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Sequoia <br />Analytical <br />404 N Wiget lane <br />Walnut Creek, CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Former Chevron #9-5775 Repotted <br />Dublin CA, 94568 Project Manager Steve Carter 03 -Mar -001 l 41 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creep <br />Reporting <br />Analyte Result Lunn Units Dilution Batch Prepared Analyzed Method Note! <br />MW -7 (Wo03068-01) Water Sampled 02 -Mar -0012 30 Received 02 -Mar -00 16 47 <br />tert-Butyl alcohol ND 100 ug/1 1 0003007 02 -Mar -00 02 -Mar -00 EPA. 8260A <br />Methyl 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 />Surrogate Dibromofiuoromethane 100% 50-150 <br />Surrogate 1,2-Dichloroethane-d4 106 % 50-150 " <br />MW -5(73) (W003068-02) Water Sampled 02 -Mar -00 13 10 Received 02 -Mar -00 16 47 <br />tert-Butyl alcohol ND 100 ugll I 0003007 02 -Mar -00 02 -Mir -00 EPA 8260A <br />Methyl tert-butyl ether 83 20 " <br />Di -isopropyl ether ND 20 <br />Ethyl tert-butyl ether 74 20 " <br />tent -Amyl methyl ether ND 20 <br />larrogate Dibromofluoromethane <br />rrogate 1,2 Dtchloroethane-d4 <br />102% 50-150 <br />110% 50-150 <br />ec}uoia Analytical - Walnut Creek The results in this report apply to the sa mples an in axcordance with the chaun of <br />custody document Thas analytical report must be reproduced en i is entirety <br />ail emp, a tory itector Page 3 of 6 <br />MI <br />