76 FR 10817
SIP Proposal: Nevada (nonattainment of the 24-hour NAAQS for PM for the Truckee Meadows area by December 31, 2001, but current attainment)
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76 FR 10815
SIP Proposal: Missouri/Illinois (attainment of the 1997 eight-hour ozone NAAQS for the St. Louis metropolitan nonattainment area)
76 FR 9281
SIP Propsal: Massachusetts (carbon monoxide maintenance plan for Lowell)
76 FR 9705
SIP Proposal: Maryland (definition of "fuel-burning equipment"; see above for direct final rule)
76 FR 10544
SIP Proposal: Louisiana (revisions for 1996-2006)
76 FR 6376
SIP Proposal: Indiana/Ohio (disapproval of interstate transport submission)
76 FR 8326
SIP Proposal: Colorado (partial approval of interstate transport revisions)
76 FR 7142
SIP Proposal: California (new source review permitting requirements for the Imperial County air pollution control district)
76 FR 10530
EPA proposed a supplemental federal implementation plan for the Four Corners power plant on the Navajo Nation in New Mexico to reduce visibility-impairing pollution.
76 FR 9706
EPA proposed to find that Iowa's SIP is substantially inadequate to maintain the 2006 24-hour NAAQS for fine PM and proposed to finalize a time line for revision.