EPA proposed technical revisions to the electronics manufacturing and the petroleum and natural gas systems source categories of the Mandatory Reporting of Greenhouse Gases Rule.

SIP Proposal: Oregon (interstate transport provisions and various updates).

SIP Proposal: North Carolina (redesignation to attainment for the Hickory-Morganton-Lenoir 1997 annual fine PM nonattainment area).

SIP Proposal: District of Columbia/Maryland/Virginia (attainment of the 1997 eight-hour ozone NAAQS for the District of Columbia, Maryland, and Virginia moderate nonattainment areas; see above for direct final rule).

SIP Proposal: Delaware (volatile organic compound emissions).

SIP Proposal: Delaware (volatile organic compound (VOC) emissions).

SIP Approval: Pennsylvania (PM emissions from outdoor wood-fired boilers).

SIP Approval: District of Columbia/Maryland/Virginia (numerous revisions to the 1997 eight-hour ozone NAAQS for the District of Columbia, Maryland, and Virginia moderate nonattainment areas)

EPA withdrew amendments made on June 20, 2011, to the plating and polishing area source category NESHAP.

EPA announced the availability of Review of the National Ambient Air Quality Standards for Lead: Risk and Exposure Assessment Planning Document and seeks public comment.