AgdaPkt 2013-09-09 - Laserfiche WebLink

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7.A. - Page 30 ATfACHMENT 1 foundations, surface improvements, and utility connections shall be designed to structurally withstand the associated movement, without disrupting either pedestrian or vehicular connections to the building. The requirement described in Mitigation 15-1 for peer review of the recommended design-level geotechnical investigations, as well as for certification by the project civil engineer that all provisions of the investigation have been incorporated into the project's design and construction, would also apply to this mitigation and to all subsequent geotechnical and soils mitigation measures set forth in Draft EIR chapter 15 (Geology and Soils). Finding: Implementation of Mitigation 15-4 would reduce the potential compressible soil and settlement impacts to a less-than-significant level. Facts in Support of Finding: Implementation of Mitigation 15-4 would reduce potential compressible soil and settlement impacts to a less-than-significant level by requiring detailed, site-specific geotechnical investigations and solutions prepared by a registered engineering geologist or geotechnical engineer, with review and approval authority by the City Engineer. These facts are described in Draft EIR chapter 15 (Geology and Soils) on pages 15-1 through 15-15, which is hereby incorporated by reference. Impact: Impact 15-5: Expansive Soils. Near-surface clay soils subjected to seasonal cycles of wetting and drying can undergo significant volume changes, expanding when wet and shrinking when dry. Structures based in these materials would be subjected to significant stresses that could destabilize foundations and cause cracking or heaving of floor slabs and exterior pavements. Mitigation: Mitigation 15-5. The detailed, design-level geotechnical investigations required for each project construction phase under Mitigation 15-1 shall include an evaluation of the likely effects of building on expansive soils and shall recommend specific measures designed to minimize soil movement and/or counter its potentially destructive effects. Finding: Implementation of Mitigation 15-5 would reduce the potential expansive soil impacts to a less-than-significant level. Facts in Support of Finding: Implementation of Mitigation 15-5 would reduce potential expansive soils impacts to a less-than-significant level by requiring detailed, site- specific geotechnical investigations and solutions prepared by a registered engineering geologist or geotechnical engineer, with review and approval authority by the City Engineer. These facts are described in Draft EIR chapter 15 (Geology and Soils) on pages 15-1 through 15-15, which is hereby incorporated by reference. Impact: Impact 15-6: Seismically Induced Settlement. Development of the proposed project would place new commercial buildings in an area that could experience rapid, excessive settlement in response to earthquake-induced ground shaking during the useful life of the project improvements. ATTY/RES0.2901/STANFORD EIR CERTIFICATION REV:08-29-13 VR Page 20 of 56