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Sequoia <br />� Analytical <br />Gettler Ryan hlc -Dublin <br />6747 Sierra Court Suite 1 <br />Dublin CA, 94568 <br />Projetit Chevron <br />Project Number Chevron # 9-5775 <br />Project Manager Scott Polston <br />Volatile Organic Compounds by EPA Method 8260A <br />Sequoia Analytical - Walnut Creep <br />404 N Wiget Lane <br />Walnut Creek CA 94598 <br />(925) 988-9600 <br />FAX (925) 988-9673 <br />www sequoialahs corn <br />Reported <br />18 -Apr -00 11 39 <br />Reporting <br />Analvte Result Limit Units Dilution BatLh Prepared Anal,,zed Method Note,, <br />lnf (15 25) (W004304-04) Air <br />Sampled 12 -Apr -00 15 25 <br />Received 13 -Apr -00 17 to <br />Naphthalene <br />ND <br />100 mg/m' Air 100 OD 14016 14 -Apr OO 14 -Apr 00 EPA 8260A <br />n-Propy lbenzene <br />ND <br />50 " <br />Stvrene <br />ND <br />50 " <br />1112 -Tetrachloroethane <br />ND <br />50 " <br />1 1,2 2 -Tetrachloroethane <br />ND <br />50 <br />Tetrachloroethene <br />ND <br />50 ^ <br />Toluene <br />1 1200 <br />50 " <br />1,2,3-Tnchlorobenzene <br />ND <br />50 " <br />1 2 4-Tnchlorobenzene <br />ND <br />50 <br />I I I -Trichloroethane <br />ND <br />50 <br />11.2-Tnchloroethane <br />ND <br />50 " <br />Tnchloroethene <br />ND <br />50 <br />Tnchlorofluoromethane <br />ND <br />100 " <br />I 2,3-Tnchloropropane <br />ND <br />50 " <br />1,2,4-Trunethylbenzene <br />ND <br />50 <br />1,3,5-Tnmethylbenzene <br />ND <br />50 " <br />11 <br />Vinyl chloride <br />ND <br />50 <br />Total Xylenes <br />300 <br />5o <br />Surrogate Dibromofluoromethane <br />106% <br />70-130 <br />Surrogate 1,2-Dichloroethane-d4 <br />980% <br />70-130 " <br />Surrogate Toluene -d8 <br />980% <br />70-130 <br />Surrogate 4-Bromofluoroberuene <br />960% <br />70-130 " <br />EX -1 (W004304-05) Water Sampled <br />12 -Apr -001623 <br />Received 13 -Apr -00 17 10 <br />Dichlorodifluoromethane <br />ND <br />100 <br />ugfl 50 OD13012 13 -Apr -W 14 -Apr -00 EPA 8260A <br />Chloromethane <br />ND <br />100 <br />Vinyl chloride <br />ND <br />100 <br />Bromomethane <br />ND <br />250 <br />" <br />Chloroethane <br />ND <br />100 <br />" <br />Tnehlorofluoromethane <br />ND <br />100 <br />" <br />1 t-Dichloroethene <br />ND <br />100 <br />Methylene chloride <br />ND <br />500 <br />" <br />trans-l,2-Dichloroethene <br />ND <br />100 <br />" <br />I,l-Dichloroethane <br />ND <br />100 <br />" <br />2 2-Dichloropropane <br />ND <br />250 <br />" <br />cis-l2-Dichloroethene <br />ND <br />100 <br />" <br />Bromochloromethane <br />ND <br />100 <br />" <br />Chloroform <br />ND <br />100 <br />" <br />Sequoia Analytical - Walnut Creek The re sults in this report apply to the samples ma47ed in accordance with the chain of <br />custody document This analytical report must be reproduced in its entrre40 <br />Page 11 of 22 <br />i#. <br />