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I <br /> 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 Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Vg/L (ppb) <br /> Sample Name MW-4 (74) MW-5 (76) Method Blank <br /> Date Analyzed 02/01/93 01/28/93 01127/93 <br /> Analvie MRL <br /> Benzene 0 5 160 9 2 ND <br /> Toluene 0 5 6 9 1 3 ND <br /> Ethylbenzene 0 5 <5 a ND ND - <br /> Total Xylenes 0 5 71 42 NO <br /> TPH as Gasoline 50 820 79 NO <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> NO None Detected at or above the method reporting limit <br /> ' Raised MRL due to high analyte concentration requiring sample dilution <br /> 0 <br /> Approved by Date- <br />