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2 of 8 <br />D. Labor and Equipment <br />1. Two (2) plant operators of any certification level. <br />2. PPE: Nitrile gloves, personal floatation devices <br />3. Boat, with on-board paddle or pike pole <br />4. Sampling equipment if collecting samples: <br />a. Chain of Custody Form <br />b. Labelled 2-liter high-density polyethylene (HDPE) sample containers. <br />c. Sludge judge (10 feet long) <br />d. Lagoon Monitoring Section Maps <br />5. Lagoon solids blanket and liner monitoring equipment: <br />a. Garmin chartplotter <br />b. Lagoon liner depth measuring tool <br />c. Notepad and pencil <br /> <br />E. In-situ Vector Attraction Reduction (VAR) Sampling Procedure <br />1. Schedule sample collection with Biosolids Manager and Lab and determine the representative <br />sample area. <br />a. VAR samples only need be collected when a dredging project is scheduled. Sample for <br />VAR a maximum of 30 days prior to the start of the dredging project. <br />b. The sample area will be the extent of the expected dredging project. Be sure to <br />document the sampling area clearly on the Chain of Custody and pre-label your sample <br />containers. <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 a minimum of 6 core samples from each of the lagoon monitoring sections that fall <br />within the representative sampling area. Place samples collected within each monitoring area <br />into their own sample container. Make sure to collect a minimum of (6) core samples for the <br />final composite. <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 pierce 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. Drop sample bottles and Chain of Custody off at the lab and notify the Biosolids Manager that <br />sampling is complete. <br />