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' SIERRA ANALYTICAL <br /> IT/Emcon ELAP No.: 2320 <br /> 1433 North Market Blvd. Date Sampled: 12/19/99 <br /> Sacramento, CA 95834 Date Received: 12/21/99 <br /> Date Prepared: 12/22/99 <br /> ' Date Analyzed: 12/22/99 <br /> Sierra Project No.: 9912-323 Analyst: WCH <br /> Client Project ID: USA Station 965, Lodi, CA / IT# 792065 /20A41-008.001 <br /> Sample Matrix: Water Report Date: 12/28/99 <br /> Oxygenated Fuel Additives (GC/MS) <br /> ' Preparation Method: Purge&Trap Concentrator(EPA Method 5030) <br /> Analysis Method: EPA Method 8260B <br /> Client Sample No.: MW-6 MW-7 MW-8 S-1 S-2 <br /> Practical <br /> Quantitation Units <br /> Limit <br /> Sierra Sample No.: 13119 13120 13121 13122 13123 <br /> ' Analytes: <br /> ' MTBE ND 2.5 220 10000 1900 0.5 µg/L <br /> D1pE ND ND ND ND ND 5.0 µg/L <br /> • Ethanol ND ND ND ND ND 50 }'&/L <br /> ETBE ND ND ND ND ND 5.0 µg/L <br /> TAME ND ND ND ND ND 5.0 µg/L <br /> ' TBA ND ND 5.7 1300 ND 5.0 µg/L <br /> Dilution Factor 1 I 1 100 10 QC Limits - <br /> ' Surrogate Recovery: <br /> Dibromot7uoromethane 117 113 114 116 116 80-120 <br /> Toluene-M 93 91 94 97 97 81-117 % <br /> 4-Bromofluorobenzene 1 92 1 96 1 92 1 94 1 94 1 74-121 <br /> 1 Quality Assurance/Quality Control Data <br /> 1QC Reference No.: 991222-BL <br /> ' <br /> Analytes: Spike Spike Dup. Spike RPD RPD <br /> % Rec. QC Limits % Rec. % Rec. QC Limits QC Limits <br /> MTBE T5---90-- 120 1 2 97 37- I 23 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Practical Quantitation Limit(PQL)x Dilution Factor <br /> 1 <br /> 1 <br />