SITE INFORMATION AND CORRESPONDENCE_1992

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Petroleum Contaminated Soil -3- 15 August 1986 • Any on-site or off-site treatment option must gain the approval of the local aqencies such as health and fire departments and air pollution control district (the latter approval is not likely in usually urban, "non-attainment areas"). In many cases, DHS must also give approval. These agencies have primary authority for human nealth impacts which could result from treatment activities. The Regional Board should not assume authority to permit treatment without local input. • On-site and off-site treatment or reuse programs may require WDRs to protect surface and/or ground water quality. • .Any on-site or off-site treatment program must include adequate monitoring to demonstrate the effectiveness of the treatment. This may include ground water and/or vadose zone monitoring in addition to periodic soil samplinq and analysis for toxic and/or hazardous constituents. • Manrifestina is required for transport of soils considered to be 'hazardous' by DHS. DHS s currently studying this requirement for qasoline ana diesel contaminated Solis for possible exemptions. iA manifest requirement for old tanks, requiring triple rinsing and disposal of the tank and rinsate in a Class I or Class I I unit, may be enforced by DHS in the near future.] • Currently, no Class II landfills exist in Region 5 that are permitted to receive soils contaminated with fuels (gasoline, and diesel) if classified as 'designated wastes'. Therefore, landfilling of these soils must be at Class I sites. • The Regional Board should encourage the treatment and/or reuse of petroleum contaminated soils in cases where these options exist. Landfilling of these materials is poor use of our limited landfill capacity. • Cleanup levels are site-specific, based upon proper site characterization, potential beneficial uses of water that could be impaired, local health and safety issues, and future exposures that may occur. • Liability — The owner of a contaminated soil is responsible for its proper handling and disposal Waste manaqement unit operators also assume some liability upon accepting contaminated soils for disposal. Should someone purchase contaminated soil for some reuse, most or all of the liability may be transferred to the purchaser, unless the soil's potential health and environmental hazards are misrepresented in the transaction. When advising persons of their options for managing contaminated soils, staff should inform the parties involved of their continued responsibilities and state that the Regional Board does not assume liability in providing such advise. It is hoped that this information will be helpful in future cases where soils have been contaminated with petroleum fractions. Attachments