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1 COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client: EMCON Associates Date Received 04/07/93 <br /> Project EMCON Project No OG71-029 01 Service Request No SJ93-0472 <br /> 1 ARCO Facility No 2130 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California OHS LUFT Method <br /> Ng/L 1ppbl <br /> 1 <br /> Sample Name MW-1 1741 MW-2 1721 MW-31731 <br /> Date Analyzed 04/14/93 04/14/93 04/14193 <br /> Analyte MRL <br /> Benzene 0 5 250 7 1 3 0 <br /> r� Toluene 0 5 64 <2 5 ' NO <br /> Ethylbenzene 0 5 30 31 NO <br /> Total Xylenes 0 5 76 8 8 2 7 <br /> TPH as Gasoline 50 1,500 1,000 200 <br /> r <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 _ 6i�4t9C 1do-,� _ Date Y t� 3 <br /> I <br /> 2 <br />