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76 FR 6559

SIP Approval: Pennsylvania (conformity, contingency, and control measures for the Pennsylvania portion of the Philadelphia-Wilmington-Atlantic City moderate 1997 eight-hour ozone nonattainment area)

76 FR 9650

SIP Approval: Maryland (definition of "fuel-burning equipment")

76 FR 9658

SIP Approval: Kansas (PSD permit requirements)

76 FR 9655

SIP Approval: Illinois (waiver of nitrogen oxide reasonably available control technology requirements)

76 FR 9652

SIP Approval: District of Columbia (update of materials available for public inspection)

75 FR 6331

SIP Approval: Colorado (partial approval of Regulation 3 revisions)

76 FR 10761

EPA delegated authority to Iowa, Kansas, Missouri, and Nebraska to implement and enforce NESHAPs and new source performance and maximum achievable control technology standards.

76 FR 9450

EPA added the gold mine ore processing and production area source category to the list of those regulated under the CAA due to mercury emissions.

76 FR 8300

EPA determined that Arizona failed to submit an SIP for the Maricopa serious particulate matter (PM) nonattainment area by the required deadline.