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k <br /> November 1990 -G'4- <br /> M88168D <br /> which were preserved with sodium oxide or sodium hydrogen sulfate and were used <br /> for analyses for organic contaminants. <br /> e <br /> Once the sample was transferred to the 40-m1 VOA vials and the 1- <br /> E <br /> lifer amber bottle, the containers were sealed without headspace with Teflon- <br /> lined screw caps, labeled, taped shut, secured in guard bottles, and artificially <br /> coaled for preservation. Chain-of-custody and sample preservation documentation <br /> accompanied the ground water samples from collection to delivery to the <br /> { laborarory. Unused bailing rope (nylon) was used to retrieve the sample from the <br /> M <br /> onitoring well. <br /> LABORATORY ANALYSES <br /> The soil samples were analyzed for fuel constituents using EPA method ' <br /> 8240, modified for diesel fuel for TPH and BTEX. The detection limits for BTEX, <br /> EDC, and EDB are below DOHS applied action levels for drinking water. <br /> E <br /> The ground water sample was analyzed for TPH and BTEX using E <br /> i PAt <br /> method 524.2; modified for diesel fuel. Again, all detection limits were below <br /> the ,applicable regulatory standards for drinking water. _ <br />` Additionally all soil and ground water samples were analyzed for ! i <br /> s - <br /> total lead using EPA methods 7420 (soil) and 7421 (water): <br /> The analytical laboratory used during this assessment was CCAS. CCAS. <br /> is DOHS-certified for all analyses performed and is located in Gole%a, <br /> $ ` California. Quality assurance/quality control data were provided by CCAS and are <br /> t ; included in Appendix B. <br /> fY <br />'R, <br /> z - - --'- -- ----- - -- - - -- -- - - - - ---- - ------- -- -- -- - --- - <br /> c z <br /> /4 L"n•S.0 'Y=.._v.i'd..r'rry:Krti.# v_::'F.. -..-.--.2.. r:. e..,e...w.- _ A F <br /> rr <br />