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404 N. Wlget lane <br /> Sequoia Walnut Creek, CA 945% <br /> (925)988-9600 <br /> FAX(925)988-%73 <br /> Analytical wvww.seguolalabs—rn <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Sierra Court Suite 1, Project Number: Chevron# 9-4275 Reported: <br /> Dublin CA,94568 Project Manager: Deanna L.Harding 15-Mar-01 10:45 <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 /> MW-7(W103066-09)Water Sampled: 02-Mar-01 09:25 Received: 02-Mar-0] 16:05 <br /> Ethanol ND 500 ug/l 1 1C05013 06-Mar-01 06-Mar-01 EPA 8260E <br /> tert-Butyl alcohol ND 50 <br /> Methyl tert-butyl ether ND 2.0 <br /> Di-isopropyl ether ND 2.0 <br /> Ethyl tert-butyl ether ND 2.0 <br /> tert Amyl methyl ether ND 2.0 ^ <br /> 1,2 Dichloroethane ND . 2.0 " <br /> Ethylene dibromide ND 2.0 <br />=Surrogate:Dibromofluorometharte 121=% 50=1 SD- " •• -- - <br /> Surrogate:1,2-Dichloroethane-d4 106% 50-150 <br />-MW-"103066-10)Water Sampled: 02-Mar-0109:55 Received: 02-Mar-01 16:05 <br /> Ethanol ND 500 ug/1 I 1C05013 06-Mar-01 07-Mar-01 EPA 82605 <br /> tent-Butyl alcohol ND 56 ^ „ <br /> Methyl tent-butyl ether ND 2.0 <br /> Di-isopropyl ether ND 2.0 ^ <br /> Ethyl text-butyl ether ND 2.0 „ <br /> terl Amyl methyl ether ND 2.0 <br /> 1,2-Dichloroethane ND 2.0 <br /> Ethylene dibromide- - -- --- - ND...- -2.0 - <br /> Surrogate:Dibromofluoromethane 115 % 50-150 <br /> Surrogate:1,2 Dichloroethane-d4 101 % 50-150 " ^ <br /> MW-9(W103066-11)Water Sampled: 02-Mar-01 10:39 Received: 02-Mar-01 16:05 <br /> Ethanol ND 500 ugll I 1C05013 06-Mar-01 07-Mar-01 EPA 8260B <br /> tert-Butyl alcohol ND 50 <br /> Methyl ter(-butyl ether 62 2.0 " <br /> Di-isopropyl ether ND 2.0 <br /> Ethyl tert-butyl ether ND 2.0 <br /> icrt-Amyl methyl ether ND 2.0 <br /> 1,2-Dichloroethane ND 2.0 <br /> Ethylene dibromide ND 2.0 " <br /> Surrogate:Dib romofluoromethane 120% 50-150 " ^ <br /> Surrogate:1,2 Dichloroethane-l4 106% 50-150 " <br /> sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain o <br /> custody document. This analytical report most be reproduced in its entire <br /> Page 8 of 14 <br />