AgdaPkt 2014-10-06 Closed and Joint with SA

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7.3.B. - Page 70 project applicant are subject to review and approval by the City. The project would be subject to these requirements as conditions of project approval. The project is expected to qualms for a 100 percent exemption under Special Project Category "C" (Transit- Oriented Development [TOD] Project) of the San Mateo County Water Pollution Prevention Program, which means that the project would be 100 percent exempt (in storm drainage volume) from County low impact development (LID) requirements because the project: (1) is within '/ -mile of a transit hub; (:) has a minimum density of 100 dwelling units per acre (project density would be about 154 units per acre); and (3) would contain no surface parking The result would be that up to 100 percent of the project site's impervious surface runoff could be treated with media filter devices approved by the Bay Area Stormwater Management Agencies Association (BASMAA) (see Plan Sheet TM -6 for locations and sizing of proposed media filters). This proposed exemption is subject to City review and approval. b. The City of Redwood City does not rely on groundwater as a water supply source. Implementation of the proposed project would not require substantial amounts of water such that it would result in a substantially depleted groundwater supplies (the applicant has prepared a City Attachment Q, which estimates project water demand). Therefore, the proposed project would 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 program EIR (p. 10 -25) concluded that DTPP-facilitated development would not result in any 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 project would neither change the amount of surface water nor change the currents, course, or direction of water movements in any surface water. As a result, project implementation would 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 would occur with respect to substantial erosion or siltation on- or off site. Moreover, the proposed project would 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 program EIR (pp. 10 -23 and 10 -24) concluded that DTPP-facilitated development would not result in any significant storm drainage impacts. The proposed project is in compliance with all applicable DTPP regulations. Also, the City's Drainage Guidelines for Commercial Development require post- development storm water discharge to be equal to or less than pre- development discharge; the project would be subject to this requirement as a condition of project approval. As a result of DTPP regulations and standard City requirements, no potentially significant storm drainage impacts are anticipated with implementation of the project. Also see item (a) above. f With implementation of the San Mateo Countywide Stormwater Pollution Prevention Plan (SWPPP) as part of both the NPDES permit program and DTPP program EIR Mitigation 16 -3, project construction would result in a less - than- significant degradation of existing water quality. Furthermore, operation of the proposed project would not generate any 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., & i. 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. The entire project site is located in Zone X (Other Flood Areas) on its FEMA Flood Insurance Rate Map (FIRM), which includes "areas of 0.2% annual chance [500 - year] flood; areas of 1% annual chance flood with average depths of less than 1 foot or with drainage areas less than 1 square mile; and areas protected by levees from I% annual chance flood" (FEMA FIRM Map Number 06081 CO301E, .Panel 301 of 510, Effective Date October 16, 2012). As a result, no significant flooding impacts are anticipated, and no FEMA requirements are necessary. The project site is not subject to flooding from levee or dam failure (DTPP EIR p. 10 -26); therefore, potential flooding as a result of failure is considered minimal. Project implementation is not anticipated to expose people or property to significant risk from levee or dam failure. j. The project site is not subject to inundation by seiche, tsunami, or mudflow (DTPP EIR pp. 10 -26 and 10 -27). Summaiv of Impacts Potentially Less than Significant Less than Significant With Mitigation Significant No Impact Incorporated Impact Impact X. LAND USE AND PLANNING -- yG ould the prolee 21