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<br />Page 1 of 8 <br />Sampling and Analysis Plan (SAP) <br />INDUSTRIAL PRETREATMENT <br />Marshland Soil Nutrients Sampling <br />Revised 7/26/2022 <br />A. Overview <br />Biosolids dredged from Aeration Cell 2 and Recirculation Channel are land applied to the <br />Marshland Site on Lowell-Snohomish River Road owned by the City of Everett. The east and <br />west fields of the Marshland Site are separated by the Marshland Canal (Appendix A). The <br />City collects soil samples from the fields to determine application rates for each field prior <br />to biosolids application and to monitor plant nutrient uptake after crop cutting. Samples are <br />collected below the organic layer and composited for analysis. Minor modifications to the <br />implementation of the SAP will be made to ensure representative samples are collected. <br />Modifications will be documented and submitted to the Biosolids Program Manager (Hanna <br />Lintukorpi as of July 2022). <br />B. Access Requirements <br />An EB-1 key (or 3ECB2 key as of July 2022) or American key is required to access fields. The <br />code for the combination lock is 1083. <br />C. Hazards & Safety Precautions <br />Personal protective equipment (PPE) is required when handling biosolids sampling <br />equipment, such as steel-toed boots and gloves. Rainboots may be required after rain events. <br />Due to wet conditions almost year-round on the fields, only drive and park vehicles in the <br />areas indicated on the map in Appendix A. <br />D. Analytes <br />1. pH (soil) <br />2. Total Kjeldahl Nitrogen (TKN) <br />3. Ammonia <br />4. Nitrate <br />5. Nitrite <br />E. Equipment and Supplies <br />1. Shovel or post-hole digger <br />2. Pickaxe (if necessary for clearing tall grass) <br />3. Stainless steel bowl <br />4. Stainless steel spoon <br />5. Two tall buckets <br />6. Tall marking devices (e.g. traffic cones) (25 sample sites in West Field, 33 in East Field) <br />7. Map of East and West Fields with sample location markers (Appendix A)