SIP Approval: Minnesota (PSD rules).

SIP Proposal: Louisiana (regional haze requirements for the Entergy R. S. Nelson facility).

SIP Proposal: Louisiana (regional haze requirements for the Entergy R. S. Nelson facility).

SIP Proposal: Louisiana (regional haze requirements for the Entergy R. S. Nelson facility).

EPA approved New Jersey's delegation of authority request to implement and enforce the federal plan for sewage sludge incineration units.

EPA approved New Jersey's delegation of authority request to implement and enforce the federal plan for sewage sludge incineration units.

EPA approved New Jersey's delegation of authority request to implement and enforce the federal plan for sewage sludge incineration units.

SIP Approval: Maryland (2011 base year inventory for the 2008 eight-hour NAAQS for the Maryland portion of the Philadelphia-Wilmington-Atlantic City nonattainment area).

SIP Approval: Maryland (2011 base year inventory for the 2008 eight-hour NAAQS for the Maryland portion of the Philadelphia-Wilmington-Atlantic City nonattainment area).

SIP Approval: Maryland (2011 base year inventory for the 2008 eight-hour NAAQS for the Maryland portion of the Philadelphia-Wilmington-Atlantic City nonattainment area).