Laserfiche WebLink
J <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 /> All water samples will be labeled and stored as described in the <br /> soil samples section above, and transported to the Eureka laboratory <br /> in Sacramento within 96 hours. <br /> Soil Boreholes <br /> Soil boreholes will be grouted with bentonite-cement slurry or <br /> neat cement from the bottom of the borehole to ground surface. <br /> Decontamination Procedures <br /> To prevent cross--contamination, soil sampling equipment and all <br /> pumps, bailers, and their related tubing will be washed with <br /> laboratory-grade detergent, rinsed with tap water, and rinsed with <br /> deionized water before sampling and development. Downhole drilling <br /> equipment and the development pump will be steam-cleaned before and <br /> -w between use at each borehole. <br /> F <br /> t <br /> Quality Assurance Plan <br /> i <br /> The p,.)cedures to be f.,llowed in sample collection, identifica- <br /> tion, and handling at the ,ARCO site are described below. The <br /> analytical quality assurance program is also discussed. <br /> Sam le Collection and Handling <br /> .� Proper collection and handling are essential to ensure the <br /> quality of the sample. All samples will be collected by experienced <br /> field personnel. The samples will be collected .in <br /> suitable-containers which have been precleaned 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 /> maximum allowable holdina time. <br /> Sample identification and Chain-of-Custody Procedures <br /> 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 /> sampler, date and time of sample collection, and a sample number <br /> unique to that sample. This information, in addition to a descrip- <br /> tion of -the sample, field measurements rade, sampling methodology, <br /> names ofon-site__.-.per.sonnet,___and.._any-_..othe r.-..._pert inent---.field--observa ------------------ <br /> ? tions, will be recorded on the boring log or in the field records.. <br /> i " <br /> i <br />