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<br /> City of Everett, Public Works Department, Water Pollution Control Facility <br /> <br />Page 4 of 13 <br />The WPCF does not operate digestors or a continuous solids dewatering facility. Solids pumped to the <br />Aeration Cells migrate to the unaerated portions of the Lagoon System and are digested as they sit in <br />the anaerobic zone at the bottom of the lagoons. These digested solids are stabilized and become <br />biosolids ready for beneficial use once analyzed per the requirements of Chapter 173-308 WAC. <br />Figure 1 - Aerated Lagoons Flow Diagram <br />