Seventh Circuit Vacates Trial Court’s Decision to Apportion Liability from Commingled Groundwater Plume
On September 3, 2021, the United States Court of Appeals, Seventh Circuit, vacated the lower court’s determination that liability for remediating the environmental harm associated with a groundwater plume was divisible under Section 107 of CERCLA. In Von Duprin LLC v. Major Holdings, LLC, the environmental harm stemmed from a groundwater plume created from decades of known pollution involving four parcels and primarily four parties. No. 20-1711 (7th Cir. Sept. 3, 2021). As we reported here, the trial court’s apportionment of liability appeared to intermingle factors relevant to both an allocation and apportionment of liability. The appellate court found the same, and vacated the trial court’s apportionment of liability due in part to the apparent application of factors relevant to an allocation of joint liability. At a threshold level, the appellate court also vacated the trial court’s determination at summary judgment that a reasonable basis existed to apportion liability based on causal factors, rather than allocate joint liability based on equitable factors. The appellate court affirmed, however, the trial court’s holdings related to the bona fide prospective purchaser (BFPP) defense, compliance with the National Contingency Plan (NCP), and the admission of expert testimony.