Reso PC17-07 0032 PC Reso Approving CEQA - 860 Charter St

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LSA ASSOCIATES, INC. SEPTEMBER 2016 ROCKETSHIP REDWOOD CITY ELEMENTARY SCHOOL PROJECT INITIAL STUDY/ MITIGATED NEGATIVE DECLARATION P:\RWC1401B Rocketship School\PRODUCTS\IS-MND\Public\Rocketship Public Review 09-29-16.docx (09/29/16) PUBLIC REVIEW DRAFT 61 Potentially Significant Impact Potentially Significant Unless Mitigation Incorporated Less Than Significant Impact No Impact IX. HYDROLOGY AND WATER QUALITY. Would the project: i) Expose people or structures to a significant risk of loss, injury or death involving flooding, including flooding of as a result of the failure of a levee or dam? j) Inundation by seiche, tsunami, or mudflow? This analysis considers potential environmental impacts that could result from implementation of the proposed project, including impacts related to construction and operation of a sub-slab depressurization system (SSDS) designed to address the potential presence of VOCs inside the project site structure; no hydrology and water quality impacts related to construction or operation of the SDSS were identified. a) Violate any water quality standards or waste discharge requirements? (Less-Than-Significant Impact) The State Water Resources Control Board and nine Regional Water Quality Control Boards regulate the water quality of surface water and groundwater bodies throughout California. Runoff water quality is regulated through the National Pollutant Discharge Elimination System (NPDES) Program (established through the federal Clean Water Act). The NPDES Program objective is to control and reduce pollutant discharges to surface water bodies. Compliance with NPDES permits is mandated by State and federal statutes and regulations. Locally, the NPDES Program is overseen by the San Francisco Bay Regional Water Quality Control Board (Water Board). The San Mateo Countywide Water Pollution Prevention Program (SMCWPPP) assists cities, towns, and unincorporated areas with coordination and consistency of approaches across the County in implementing the Water Board requirements. The project site and surrounding areas are flat or gently sloped. The elevation of the project site ranges from approximately 8.1 feet above the National Geodetic Vertical Datum of 1929 (NGVD 29) in the northern corner to approximately 11.2 feet NGVD 29 in the southern corner.77 Runoff from the project site is conveyed to the City of Redwood City’s Douglas Avenue Pump Station. The pump station conveys flow to the Bayfront Canal, which ultimately drains to the Bay. The project site has an area of approximately 48,800 square feet (1.12 acres), and is currently developed with an approximately 23,200-square-foot (0.53 acres) warehouse and an associated parking lot and storage shed that make up the remainder of the project site (approximately 25,600 square feet, 0.59 acres). The proposed project would convert the interior of the existing building on 77 K2A Architecture + Interiors, 2014, op. cit. ATTY/RESO.0032/PC RESO APPROVING CEQA - 860 CHARTER ST. EXHIBIT A REV: 06-15-17 PR Page 69 of 124