The Ninth Circuit affirmed the dismissal of an environmental group's citizen suit against two electric companies alleging that their utility poles discharged wood preservative into the environment in violation of the CWA and RCRA. The group failed to state a claim under the CWA because discharges of...

The Fourth Circuit affirmed a lower court decision allocating response costs to various PRPs in connection with the cleanup of hazardous substances at a former fertilizer manufacturing site in Charleston, South Carolina. After incurring response costs, the current owner of a portion of the site brou...

A district court held that EPA has no mandatory or nondiscretionary duty to make a determination as to whether lead emissions from general aviation aircraft engines using aviation gasoline endanger the public health or welfare under CAA §231(a)(2)(A). A finding that emissions cause or contribute to...

The Sixth Circuit held that the CAA does not categorically prevent EPA from challenging preconstruction projections of whether and to what extent emissions will increase following construction. The preconstruction projection determines whether the project constitutes a “major modification” and t...

A district court held that genuine issues of material fact preclude a grant of summary judgment in a petroleum distributor's contribution claim against an oil company for costs incurred cleaning up hazardous substance contamination at a gas station and bulk petroleum storage plant formerly leased by...