SIP Approval: California (volatile organic compound (VOC) emissions for the Antelope Valley air quality management district and the Placer County, Santa Barbara, and Ventura County air pollution control districts)

SIP Approval: California (nitrogen oxide emissions for the San Joaquin Valley unified air pollution control district)

SIP Approval: Alabama (removal of PSD program limitation)

EPA determined that the Columbia Falls and Libby nonattainment areas in Montana attained the PM NAAQS.

EPA amended NESHAPs for gasoline distribution bulk terminals, bulk plants, and pipeline and gasoline-dispensing facilities.

EPA extended attainment of the 1997 eight-hour ozone NAAQS for the Delaware, Maryland, and Pennsylvania portions of the Philadelphia area moderate nonattainment area until June 15, 2011.

EPA extended attainment of the 1997 eight-hour ozone NAAQS for the New Jersey portion of the Philadelphia area moderate nonattainment area until June 15, 2011.

SIP Proposal: Missouri (disapproval of interstate transport of pollution plan).

EPA amended the new source performance standards for electric utility and industrial-commercial-institutional steam-generating units.

SIP Proposal: Missouri (idling of heavy-duty diesel vehicles; see above for direct final rule).