The D.C. Circuit vacated an EPA memorandum directing regional air districts to apply different criteria when making source determinations in its Title V or new source review (NSR) permitting decisions for facilities located in areas within the jurisdiction of the U.S. Court of Appeals for the Sixth ...

A district court dismissed an individual's CAA lawsuit against a Colorado utility and the state's environmental agency in which he alleged that toxic fumes were emitted into his neighborhood following a fire at a nearby power plant. The plaintiff lacks standing to file suit. Although he claims that ...

The D.C. Circuit upheld EPA’s decision to defer adopting new secondary NAAQS for oxides of sulfur (SOx) and nitrogen (NOx) pending further scientific study. Citing doubts about the accuracy of its aquatic acidification index model—used to quantify the connection between SOx and NOx in the air an...

The D.C. Circuit upheld EPA’s decision denying environmental groups’ request to add coal mines to the regulated list of stationary source categories under the CAA. In denying the groups’ petition for rulemaking, EPA made it clear that the denial was not a determination as to whether coal ...