The Environmental Protection Agency (EPA) is approving a state implementation plan (SIP) revision submitted by the West Virginia Department of Environmental Protection (WVDEP) on behalf of the State of West Virginia (WV). This revision pertains to West Virginia's plan for maintaining the 1997 8-hour ozone national ambient air quality standard (NAAQS) for the West Virginia portion of the Huntington- Ashland, WV-KY area (Huntington Area), comprising Cabell and Wayne Counties.

Pursuant to the Federal Clean Air Act (CAA or the Act), the Environmental Protection Agency (EPA) is proposing to approve portions of two State Implementation Plan (SIP) revisions submitted by the State of Texas for the 2008 8-hour ozone National Ambient Air Quality Standard (NAAQS). The SIP revisions proposed for approval describe how CAA requirements for vehicle Inspection and Maintenance (I/M) and Nonattainment New Source Review (NNSR) are met in the Dallas-Fort Worth (DFW) and Houston-Galveston-Brazoria (HGB) serious ozone nonattainment areas.

The Environmental Protection Agency (EPA) is taking final action to approve a revision to the North Carolina State Implementation Plan (SIP) submitted by the State of North Carolina through the North Carolina Department of Environmental Quality, Division of Air Quality (DAQ), on July 10, 2019. The SIP revision seeks to modify the State's construction and operation permitting regulations by making minor changes that do not significantly alter the meaning of the regulations. EPA is approving this revision pursuant to the Clean Air Act (CAA or Act).

The Environmental Protection Agency (EPA) is proposing a limited approval and limited disapproval of a revision to the Yolo- Solano Air Quality Management District (YSAQMD) portion of the California State Implementation Plan (SIP). This revision concerns emissions of volatile organic compounds (VOCs) from solvent cleaning and degreasing operations. We are proposing action on a local rule that regulates these emission sources under the Clean Air Act (CAA or the Act). We are taking comments on this proposal and plan to follow with a final action.