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Sequoia <br />Analytical <br />1551 Industnal Road <br />San Carlos CA 94070-4111 <br />(650) 232-9600 <br />FAX (650) 232-9612 <br />www sequoialabs com <br />Gettler-Ryan/Geostrateglcs(l) <br />Project <br />Chevron(l) <br />Sampled 7110100 <br />Received 7/11100 <br />6747 Sierra Court, Suite J <br />Project Number <br />Chevron 9-5775 <br />Reported 7119100 <br />Dublin, CA 94568 <br />Pro ect Manager <br />ScottPolston <br />Volatile Organic Oxygenated Compounds by EPA Method 8260AIQuahty Control <br />Sequoia <br />Analytical - San Carlos <br />Date Spike <br />Sample QC <br />Reporting Limit Recov RPD RPD <br />Analyte <br />Analyzed Level <br />Result Result Units <br />Recov Limits % Limit % Notes* <br />Batch 0070050 <br />Date prepared 7112100 <br />Extraction Method EPA 5030B IPn1 <br />Blank <br />00700K1 <br />ND ug/l <br />loco <br />Ethatiol <br />7/12100 <br />ND <br />100 <br />'Pert -butyl alcohol <br />ND <br />200200 00 <br />Methyl tert-butyl ether <br />ND <br />2 00 <br />Di -isopropyl ether <br />ND <br />200 <br />Ethyl tert-butyl ether <br />" <br />00 <br />21 <br />Tett-amyl methyl ether <br />50 0 <br />7 <br />48 7 <br />76 0-1144 97 4 <br />7 <br />Surrogate 1 2-Dichloroethane-d4 <br />Blank <br />0070050-BLK2 <br />ND ug/l <br />1000 <br />Ethanol <br />7/13/00 <br />ND <br />100 <br />Tert-butyl alcohol <br />" <br />ND <br />2.00 <br />yl tett-butyl ether <br />" <br />2,00 <br />propyl ether <br />" <br />V <br />2.00 <br />Ethyl cert -butyl ether <br />" <br />200 <br />Tart -amyl methyl ether <br />Soo <br />494 " <br />76 0-114 98 8 <br />Surrogate 1,1-Dichloroethane-d4 <br />iQ <br />7000..50-BS1 -_ ^ <br />Al Q „wn <br />70 0-130 876 <br />1 <br />LCS <br />Methyl tett-butyl ether <br />Surrogate I2-Dschlei <br />Matrix Spike <br />Methyl tert-butyl ether <br />Surrogate 1,2-Dichlo <br />Matrix Spike Dup <br />Methyl tat -butyl ether <br />Surmgate 1,2-Dtchla <br />" 50 0 <br />g <br />7113100 Soo <br />500 <br />007005L) -S1 L007044-04 <br />7113100 500 ND <br />" Soo <br />0007 50-MSD1 L007044�04 <br />" 50 <br />458 <br />454 <br />499 <br />532 <br />760-114 916 <br />-inn IIIA Ono <br />0.114 YY d <br />600-140 106 <br />516 /a u-114 r w <br />491 ugA 600-140 98.2 250 7.64 <br />501 N76 0-1I4 1 <br />0 <br />Sequoia Analytical - San Carlos *Refer to end of report for text of notes and definitions <br />Page 6 of 7 <br />