SIP Approval: Indiana (discontinuance of vehicle inspection and maintenance program in Clark and Floyd Counties.

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.