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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 />www sequolalabs con, <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 Reported <br />Dublin CA, 94568 Project Manager Deanna L Harding 29 -Jul -00 17 31 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />knalyte Result Lutist Units Dilution Batch Prepared Analyzed Method Note: <br />MW -IIA (W007484-14) Water <br />Sampled 24,1ul-0015 40 <br />Received 25 -Jul -0014 30 <br />Ethanol <br />ND <br />500 ugll 1 OG26017 25 -Jul -00 26 -Jul -00 EPA 8260A <br />telt-Butyl alcohol <br />ND <br />100 „ ^ <br />Methyl tert-butyl ether <br />ND <br />20 ^ <br />Di -isopropyl ether <br />ND <br />20 <br />Ethyl tert-butyl ether <br />ND <br />20 " <br />tert-Amyl methyl ether <br />ND <br />20 " <br />1,2-Dichloroethane <br />ND <br />20 <br />Ethylene dibrortude <br />ND <br />20 <br />Surrogate Dibromgfluoromethane <br />104% <br />50-150 " <br />Surrogate 1,2-Drchloroethane-d4 <br />102% <br />50-150 " <br />MW -11B (W007484-15) Water <br />Sampled 24 -Jul -0010 16 <br />Received 25 -Jul -0014 30 <br />Ethanol <br />ND <br />500 <br />ug/l 1 OG26017 25 -Jul -00 26 -Jul -00 EPA 8260A <br />text -Butyl alcohol <br />ND <br />100 <br />Methyl tert-butyl ether <br />ND <br />20 <br />Di -isopropyl ether <br />ND <br />20 <br />Ethyl tert-butyl ether <br />ND <br />20 <br />tent -Amyl methyl ether <br />ND <br />20 <br />1,2-Dichloroethane <br />ND <br />20 <br />Ethylene d9bromide <br />ND <br />20 <br />w w w w R <br />Surrogate Drbromofluoromedme <br />102% <br />50-150 <br />Surrogate 1,2-Dichloroed=e-d4 <br />106% <br />50-150 <br />MW -12A (W007484-16) Water <br />Sampled 24-Ju1-0014 30 <br />Received 25 -Jul -0014 30 <br />Ethanol <br />ND <br />5�0ry0 <br />uga 1 OG26017 27-Ju1-M 27 -Jul -W EPA 8260A <br />terutyl alcohol <br />t B <br />ND <br />100 <br />Methyl tart -butyl ether <br />ND <br />20 <br />w w w R w w <br />Di -isopropyl ether <br />ND <br />20 <br />R R R x x n <br />Ethyl tert butyl ether <br />ND <br />20 <br />tert-Amyl methyl ether <br />20 <br />R R ^ R ^ <br />. <br />1,2-DlVhloweI alio <br />,N77D� <br />ND <br />20 <br />N N w R R R <br />Ethylene dbromrde <br />ND <br />20 <br />R R x R R R <br />Surrogate Dibromofhtoromedtane <br />106% <br />50-150 " <br />Surrogate 1 2Dtchloroed=e-d4 <br />980% <br />50-150 <br />Sequoia Analytical - Walnut Creek The results in dus report apply to the samples analyzed in accordance with the chain <br />custody document Thrs analytical report must be reproduced in its enno <br />Page 13 of 26 <br />r#I <br />