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Sequoia 819 Scram Avenue,Suite 8 <br /> Sacramento,CA 95634 <br /> A (916)921-9600 <br /> Analytical <br /> FAX(916)921-0100 <br /> www.scquoialabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: Arco 6100,Tracy,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number: N/A Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 09/20/01 14:36 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical- San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> B37-30 5109123- 1 Soil Sam led: /06/01 09.30 Received:09/10/01 14:00 <br /> Ethanol ND 50 mg/kg 1 1090062 09/18/01 09/18/01 EPA 8260B <br /> 1,2-Dibromoethane ND 0.to <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 80.0% 70-121 11 <br /> Surrogate: Toluene-d8 98.0% 81-117 11 " <br /> B37-55 5109123-02 Sail Sampled:09/06/0110:15 Received:09/1010114:00 <br /> Ethanol ND 50 mg/kg 1 1090062 09/18/01 09/18/01 EPA 8260B <br /> 1,2-Dibromoethane ND 0.10 " <br /> ..1,2-Dichloroethane ND 0.10 " <br /> i-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 91.2% 70-121 " <br /> Surrogate:Toluene-d8 106% 81-117 <br /> B37-65(S109123-031 Soil Sam led:09/06/0110:45 Received:09/10/01 14:00 <br /> Ethanol ND 50 mg/kg 1 1090062 09/18/01 09/18/01 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 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-0 86,4% 70-121 " <br /> Surrogate: Toluene-d8 100% 81-117 " <br /> _Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. This analytical report must be reproduced in its entirety. <br /> Page Page 4 of 9 <br />