Concentration of polychlorobiphenyls (PCBs) in sediment samples Sed_PCB PCB concentrations in sediment, which is considered to be anything from the bed sampled by a grab or corer, including 'fluff' 2004-05-28 08:10:00.0 SDN:P02::SPCB SDN:P02::SPCB SDN:P02::SPCB 1 1 2004-05-28 08:10:00.0 accepted false