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3 of 8 <br />F. In-situ Metals Monitoring Sampling Procedure <br />1. Schedule sample collection with Biosolids Manager and Lab and determine representative <br />sample areas. <br />a. In-situ metals samples are monitored only for internal purposes. The sampling schedule and <br />areas may change as determined by the Biosolids Manager. <br />b. Several lagoons may be scheduled for in-situ metals monitoring at once – if no fecal <br />coliform analysis is requested then lab constraints are minimal. <br />2. Place the boat on the water and collect your supplies. Note that using the telehandler to place <br />the boat should be done by an employee trained in rigging. <br />3. Collect two to four core samples within each representative sampling area into individual pre- <br />labeled bottles. Make sure core samples are taken at semi-random locations within each area. <br />a. With both ball valves in the open position, slowly lower the sludge judge to the bottom of <br />the pond. Take a core sample through the solids to the bottom of the pond, taking care not <br />to jam the sludge sampler into the clay pond-liner. <br />b. Close the top ball valve with the sludge sampler gently resting on the pond bottom. <br />c. Withdraw the sludge sampler from the lagoon. When the lower ball valve is accessible, <br />close the lower ball valve, then open the top ball valve. Note: If any indication of clay is <br />present, discard the sample and re-sample. <br />d. With the tip of the sludge sampler in a pre-labelled HDPE sample container, slowly open the <br />lower ball valve. Allow the sludge to transfer into the sample container. Remove the tip of <br />the core-sampler from the sample container as the supernatant reaches the bottom of the <br />sampler. <br />e. Eject any supernatant back into the pond. Avoid including any supernatant in the sample <br />container. <br />4. Stow the boat and equipment. <br />5. Drop samples and Chain of Custody off at the lab. Notify Biosolids Manager that sampling is <br />complete. <br /> <br />G. Lagoon Solids Blanket and Liner Data Collection Procedure <br />1. Schedule monitoring event with Biosolids Manager <br />a. Solids blanket data is used in the calculation of available solids prior to a dredging event and <br />again to monitor changes to the solids blanket after a dredging event. <br />b. Liner monitoring should follow immediately after a dredging event to check for damage or <br />changes to the lagoon liner. <br />2. Schedule monitoring event with Biosolids Manager <br />3. Place the boat on the water and collect your supplies. Note that using the telehandler to place <br />the boat should be done by an employee trained in rigging. <br />4. Prepare the Garmin chartplotter.