EPA made final amendments to certain CAA regulations pertaining to Indian tribes.

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 proposed revisions to the NESHAPs for the production of polyvinyl chloride and copolymers during periods of startup, shutdown, and malfunctions, including requirements on demonstration of initial and continuous compliance, continuous monitoring provisions, and recordkeeping and reporting.

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.

SIP Approval: Utah (substantial inadequacy of NAAQS).

SIP Approval: Kentucky (maintenance plans for the 1997 eight-hour ozone NAAQS).

SIP Approval: Indiana (volatile organic compound (VOC) emissions at gasoline dispensing facilities).

SIP Approval: Illinois (definition of volatile organic compound).

SIP Approval: Florida (PSD construction permit program).

SIP Approval: District of Columbia (1997 eight-hour ozone and 1997/2006 fine particulate matter (PM) NAAQS).