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t <br /> F <br /> Sequoia <br /> Analytical 865l,CA Drive <br /> Morgan Hill,CA 45037 <br /> (408)776-9600 <br /> FAX(408)782-6308 <br /> www.sequoialabs.corn <br /> 1 URS Corporation[Arcot] <br /> 2870 Gateway Oaks Dr.,Ste 300 Project:e,RCO#2168,Stockton,CA <br /> Project NumbertGOC$I-0010 MOK0608 <br /> Sacramento CA,95833 <br /> Project ManagerNernon P.Elarth Reported: <br /> Volatile Organic Compounds by EPA Method 826013 - 11/28/0515:08 <br /> Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Analyte Reporting Spike Source %REC <br /> Result Limit Units Level Result %UC Limits RPD <br /> Batch 5K22027-EPA 5030B/5035A McOH/EPA 8260B RPD Limit ]votes <br /> Blank(5K22027-BLKI) <br /> ten-Amy[methyl ether Prepared: 11/22/05 Analyzed: 11/23/05 <br /> ND 0.025 mg/kg <br /> Benzene <br /> ND 0,050 <br /> tert-Butyl alcohol <br /> ND 510 <br /> Di-isopropyl ether <br /> ND 0,025 <br /> 1,2-Dibromoethane(EDB) <br /> ND 0.025 <br /> 1,2-Dichloroethane <br /> ND 0.025 <br /> Ethanol <br /> Ethyl tert-buryND 10[ether ND <br /> Ethylbenzene 0.025 <br /> " <br /> - ' Methyl tert-butyl ether ND 0.050 <br /> Toluene ND 0,025 <br /> " <br /> Xylenes(total) ND 0.050ND <br /> 50 <br /> Gasoline Range Organics(C4-C]2) 0.0 <br /> ND 2.5.5 <br /> Surrogate:1,2-Dichloroethane-d4 0.00602 „ <br /> 12027-$S1) 0.00500 110 60-115 <br /> Laboratory Control Sample(SK <br /> tert-Amyl methyl ether Prepared: 11/22/05 Analyzed: 11/23/05 <br /> Benzene <br /> 0.558 0.025 mg/kg 0.564 <br /> 99 80-130 <br /> tert-Butyl alcohol 0.177 0.050 0.194 91 65-125 ' <br /> 0 5.37 <br /> Di-isopropyl ether 6.52 5. 121 80-165 <br /> 0.526 0.025 0.567 93 85-115 <br /> 1,2-Dibromoethane(EDB) 0.619 <br /> 1,2-Dichloroethane 0'025 0.597 0,025 5.61 0.558 111 85-130 <br /> " f <br /> Ethanol 10 5.31 106 35-150 0.552 108 63-124 <br /> Ethyl tert-butyl ether 0.545 �� ! <br /> Ethylbeazene 0.025 0.564 97 80-125 <br /> 0.267 0.050[ 0283 <br /> Methyl tert-bury . <br /> ether <br /> ] 94 80-135� <br /> Toluene 0.270 0,025 0.263 103 75-]15 <br /> p <br /> j <br /> Xylenes(total) 1.32 0.050 1.39 95 85-125 <br /> 55 <br /> Gasoline flange Organics(C4-C12) 1.50 0.050 1. 97 80-140 <br /> 15.3 2,5 16.5 93 60-140 <br /> Surrogate:1,1-Dichloroethane-d4 0.00601 <br /> 800500 110 60-125 <br /> f <br /> f <br /> Sequoia Analytical-Morgan Hill <br /> The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document. Unless otherwise stated,results are reported on a wet weight basis. <br /> This analytical report must be reproduced in its entirety. F <br /> i <br /> j <br /> t <br /> } <br /> Page 7 of 9 <br /> t <br /> - I� <br />