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1 <br /> COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> I 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 Matrix Water <br /> I <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Ng/L 1ppbl <br /> Sample Name MW-1 (74) MW2 (72) MW-3 (73) <br /> Date Analyzed 02/01/93 01/28/93 01/27/93 " <br /> Analyte MRL <br /> Benzene 0 5 260 41 6 5 <br /> Toluene 0 5 100 X 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 /> ND 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 />