Comparison of measured aqueous PCB concentrations with those (a) estimated from KOW values, the sediment fOC and solid phase concentrations according to eq 1, and (b) estimated from solid phase concentrations, the sediment fOC and fBC and KOW values according to eqs 5 and 6. Data represent Hunters Point sediment (⧫), Lake Hartwell sediment (○), Grasse River sediment (◻), Crab Orchard Lake sediment (•), Milwaukee River location 1 sediment (Δ), Milwaukee River location 2 sediment (×), and Niagara River sediment (+). The line is drawn to show a 1:1 relationship between estimated and measured data.