“Cooperative Federalism” or “Paternalistic Central Planning”?: U.S. Supreme Court Agrees That State Courts Can Hear Claims Over Adequacy of CERCLA Cleanups Under Certain Circumstances, But Limits Plaintiffs’ Options

The federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), also known as the Superfund law, prescribes a careful process for making decisions on how to remediate contaminated sites. To avoid delay, the statute also divests federal courts of jurisdiction to hear most challenges to the selected remedy. In its recent opinion in Atlantic Richfield Co. v. Christian, the U.S. Supreme Court agreed that CERCLA does not bar state courts from hearing claims grounded in state law that go beyond claims for money damages and seek a cleanup that goes beyond what EPA requires. The case arose in Montana, where the Anaconda Copper Smelter operated for over a century and contaminated an area of over 300 square miles with arsenic and lead. Atlantic Richfield Company acquired the financially troubled smelter in the 1970s but could not reverse its decline, and closed it by 1980. Three years later, EPA named it one of its first official Superfund sites, and since then Atlantic Richfield has spent over $450 million on a cleanup that is expected to continue until 2025. The Superfund site that Atlantic Richfield has been remediating includes numerous residential properties. The owners of 98 of those properties sued Atlantic Richfield in Montana state court in 2008, asserting state common law claims. In addition to traditional...