SIP Proposal: Illinois (NOx waiver request for the Chicago-Gary-Lake County, Illinois-Indiana, and St. Louis, Missouri-Illinois, eight-hour ozone nonattainment areas).

EPA announced the availability of a draft document titled, First External Review Draft Integrated Science Assessment for Ozone and Related Photochemical Oxidants, for public comment.

EPA withdrew its previous adequacy finding on the 2012 motor vehicle emission budgets for Connecticut's two eight-hour ozone nonattainment areas.

EPA announced the availability of a document titled, Policy Assessment for the Review of the Secondary National Ambient Air Quality Standards for Oxides of Nitrogen and Sulfur.

EPA withdrew its adequacy finding of the 2010 PM motor vehicle emission budget for the Maricopa County nonattainment area.

SIP Proposal: Texas (disapproval of interstate transport plan).

SIP Proposal: Oregon (interstate transport of pollution).

SIP Proposal: Ohio (emissions of organic materials from stationary sources).

SIP Proposal: North Carolina/South Carolina (attainment of the 1997 eight-hour ozone NAAQS for the Charlotte-Gastonia-Rock Hill nonattainment area).

SIP Proposal: New Mexico (PSD permitting requirements for greenhouse gas emissions).