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SIERRA ANALYTICAL <br /> GHH Engineering, Inc, 732 <br /> ELAP No.: _,_0 <br /> 8084 Old Auburn Road, Suite E Date Sampled: 04/30/01 <br />' Citrus Heights, CA 95610 Date Received: 05/03/01. <br /> Date Prepared: 05/04/01 <br /> Date Analyzed: 05/04/01 <br />' Sierra Project No.: 0105-056 Analyst: Sm <br /> Client Project ID: USA-Stockton!5007.10 <br /> Sample Matrix: Water Report Date: 05/07/01 <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-6P MW-4P MW-5P MW-3P MW-f <br /> Practical <br /> Quantitation Units <br />' Limit <br /> Siem Sample No.: 13929 13930 13931 13932 13433 <br /> Analytes: <br />' <br /> 1,2-DCA 4.4 <br /> ,_ ND 8.7 10 88 1.0 µglL <br />' MTBE 34 ND ND 30 51 1.0 µg/L <br /> DIPE ND ND 180 120 ND 5.0 gg/L <br /> ETBE ND ND ND ND ND 5.0 1tg/L, <br />' TAME ND ND ND ND ND 5.0 Ag/L, <br /> TBA 46 ND ND ND 97 5.0 ggg/L <br />' Dilution Factor I I 1 l I QC Limits - <br /> Surrogate Recovery: <br /> Dibromotluorotnethane 101 102 102 98 100 80-120 <br />' Toluene-d8 lot 102 101 100 100 81-117 % <br /> 4-Bromotluorobenzene 102 101 102 99 101 74-121 <br />' <br /> 1QC Reference No.: 010504-13935 <br /> Quality Assurance/Quality Control Data <br /> Analytes: LCS Spike pie Dup. Spike RPD <br /> % Rec. QC Limits % Ree. % Ree. QC Limits RPD QC Limits <br /> MTBE 98 80- 120 92 96 37-160 4.3 0_ 30 <br /> ND means Not Detected <br /> Reporting Limit(RL)=Practical Quantitation Limit(11%).x Dilution Factor <br /> 1 <br /> 1 <br />