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<br />1 of 11 <br /> <br /> <br /> <br /> <br /> <br />Standard Operating Procedure <br />WPCF Operations <br />In-Situ Biosolids Sampling <br />Revised: 09/01/2022 <br /> <br />A. Overview <br />This procedure specifies methods for sampling EWPCF biosolids to meet the requirements outlined <br />in the Washington Administrative Code (WAC) Chapter 173-308, Biosolids Management, as well as <br />the 2019 Biosolids Sampling and Analysis Plan on file with the Department of Ecology (DOE) for <br />removal, land application or other disposal options. Chemical analysis of 40 CFR part 503 <br />regulated metals, vector attraction reduction (VAR), and pathogens provide the basis for <br />establishing Class B biosolids. Nutrient concentrations determine agronomic rates when biosolids <br />are land applied. <br />Some analysis is performed by an outside lab. Confirm with Everett Environmental Laboratory <br />(EEL) Staff which analysis is performed by an outside lab and their availability to receive and <br />analyze the samples. <br />B. Definitions <br />1. AC1 – Aeration Cell 1 (Westernmost aeration cell) <br />2. AC2 – Aeration Cell 2 (Easternmost aeration cell) <br />3. EEL – Everett Environmental Laboratory <br />C. Hazards & Safety Precautions <br />1. A personal floatation device approved for commercial use by the U. S. Coast Guard is required <br />at all times when working on watercraft. <br />2. A minimum of two crew members are required any time a vessel is offshore, as a safety <br />precaution in case one crew member falls overboard and requires immediate assistance. <br />3. The boat deck can become extremely slippery; ensure proper footing as to not fall overboard. <br />4. Do not operate or board the barge or bio boat in freezing conditions. <br />5. Sustained winds over 10 mph affect the maneuverability of the barge and make sample <br />collection difficult. Postpone sample collection, if possible. Sustained winds over 20 mph <br />disable the maneuverability of the barge and make barge operation unsafe. Do not operate the <br />barge with sustained winds over 20 mph. <br />6. The driver of the boat must have a working radio at all times. <br />D. Labor and Equipment <br />1. Staff required: Minimum two (2) plant operators of any level.