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619 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> L Analytical FAX 9 -0100 <br /> sc <br /> wwwquoialauoialabs.com <br /> �+ <br /> Geological Technics Inc. Project: Cardoza <br /> g � S405064 <br /> 1101 7th Street Project Number: 1135.2 Reported: <br /> Modesto CA,95354 Project Manager: Jenny Weese 06/15/04 15:19 <br /> Gasoline\BTEX\Ox enates b EPA method 8260B-Quality Control <br /> Yg Y h' <br /> Sequoia Analytical- Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 4050217-EPA 5030B [MeOH] <br /> Laboratory Control Sample(4050217-BSI) Prepared:05/16/04 Analyzed:05/17/04 <br /> Methyl tert-butyl ether 0.0215 0.0050 mg/kg .0.0216 100 .60-140 <br /> Benzene 0.0116 0.0050 „ 0.0134 87 70-130 <br /> Toluene 0.0750 0.0050 0.0758 99 70-130 <br /> Gasoline Range Organics(C4-C12) 0.883 1.0 1.10 80 70-130 <br /> Surrogate:1,2-DCA-d4 0.00959 0.0100 96 60-140 <br /> Surrogate:Toluene-d8 0.0103 0.0100 103 60-140 <br /> Surrogate:4-BFB 0.00935 0.0100 94 60-140 <br /> Laboratory Control Sample Dup(4050217-13SDI) Prepared:05/16/04 Analyzed:05/17/04 <br /> L Methyl tert-butyl ether 0.0211 0.0050 mg/kg 0.0216 98 60-140 2 25 <br /> Benzene 0.0116 0.0050 0.0134 87 70-130 0 25 <br /> Toluene 0.0751 0:0050 0.0758 99 70-130 0.1 25 <br /> Gasoline Range Organics(C4-C12) 0.883 1.0 1.10 80 70-130 0. .25 <br /> Surrogate:1,2-DCA-d4 0.00951 0.0100 95 60-140 <br /> Surrogate:Toluene-d8 0.0104 0:0100 104 60-140 <br /> Surrogate:4-BFB 0.00945 0.0100 94 60-140 <br /> L Batch 4050328-EPA 5030B [P/T] <br /> Blank(4050328-BLKI) Prepared&Analyzed:06/08/04 <br /> Tert-butyl alcohol ND 0.050 mg/kg <br /> Methyl tert-butyl ether ND 0.0050 <br /> Di-isopropyl ether ND 0.0050 <br /> Ethyltert-butyl ether ND 0.0050 <br /> Tert-amyl methyl ether ND 0.0050 <br /> 1,2-Dichloroethane ND 0.0050 <br /> 1,2-Dibromoethane(EDB) ND U050 <br /> Benzene ND 0.0050 „ <br /> Ethylbenzene ND 0.0050 <br /> Toluene ND 0.0050 <br /> Xylenes(total) ND 0..010 <br /> Gasoline Range Organics(C4-C12) ND 1.0 " <br /> Surrogate:1,2-DCA-d4 0.0115. 0.0100 115 60-140 <br /> Surrogate:Toluene-d8. 0.00972 0.0100 97 60-140 <br /> Surrogate:4-BFB 0.00979 0.0100 98 60-140 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody doctunent. Unless'otherwise stated,results are reported on a wet weight basis. <br /> This.analytical report must be reproduced in its entirety. <br /> Page 16 of 19 <br />