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4 Environmental Analysis 4.9 Hazards and Hazardous Materials identified must be no less than those set forth in the Institute of Electrical and Electronics Engineers Standards Association (IEEE) Standard 516-2003 (Guide for Maintenance Methods on Energized Power Lines) (IEEE 2003), which establishes minimum vegetation-to-conductor clearances to maintain electrical integrity of the electrical system. 4.9.2.2 State In January 1996, the California Environmental Protection Agency (Cal EPA) adopted regulations implementing a Unified Hazardous Waste and Hazardous Materials Management Regulatory Program (Unified Program, Health and Safety Code Section 25404 et seq.). The program has six elements: hazardous waste generators and hazardous waste onsite treatment; USTs; aboveground storage tanks (AST); hazardous materials release response plans and inventories; risk management and prevention programs; and Unified Fire Code hazardous materials management plans and inventories. The program is implemented at the local level. The Certified Unified Program Agency (CUPA) is the local agency responsible for the implementation of the Unified Program. In San Joaquin County, the San Joaquin County Environmental Health Department is the designated CUPA for all businesses (San Joaquin County 2022). In Alameda County, the Alameda County Department of Environmental Health is the designated CUPA (Alameda County 2023). Hazardous Materials Management The California Hazardous Materials Release Response Plans and Inventory Law (Business Plan Act, Health and Safety Code Section 25500 et seq.) requires any business that handles hazardous materials at or above specified thresholds to prepare a hazardous materials business plan (HMBP). The thresholds include any site that stores hazardous materials in excess of 55 gallons (liquids), 500 pounds (solids), or 200 cubic feet for a compressed gas. The HMBP much include the following: • Details, including floor plans, of the facility and business conducted at the site; • An inventory of hazardous materials that are handled or stored onsite; • An emergency response plan; and • A safety and emergency response training program for new employees with annual refresher courses. The primary purpose of the HMBP requirement is to provide basic information needed by first responders to prevent or mitigate damage to the public health and safety and to the environment from a release or threatened release of a hazardous material (Cal OES 2017). The HMBP requirement could apply, for example, to the handling of mineral oil, which is a highly refined hydrocarbon-based oil used as an insulation medium and coolant in transformers and other electrical equipment. Hazardous Waste Handling The DTSC regulates the generation, transportation, treatment, storage, and disposal of hazardous waste. State and federal laws require detailed planning to ensure that hazardous materials are properly handled, used, stored, and disposed of, and, in the event that such materials are accidentally released, to prevent or to mitigate injury to health or the environment. Griffith Energy Storage Project 4.9-5 Tetra Tech/SCH 2022120675 Draft Environmental Impact Report August 2023