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h� K L F I N F E L D E R into the glass ampoule The glass ampoule is then pulled out of the pipe, disengaging the syringe The septum in the glass ampoule and drive tip reseals after the syringe is removed rTo reduce the potential for introducing contaminants into the samples, the drive tip, galvanized pipe, and other equipment used foi sample collection are steam cleaned and/or washed with trisodium phosphate or non-phosphate detei gent solution and double rinsed with distilled water prior to use The sample probe and filters are cleaned in TSP solution and rinsed with methyl alcohol followed by a distilled watei rinse prior to use New, factory-sterilized syringe needles, 0-rings, septums and sample tubes aie used foi each sample B-2.6 Sample Handling ' After labeling, sample, the is immediately stoied in an iced cooler for transport to Kleinfelder's p Y office sample control or to the analytical laboratory A Kleinfelder chain-of-custody form accompanies the cooler The chain-ot-custody form includes Kleinfelder's name, address and telephone number, the employee number 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, the sample inatiia (soil or water) and the analyses for which the samples are being submitted, if any The chain-ot-custody fonri is signed by each person who handles the ' samples, including all Kleinfeldei employees and the receiving employee of office sample control or the analytical laboratory when the samples are delivered B-2.7 Decontamination of Equipment To reduce the potential for cioss-contamination, augeis and associated equipment are steam ' cleaned prior to dialling each boinig, In addition, sampling equipment is cleaned with a trisodium phosphate of non-phosphate deteigent wash and rinsed with distilled water prior to collecting each soil sample B-2 8 Soil Boring Closure and Cutting Disposal Soil borings are closed immediately atter the collection and logging of soil samples Closure is accomplished by 01OUting the boi ing with a cement/bentonite sluiry or as otherwise required ' Drill cuttings will be placed in 55--allon diums wrapped in plastic or spread around the boring and left on site foi disposal by the site owner If tequested, Kleinfelder can coordinate disposal of soil and watci altei analytical results are available • 20-1108-24 r-01/20198120 Page B-3 01999,KleintL1&r Ing. February 5, 1999