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<br /> City of Everett, Public Works Department, Water Pollution Control Facility <br /> <br />Biosolids Sampling & Analysis Plan <br /> <br /> <br />Table of Contents <br />1. Introduction .......................................................................................................................................... 1 <br />a. Lagoon Treatment Overview ............................................................................................................ 1 <br />Figure 1 - Aerated Lagoon (AC 1 and 2) ................................................................................................ 2 <br />b. Solids Management at the WPCF ..................................................................................................... 3 <br />Table 1 - Allowable Biosolids Pollutants and Loading Rates (Derived from Biosolids Pollutant Limit <br />Regulations) .......................................................................................................................................... 3 <br />c. Biosolids Pond Sampling Overview ................................................................................................... 4 <br />Table 2 – Schedule of Biosolids and Pond Sampling ............................................................................. 5 <br />2. Biosolids Sampling Analysis & Laboratory ............................................................................................ 6 <br />3. Biosolids Sampling Procedure ............................................................................................................... 7 <br />a. Sampling in situ biosolids for metals, VAR, and Pathogens .............................................................. 7 <br />b. Sampling dewatered biosolids for fecal coliforms and nutrients ..................................................... 7 <br />4. Soil Sampling and Agronomic Rates ...................................................................................................... 7 <br />a. Marshland Soil Sampling ................................................................................................................... 8 <br />b. Biosolids Nutrient Sampling ............................................................................................................ 10 <br />5. Data Analysis Review .......................................................................................................................... 10 <br />6. Everett Biosolids Management Staff .................................................................................................. 10 <br />Appendix A – Process Schematic ........................................................................................................ 11 <br />Appendix B – Process Schematic with Sampling Locations and Types ............................................... 12 <br />Appendix C – Aeration Cell 2 Sample Site Map .................................................................................. 13 <br />Appendix D – Oxidation Pond Site Map .............................................................................................. 14 <br />Appendix E – Analysis Methods, Preservation and Holding Times ..................................................... 15 <br />Appendix F – Hydrographic Survey for EWPCF, December 2018 ....................................................... 16 <br /> <br /> <br /> <br /> <br /> <br />