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0 4' <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek C94598 <br /> (925)988-96W <br /> 4 ID FAX(925)988-9673 <br /> Analytical www sequolWabs`°m <br /> AV- <br /> Gettler Ryan,Inc -Dubhn Project Chevron <br /> 6747 Sierra Court Suite] ProlectNumber Chevron R 9-3232 Reported <br /> Dublin CA,94568 Project Manager Deannal, Harding 13-Mar-01 07 46 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Walnut Creek <br /> Reportmg <br /> Analyte Result Lunn Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-1 (W102608-02)Water Sampled 23-Feb-0107 21 Received 26-Feb-01 16 05 <br /> Ethanol ND 500 ug/l 1 1 B27013 28 Feb-01 28-Feb 01 EPA 8260B <br /> tent-Butyl alcohol ND 50 <br /> Methyl tert-butyl ether ND 20 <br /> D1-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tent-Amyl methyl ether ND 20 " <br /> Surrogate Dtbranofluoromethane 102 % 50-150 " <br /> Surrogate 1,1-Dtchloroethane-d4 826% 50-150 <br /> MW-2(W102608-03)Water Sampled 23-Feb-0107 59 Received 26-Feb-01 16 05 <br /> Ethanol ND 500 ugfl 1 1B27013 28-Feb-01 28-Feb-01 EPA 8260B <br /> tert-Butyl alcohol ND 50 " <br /> Methyl tert-butyl ether ND 20 <br /> Di-isopropyl ether ND 20 <br /> tert-butyl ether ND 20 <br /> tINKmyl methyl ether ND 20 " <br /> Surrogate Dtbromofluoromethane 104% 50-150 <br /> Surrogate 1,2-Dchloroethane-d4 946% 50-150 " <br /> MW-3(W102608-04)Water Sampled 23-Feb-010650 Received 26-Feb-01 16 05 <br /> Ethanol ND 500 ug/l 1 1B27013 28-Feb-01 28-Feb-01 EPA 8260B <br /> tert Butyl alcohol 220 50 " <br /> Methyl tert-butyl ether 16 20 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> Cert-Amyl methyl ether 26 20 " <br /> Surrogate Dtbromofluoromethane 102% 50-150 <br /> Surrogate 1,2-Dtchloroethane-d4 832% 50-150 " <br /> SP^ oto Analytical-Walnut Creek The results to Bas report apply to the samples analyzed to accordance with the churn of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 4 of 8 <br />