SIP Proposal: California (limited approval of interstate transport plan)

SIP Approval: Indiana (sulfur dioxide (SO2) and PM limits).

SIP Proposal: California (NOx and sulfur oxide emissions for the South Coast air quality management district)

SIP Approval: Georgia (attainment of the 1997 annual average fine PM NAAQS for the Rome nonattainment area.

SIP Proposal: California (VOC emissions for the Placer County and Ventura County air pollution control districts; see above for direct final rule).

SIP Proposal: California (VOCs for the Mojave Desert air quality management district; see above for direct final rule).

SIP Approval: Colorado (partial approval of interstate transport of pollution plan)

SIP Approval: California (energy tracking system for the South Coast air quality management district).

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

EPA granted reconsideration of certain provisions of the Mandatory Greenhouse Gas Reporting Rule promulgated on November 30, 2010.