Abstract

sediment samples at 9 of 20 sites and ranged in concentration from 14 to 120 [ig/kg. Sediment samples containing PCBs were primarily from areas with urban land uses. PCBs occur in fish tissues at 12 of 15 sites and ranged in concentration from 7 to 47 [pg/kg. The rate of PCB occurrence in fish was similar for areas with agricultural and urban usage. PCBs were in either sediment or fish in all but three sites. Little correlation was noted, however, between occurrence of PCBs in fish and sediment from the same sampling site. Presence of PCBs can threaten environmental and human health; however, in this study, no samples exceeded levels that are likely to pose an environmental or human health risk.

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