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76 FR 24421

SIP Proposal: New Mexico (1997 eight-hour ozone and fine PM NAAQS and PSD program).

76 FR 30894

SIP Proposal: Colorado (permit program fees and definition of nitrogen dioxide)

76 FR 28707

SIP Proposal: Colorado (attainment of the 1997 ozone NAAQS).

76 FR 30896

SIP Proposal: California (NOx and sulfur oxide emissions for the South Coast air quality management district)

76 FR 28696 May 18, 2011

SIP Proposal: California (termination of backsliding fees for the Sacramento Metro one-hour ozone nonattainment area).

76 FR 24976

EPA proposed NESHAPs from coal- and oil-fired electric utility steam-generating units and revised NSPS for fossil fuel-fired units.

76 FR 27898

SIP Approval: Virginia (PSD permitting for GHGs)

76 FR 31237

SIP Approval: Pennsylvania (attainment of the 1997 eight-hour ozone NAAQS for the Pittsburgh-Beaver Valley nonattainment area)

76 FR 31245

SIP Approval: North Carolina/South Carolina (extension of the 1997 eight-hour ozone moderate attainment date for the bi-state Charlotte area to June 15, 2011)