will not require substantial amounts of water such that it would result in a substantially depleted groundwater supplies. Therefore, the proposed project will not interfere substantially with groundwater recharge such that there would be a net deficit in aquifer volume or a lowering of the local groundwater table level. Furthermore, the DTPP EIR (p. 10-25) concluded that DTPP facilitated development would not result in arry significant groundwater impacts. The proposed project is in compliance with all applicable DTPP regulations, and as a result, no potentially significant groundwater impacts are anticipated with implementation of the project. c. & d. The proposed amendments ancl/or the project will neither change the amount of surface water nor change the currents, course, or direction of water movements in arry surface water. As a result, project implementation will not substantially alter the existing drainage pattern of the site or DTPP area. Furthermore, the proposed site does not contain a stream or river; therefore, no associated impacts will occur with respect to substantial erosion or siltation on- or off-site. Moreover, the proposed project will not substantially alter the existing drainage pattern of the site so as to substantially increase the rate or amount of surface runoff in a manner which would result in flooding on- or off-site. The DTPP EIR (pp. 10-23 and 10-24) concluded that DTPP facilitated development would not result in arry significant storm drainage impacts. The proposed project is in compliance with all applicable DTPP regulations, and as a result, no potentially significant storm drainage impacts are anticipated with implementation of this project. f. With implementation of the San Mateo Countywide Stormwater Pollution Prevention Plan (SWPPP) as part of both the NPDES permit program and DTPP EIR Mitigation 16-3; project construction will result in a less-than- significant degradation of existing water quality. Furthermore, the proposed amendments and operation of the proposed project will not generate arry foreseen uses that would substantially degrade water quality. The proposed project is in compliance with all applicable DTPP regulations, and as a result, no additional water quality impacts are anticipated with implementation of this project. g. & h. The project site is not located in a Special Flood Hazard Area as defined by the Federal Emergency Management Agency (FEMA) National Flood Insurance Program (NFIP), which means that the site is not subject to extensive damage from a one percent chance (100 year) flood. However, the entire project site is located in Zone X(Other Flood Areas) on its FEMA Flood Insurance Rate Map (FIRM), which means the site: (1) is subject to a 500 year flood or a flood that has a 0.2 percent chance of occurring in arry one year, or (2) is subject to a 100 year flood with average depths of less than one foot or with drainage areas less than one square mile, or (3) is protected by levees from the 100 yearflood. (FEMA FIRMMap Number 06081CO301E, Effective Date October 16, 2012) According to the DTPP EIR (p. 10-25), as part of the City's involvement in the NFIP, all new developments within the 500 year flood zone are required to meet specific flood damage avoidance requirements, for example, raising 21