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404 N Wigetlant ' <br /> Sequoia Walnut Creek CA 44598 <br /> (925)988 9600 <br /> FAX(925)988%73 <br /> aAnalytical www sequoialabs com I <br /> Sccor-Rancho Cordova Project Arco ' <br /> 3017 Kilgore Rd Ste #100 Project Number Arco# 595 Stockton Reported <br /> Rancho Cordova CA 95670 Project Manager Rusty Benkosky 29-Aug-01 111 31 <br /> Volatile Organic Compounds by EPA Method 8260B ' <br /> Sequoia Analytical - Walnut Creek <br /> Reporting ' <br /> Analyte Result Limit Units Dilution Batch Prepared Analysed Method Nous <br /> 11W7,15' (W107334-04)Soil Sampled 16-Jul-010000 Received 19-Jul-01 14 20 <br /> ert-Butyl alcohol ND 2 5 mglkg 100 1627018 26 Jul 01 29 Jul 01 1 PA 826013 ' <br /> Acthyl ten-bu(yl ether(M FBI-) ND 0 20 <br /> )t-isopropyl ether ND 0 10 <br /> -thyl tort-butyl ether ND 010 " <br /> ert-Amyl methyl ether ND 010 ' <br /> 12-Dichloroethane ND 010 <br /> 12-Dibromoethane ND 020 " <br /> surrogate Dibromofluoromerhane 956% 50-150 ' <br /> surrogate 12-Dichloroethone-d4 948% 50-150 <br /> "W7,20'(WI07334-05)Soil Sampled 16-Jul-01 00 00 Received 19-Jul-01 14 20 <br /> ert-Butyl alcohol ND 2 5 mg/kg 100 1G27018 26 Jul-01 29-Jul-01 EPA 8260B ' <br /> vlethyl tert-butyl ether(MTBE) ND 020 " <br /> Dr-isopropyl ether ND 0 10 " <br /> Ethyl ten-butyl ether ND 010 <br /> ert-Amyl methyl ether ND 010 " <br /> 1,2-Dtchloroethane ND 010 <br /> 2-Dibromoethane ND 020 " <br /> Surrogate Dibromofluoromethane 904% 50-150 Y ' <br /> Surrogate 12-Dichloroethane-d4 100% 50-150 " <br /> MW7,25'(W107334-06)Soil Sampled 16-Jul-01 00 00 Received 19-Jul-01 14 20 <br /> telt-Butyl alcohol ND 25 mglkg too IG27018 26-Jul-01 29-Jul-01 EPA 8260B <br /> Methyl tert-butyl ether(MTBE) ND 020 <br /> Di-isopropyl ether ND 010 " « <br /> Ethyl ten-butyl ether ND 010 <br /> tert-Amyl methyl ether ND 010 <br /> 1,2-Dtchloroethane ND 010 " <br /> 1,2-Dibromoethane ND 020 <br /> Surrogate Dibromofluoromethane 924% 50-150 " <br /> Surrogate 1 2-Dichloroethane-d4 960% 50-150 <br /> 1 <br /> Sequoia Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the chaj, ' <br /> custody document This analytical report must be reproduced in its enter <br /> Page 7 of 16 <br /> �u <br />