'CALIFORNIA LIST' LAND DISPOSAL RULES.

In December 1986 EPA published the second in a series of proposed regulations banning land-based disposal of untreated hazardous wastes, as mandated by the 1984 Hazardous and Solid Waste Amendments to the 1976 Resource Recovery and Conservation Act (RCRA). This proposal covers liquid hazardous wastes on the California List. The list includes liquid wastes that contain polychlorinated biphenyls, cyanides, or any of eight elemental metals (arsenic, cadmium, chromium, lead, mercury, nickel, selenium, and thallium) above certain concentrations, or those that have a pH of less than 2. It also covers a new category: liquid and solid hazardous wastes that contain halogenated organic compounds (HOCs) above certain concentrations. This article discusses the effects of the proposed rule, exemptions, public comment request, and other aspects of the subject.