EPA announced the availability of a final report titled, Problem Formulation for Human Health Risk Assessments of Pathogens in Land-Applied Biosolids.

EPA entered into a settlement under CERCLA concerning the East Calloway County Middle School Mercury Spill site in Murray, Kentucky, that requires payment of past U.S. response costs incurred at the site.

EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay $208,990 in U.S. response costs incurred at the Big River Mine Tailings Superfund site in St. Francois County, Missouri.

EPA entered into two proposed administrative settlements under CERCLA and RCRA that require the settling party to perform certain cleanup actions at the Caribbean Petroleum Refining, LP facility in Bayamon, Puerto Rico, and to assume responsibility for the UST systems and required cleanup work at 147 gasoline service stations.

EPA proposed to approve revisions to Wisconsin's hazardous waste management program; see above for direct final rule.

EPA approved negative declarations and requests for EPA withdrawal of its CAA §§111(d) and 129 plan approval for HMIWI, large municipal waste combustor (LMWC), small municipal waste combustor (SMWC), and other solid waste incinerator (OSWI) units from Florida, Kentucky, North Carolina, and South Carolina.

EPA promulgated amendments to the new source performance standards and emissions guidelines for hospital/medical/infectious waste incinerators (HMIWIs) after remand by the D.C. Circuit.

EPA withdrew rulemaking that granted a site-specific treatment variance to U.S. Ecology Nevada in Beatty, Nevada, and withdrew an existing site-specific treatment variance issued to Chemical Waste Management, Inc. in Kettleman Hills, California, due to adverse comment.

EPA approved revisions to Wisconsin's hazardous waste management program.

EPA approved Florida's plan under the CAA for implementing and enforcing the emissions guidelines applicable to existing large municipal waste combustors.