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444 N Wiget Lane ' <br /> Sequoia Walnut Creek CA 94598 <br /> 4�i) (925)988%00 <br /> FAX(925)988 9673 , <br /> Analyticalwww sequoialab5 c°m <br /> Q0 ��7 <br /> Secor-Rancho Cordova Project Arco , <br /> 3017 Kilgore Rd Ste #100 Project Number Arco# 4932, Stockton Reported <br /> Rancho Cordova CA,95670 Project Manager Rusty Benkosky 31-Jul-01 10 56 <br /> Volatile Organic Compounds by EPA Method 8260B , <br /> Sequoia Analytical - Walnut Creek <br /> Reporting , <br /> 'analyte Result Lama Units Dilution Batch Prepared Analyzed Method Notes <br /> 4W5,15'(W107294-01) Soil Sampled 13-Jul-01 00 00 Received 17-Jul-01 14 25 <br /> :rt-Butyl alcohol ND 25 mg/kg 100 1G27018 26-Jul 01 27-Jul-01 FPA 82608 ' <br /> Methyl tert-butyl ether ND 020 <br /> )i-isopropyl ether ND 0 10 <br /> thyl tent-butyl ether ND 0 10 " <br /> -rt-Amyl methyl ether ND 0 10 ' <br /> 2-Dichloroethane ND 010 " <br /> 2-Dibromoethane ND 020 " <br /> urrogate Dibromofluoromethane 97 2% 50-150 , <br /> urrogate 12-Dichloroethane-d4 101 % 50-150 <br /> 4W5,20'(W107294-02)Soil Sampled 13-Jul-01 00 00 Received 17-Jul-01 14 25 <br /> ert-Butyl alcohol ND 25 mg/kg 100 1627018 26-Jul-01 27-Jul-01 EPA 8260B <br /> Methyl tert-butyl ether ND 020 <br /> )a-isopropyl ether ND 010 " <br /> Ethyl tert-butyl ether ND 0 10 <br /> ert-Amyl methyl ether ND 0 10 " <br /> ,2-Dichloroethane ND 010 " <br /> 1,2-Dibromoethane ND 020 " <br /> �urrogale Dibromofluoromelhane Y 956% 50-150 ' <br /> iurrogate 1 2-Dichloroethane-d4 101 % 50-150 " <br /> KW5,25'(W107294-03)Soil Sampled 13-Jul-0100 00 Received 17-Ju[-01 14 25 ' <br /> ert-Butyl alcohol ND 25 mg/kg 100 IG27018 26-Jul-01 27-Jul-0I EPA 8260B <br /> vlethyl tert-butyl ether ND 020 <br /> :)i-isopropyl ether ND 010 " <br /> Ethyl tert-butyl ether ND 010 <br /> ert-Amyl methyl ether ND 010 <br /> 1,2-Dichloroethane ND 010 <br /> 1,2-Dibromoethane ND 020 <br /> iurrogale DibromoJluoromethane 960% 50-150 " <br /> Surrogate 12-Dichloroelhane-d4 102% 50-150 " <br /> Sequoia Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain ' <br /> custody document Ais analytical report must be reproduced in its entirib <br /> 1 <br /> Page 5 of 13 <br /> 4a� <br />