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• h'q KLEINFELDER Each sample is individually labeled. The label includes Kleinfe der's name, job number, the date and time the sample was collected, the employee num er of the individual who performed the sampling, and a unique five-digit sample identific tion number. A custody seal may be placed on the sample in such a way that any attempt tamper with the sample is easily visible. A-2.4 Sample Handling After labeling, the sample is immediately stored in an iced cooler for transport to Kleinfelder's office sample control or to the analytical laboratory A Kleinfelder chain-of- custody form accompanies the cooler. The chain-of-custody fo m includes Kleinfelder's name, address and telephone number, the employee numbe of the individual who performed the sampling, the sample numbers, the date and time the samples were collected, the number of containers each sample occupies, and the analyses for which the samples are being submitted, if any. The chain-of-custody form is signed by each person who handles the samples, including all Kleinfelder employees an I the receiving employee of office sample control or the analytical laboratory when the samples are delivered. A-2.5 Decontamination of Equipment To reduce the potential for cross-contamination, augers and sociated equipment are steam cleaned prior to drilling each boring. In addition, sampling equipment is cleaned with a trisodium-phosphate wash and rinsed with distilled water pi ior to collecting each soil sample. A-2.6 Soil Cutting Disposal Drill cuttings will be placed in 55-gallon drums or wrapped in p astic and left on site for disposal by the site owner. If requested, Kleinfelder can coordinate disposal of soil and water after analytical results are available. A-2.7 Soil Boring Closure Upon completion of drilling and sampling, soil borings will be closed by backfilling the borings with a cement/bentonite grout.