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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.

76 FR 8298

SIP Approval: Virginia (definition of VOC)

76 FR 10249

SIP Approval: Texas (VOC emissions from consumer-related sources)

76 FR 9656

SIP Approval: Maryland (volatile organic compound (VOC) emissions from industrial solvent cleaning operations)

76 FR 31362

United States v. City of Wyandotte, No. 2-11-cv-12181 (E.D. Mich. May 18, 2011). A settling CAA defendant responsible for permit violations at a power plant in Wyandotte, Michigan, must pay a $112,000 civil penalty, must perform a supplemental environmental project at an estimated cost of $210,000, and must install new emission controls and implement operational practices to reduce emissions.