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k'g KLEINFELDER <br /> 12 inches into the soil/aquifer formation at the bottom of the boring. A sterilized, glass, <br /> vacuum sealed sampling ampoule (tube), similar to a standard volatile organics (VOA) <br /> vial, is then lowered through the pipe down to the tip with a cable. Between the tip and <br /> the sample tube is a double-sided hypodermic needle (syringe), which simultaneously <br /> punctures the seals on the stainless steel drive tip and the septum of the glass sample <br /> ampoule. The vacuum in the sample ampoule draws groundwater through the tip into <br /> the glass ampoule. The glass ampoule is then pulled out of the pipe, disengaging the <br /> syringe. The septum in the glass ampoule and drive tip reseals after the syringe is <br /> removed. <br /> To reduce the potential for introducing contaminants into the samples, the drive tip, <br /> galvanized pipe, and other equipment used for sample collection are steam cleaned <br /> and/or washed with trisodium phosphate or non-phosphate detergent solution and <br /> double rinsed with distilled water prior to use. The sample probe and filters are cleaned <br /> in TSP solution and rinsed with methyl alcohol followed by a distilled water rinse prior to <br /> use. New, factory-sterilized syringe needles, O-rings, septum's and sample tubes are <br /> used for each sample. <br /> A-2.7 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-of- <br /> custody form accompanies the cooler. The chain-of-custody form includes Kleinfelder's <br /> name, address and telephone number, the employee number of the individual who <br /> performed the sampling, the sample numbers, the date and time the samples were <br /> collected, the number of containers each sample occupies, the sample matrix (soil or <br /> water) and the analyses for which the samples are being submitted, if any. The chain- <br /> 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 <br /> analytical laboratory when the samples are delivered. <br /> A-2.8 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 /> A-2.8.1 Geoprobe Decontamination <br /> I To reduce the potential for cross-contamination, Geoprobe pipe and associated <br /> equipment are steam cleaned prior to advancing each boring. In addition, sampling <br /> equipment is cleaned with a trisodium-phosphate wash and rinsed with distilled water <br /> prior to collecting each soil sample. <br /> Groundwater samples will be collected with a decontaminated stainless steel bailer. <br /> 65078.T2/ST06R506/FB:ly Page <br /> ©2006 Kleinfelder, Inc. May 22,2000606 <br />