Reso PC16-23 PC 0116 Reso CEQA - Sandpiper

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Section 4.0—Environmental Setting and Discussion of Impacts accordance with the 2013 California Building Code (CBC), which contains the regulations that govern the construction of structures in California. Adherence to the 2013 CBC would increase the likelihood of the project to resist minor earthquakes without damage and major earthquakes without collapse. In addition, the design -level drawings and all accompanying documentation, including all structural elements of the proposed classroom building would be subject to the City and the Department of the State Architect (DSA) review and approval process. The primary role of the DSA is to ensure that California's K-12 schools and cominunity colleges are seismically safe and accessible to all. DSA fulfills this role by reviewing construction plans for structural safety, fire and life safety, and ADA compliance. In this role, DSA works closely with school districts and designers. The proposed project would not exacerbate existing seismicity and seismic hazards on the project site and, therefore, would not result in an impact under CEQA. (No Impact) 4.6.3.2 Soils Impacts (Checklist Question 4) The project site is land reclaimed from the San Francisco Bay. The site consists of five to eight feet of engineered fill soils placed on the native bay mud materials. The fill soils that blanket the site have a relatively low expansion potential. As discussed in the Geotechnical Engineering Investigation and Geologic and Seismic Hazards Assessment, the fill on the project site is underlain by approximately 40 feet of saturated and soft bay mud sediments that continue to settle under the weight of the existing fill and structures on the site. The weight from the placement of additional fill and/or structures on the project site would result in increased settlement. If fill and/or structures are not sufficiently distributed across the site, differential settlement could occur at the site. Impact GEO-1: Development of the proposed project could result in increased differential settlement on the project site. Mititsation Measure: The following mitigation measure would be implemented to reduce the potential for increased differential settlement to occur on the project site to a less than significant level. MM GEO-1: The proposed project would be designed and constructed using standard engineering safety techniques and would implement all the recommendations identified in the design -specific geotechnical report prepared for the project in accordance with the 2013 CBC and other state regulations. The design - specific geotechnical report, along with the design -level drawings, would be subject to the City and the DSA review and approval process. With implementation of the mitigation measure identified above, the proposed project would not result in a significant differential settlement impact. (Less Than Significant Impact with Mitigation Incorporated) City of Redwood City 43 Initial Study/Mitigated Negative Declaration Sandpiper Elementary School Facilities Expansion November 2016