µg PCB* /kg dry sediment . 21.8 ± 1.1Concentrations of individual Polychlorinated Biphenylsµg/kg of dry sediment µg/kg of dry sedimentPCB 101 . 1.62 ± 0.21PCB 180. 1.17 ± 0.15PCB 138 . 1.98 ± 0.28PCB 194. 0.23 ± 0.04PCB 151 . 0.48 ± 0.08