In Re: Methyl Tertiary Butyl Ether Products Liability Litigation

Background

The Commonwealth of Pennsylvania sued Shell Oil Company and other defendants over MTBE contamination. The opinion addresses Pennsylvania’s May 14, 2025 motion concerning the court’s April 30, 2025 opinion. That earlier opinion granted the defendants partial summary judgment—a ruling that resolves issues without a trial—on Pennsylvania’s request for future costs of investigating MTBE contamination at certain Focus Sites.

Pennsylvania asked the court to reconsider the April 30 decision. In the alternative, it asked the court to certify that decision for an interlocutory appeal, meaning an appeal before the case has ended.

Reconsideration

The court explained that reconsideration is available only in limited circumstances, such as an intervening change in controlling law, new evidence, or a need to correct a clear error or prevent serious injustice. Pennsylvania relied on arguments it had previously raised and asserted that the April 30 opinion contained clear error.

The court rejected that argument. It explained that the usefulness of investigating or mapping the location of contamination did not establish that Pennsylvania had a legal right to recover the costs. To avoid summary judgment, Pennsylvania needed evidence from which a jury could find that it more likely than not would incur future costs to address harm caused by the defendants. The court found that Pennsylvania could not show that additional contamination requiring restoration or remediation was likely to be found at the Focus Sites at issue.

The court also rejected Pennsylvania’s reliance on cases involving statutory cleanup costs and medical monitoring. It stated that the cited cleanup statute did not apply to this case and that medical-monitoring cases concerned the risk of future disease, not investigation of the extent of a past injury. The court further concluded that Pennsylvania’s arguments about an earlier opinion in the same multidistrict litigation did not overcome the lack of evidence required to support the requested damages.

Interlocutory Appeal

The court also denied certification for an interlocutory appeal under 28 U.S.C. § 1292(b). That procedure requires, among other things, a controlling legal question, substantial disagreement about the question, and a showing that an immediate appeal may materially advance the end of the litigation.

The court found that Pennsylvania had not demonstrated that an immediate appeal would materially advance the case. The disputed issue involved one category of costs in an eleven-year-old case, and the April 30 opinion addressed one of ten motions for partial summary judgment. Pennsylvania did not explain why an immediate appeal, rather than an appeal after final judgment, would meaningfully advance resolution of the litigation.

Disposition

Judge Denise Cote denied Pennsylvania’s motion for reconsideration and, in the alternative, denied its motion for certification of an interlocutory appeal.