The D.C. Circuit upheld EPA's compliance deadlines for states to meet the NAAQS for fine particulate matter (PM2.5). The court previously had ruled that the framework EPA had been applying to PM2.5 was incorrect, and ordered the Agency to apply a stricter statutory framework. EPA then promulgated th...

The Fifth Circuit stayed EPA's regional haze plan for Oklahoma and Texas until the underlying petitions for review challenging the rule are resolved. Texas, energy companies, power plants, and others challenged EPA's action disapproving Oklahoma's and Texas' plans and imposing its own plans instead....

A district court ordered EPA to impose a "good neighbor” federal implementation plan (FIP) for Texas with respect to the 1997 fine particulate matter (PM2.5) NAAQS. In 2015, the D.C. Circuit invalidated portions of EPA's Cross-State Air Pollution Rule, which included a FIP addressing interstate tr...

A district court dismissed on summary judgment environmental groups' lawsuit against a mining company for alleged SIP violations as it relates to NAAQS for coarse particular matter (PM10). Under the Utah SIP's "material moved" provision for PM10, total material moved (ore and waste) may not exceed 1...

The Eighth Circuit affirmed a lower court decision dismissing a steel company's CAA citizen lawsuit seeking injunctive relief to stop a competitor from constructing or continuing to construct a steel mill. Arkansas's environmental agency already issued the competitor a preconstruction PSD permit. Ne...

The Sixth Circuit upheld a lower court decision sentencing an individual to 60 months in prison and ordered the individual and his co-defendants, jointly and severally, to pay $10,388,576.71 in restitution to EPA for asbestos NESHAPS violations. The individual and co-defendants formed a salvage comp...

The Fifth Circuit vacated and remanded a lower court decision that imposed no penalties against an oil company for alleged CAA permit violations at its industrial complex in Baytown, Texas. An environmental group filed a CAA citizen suit against the company, alleging violations that occurred thousan...

The Supreme Court of Texas held that the Texas Clean Air Act and the Act’s enforcement mechanisms in the Texas Water Code preempt a Houston air-quality ordinance. The Houston ordinance’s enforcement provisions are inconsistent with the statutory enforcement requirements. The ordinance allows cri...

The D.C. Circuit, in an unpublished opinion, dismissed a petition challenging an EPA computer model that states must use to estimate motor vehicle emissions when developing their strategies to comply with the CAA. Kansas and Nebraska, as well as two nonprofit organizations, alleged that the model is...

The Fifth Circuit upheld an individual's sentence and conviction for wire fraud, money laundering, and CAA violations for selling false renewable fuel credits. The individual represented to EPA and to fuel companies seeking to purchase renewable fuel credits that he manufactured renewable fuels when...