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89 FR 26817

SIP Proposal: California (revisions to meet requirements for the 1997 eight-hour ozone NAAQS in the Riverside County nonattainment area). 

89 FR 26813

SIP Proposal: Arizona (revisions concerning emissions of volatile organic compounds, nitrogen oxides, particulate matter, and sulfur oxides for the Maricopa County Air Quality Department).  

89 FR 26620

EPA proposed to revise the existing secondary sulfur dioxide NAAQS, to retain the existing secondary standards for nitrogen oxides and particulate matter, and to revise the data handling requirements for the proposed secondary sulfur oxide NAAQS.

89 FR 26115

SIP Proposal: Ohio (particulate matter rules).

89 FR 25810

SIP Approval: Virginia (second maintenance plan for the 1997 eight-hour ozone NAAQS in the Fredericksburg area). 

89 FR 25841

SIP Proposal: New Jersey (partial approval and partial disapproval of revisions to 2015 ozone infrastructure requirements). 

89 FR 25838

SIP Proposal: Georgia (removal of requirement for enhanced Stage I gasoline vapor recovery systems at existing gasoline dispensing facilities in Catoosa, Richmond, and Walker Counties). 

89 FR 25849

SIP Proposal: North Carolina (revision to approved motor vehicle emissions budgets). 

89 FR 25555

SIP Proposal: Kentucky (updates to geographical boundary description and attainment status designation for the Henderson-Webster nonattainment area for the 2010 sulfur dioxide primary NAAQS).

89 FR 25216

SIP Proposal: Colorado (base-year emissions inventory for the Denver Metro/North Front Range 2015 eight-hour ozone nonattainment area, certification that existing Air Pollutant Emissions Notice (APEN) program fulfills the CAA’s emission statement rule requirement, and new requirement for annual certification of APEN reported emissions).