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4. Environmental Analysis Depending on the nature of contamination,the lead agency responsible for the regulation of hazardous materials at the site can be the DTSC, RWQCB, or both. DTSC evaluates contaminated sites to ascertain risks to human health and the environment. Sites can be ranked by DTSC or referred for evaluation by the RWQCB. The RWQCB,Central Valley Region, is — responsible for overseeing the discharge of water(from dewatering during construction activities) to surface waters as it applies to the proposed project. The DTSC and Cal/OSHA are the agencies that are responsible for overseeing that appropriate measures are taken to protect workers from — exposure to potential groundwater contaminants. Local The Unified Hazardous Waste and Hazardous Management Regulatory Program(SB 1082, 1993) is a state and local effort to consolidate, coordinate,and make consistent existing programs — regulating hazardous waste and hazardous materials management. Cal/EPA adopted implementing regulations for the Unified Program(CCR,Title 27, Division 1, Subdivision 4, Chapter 1) in January 1996. The Unified Program is implemented at the local level by Certified — Unified Program Agencies (CUPAs). The San Joaquin County Environmental Health Department is the CUPA for cities and unincorporated areas within San Joaquin County. The Stanislaus County Environmental Health Department is the CUPA for cities and unincorporated areas within Stanislaus County. These agencies regulate the use, storage and disposal of hazardous materials by issuing permits, inspecting facilities, and investigating complaints. They issues permits for installation and removal of underground storage tanks. They inspect businesses for compliance with the Hazardous Waste Control Act. Hazardous waste is subject to storage time limits, disposal requirements and labeling requirements on containers. Under a contract with the SWRCB,these agencies conduct the Local Oversight Program to oversee the abatement and cleanup of releases of hazardous substances from underground storage tanks in the counties that do not involve chemical releases to water. The RWQCB is the lead — agency for chemical releases to water throughout the Counties. Emergency Response to Hazardous Materials Incidents California has developed an Emergency Response Plan to coordinate emergency services provided by federal, state, and local government and private agencies. Response to significant — hazardous materials incidents is one part of this plan. The plan is administered by the state OES, which coordinates the responses of other agencies including the Cal/EPA, the California Highway Patrol,CDFG,the RWQCB, local environmental health departments, and local fire departments. — San Joaquin County Plans and Policies Assembly Bill 2948 (Tanner, 1986)established procedures for the preparation of a County Hazardous Waste Management Plan (HWMP). The HWMP principally governs the coordination and planning of hazardous waste disposal capacity between the County and state. v RMC Pacific Vernalis Quarry Mining and Reclamation Project .11-1 ESA/203015 Y Draft Environmental Impact Report May 2006