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r <br /> 404 N Wlget Lane <br /> Sequoia Walnut Creek, -9600 <br /> 94598 <br /> 4 (925)9898 8-9600 <br /> FAX(925)988-9673 <br /> a- ) Analytical - www sequolalabs corn <br /> Gettler Ryan,Inc -Dublin Project Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron 119-6171 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12-Jun-01 07 52 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Walnut Creek <br /> Reporting <br /> Analyte Result Lunt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-8(W105572-02)Water Sampled 25-May-01 12 52 Received 25-May-01 17 25 <br /> Ethanol ND 500 ug/l 1 1E30011 30-May-01 30-May-01 EPA 8260B <br /> tert.Butyl alcohol ND 20 " 1. 1104-Jun-01 " <br /> Methyl tent-butyl ether 640 so " 4 07-Jun-01 " <br /> Dl-isopropyl ether ND 20 " 1 04-Jun-01 <br /> Ethyl tert-butyl ether ND 20 <br /> tert Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dlbromtde ND 20 " <br /> Surrogate Dibromofluoromethane 106% 50-150 " <br /> Surrogate 1,2-Dichloroethaned4 112% 50-150 " <br /> MW-9(W105572-03)Water Sampled 25-May-01 12 23 Received 25-May-01 17 25 <br /> Ethanol ND 500 ug/1 1 1E30011 30-May-01 30-May-01 EPA 8260B <br /> Aautyl alcohol ND 20 <br /> yl tert-butyl ether ND 20 <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 " <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromide ND 20 " <br /> Surrogate Dibromofluoromethane 108% 50-150 " <br /> Surrogate 1,2-Dichloroethanett4 118% 50-150 " <br /> MW-10(W105572-04)Water Sampled 25-May-01 11 53 Received 25-May-01 17 25 <br /> Ethanol ND 500 ug/l 1 1E30011 30-May-01 30-May-01 EPA 8260B <br /> tent-Butyl alcohol ND 20 <br /> Methyl tert butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tent-butyl ether ND 20 " <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dichloroethane ND 20 " <br /> Ethylene dibromtde ND 20 " <br /> Surrogate Dibromofluoromethane 106% 50-150 " <br /> Surrogate 1,2-Dichloroethaned4 114% 50-150 " <br /> ota 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 to its entirety <br /> Page 5 of 13 <br />