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APR-05-04 MON 1229 PM IWELL NELSON SCHRIMP FAX N0, 2CW6-9320 P. 11 1:/05/200711:10 MI 200 0�10W 21 WJV14 KLEINFELOFR sampling depth where g7oundwater is encountered. A stainless steel drive tip equipped with a stainlsa steel filter is lowered into tha boring at fire end of a2.5-inch diameter galvanized steel pipc and pushed usiag the drill rig approximately G to 12 incbus iuto the suil/aquifer formation at The bottom of the botiry. A steriliz4 glass, vacuurn scaled sampling arnpuule(tube), similar to a standard volatile organics (VOA)inial, is then lowered through the pipe down to the tip with a cable. Between the 'Ip and the sample tuba is a double-sided hypodi retic needla (syringe), which siniultarcourly punctures the saals on L%e stautless steel drive tip and the septum of the glass sample ampoule, The vacuum in the sample ampoule drays groundwater through the tip into the glass ampoule_ The glass ampoule is then pulled out of the pipe, dismgagin-m the syziuge Thu septum in he glass an-rpouie and drive tip reseals after the syrirge is removed, To reduce tic potential for intmducing co'ntan3iunals into the samples, the drive tip, galvanized pipe, and other cgnipmant used for sample collection are ptcam cleaned and/or washed with Insodium phosphate or non-phosphale d.ncr;cnr solution and double rinsed with disliucul water prior to use. The sample probe and filters aro cleaned in TSP solution and rinsed with methyl alcohol followed.by a distilled water rinse prior to use. Now, factory-Acrilized syringe needles, 0•rings,septums and sample tubes are usod for each sample, B-1,6 Samplablandlinq After labeling, flee sample is immiediately stored in an iced cooler for transport to Kleinfalder's officu sample control or In'the analytical laboratory. A Kleinfelder chain-of-custody form accompanies the cooler. The elinin-of-custody form includes Kleinfelder's name, address and telephoto number, tLc employee nurnber of the individual who perfonned the sampling, the sample numbers, the date and time the samples were collected, the number of containers each santplo oecapics, the sample matrix (soil or water) and the analyses for which the samples are beiu; submitted, if any. The chain-of-custody form is signed by each person who heutdlcs the samples, including all Kleinfalder employees and the rceciving employes of office sample control or the analytical laboratory when the samples are delivered. B-2.7 Deco5ltauurtatiuu of Equipment To r.dace the potoatiai for ecoss-contarriratien, auger and m ociatod equilrmwrt arc steam cleaned prior tc drill'=s each boring. to additier., samplinh equipment is cican,rd wide a trisodium phosphate or nonphosohate detergent wash and rimed with distilled :Vater prioi to colleen=e each soil sample. a2ii0l?1tGP�o,v�sTn i?4-,3 DcCrrbr 5,301.12 F,4='li pt r