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Olychlorinated biphenyl (PCB) concentrations in fish tissue collected during the 1990's from selected sites in the Delaware Rjver Basin were compared with concentrations in fish tissue collected during 1969-88. Data collected by State and Federal agencies on concentrations in whole-body common carp (Cyprinus carpio) and white sucker (Catostomus commersoni), and edible portions of American eel (Anguilla rostrata), smallmouth bass (Micropterus dolomieu), and channel catfish (Ictalurus punctatus) during 19^9-98 were compiled to define temporal trends in concentrations of PCBs in fish tissue from selected segments of the Delaware River, Lehigh River, Schuylkill River, and Brandywine Creek.

water-resources investigations report

Trends in concentrations of polychlorinated biphenyls in fish tissue from selected sites in the Delaware River basin in New Jersey, New York, and Pennsylvania, 1969-98