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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 08/06/93 <br /> Project EMCON Project No OG71-019 01 Service Request No SJ93-0977 <br /> ARCO Facility No 2133 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> ug/L (ppb) <br /> Sample Name E_4 {211 E_5 (19) E-6 {181 <br /> Date Analyzed 08/16/93 08/17/93 08/16/93 <br /> Analyte MRL <br /> Benzene 0 5 900 4,700 2,500 <br /> Toluene 0 5 <20 ' <50 57 <br /> Ethylbenzene 0 5 160 560 1,100 <br /> Total Xylenes 0 5 240 560 1,000 <br /> TPH as Gasoline 50 9,400 26,000 16,000 <br /> Sample Name E_7 (181 E-8 (23) E-9 (18) <br /> Date Analyzed 08/17/93 08/16/93 08/16/93 <br /> Analyte MRL <br /> Benzene 0 5 <5 *• 12 370 <br /> Toluene 0 5 <3 ND 22 <br /> Ethylbenzene 0 5 2 9 2 3 220 <br /> Total Xylenes 0 5 0 9 1 6 460 <br /> TPH as Gasoline 50 360 320 16,000 <br /> Rased MRL due to high analyte concentration requiring sample dilution <br /> r w Raised MRL due to matrix interference <br /> l <br /> Approved by ��' Date <br /> _ 4 _ _ _ <br />