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COLUMBIA ANALYTICAL SERVICES, INC <br /> r <br /> Analytical Report <br /> ' Client EMCON Associates Date Received 03/12/93 <br /> Project. EMCON Project No OG71-038 01 Service Request No SJ93-0368 <br /> ARCO Facility No 2168 Sample Matrix Water <br /> STEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br />! ug1L (Ppb) <br /> i <br /> Sample Name MW-4159) MW-5 (55) Method Blank <br /> Date Analyzed 03/22/93 * 03/19/93 03/19193 <br /> . Analyte MRL <br /> Benzene 0 5 14,000 9,200 ND <br /> Toluene 0 5 24,000 6,600 ND <br /> Ethylbenzene 0 5 3,200 830 ND <br /> Total Xylenes 0 5 15,000 4,200 ND <br /> TPH as Gasoline 50 110,000 49,000 ND <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 March 22, 1993 However, it was <br /> analyzed after midnight so the actual date analyzed is March 23, 1993 <br /> Approved b ,�j <br /> Y Date ' (atCA C-! <br />