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Sequoia San�+� Industrial70-4i�1 1 <br /> (650)232-9600 <br /> FAX(650)232-9612 <br /> Analytical www sequolalabs corp~ k, <br /> Gettler-Ryan/Geostiategies(l) Project. Tosco(5)-ZZ <br /> 6747 Sura Court,Suite J Project Number Tosco(Unocal)SS#6981 Reported <br /> Dpb1m CA;94568 ---- - - - Project Manager-Deanna H - - — 01/11/0113 54 <br /> Volatile Organic Oxygenated Compounds by EPA Method 8260B- Quality Control <br /> Sequoia Analytical-San Carlos <br /> Reporting Slike soEmce DMEC RPD <br /> Analyte Result Limit Umts Level Result %REC leans RPD 1"wt Notes <br /> Batch 1010006-EPA 5030E <br /> Blank(1010006-BLKI) Prepared&Analyzed 01/03/01 <br /> Ethanal ND 1000 ug/1 <br /> Teat-btdyl alcohol ND 100 " <br /> Methyl tert4pAA ether ND 200 " <br /> Dr-isopropyl ether ND 200 " <br /> Ethyl tent-butyl ether ND 200 " <br /> Ted-amyl methyl ether ND 200 " <br /> Surrogate 12-Dichloroethane-d4 526 Soo 105 76-114 <br /> LCS(1010006-BSI) Prepared&Analyzed 01/03/01 <br /> Methyl test-butyl ether 517 200 ug/I 500 103 70-130 <br /> Surrogate 1 2-Dichloroed=ed4 335 500 107 76-114 <br /> Matrix Spike(101000&MSl) Source L012217-01 Prepared&Analyzed 01/03/01 _ <br /> Methyl tert-batyl ether _ 404 200 ug/1 500 ND 808 60-140 <br /> Surrogate 1,2-Drchloroethaned4 522 " Soo 104 76-114 <br /> Matrix Spike Dnp(1010006-MSD1) Source L012217-01 Prepared&Analyzed 01/03/01 <br /> Methyl ted-butyl ether 407 200 ug/1 Soo ND 814 60-140 0 740 25 <br /> Surrogate 12 Dichloroethaned4 530 500 106 76-114 <br /> Batch 1010019-EPA 5030B [P/Tl <br /> _ <br /> Blank(1010019-BLK1) Prepared&Analyzed 01/05/01 <br /> Ethanol ND 1000 u9/1 <br /> Test-butyl alcohol ND 100 " <br /> Methyl ted4nAyl ether ND 200 " <br /> Di-isopropyl ether ND 200 " <br /> Ethyl tert-butyl ether ND 200 " <br /> Tert-amyl methyl ether ND 200 " <br /> Surrogate 1,1 Dichloroethaned4 493 500 986 76-114 <br /> Sequoia Analytical-Sax/Carlos The results In this report apply to the samples analyzed to accordance with the char <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 19 of 27 <br />