Class II Inspection of Wyerhaeuser, Longview Pulp and Paper Mill, April 16-18, 1990

The inspection also reviewed lab procedures at the mill to determine adherence to accepted protocols and advance state-of-the-art compliance inspections by contributing to ongoing developmental efforts with centrifugation. The area of study was Lower Columbia River, Longview. The sampling locations were near the Weyerhaeuser's pulp and paper mill's waste treatment plant outfall.

Samples were collected next to the 54" diffuser outfall pipe, approximately 300 ft downstream from the diffuser and approx Individual sample grabs were placed on ice and delivered to the laboratory. Target analytes included Dioxin/furans; volatile and semivolatile compounds; metals (Sb, As, Be, Cd, Cr, Cu, Pb, Hg, Ni, Se, Ag, Ti, and Zn); organochlorine pesticides and PCBs. Conventional analyses included TOC and grain size.

Analytical techniques included Dioxin/furans (EPA 8290); VOAs (EPA 8240), BNAs (EPA 8270), metals (EPA 7041, 7060, 6010, 7131, 7421, 7740, 7841), pesticides/PCBs (EPA 8080). All results, except for mercury, were reported on a dry weight basis. Mercury results were converted to dry weight basis for entry into the database using the reported percent solids content of the sediment.

Total dioxin and furan concentrations were determined by the laboratory as the sum of the individual congeners that were detected. The information for this metadata was taken from the Columbia River Basin: Sediment Database Abstracts.