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ATTY/RESO.0035/CC RESO CERTIFYING FINAL EIR – 1548 MAPLE REV: 04-30-18 PR Page 17 of 49 Finding: Implementation of Mitigation Measure HAZ-1 would reduce the project- related impact to accidental release of hazardous materials and/or the disturbance and reuse of soil potentially impacted with hazardous materials to a less-than-significant level. Facts in Support of Finding: This mitigation measure appropriately identifies the process for preparation of a Response Plan, the requirements for the activities that shall be included, and the requirement that the Response Plan be reviewed and approved by the Regional Water Board. Impact HAZ -2: Construction of the proposed project and the project variant could result in accidental releases of hazardous building materials that could result in impacts to construction workers, the public, and/or the environment. Mitigation HAZ-2: Prior to demolition activities, a Hazardous Building Materials Survey (HBMS) shall be performed by an appropriately certified environmental professional which shall identify whether ACMs, PCBs, LBP, or other hazardous materials are present in the existing structures on the project site. Specification for the abatement and disposal of identified hazardous materials in accordance with applicable regulations shall be prepared by an appropriately certified environmental professional. The HBMS and abatement specifications shall be submitted to and approved by the City prior to the start of abatement activities. Abatement activities shall be performed by appropriately certified personnel in accordance with all applicable laws and regulations and documented in a Closeout Report prepared by an environmental professional who shall oversee the abatement activities. The Closeout Report shall be submitted to the City for review and approval prior to the issuance of a demolition permit. Finding: Implementation of Mitigation Measure HAZ-2 would reduce the project- related impact related to the accidental release of hazardous building materials to a less-than- significant level. Facts in Support of Finding: This mitigation measure appropriately identifies the requirement of a HBMS, which would include measures for the abatement and disposal of identified hazardous materials and would be required to be reviewed and approved by the City. Impact HAZ-3: Construction of the proposed project and the project variant could result in potential health risks associated with exposure to VOCs. Mitigation HAZ-3: The project applicant shall include the following in the Regional Water Board approved Response Plan to ensure that potential health risks associated with exposure to VOCs are below established thresholds: Following excavation of impacted soil and backfilling of excavations, soil gas confirmation samples will be collected from: 1) previous sample locations with VOC concentrations greater than appropriate risk thresholds; and 2) the former engine repair facility. An appropriate amount of time (to be indicated in the Response Plan) shall be allowed for soil gas conditions to equilibrate in newly placed fill material prior to the collection of soil gas confirmation samples in areas where fill has been placed. Following excavation and soil vapor confirmation sampling, the potential health risks associated with vapor intrusion shall be recalculated using previous and confirmation soil gas sample results to determine if and where vapor mitigation systems (VMS) would be required per the Response Plan. 7.A. - Page 54