Description
This research investigates the presence of per- and polyfluoroalkyl substances (PFAS) in both landfill leachate and gas at the Three Rivers Solid Waste Authority (TRSWA) landfill in South Carolina. Results from TRSWA were compared to data from previously published national studies to help contextualize PFAS concentrations and identify trends that could inform future monitoring and management strategies.
Among the key observations: certain PFAS compounds in TRSWA’s leachate were measured at levels 2–4 times higher than those reported in a 2017 national survey. In landfill gas, TRSWA’s total PFAS concentrations fell near the median of values reported in a multi-state study of U.S. landfills. The compound 6:2 fluorotelomer alcohol (6:2 FTOH) was found to be the dominant PFAS in the gas phase, with levels exceeding those reported in a few other southeastern U.S. landfills included in the comparison.
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