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404 N Wiget Lane ' <br /> 1 Sequoia Walnut Creek CA 94598 <br /> (925)988 9600 <br /> FAX(925)98&9673 <br /> Analytical %vwwsecluolalabscorn , <br /> Sceor-Rancho Cordova Prolcct Arco <br /> 3017 Kilgore Rd Ste 11100 Project Number Arco d 595 Stockton Reported ' <br /> Rancho Cordova CA 95670 Project Manager Rusty Benkosky 29-Aug-01 11 31 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Walnut Creek ' <br /> Reporting <br /> Analyte, Result Limit Units Dilution Batch PrLpared Analyzed Method Notes ' <br /> 4W9,15'(%%'l07334-l0)Soil Sampled 16-Jul-01 00 00 Received 19-Jul-01 14 20 <br /> gyri-Butyl alcohol ND 25 mg/kg 100 1G27018 26-Jul-01 29-Jul 01 EPA 8260B <br /> ALth)I test-but)l Lthe,r(M 1131--) ND 020 ' <br /> )i-isopropN I OhLr ND 0 10 <br /> clivi te_rt-butyl Liher ND 0 10 <br /> al-Arnyl meth)l ether ND 0 10 <br /> I 2-Dichloroethane ND 0 10 " <br /> l 2-DibromoethanL ND 020 <br /> surrogate Dibromofluoromethane 976% 50-150 ' <br /> surrogate 1 2-Dichloroethane-d4 105% 50-150 <br /> %IW9,20'(WI07334-11)Soil Sampled 16-Jul-0I 00 00 Received 19-Jul-01 14 20 <br /> ert-Butyl alcohol ND 2 5 mg/kg 100 IG27018 26-Jul-01 29-Jul 01 EPA 8260B ' <br /> Methyl tert-butyl ether(MTBE) ND 020 " <br /> Di-isopropyl ether ND 010 <br /> 8thyl tert-butyl ether ND 010 . <br /> ,ert-Amyl methyl ether ND 010 , <br /> 1,2-Dichloroethane ND 010 " <br /> 12-Dtbromoethane ND 020 " <br /> Surrogate Dibromofluoromethane _102% 50-150 ' <br /> Surrogate 1 2-Dichloroethane-d4 952% 50-150 " <br /> MW9,25'(W107334-12)Soil Sampled 16-Jul-01 00 00 Received 19-1ul-01 14 20 <br /> tort-Butyl alcohol ND 25 mg/kg 100 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 tert-butyl ether ND 010 ' <br /> tert-Amyl methyl ether ND 010 " <br /> 1,2-Dichloroethane ND 010 <br /> 1,2-Dtbromoethane ND 020 " <br /> Surrogate Dibromofluoromethane 100% 50-150 <br /> Surrogate 12-Dichloroethane-d4 988% 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 This analytical report must be reproduced in its entire <br /> Page 9 of 16 ' <br /> im <br /> 1 <br />