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�1 Sequoia <br />Analytical <br />Gettler Ryan, Inc - Dublin Project Chevron <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 <br />Dublin CA, 94568 Project Manager Deanna L Harding <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />404 N Wiget lane <br />Walnut Geek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequolalabs corn <br />Reported <br />29 -Jul -00 17 31 <br />Reporting <br />Analyte Result Linut Units Dilution Batch Prepared Analyzed Method Note: <br />MW -7 (WO07484-08) Water Sampled 24 -Jul -00 15 28 Received 25,Jul-00 14 30 <br />Ethanol <br />ND <br />500 ug/l 1 00260t7 25 -Jul -00 25 -Jul -00 EPA 8260A <br />tert-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 dibromnde <br />ND <br />20 <br />Surrogate Dzbromofluoromethane <br />» » » <br />102% 50-150 " <br />Surrogate 1,2DzchIoroethane-l4 <br />20 <br />104% 50-150 ^ <br />MW -8A (W007484-09) Water Sampled 24 -Jul -0013 36 <br />Received 25 -Jul -00 14 30 <br />Ethanol <br />ND <br />500 ug/l 1 OG26017 25 -Jul -00 25 -Jul -00 EPA 8260A <br />tert-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 test butyl ether <br />ND <br />20 " " - <br />tert-Amyl methyl ether <br />ND <br />20 <br />1,2 Dichlomethane <br />ND <br />20 ^ ^ <br />Ethylene d%romide <br />ND <br />20 <br />Surrogate Dibromofluoromedme <br />102% <br />50-150 " <br />Surrogate 1,2 Dzehloroedme-d4 <br />104% <br />50-150 <br />MW -8B (W007484-10) Water Sampled 24 -Jul -001045 <br />Received 25-Ju1-0014 30 <br />&handl <br />ND <br />500 <br />ugp 1 0026017 23 -Jul -00 26 -Jul -00 EPA 8260A <br />tent -Butyl alcohol <br />ND <br />loo <br />w w w F w F <br />Methyl tat -butyl ether <br />ND <br />20 <br />w F w w F w <br />Di -isopropyl ether <br />ND <br />20 <br />» » » <br />Ethyl tertbutyl ether <br />ND <br />20 <br />• w w F w w <br />tent-A-m+�yt mmethylyll ether <br />ND <br />20 <br />w w w w w <br />1,2-Dichloraethaie <br />ND <br />20 <br />F w w w w N <br />Ethylene dbromide <br />ND <br />20 <br />Surrogate Dzbromofluoromed mre <br />102% <br />50-150 " <br />Surrogate 1,1 Dzchlorioedwme-l4 <br />102% <br />30-150 • " " ^ <br />Sequoia Analytical - walnut Creek 77e results in Inas repot apply to the samples wmfyzed in accordwwe with the chmn of <br />custody documem, Ties analytical report must be reproduced in lis entire* <br />Page II of 26 <br />