Publication Summary

A Class II Inspection was conducted on February 22-24, 1993, at the Boise Cascade Corporation paper mill wastewater treatment facility in Vancouver, Washington. The Boise Cascade Corporation operates a primary clarified aeration pond facility to treat paper production wastewater. Inspection data found that Boise Cascade was meeting NPDES permit effluent limits. Plant operation appeared to be effective and all oxygen demand and solids parameters were substantially reduced.

A Class II Inspection was conducted on February 22-24, 1993, at the Boise Cascade Corporation paper mill wastewater treatment facility in Vancouver, Washington. The Boise Cascade Corporation operates a primary clarified aeration pond facility to treat paper production wastewater. Inspection data found that Boise Cascade was meeting NPDES permit effluent limits. Plant operation appeared to be effective and all oxygen demand and solids parameters were substantially reduced.

Low nutrient concentrations in the influent required the addition of nutrients and these additions were effective and appropriate. Flow measurements by Ecology suggest that Boise Cascade's flow measurement techniques require an evaluation for effectiveness. Relatively high fecal coliform concentrations may pose problems for receiving water quality. Dioxin/Furans were detected in influent and primary clarifier sludge samples, but not in effluent samples. Effluent displayed some acute toxicity to rainbow trout in 100% effluent and no chronic toxicity. Split samples found generally good correspondence between Ecology and Boise Cascade samples and analyses. Concentrations of metals in the receiving water sediment were deemed typical to that area and did not exceed applicable guidelines.