2024-053 - Final Supplemental for The Related Bristol Specific Plan Project

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by a certified hazardous waste hauler to a landfill permitted by the state to accept hazardous materials and disposed of per California Hazardous Waste Regulations. • A Health and Safety Plan (HASP) shall be prepared for each contractor that addresses potential safety and health hazards and includes the requirements and procedures for employee protection. The HASP shall also outline proper soil handling procedures and health and safety requirements to minimize worker and public exposure to hazardous materials during construction. • All SMP measures shall be printed on the construction documents, contracts, and project plans prior to issuance of grading permits. Impact Finding: The Project would not create a significant hazard to the public or the environment through reasonably foreseeable upset or accident conditions involving the release of hazardous materials into the environment (Draft Supplemental EIR at p. 5.6-23). Changes or alterations have been required in, or incorporated into, the Project that avoid or substantially lessen the significant environmental effect identified in the Draft Supplemental EIR. Facts in Support of Findings: Construction Accidental Release. While the routine use, storage, transport, and disposal of hazardous materials in accordance with applicable regulations during demolition, excavation, grading, and construction activities would not pose health risks or result in significant impacts; improper use, storage, transportation and disposal of hazardous materials and wastes could result in accidental spills or releases, posing health risks to workers, the public, and the environment. Thus, implementation of the proposed Project could potentially result in the accidental release of hazardous materials. The use of best management practices (BMPs) during construction implemented as part of a Stormwater Pollution Prevention Plan (SWPPP) as required by the National Pollution Discharge Elimination System General Construction Permit (and included as PPP WQ-1) would minimize potential adverse effects to workers, the public, and the environment (Draft Supplemental EIR at p. 5.6-23). Contaminated Soils. As described previously, portions of the site contain soil that could be reused onsite as backfill material for non-residential and non -sensitive use areas. Soils that exceed applicable USEPA and/or DTSC Screening levels would require excavation and disposal pursuant to the requirements of the DTSC, California Integrated Waste Management Board, RWQCB, OCFA, and the OCHCA. As a result, Mitigation Measure HAZ-1 is included to require a Soil Management Plan (SMP) be implemented during earthwork and grading to remove and dispose of impacted soils. Mitigation Measure HAZ-1 requires handling of contaminated soils be completed pursuant to existing DTSC and RWQCB standards, soils sampling to ensure contaminated soils are removed, and that a certified hazardous waste hauler remove and transport hazardous materials per California Hazardous Waste Regulations to a Landfill permitted by the state to accept hazardous materials. With implementation of Mitigation Measure HAZ-1 impacts related to hazards from contaminated soils would be less than significant (Draft Supplemental EIR at pp. 5.6-23 through 5.6-24).