The D.C. Circuit ordered the Maryland Department of Environment to act on a natural gas company's application to construct a natural gas compressor station in the state. The company applied for and received a certificate of public convenience and necessity from FERC. But before it can begin construc...

The D.C. Circuit denied states' and industry groups' petitions challenging EPA rules establishing CAA permitting requirements in states that do not have implementation plans for greenhouse gases. The rules were designed to ensure that a permitting authority was available to issue the required greenh...

The Third Circuit upheld an EPA rule imposing sulfur dioxide (S02) limits on a coal-fired power plant in Pennsylvania whose emissions travel directly across a river into areas of New Jersey. The owner of the plant challenged EPA's authority to impose direct regulations on the plant before the time t...

The Tenth Circuit upheld an EPA rule in which it rejected Oklahoma's regional haze plan to limit sulfur dioxide emissions at electric utility power plants and replaced it with its own more stringent regulations via a federal implementation plan (FIP). Petitioners—the state of Oklahoma, the utility...

The Tenth Circuit affirmed an EPA order denying an environmental group's petition to object to a CAA Title V operating permit for a coal-fired power station in Colorado. In its petition for an objection, the group argued that the permit needed to include a plan to bring the power station into compli...