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Community questions PQ LLC's PCB and VOC discharges as DEP reviews Title V permit changes
Summary
During a DEP public hearing in Chester, residents and advocates questioned PQ LLC's reported PCB discharges (up to 548,000 pg/L) and urged DEP to require VOC monitoring and continuous emissions monitors; DEP described the proposed PQ changes as administrative with no new sources or emissions increases.
Residents and environmental groups used a Pennsylvania Department of Environmental Protection public hearing in Chester to press questions about air and wastewater pollution from PQ LLC's sodium-silicate manufacturing facility and to urge additional monitoring as the department reviews a Title V permit modification.
Lauren Minsky, a Delaware County resident and instructor in health studies, cited 2025 permit-reporting that she said showed PQ discharged polychlorinated biphenyls (PCBs) into the Delaware River at concentrations as high as 548,000 picograms per liter. Minsky noted a 2013 Delaware River Basin standard of 16 pg/L for PCBs in the estuary and told…
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