From a day to day perspective, biosolids management at the Everett Water Pollution Control Facility (EWPCF) in northwest Washington is relatively low key. But every two years, it’s an intensive effort that includes a survey and measurement of solids, preparation of bid packages, and oversight of multiple contractors headed out in different directions with the plant’s Class B biosolids cake.“We’ll have one contract for dredging and dewatering, and maybe two or three contracts or professional service agreements for transportation and application,” says Chris Chesson, biosolids specialist with the City of Everett Public Works Department.The process starts four to five months
