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' SIERRA ANALnCAL <br /> GHH Engineering, Inc. ELAP No.: 2320 <br /> 8084 Old Auburn Road, Suite E Date Sampled: 07/11/00 <br />' Citrus Heights, CA 95610 Date Received: 07/13/00 <br /> Date Prepared: 07/21/00 <br /> Date Analyzed: 07/21/00 <br /> Sierra Protect No.: 0007-227 Analyst: SM <br />' Client Project ID: USA-Stockton 15007 10 <br /> Sample Matrix: Water Report Date: 07/26/00 <br />' Oxygenated Fuel Additives(GC/MS) <br /> Preparation Method- Purge& Trap Concentrator(EPA Method 5030) <br />' Analysts Method EPA Method 8260B <br /> Client Sample No. MW 2P MW-IP MW-2 <br /> ' Practical <br /> Quantitation Units <br /> Lurut <br /> Sierra Sample No 21283 21284 21285 <br /> Analytes; <br /> 1,2-DCA 15 26 ND to lig/L <br /> MTBE 28 ND ND 10 µg/L <br /> DIPE ND ND ND so pg/L <br /> TBE ND ND ND 50 pg/L <br /> AME ND ND ND 50 pg/L <br /> ' BA 62 ND ND 50 }tg/L <br /> Dilution Factor 1 1 1 OC Limits - <br /> ' Surrogate Recovery <br /> Dibromofluoromethane 89 85 82 80-120 <br /> oluene-d$ 103 104 103 81-117 % <br /> -Bromofluorobenzene 97 85 93 74-121 <br /> Quality Assurance/Quality Control Data <br /> C Reference No • 00072/-21278 <br /> ' LCS LCS Spike Spike Dug Spike RPD <br /> Analytes % Ree C Limits % Rec. % Rec. C Limits RPD QC Limits <br /> MTBE 104 80- 120 102 104 37 - 160 1 19 1 0- 30 <br /> ' ND means Not Detected <br /> Reporting Lutvt(RL)=Practical Quantitation Limit(PQL)x Dilution Factor <br /> 1 <br /> A <br /> 1 <br />