Atlantic Richfield Co. v. Christian

The Court decided that landowners within a federal Superfund site count as potentially responsible parties under CERCLA, even if EPA never ordered them to pay for cleanup. The case also involved whether those owners can use state-law claims to seek cleanup work beyond the EPA-approved remedy.

The Court issued its decision on April 20, 2020, but the prompt does not provide the vote count or opinion lineup.

This affects homeowners, businesses, and cleanup companies at polluted sites. For example, an owner who wants extra soil or water cleanup may need EPA approval before doing that work.

The case's legal answers would be applied in the Montana litigation on the landowners' restoration claims. More broadly, parties at other Superfund sites can expect fights over extra cleanup requests to account for EPA approval requirements.

The dispute was whether landowners at a Superfund site could seek extra cleanup under state law beyond the EPA plan. It also asked whether they needed EPA approval first.

Property owners inside Superfund sites are directly affected, along with companies paying for cleanup. Extra restoration demands can change costs, timelines, and federal oversight.

The lower-court case moves forward using the Supreme Court's answers. Any proposed extra cleanup work must be evaluated with EPA's approval role in mind.