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SIERRA ANALYTICAL <br /> IT/Elmeon ELAP No.: 2320 <br /> 1433 North Market Blvd. Date Sampled: 03/31/00 <br /> Sacramento, CA 95834 Date Received: 04/04/00 <br /> Date Prepared: 04/05/00 <br /> Date Analyzed: 04/05/00 <br /> Sierra Project No.: 0004-043 Analyst: WCH <br /> 1 Client Project ID: USA Gasoline Station#65, Lodi, CA IT # 792065 /20A41-008.001 <br /> Sample Matrix: Water Report Date: 04/10/00 <br /> ' Oxygenated Fuel Additives(GC/MS) <br /> Preparation Method: Purge&Trap Concentrator(EPA Method 5030) <br /> Analysis Method: EPA Method 82608 <br /> Client Sample No.: MW-1 MW-2 MW-3 MW-4 MW-5 <br /> Practical <br /> Quantitation Units <br /> Limit <br /> ' Sierra Sample No.: 8030 8031 8032 8033 8034 <br /> Analytes: <br /> ' MTBE ND ND 25 8.6 ND 0.5 gg/L <br /> DIPS ND ND ND ND ND 5.0 gg/L <br /> Ethanol ND ND ND ND ND 50 µg/L <br /> ETBE ND ND ND ND ND 5.0 µg/L <br /> TAME ND ND ND ND ND 5.0 gg/L <br /> TBA ND ND ND ND ND 5.0 pg/L <br /> Dilution Factor l I 1 I 1 QC Limits <br /> Surrogate Recovery: <br /> Dibromotluoromethane lot 99 103 102 100 80-120 <br /> Toluene-d8 107 106 107 109 105 81-117 % <br /> 4-Bromofluorobenzene 1 98 1 95 1 98 107 1 98 74-121 <br /> Quality Assurance 1 Quality Control Data <br /> QC Reference No.: 000405-BL <br /> ' Analytes: o o pt a pt a up. pt a RPD <br /> /o RRPD <br /> ec. C Limits /o Rec. /o Rec. QC Limits QC Limits <br /> MTBE 84 80- 120 82 87 7 - 160 5.3 0 -30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Practical Quantitation Limit(PQL)x Dilution Factor <br /> i <br /> 1 <br /> • <br /> 1 - <br /> 1 <br />