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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 sequoialabs corn <br />'Hitler R% an Inc -Dublin Project Chevron <br />6747 Sierra Court Suite 1 Project Number Chevron # 9-5775 Reported <br />Dublin CA 94568 Project Manager Scott Polston 09 -May -00 11 21 <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />Reporting <br />Inalvte Result Limit Units Dilution Batch Prepared Analyzed Method /dote <br />c•c' i Me fir l nuntiGlAn-till A.. C A nA_M .._till n4 tic Dara —A tic -Ma AM Id All 04 <br />tert-Butyl alcohol ND 20 mg/ml Air I OE08023 08-Mav 00 08 -May 00 EPA 8260A <br />Methyl tert-butyl ether ND 050 <br />Di -isopropyl ether ND 050 <br />Ethvl tert-butyl ether ND 050 <br />tert-Amyl methyl ether ND 050 " <br />Surrogate Dibromofluoromethane <br />7 <br />960% <br />50-150 <br />Surrogate 12-Diehloroethaned4 <br />960% <br />50-150 " <br />EFF 2 (15 10) (WO05160-02) At <br />Sampled 04 -May -00 15 to Received 05-Mav-00 14 40 0-04 <br />tert-Butyl alcohol <br />ND <br />20 <br />mg/ml Air I OE08023 08 -May -00 08 Mav-00 EPA 8260A <br />Methyl tent -butyl ether <br />095 <br />050 <br />" <br />Di -isopropyl ether <br />ND <br />050 <br />Ethyl tert-butyl ether <br />ND <br />050 <br />" <br />tett-Amyl methyl ether <br />ND <br />050 <br />" <br />gate <br />960% <br />50-150 <br />4gateDibromofluoromethane <br />1,2-Dichloroethaned4 <br />980% <br />50-150 <br />INF 1(08 20) (W005160-03) Air <br />Sampled 04 -May -00 08 20 Received 05 -May -0014 40 0-04 <br />tett-Butyl alcohol <br />ND <br />5000 <br />rngW Air 250 OE08023 08 -May -00 08 -May -00 EPA 9260A <br />Methyl tert-butyl ether <br />11000 <br />130 <br />Di -isopropyl ether <br />ND <br />130 <br />^ " <br />Ethyl tort -butyl ether <br />ND <br />130 <br />tert-Amyl methyl ether <br />ND <br />130 <br />Surrogate Dibmmofluommediane <br />100% <br />50-150 <br />Surrogate 1,2-Dtchlor+oet4aned4 <br />980% <br />50-150 <br />Sequoia Analytical - Walnut Creek The results its this report apply to the samples analyzed in accordance with the chmn of <br />custody document This analytical report must be reproduced in its entirety <br />Page 5 of 11 <br />