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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received: 01/22/93 <br /> Project: EMCON Project No OG71-029 01 Service Request No . SJ93-0096 <br /> ARCO Facility No. 2130 Sample Matnx- Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS !_LIFT Method <br /> kg1L (ppb) <br /> Sample Name MW-1 {74i MW-2 (72) MW-3 173) <br /> Date Analyzed 02101/93 01128/93 01127/93 ' <br /> Analyle MRL <br /> Benzene 0 5 260 41 65 <br /> Toluene 0 5 100 <2 5 " 0 7 <br /> Ethylbenzene 0 5 10 24 ND <br /> Total Xylenes 0 5 34 6 4 4 5 <br /> TPH as Gasoline 50 1,800 1,400 420 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> NO None Detected at or above the method reporting limit <br /> • This sample was part of the analytical batch started on January 27, 1993 However, it was <br /> analyzed after midnight so the actual date analyzed is January 28, 1993 <br /> " Raised MRL due to high analyte concentration requiring sample dilution <br /> Approved by Date �� <br />