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404 N.WMget Lane <br /> Sequoia Walnut Creek.CA 94598 <br /> 1 4 (925)988-96)0 <br /> 673 <br /> %0 Analytical FAX(925}slabs. corn <br /> www.sequplalal�s.00m <br /> Gettler Ryan,Inc.-Dublin Project: Chevron <br /> 6747 Sierra Courl Suite J Project Number: Chevron# 94275 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 MethodNotes <br /> MW-1 (W103066-03)Water Sampled:02-Mar-01 11:19 Received: 02-Mar-01 16:05 <br /> Ethanol ND 2500 ug/1 5 1005013 06-Mar-01 06-Mar-01 EPA 826013 <br /> tent-Butyl alcohol ND 250 <br /> Methyl tert-butyl ether 1300 10 " <br /> Di-isopropyl ether ND 10 <br /> Ethyl tert-butyl ether ND 10 <br /> tet[Amyl methyl ether ND 10 <br /> 1,2-Dichloroethane- - - .ND- -- —10 <br /> Ethylene dibromide ND 10 <br />-Surrogate:Dibromofluoromethane 106% 50-150 " <br /> Surrogate: 1,2-Dichloroethane-d4 98.0% 50-150 <br /> MW-2(W103066-04)Water Sampled: 02-Mar-01 11:40 Received: 02-Mar-01 16:05 <br /> Ethanol ND 500 ug/l 1 1 C05013 06-Mar-01 06-Mar-01 EPA 82608 <br /> tert-Butyl alcohol ND 50 " <br /> Methyl tent-butyl ether 410 2.0 " <br /> Di-isopropyl ether ND 2.0 <br /> Ethyl tert-butyl ether ND 2.0 <br /> tent-Amyl methyl ether 6.0 2.0 " .. <br /> 1,2-Dichloroethane ND 2.0 <br /> Ethylene dibromide ND 2.0 <br /> Surrogate:Dibromofluoromethane 115% 50-150 <br /> Surrogate:1,2Diehloroethane-d4 109% 50-150 " <br /> MW-3(W103066-05)Water Sampled: 02-Mar-0107:08 Received: 02-Mar-01 16:05 <br /> Ethanol ND 1000 ug/1 2 1 C05013 06-Mar-01 06-Mar-01 EPA 8260E <br /> tert-Butyl alcohol ND 100 <br /> Methyl tert-butyl ether 430 4.0 <br /> Di-isopropyl ether ND 4.0 <br /> Ethyl tert-butyl ether ND 4.0 " <br /> tert-Amyl methyl ether 10 4.0 <br /> 1,2-Dichloroethane ND 4.0 „ <br /> Ethylene dibromide ND 4.0 <br /> Surrogate:Dibromofluoromethane 106% 50-150 " <br /> Surrogate:1,2-Dichloroethane-l4 89.4% 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. This analytical report must be reproduced in its entire <br /> Page 6 of 14 <br />