Biosolids ingredient in soil amendment

The Tacoma Sewer Utility Operations Division (TSUOD) has had a great deal of success marketing Tagro Mix, made from dewatered biosolids, sand and sawdust. In 1997, the wastewater treatment plant generated 4,238 dry tons of biosolids; more than half (2,285 dry tons) went toward Tagro Mix and Liquid Tagro production. The remaining biosolids were applied to agricultural and forest land. Obtaining the permit for application to 152,000 acres of private forestland was critical because it allowed TSUOD to recycle biosolids all year …