SIP Proposal: Ohio and West Virginia (attainment plans for the Steubenville Ohio-West Virginia 2010 sulfur dioxide nonattainment area).

SIP Approval: California (attainment plan and motor vehicle emissions budgets for the Plumas County 2012 fine particulate matter nonattainment area).

SIP Approval: Indiana (attainment plan for the Indianapolis and Terre Haute 2010 sulfur dioxide nonattainment areas).

SIP Approval: Ohio (attainment plan for the Lake County one-hour sulfur dioxide nonattainment area).

SIP Proposal: California (attainment plan for the Plumas County fine particulate matter nonattainment area).

SIP Approval: Pennsylvania (demonstration of attainment for the Warren County, Pennsylvania, 2010 one-hour sulfur dioxide nonattainment area).