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404 N Wiget bane <br /> 4DSequoia Walnut Cfe&,CA 945% <br /> (925)988-9600 <br /> Analytical FAX(925)988-W3 <br /> www mcnaialabs c <br /> Secor-Rancho Cordova Project Arco <br /> 3017 Kilgore Rd,Ste #100 Project Number Arco#4932,Stockton Reported <br /> Rancho Cordova CA,95670 Protect Manager Rusty Benkosky 24-Jul-02 12 03 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Walnut Creek <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> DMW-2,20'(W206289-22)Sod Sampled 11-Jun-02 0910 Received 14-.Tun-02 08 55 _ <br /> tert-Butyl alcohol ND 25 mg/kg 100 2F25021 21 Jun-02 25-Jun-02 EPA 8260B <br /> Methyl tert-butyl ether(MTBE) ND 020 " <br /> Di-isopropyl ether ND 010 <br /> Ethyl tert-butyl ether ND 010 " <br /> tert-Amyl methyl ether ND 010 " <br /> 1,2-Dichloroethane ND 010 " <br /> 1,2-Dibromoethane ND 020 " <br /> Surrogate Dibromofluoromethane 111% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 972% 50-150 " <br /> DMW-2,25'(_W206289-23)Soil Sampled 11-Jun-020915 Received 14-Jun-02 08 55 _ <br /> tert-Butyl alcohol ND 25 mg/kg 100 2F25021 21 Jun-02 25-Jun-02 EPA 82608 <br /> Methyl tert-butyl ether(MTBE) ND 020 " <br /> Di-isopropyl ether ND 010 <br /> Ethyl tert-butyl ether ND 010 <br /> tert-Amyl methyl ether ND 010 <br /> 1,2-Dichloroethane ND 010 " <br /> 1,2-Dibromoethane ND 020 " <br /> Surrogate Dibromofluoromethane 105% 50-150 " <br /> Surrogate 1,2-Dichloroethane-d4 100% 50-150 " <br /> BMW-2,30'(W20628.9_211 Sod Sampled 114un-02 09 20 Received 14-Tun-02 08 55 <br /> tert-Butyl alcohol ND 25 mg/kg 100 2F25021 21-Jun-02 25-Jun-02 EPA 8260B <br /> Methyl tert-butyl ether(MTBE) 051 020 " <br /> Di-isopropyl ether ND 010 <br /> Ethyl tert-butyl ether ND 010 <br /> tert-Amyl methyl.ether ND 010 <br /> 1,2-Dichloroethane ND 010 <br /> 1,2-Dibromoethane ND 020 <br /> Surrogate Dibromofluoromethane 104% 50-150 " <br /> Surrogate 1,1-Dichloroethane-d4 102% 50-150 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Ther analytical report must be reproduced in its entirety <br /> Page 27 of 38 <br />