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File No. 20-3978-O1.PO2 KLEINFELDER <br /> November 12, 1996 <br /> B-2.6 Sample Handling <br /> After labeling, the sample is immediately stored in an iced cooler for transport to <br /> Kleinfelder's office sample control or to the analytical laboratory. A Kleinfelder chain- <br /> of-custody form accompanies the cooler. The chain-of-custody form includes <br /> Kleinfelder's name, address and telephone number, the employee number of the <br /> individual who performed the sampling, the sample numbers, the date and time the <br /> samples were collected, the number of containers each sample occupies, the sample <br /> matrix (soil or water) and the analyses for which the samples are being submitted, if any. <br /> The chain-of-custody form is signed by each person who handles the samples, including <br /> all Kleinfelder employees and the receiving employee of office sample control or the <br /> analytical laboratory when the samples are delivered. <br /> B-2.7 Decontamination of Equipment <br /> To reduce the potential for cross-contamination, augers and associated equipment are <br /> steam cleaned prior to drilling each boring. In addition, sampling equipment is cleaned <br /> with a trisodium phosphate or non-phosphate detergent wash and rinsed with distilled <br /> water prior to collecting each soil sample. <br /> B-2.8 Soil Boring Closure and Cutting Disposal <br /> Soil borings are closed immediately after the collection and logging of soil samples. <br /> Closure is accomplished by grouting the boring with a cement/bentonite slurry or as <br /> otherwise required. <br /> Drill cuttings will be placed in 55-gallon drums wrapped in plastic or spread around the <br /> boring and left on site for disposal by the site owner. If requested, Kleinfelder can <br /> coordinate disposal of soil and water after analytical results are available. <br /> 20-3978-O1.P021AIP960132/WR960nl5 Page 8-3 01996, Kleinfelder, Inc. <br />