The D.C. Circuit held that energy companies lack standing to challenge EPA's determination that carbon dioxide (CO2) streams injected into Class VI wells for the purpose of geologic sequestration constitute "solid waste" subject to RCRA. Class VI wells are designated to receive CO2 streams generated...

A district court held that a PRP established the divisibility defense and, therefore, is not jointly and severally liable for cleanup costs at the Lower Fox River Superfund site in Wisconsin. On remand from the Seventh Circuit, the district court was ordered to reconsider the PRP's divisibility defe...

The D.C. Circuit ordered EPA to submit a timeline for when it will issue its financial assurance rules under CERCLA to ensure that industries that handle hazardous substances have the financial means to clean up any releases. It has been nearly 30 years since Congress charged EPA with issuing such r...

The D.C. Circuit held that a home builders' association lacked standing to challenge EPA's and the U.S. Army Corps of Engineers' determination that two reaches of the Santa Cruz River in southern Arizona constitute "traditional navigable waters" (TNW) under the CWA. The court previously held in a si...

A district court held that a corporation subject to an EPA unilateral administrative order (UAO) in connection with the Columbia Nitrogen Superfund site in Charleston, South Carolina, may seek contribution under CERCLA §113 and not §107. Defendant companies argued that the corporation was preclude...