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+ 819 Striker Avenue,Suite 8 f <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921-0100 <br /> www.sequoialabs.com 1 <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 6100,Tracy,CA t <br /> 3330 Cameron Park Dr.Ste 550 Project Number. N/A Reported: 1 <br /> Cameron Park CA,95682 . Project Manager: Jay Johnson 09/21/01 15:50 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical-San Carlos 4 <br /> 1 . <br /> {' Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method N6tes J <br /> 1 F ] <br /> B33-95(S109118-04)Soil Sampled:09/04/01 13:00 Received:09/07/0115:15 _ <br /> Ethanol ND 50 mg/kg 1 1090062 09/17/01 09/17/01 EPA 8260B <br /> 1,2-Dibromoethane ND 0.10 " ^ <br /> 1,2-Dichloroethane ND 0.10 <br /> Di-isopropyl ether ND 0.10 <br /> Ethyl tort-butyl ether ND 0.10 <br /> Methyl tert-butyl ether ND 0.10 <br /> Tert-amyl methyl ether ND 0.10 i <br /> Tert-butyl alcohol ND 5.0 <br /> Surrozate:1,2-Dichloroethane-d4 74.8% 70-121 " <br /> Surrogate:Toluene-d8 84.8% 81-117 <br /> B33-104(S109118-05)Soil Sampled:09/04/0113:20 Received:09/07/0115:15 k <br /> Ethanol ND 50 mg/kg 1 1090062 09/17/01 09/17/01 EPA 8260B <br /> 112-Dibromoerhane ND 0.10 " <br /> 1,2-Dichloroethane ND 0.10 <br /> Di-isopropyl ether ND 0.10 <br /> Ethyl tert-butyl ether ND 0.10 " <br /> Methyl tert-butyl ether ND 0.10 " <br /> Tert-amyl methyl ether ND 0.10 € <br />{ Tert-butyl alcohol ND 5.0 } <br /> Surrogate:1.2-Dichloroethane-d4 78.8% 70-121 ; <br /> Surrogate:Toluene-d8 86.4% 81'117 <br /> i <br /> B33-110(5109178-06)Soil-- Sampled:09/04/0113:30 Received: 09/07/01 ]5:15 _+ <br /> Ethanol ND 50 mg/kg 1 1090062 09/17/01 09/17/01 EPA 8260E ' <br /> j 1,2-Dibromoethane ND 0.10 <br /> 1,2-Dichloroethane ND 0.10 " <br /> Di-isopropyl ether ND 0.10 ti <br /> Ethyl tort-butyl ether ND 0.10 p <br /> Methyl tert-butyl ether ND 0.10 4 h <br /> E Tert-amyl methyl ether ND 0.10 <br /> k Tert-butyl alcohol ND 5.0 n s <br />! Surrogate:1,2-Dichloroethane-d4 70.8% 70-121 i k <br /> Surrogate: Toluene-d8 91.2% 81417 1 <br /> 1 <br /> l <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> II :i <br /> Ihajcustody document. This analytical report must be reproduced in its entirety. <br /> i <br /> I fi <br /> Page Page 13 of 24 <br />