California (regional haze program and interstate transport plan).

Alabama (Birmingham fine particulate matter nonattainment area).

Virginia (NAAQS for nitrogen dioxide (NO2)).

 Illinois/Missouri (attainment of the 1997 eight-hour ozone NAAQS for the St. Louis (Mo.-Ill.) metropolitan nonattainment area).

Georgia (attainment of the 1997 eight-hour ozone NAAQS for the Atlanta nonattainment area).

Georgia (attainment of the 1997 annual average fine particulate matter (PM) NAAQS for the Macon nonattainment area) 

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

The president issued a memorandum calling upon all agencies to make regulatory compliance information and enforcement data readily accessible to the public.

EPA proposed to revise the procedure for applying threshold planning quantities for extremely hazardous substances that are non-reactive solid chemicals in solution form.

United States v. U.S. Oil & Refining Co., No. 3:10-cv-05899 (W.D. Wash. Dec. 10, 2010). A settling CAA defendant that violated NESHAPs for benzene waste operations and petroleum refineries at its refinery in Tacoma, Washington, must pay a $230,000 civil penalty, must implement at least $746,000 in supplemental environmental projects, must enhance its benzene NESHAP compliance program, and must implement measures to minimize or eliminate fugitive emissions at the refinery.