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Draft Supplemental Environmental Impact Report Page 1V.E-2 Forward Inc. Landfill 2014 Expansion Project groundwater cleanup projects, and establishes cleanup and action levels for subsurface contamination that are equal to, or more restrictive than, federal levels. Office of Environmental Health Hazard Assessment The mission of the OEHHA is to protect and enhance public health and the environment by objective scientific evaluation of risks posed by hazardous substances. A HRA involving four steps;hazards identification, exposure assessment, toxicity assessment, and risk characterization, was conducted in accordance with published guidance, including the OEHHA Air Toxics Hot Spots Program Risk Assessment Guidelines. State Water Resource Control Board The project site is located in the jurisdiction of the Central Valley RWQCB. The Water Board is authorized by the California Porter-Cologne Water Quality Act of 1969 to implement water quality protection laws. The Water Board provides oversight for sites at which the quality of groundwater or surface waters is threatened, and has the authority to require investigations and y remedial actions. California's hazardous waste laws are codified in the California Code of Regulations (CCR). In general, a material is a hazardous waste if it poses a threat to human health or the environment. Under California law, approximately 800 substances are listed as potentially hazardous depending on their property or combination of properties. A hazardous waste can be present in a liquid, semi-solid, solid, or gaseous form. California law requires that the generator of a potentially hazardous waste determine if said material is in fact hazardous'and stipulates the criteria and analytical methods for the determination of a waste as hazardous.' In 1997, the California Administrative Code of Regulations was modified and the RWQCB and CalRecycle _ requirements for landfills were consolidated into Title 27. Numerous plans and permits are required by the various regulatory agencies responsible for the regulation of sites that use or dispose of hazardous materials or wastes. The key plans and permits applicable to the use, treatment, or storage of Class II (designated) waste and hazardous waste at the Forward landfill operation include: • Hazardous Material Management Plan (HMMP) • Storm Water Pollution Prevention Plan (SWPPP) • Waste Discharge Requirements (WRDs) Order • Report of Disposal Site Information (RDSI) and Report of Waste Discharge (RWD) which is now encompassed in the Joint Technical Document (JTD) Local hazardous waste regulations on the county and city level involve setting standards of care for the use, storage, and handling of hazardous materials, as described above. Such hazardous waste-related regulations and proposed landfill programs include the RWQCB orders, RWQCB- _ required Solid Waste Assessment Test (SWAT), National Pollutant Discharge Elimination System, (NPDES) permits, workers right-to-know, Hazardous Materials Management Plan (HMMP), Storm Water Pollution Prevention Plan (SWPPP), and California DTSC incident 'CCR,Section 66471. CCR,Section 66680 and 66693 et seq.