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SIERRA ANALrnCA <br /> GHH Engineering, Inc. ELAP No.: 2320 <br /> 11960 Heritage Oak Pl,Suite 2B Date Sampled: 07129/02 <br /> Auburn,CA 95603 Date Received: 08/01102 <br /> Date Prepared. 08/01/02 <br /> Date Analyzed: 08/01/02 <br /> Sierra Protect No.: 0208-003 Analyst: SM <br /> Client Project ID: USA#5007 Stockton <br /> Sample Matrix: Water Report Date: 08/05/02 <br /> BTEX and Fuel Oxygenates(GC/MS) <br /> Preparation Method Purge&Trap(EPA Method 5030B <br /> Analysis Method- EPA Method 8260B <br /> Client Sample No.: MW-5P MW-6P <br /> Practical <br /> Quantitation Units <br /> Limit <br /> Sierra Sample No.: 15883 15884 <br /> Analytes <br /> Benzene ND ND 10 µg/L <br /> 1,2-Dtchloroethane 21 5 3 10 µ,°IL <br /> t-Iso-Propyl Ether(DIPE) 190 64 10 µ81L <br /> Ethyl-t-Butyl Ether(ETBE) ND ND 10 µg/L <br /> thylbenzene ND ND 10 µg/L <br /> ethyl-t-Butyl Ether(MTBE) ND ND 10 µg/L <br /> ert-Amyl Methyl Ether(TAME ND ND 10 µ8/L <br /> emary-Butyl Alcohol(TBA) 76 76 50 µg/L <br /> Toluene ND ND 10 µg/L <br /> ,p-Xylenes ND ND <br /> 10 µ81L <br /> o•Xylene ND ND 10 µg/L <br /> Dilution Factor 1 1 QC Limits - <br /> Surrogate Recovery <br /> ibromotluoromethane 99 100 86- 118 <br /> aluene-d8 9$ 98 <br /> 88- 110 % <br /> Bromofluorobenzene 91 90 86- 115 <br /> C Reference No., 020801-15873 <br /> CS CS QC Spike Spike Dup Spike RPD RPD <br /> FTnchloroetheine <br /> % Rec Limits %Rec. %Rec. C Luntts C Limits <br /> thene 104 80- i20 92 90 50- 150 22 0-30 <br /> 106 80-120 90 88 71 - 157 22 0-30 <br /> e=ene 108 80-120 86 86 37 - 151 00 0.30 <br /> Toluene 102 80- 120 90 86 47- 150 45 0-30 <br /> Chlorobenzene 108 80-120 96 1 92 1 37- 160 1 43 <br /> ND means Not Detected <br /> Reporting Urrat(RL)=Practical Quantitation Lumt(PQL)r Dilution Factor <br /> Reporting <br /> -Benzene,Toluene,Ethylbenzene and Xylenes <br />