Publication Summary

Subsequent to the November 1986 flood which resulted in the spillage of wood-preserving chemicals at American Crossarm and Conduit (Chehalis, Washington), water and sediment samples were collected for analysis. Elevated concentrations of pentachlorophenol and poly-nuclear aromatic hydrocarbons were detected in water and sediment from a storm drain lagoon which discharges to Dillenbaugh Creek. Pentachlorophenol was detected in the creek at concentrations near and above the EPA chronic water quality criterion for protection of aquatic organisms. Several polychlorinated dioxins (not TCDD) and dibenzofurans were detected in bottom sediments from the storm drain lagoon and creek.