RICHMOND, Va. - A Fourth Circuit U.S. Court of Appeals panel on April 4 affirmed a federal judge's rulings that a defendant company in a Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) suit is liable for contamination at a former fertilizer manufacturing site in Charleston, S.C., through successor liability and that other parties in the suit were potentially responsible parties (PRPs) under the act as a result of activities they conducted on the property (PCS Nitrogen Inc., et al. v. Ashley II of Charleston LLC, et al., Nos. 11-1662, 11-2087, 11-2099, 11-2104 and 11-2297, 4th Cir.; 2013 U.S. App. LEXIS 6815).