88 FR 57882
SIP Approval: Texas (updates to public notice and procedural rules and removal of obsolete provisions).
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88 FR 57358
SIP Approval: South Carolina (updates to PSD and nonattainment new source review regulations).
88 FR 57361
SIP Approval: California (revisions concerning nitrogen oxide emissions from boilers, process heaters, and steam generators in the San Diego County Air Pollution Control District).
88 FR 57014
SIP Proposal: Arkansas (revisions to air pollution control regulations).
88 FR 57020
SIP Proposal: Virginia (second maintenance plan for the 1997 eight-hour ozone NAAQS in the Norfolk-Virginia Beach-Newport News, Virginia Area).
88 FR 57018
SIP Proposal: Missouri (revisions related to control of emissions from volatile organic liquid storage).
Wyoming v. United States Environmental Protection Agency
The Tenth Circuit affirmed in part and vacated in part EPA's partial approval and partial disapproval of Wyoming's SIP addressing emissions at coal-fired power plants to reduce regional haze. EPA approved the SIP as to the Naughton plant, but disapproved it for the Wyodak plant, and substituted, thr...
Heal Utah v. United States Environmental Protection Agency
The Tenth Circuit denied environmental groups' petition to review approval of Utah's July 2019 revised SIP addressing regional haze. The groups argued EPA abused its discretion by approving the SIP because Utah's alternative measure did not satisfy CAA national visibility goals, and that the Agency ...
88 FR 56787
SIP Proposal: Missouri (requirements for emissions guidelines and compliance times for municipal solid waste landfills).
88 FR 55576
SIP Approval: New Jersey (revisions to 2017 calendar year ozone precursor emission inventory for volatile organic compounds, nitrogen oxides, and carbon monoxide for the Northern New Jersey portion of the New York-Northern New Jersey-Long Island NY-NJ-CT ozone nonattainment area and the Southern New Jersey portion of the Philadelphia-Wilmington-Atlantic City, PA-NJ-MD-DE ozone nonattainment area).