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COLUMBIA ANALYTICAL SERVICES. INC. <br /> . Analytical Report <br /> Client EMCON Associates Date Received. 01/22193 <br /> Project EMCON Protect 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 /> Pg/L (ppb) <br /> Sample Name MW-4 (74) MW-5 „x,76) Method Blank <br /> Date Analyzed 02101/93 01/28/93 01127/93 <br /> Analyle MRL <br /> Benzene 05 160 92 ND <br /> Toluene 05 69 1 3 ND <br /> Ethyl benzene 05 <5 NO ND <br /> Total Xylenes 0 5 71 4 2 NO <br /> TPH as Gasoline 50 820 79 NO <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Umit <br /> NO None Detected at or above the method reporting limit <br /> Raised MRL due to high analyte concentration requiring sample dilution <br /> Approved by: Date: 3��/�-� <br />