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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client. EMCON Associates Date Received: 04/07/93 <br /> 49 Project: EMCON Project No OG71-029 01 Service Request No SJ93-0472 <br /> ARCO Facility No 2130 Sample Matrix* Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Calrforrna DHS LUFT Method <br /> pg/L 1ppbl <br /> 1 <br /> Sample Name MW-4 [74� MW-5 17,61 MW-6 1731 <br /> Date Analyzed 04/14/93 04/15/93 04/15/93 <br /> Analylg MRL <br /> Benzene 05 250 260 0 6 <br /> I� Toluene 05 26 150 ND <br /> Ethylbenzene 05 <2 5 " 12 ND <br /> Total Xylenes 05 120 230 ND <br /> TPH as Gasoline 50 1,000 1,600 160 <br /> 1 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> I ND None Detected at or above the method reporting limit <br /> • Raised MRL due to high analyte concentration requiring sample dilution <br /> I <br /> Approved by L '�,ca-�^�.. Date L/-,,;Z1 `93 <br /> I <br /> 3 <br />