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kn KLEINFELDER <br /> A-2.4 Sample Handling <br /> After labeling, the sample is immediately stored in an iced cooler for transport to Kleinfelder's <br /> office sample control or to the analytical laboratory. A Kleinfelder chain-of-custody form <br /> accompanies the cooler. The chain-of-custody form includes Kleinfelder's name, address and <br /> telephone number, the employee number of the individual who performed the sampling, the <br /> sample numbers, the date and time the samples were collected, the number of containers each <br /> sample occupies, and the analyses for which the samples are being submitted, if any. The <br /> chain-of-custody form is signed by each person who handles the samples, including all <br /> Kleinfelder employees and the receiving employee of office sample control or the analytical <br /> laboratory when the samples are delivered. <br /> A-2.5 Decontamination of Equipment <br /> To reduce the potential for cross-contamination, augers and associated equipment are steam <br /> cleaned prior to drilling each boring. In addition, sampling equipment is cleaned with a <br /> trisodium-phosphate wash and rinsed with distilled water prior to collecting each soil sample. <br /> A-2.6 Soil Cutting Disposal <br /> Drill cuttings will be placed in 55-gallon drums or wrapped in plastic and left on site for <br /> disposal by the site owner. If requested, Kleinfelder can coordinate disposal of soil and water <br /> after analytical results are available. <br /> A-2.7 Soil Boring Closure <br /> Upon completion of drilling and sampling, soil borings will be closed by backfilling the <br /> borings with a cement/bentonite grout. <br />