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5 <br /> bottles will be filled directly from the discharge line of the <br /> bladder pump or from the bailer, and will be filled to the brim. A <br /> Teflon-lined cap (septa) will be placed on the bottles, and the <br /> volatile organic analysis (VOA) bottles will be checked to determine <br /> that no air bubbles remain within. <br /> 4s- All water samples will be labeled and stored as described in the <br /> S soil samples section above, and transported to the Eureka laboratory <br /> in Sacramento within 48 hours. <br /> `a; Soil Boreholes <br /> r ; <br /> Soil boreholes will ,:be grouted with bentonite cement slurry or. >: �•H• <br /> '+ <br /> riea�c'"cement ''f rn�j.thebottom ',o€ the. borehole.�'to g round surface.-. <br /> rcaf°= <br /> Decontamination Procedures <br /> To prevent cross-contamination, sail sampling equipment_ and all <br /> pumps, bailers, and their related tubing will be washed with <br /> laboratci rade detergent, rinsed with tap. water , and rinsed with <br /> y�g g <br /> , .sr. deionized water before sampling and development. Downhole drilling <br /> equipment and the development pump will be steam cleaned before and 5 <br /> between use at each borehole. <br />• ;,�,„ Quality Assurance_ plan <br /> The procedures to be followed in sample collection, identifica- <br /> t'k tion, and handling at the ARCO site are described below. The <br /> analytical quality assurance program is also discussed. <br /> r�. <br /> Sample Collection. and HandlinS <br /> cs� d <br /> ^roller collection and handling are essential to ensure the' ,' . , <br /> IAF quality ,of the sample. All samples will be collected by experienced ' <br /> 4 : field personnel. The samples will be collected in suitable <br /> ;mak containers which have beenprecleaned at the laboratory. The <br /> containers will .be clearly marked and dated for identification. All <br /> samples will be cooled and .stored for analysis no longer than the <br /> s ,R <br /> maximum allowable holding time. <br /> Sample Identification and Chain-o€-Custody Procedures <br /> Y- <br /> X4 _ Sample identification and chain-of-custody . procedures ensure <br /> sample integrity and document sample possession from the. time of <br /> collection to its ultimate disposal. Each sample container submitted <br /> for analysis: will,,-have a label affixed to: identify the .job number , <br /> date—and--time—of---samplecollection, -and—a—sample--number---- <br /> unique to. that. sample. ' This information, in 'addition to a descrip- <br /> tion of the sa.nple, field measurements made, sampling methodology, <br /> ., tet names of ori-site personnel,, and. any other pertinent field observa_. <br /> tions, will be recorded on the boring log or in the field records. <br /> A <br /> • <br />