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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 09/02/93 <br /> Project EMCON Project No OG71-038 01 Service Request No SJ93-1101 <br /> 1 ARCO Facility No 2168 Sample Matrix Water <br /> 1 <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California OHS LUFT Method <br /> p9/L {ppb} <br /> 1 <br /> Sample Name MW-1 1541 MW-2 1532 MW-3 {53) <br /> Date Analyzed 09/14/93 09/14/93 09/14/93 <br /> 1 <br /> Analyte MRL <br /> Benzene 0 5 7,500 3,300 13,000 <br /> Toluene 0 5 700 1,800 2,200 <br /> I Ethylbenzene 0 5 620 260 2,100 <br /> Total Xylenes 0 5 2,300 1,200 4,500 <br /> TPH as Gasoline 50 27,000 18,000 49,000 <br /> Sample Name MW-4 1591 MW-5 155} Method Blank <br /> Date Analyzed 09/14/93 09/14/93 09/14/93 <br /> AnAn—yte MRL <br /> Benzene 0 5 12,000 7,900 NO <br /> Toluene 0 5 21 ,000 6,600 ND <br /> Ethylbenzene 0 5 2,700 990 NO <br /> Total Xylenes 0 5 13 000 4,800 NO <br /> TPH as Gasoline 50 110,000 51 ,000 NO <br /> Approved by "65 Date <br /> 4Q')1Qi.....r,.-,nil Ar � <br />