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Ryegrass Limited Purpose Landfill and Balefill Closed Landfill <br />Groundwater and Leachate Sampling and Analysis Plan <br />Knutas County Solid Waste <br />The depth -to -water will be recorded to the nearest hundredth of a foot (0.01 Font). Water levels will be <br />measured before, during, and after purging to assess drawdown effects at each well. To alleviate <br />potential errors, previous water level data will be used for comparison during field activities. Water <br />levels are preferably measured before purging well and as close in time as possible to minimize <br />interference from drawdown or barometric pressure effects. <br />2.2.2 Investigative Derived Waste <br />Purge water from the wells will be collected and discharged to ground. Solid waste (e.g., disposable <br />tubing, gloves, etc.) will he disposed of as ordinary municipal waste. <br />2.3 Sample Preservation, Storage, and Delivery <br />2.3.1 Sample Preservation <br />After collection, all samples will be labeled, chilled in a cooler to between 2 and 6 degrees Celsius <br />(IC) and submitted to the testing laboratory for analysis, Sample Containers, Preparation, <br />Preservatives, and Holding Times for Water Samples are shown in Table 4. Full chain -of -custody and <br />field documentation procedures will be employed, as described in Section 3.5. <br />The sample containers (including preservative, if required) will be prepared and provided by the <br />analytical laboratory. Samples will be preserved consistent with analytical laboratory <br />recommendations. After each bottle is filled and capped, the sample container will be inverted to <br />ensure complete mixing of the sample with the preservative. The sample container will not be <br />shaken. <br />2.3.2 'Temperature Control <br />The sample container and samples will be cooled to between 4 and 6°C, from the time the sample Is <br />collected through analysis, Samples will be maintained in temperature -regulated refrigerators, in <br />coolers, or in sample coolers containing double -bagged or commercially frozen icepacks. The <br />icepacks will be frozen solid before use. <br />2.3.3 Sample Packing and Storage <br />Before the sample bottles are packed into the shipment coolers, the sample designations will be <br />recorded in the appropriate spaces on the Chain -of -Custody form. After the samples are collected <br />and the preservatives are added (when applicable), the bottles will be capped and placed in the <br />sample cooler. The frozen icepacks will be placed into the sample cooler such that they are not in <br />direct contact with the sample bottles. Glass containers should not be packed in contact with each <br />other, Bottle holders, cushions, or bubble wrap will be used for glass bottles to protect them from <br />breakage. <br />Bottles will be wiped clean with paper towels before placement in the ;sample cooler. The sample cooler <br />must be kept as clean as possible to minimize the potential for cross -contamination. Bottle caps will be <br />checked to ensure they are tight and will not become loose when inserted in the cooler. Bottle caps will <br />not be taped. <br />The Chain -of -Custody form will be placed in a plastic bag, sealed, and placed inside the sample cooler <br />or taped to the inside lid of the cooler. A copy of the Chain -of -Custody form will be retained for <br />verification. <br />April 2024 1553-1763-010 2.3 <br />Revised May 2024 <br />