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Sequoia <br /> 1551lrrdu1II <br /> San Carlos CA 9407007G-49 <br /> 4 (650)232-9600 <br /> FAX(650) 232-%12 <br /> ,Q Analytical %vww seguolalabs <br /> a � <br /> Cettler-Rymr/Geostrategtes(1) Project. Tosco(5)-ZZ <br /> 6747 Sierra Court,Suite J Project Number Tosco(Unocal)SS#6981 Reported <br /> -- <br /> Dubltn CA;94568-- - - - — -- Project Manager Deanna Haazding — - - - 01/11/0l 13-54 <br /> Volatile Organic Oxyganated 8 Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical-San Carlos <br /> Reporting Spare source %REC RPD <br /> lAnalyto Result Lxmrt Umts 14"1 Result 4/6REC lamps RPD Limit Notes <br /> _Batch 1010020-EPA 5030B (PIT] <br /> Blank(1010020-BLKl) Prepared&Analyzed 01/05/01 <br /> Bthemol ND 1000 ug/I <br /> 1,2-Dibtornoethane ND 200 " <br /> 1,2-Drchloroed ane ND 200 " <br /> Dt-isopropyl ether ND 200 " <br /> Ethyl tert4nAyl ether ND 200 " <br /> Methyl tart-butyl ether ND 200 " <br /> Teat-amyl methyl ether ND 200 " <br /> Teat-butyi alcohol ND 100 " <br /> Surrogate 12 Dichloroethane-d4 453 500 906 76-114 <br /> Surrogate Toluene-d8 499 500 998 88-110 <br /> Blank(1010020-BLK2) Prepared&Analyzed 01/09/01 <br /> Ethanol ND 1000 ug/l <br /> 1,24hbromood ane ND 2 00 " <br /> 1,2-Drchloroethane ND 200 " <br /> Dr-lsoprMd ether ND 200 " <br /> Ethyl tert-butyl ether ND 200 " <br /> Methyl tert-butyl etber ND 200 " <br /> Teat-amyl methyl ether ND 200 " <br /> Teat4ndyl alcohol ND 100 " <br /> Surrogate 1,1 Dichlonoethane-d4 509 500 102 76-114 <br /> Surrogate Toluene-d8 521 500 104 88-110 <br /> LCs(1010020-BSI) Prepared&Analyzed 01/05/01 <br /> Methyl text-butyl ether 451 200 ug/I Soo 902 70-130 <br /> Surrogate 1,2-Dtchloroethane-d4 452 " Soo 904 76-114 <br /> Surrogate Toluen"8 501 500 100 88-110 <br /> Sequoia Analytical-San Carlos The results in this report apply to the samples analyzed to accordance with the char <br /> custody document Thu analytical report must be reproduced in its entirety <br /> Page 25 of 27 <br />