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Sequoia <br />� Analytical <br />Gettler Rvan Inc -Dublin Project Cheaper <br />6747 Sierra Court Suite J Project Number Chevron # 9-5775 <br />Dublin CA 94568 Project Manager Scott Polston <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creek <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925)988-9600 <br />FAX (925) 988-9673 <br />www sequoWabs corn <br />Reported <br />12 -Apr -00 11 36 <br />Reporting <br />Analvte Result Limit Units Dilution Batch Prepared Analyzed Method Note: <br />INF (09 53) (W004172-01) Air Sampled 06 -Apr -00 09 53 Received 07 -Apr -00 17 45 <br />tent -Butyl alcohol <br />ND <br />10000 mg/ml Air 500 OD10012 09 Apr 00 09 Apr -00 EPA 8260A <br />Meth)I tent -butyl ether <br />29000 <br />630 1250 <br />Di -isopropyl ether <br />ND <br />250 500 <br />Ethyl tert-bum I ether <br />2300 <br />250 " <br />tent-Amyi methyl ether <br />630 <br />250 ^ <br />Surrogate Dibromofluoromethane <br />104% 50-150 " <br />Surrogate 1 2-Dichloroethane-a?4 <br />102% 50-150 " <br />EFF (09 59) (W004172-02) Air Sampled 06 -Apr -00 09 59 Received 07 -Apr -0017 45 <br />tert-Butyl alcohol <br />ND <br />20 mWin' Air I OD10012 09 -Apr 00 09 -Apr 00 EPA 8260A <br />Methyl tert-butyl ether <br />47 <br />050 ^ <br />Dr -isopropyl ether <br />ND <br />050 ^ ^ <br />Ethyl tert-butyl ether <br />ND <br />050 ~ ~ <br />tert-Amyl methyl ether <br />ND <br />050 ^ <br />Surrogate Dibromofluoromethane <br />100% 50-150 " <br />Surrogate 1,2-Dichloroethane-d4 <br />102% 50-150 " • <br />INF (16 49) (W004172-03) Air Sampled 06 -Apr -0016 49 Received 07 -Apr -0017 45 <br />cert -Butyl alcohol <br />ND <br />25000 ingirro Air 1250 OD10012 09 -Apr -00 09 -Apr -00 EPA 9260A <br />Methyl tent -butyl ether <br />62000 <br />630 ^ ^ ^ ^ ^ <br />Di-tsopropyl ether <br />ND <br />630 <br />Ethyl tert-butyl ether <br />3100 <br />630 <br />tert-Amyl methyl ether <br />830 <br />630 <br />Surrogate Dihromofluoromedwne <br />100% 50-150 <br />Surrogate 1,2-Dichlornethane-d4 <br />100% 50-150 " <br />Sequoia Analytical - Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br />custody document This anatyu cal report must be reproduced in its entirety <br />is <br />Page 5 of 12 <br />03 <br />