EPA proposed to determine that the District of Columbia-Maryland-Virginia nonattainment area has clean data for the 2015 eight-hour ozone NAAQS.

SIP Approval: Pennsylvania (clean data determination for the Allegheny County 2012 fine particulate matter nonattainment area). 

SIP Proposal: Pennsylvania (clean data determination for the 2012 annual fine particulate matter NAAQS in the Allegheny County nonattainment area).

EPA proposed to rescind its previously issued clean data determination for the Yuma, Arizona, moderate nonattainment area for the 1987 24-hour particulate matter NAAQS.

EPA approved Wisconsin's request to revise the designation of the Sheboygan County 1997 and 2008 ozone nonattainment area, and made a clean data determination for the Inland Sheboygan County 2008 ozone nonattainment area.

SIP Proposal: Utah (clean data determination for the Salt Lake City, Utah, 2006 24-hour fine particulate matter nonattainment area).

SIP Approval: Utah (clean data determination for the Provo, Utah, 2006 24-hour fine particulate matter nonattainment area).

SIP Proposal: Utah (clean data determination for the Provo, Utah, 2006 24-hour fine particulate matter nonattainment area).