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COLUMBIA ANALY7CAL SERVICES, INC. <br /> =nal,.- -,il Report <br /> Client- EMCON Associates Date Received: 12%22/93 <br /> Project: EMCON Project No. OG71 -033.01 Service Request No.: SJ93-1565 <br /> ARCO Facility No. 548 Sample Matrix: Water <br /> BTEX ana as Gasoline <br /> EPA Methods 5030:3020 Zalifornia DNS LUFT Method <br /> Lig (ppb) <br /> Sample Name: MW-1 1561 MW-2 (61) MW-3 (62) <br /> Date Analyzed: 12127/93 12/27/93 12/27/93 <br /> Analyte MRL <br /> Benzene 0.5 1 .3 2.9 ND <br /> Toluene 0.5 0.7 ND ND <br /> Ethylbenzene 0.5 0.6 ND ND <br /> Total Xylenes 0.5 1 .5 ND ND <br /> TPH as Gasoline 50 110. ND 140 ` <br /> Sample Name: MW-4 1631 MW-5 (60) MW-6 <br /> Date Analyzed: 12/27/93 12/27193 12/27193 -- <br /> Analyte <br /> Analyte MRL <br /> Benzene 0.5 ND 34. ND <br /> Toluene 0.5 ND 1 .4 ND <br /> Ethylbenzene 0.5 ND 39. ND <br /> Total Xylenes 0.5 ND 41 . ND <br /> TPH as Gasoline 50 ND 820, ND <br /> The sample contains a single non-fuel comc_nent eluting in the gasoline range, and quantitated as <br /> gasoline. The chromatogram does not mate: ,he typical gasoline fingerprint. <br /> .. "' This sample was part of the analytical batch s- rted on December 27, 1993. However, it was analyzed <br /> after midnight so the actual date analvzed is -ecember 28, 1993. <br />. Approved by: Date: <br />