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t <br /> I <br /> E � <br /> 14ON <br /> r., <br /> Coca-Cola Enterprises - West <br /> USTEC Job No. 90054.03 <br /> , a <br /> 3.0 GROUNDWATER SAMPLING PROCEDURES <br /> 3 ' The six groundwater monitoring wells were sampled by USTEC personnel on August 22, 1991. <br /> To minimize the risk of cross-contamination during the sampling program,work proceeded from <br /> f ' the wells with the least contamination, as noted in the previous quarterly monitoring,to wells <br /> with increasingly contaminated water. <br /> Each monitoring well was purged of at least three well volumes of water using a <br /> decontaminated Gnmdfos®purge pump. The pH,specific conductivity,and temperature were <br /> monitored for each well during the purging process. All water from the purging process was <br /> contained in Department of Transportation approved(DOT) 17H,55-gallon steel drums. These <br /> drums were temporarily stored on-site pending completion of the analytical test results. Upon <br /> receipt of these results,the water from these drums was transported to Gibson Oil and Refining, <br /> Inc.of Redwood City,California for disposal. The transportation manifest for the purged water <br /> —`� is presented in Appendix A. <br /> The groundwater samples were collected using a decontaminated 2-inch nominal diameter <br /> M>� Teflon®bailer. Groundwater was discharged directly from the bailer into three 40-milliliter(m!) <br /> VOA glass vials with Teflon septum caps, into one 1-liter amber glass bottle and one 500 ml <br /> plastic bottle. The VOA vials were filled,capped,and inverted to check for possible air bubbles. <br /> If air bubbles were present, the vials were refilled and checked again. This procedure was <br /> repeated until an acceptable sample was obtained. The 1-liter and 500 ml containers were filled <br /> until very little head space remained in the bottle. A duplicate sample was collected from <br /> monitor well MW-3 and labeled MW-7. An equipment blank was also collected by pouring <br /> distilled water through the Teflon®bailer after the final rinse_ The water was discharged directly <br /> �{ into three 40-m1 VOA sample containers. <br /> rJ <br /> All groundwater samples were labeled, wrapped in a protective wrap, placed in a resealable <br /> plastic bag, placed on ice, and maintained at about 4° Centigrade to minimize potential <br /> Chain-of-custody documentation was maintained by <br /> volatilization of the organic compounds. <br /> 3 <br /> i <br /> i <br /> s <br />