The fact that neither perfluorooctanoic acid (PFOA) nor perfluorooctane sulfonic acid (PFOS) is classified as a hazardous substance may prove fatal to plaintiffs’ efforts to convince a federal court to allow a novel citizen suit to proceed. In the case of Kristen Giovanni, et al. v. Navy which is pending in the U.S. District Court for the Eastern District of Pennsylvania, plaintiffs brought a citizen suit under a Pennsylvania cleanup statute seeking to compel the Navy to monitor residents for potential health issues linked to PFOS and PFOA exposure. In October 2018, the Third Circuit Appellate Court affirmed an earlier ruling from the district court that had rejected plaintiffs’ efforts to compel the Navy to undertake a government-led health assessment, finding that such a request constituted an impermissible challenge to an ongoing CERCLA response action. The Third Circuit concluded that plaintiffs' request for a government-led health study sought injunctive relief that could potentially interfere with the ongoing response action at the site. Plaintiffs’ request for medical monitoring, on the other hand, sought to compel the Navy to fund a trust, which the Third Circuit concluded was not a challenge to ongoing response actions at the site.
During a hearing following remand from the Third Circuit, the district court judge noted that Section 1115 of Pennsylvania’s Hazardous Sites Cleanup Act (HSCA) (which provides for a citizen-suit right of action) only provides relief for HSCA designated “hazardous substances.” Although plaintiffs’ counsel argued that PFOA and PFOS fell within the HSCA’s definition of “hazardous substances,” in fact neither substance has been designated as a “hazardous substance” under CERCLA, nor have they been so designated by the Pennsylvania Department of Environmental Protection. In what may be foreshadowing of how the court intends to rule, the judge noted that if he were to dismiss plaintiffs’ case, in the event that either the state or U.S. EPA were to designate PFOA and/or PFOS as “hazardous substances,” plaintiffs would be able to file a new lawsuit.