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404 N W Wet Lane <br /> Sequoia Walnut Creek,CA 94598 <br /> (925)988-9600 <br /> FAX(925)988-9673 <br /> qwr Analytical Www sequolalabs com <br /> An <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192,Stockton Reported <br /> Dublin CA,94568 Project Manager Doug Lee 09-Jan-01 18 05 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> ,4 <br /> Reportmg. Spike Source %REC RPD <br /> Analyte , k 'Result Ltnut Units Level Result %REC Lmuts RPD Lmut Notes <br /> Batch OL27013-EPA 5030B [PIT] r <br /> Blank(OL27013-BLKI) er Prepared&Analyzed 27-Dec-00 <br /> Ethanol ND 1000 ug/I <br /> tent-Butyl alcohol ND 100 " <br /> Methyl teat-butyl ether ND 40 " <br /> Di-isopropyl ether ND 40 " <br /> Ethyl tart-butyl ether ND 40 " <br /> tort-Amyl methyl ether ND - 40 " <br /> Surrogate DibromoJluoromethane 4&0 500 960 50-150 <br /> Surrogate 1,1 Dichloroethane-d4 ° 450 500 900 50-150 <br /> Blank(OL27013-BLK2) Prepared&Analyzed 28-Dec-00 <br /> Ethanol r I ND 500 ug/l <br /> r <br /> tett-Butyl alcohol ND 50 " <br /> Mathyl tent-butyl ether ND 20 • <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tett-butyl ether 5 ND 120 " <br /> Li F <br /> tett Amyl methyl N <br /> ether D 2 0 " <br /> r <br /> Surrogate Dibromq&oromethane 500 " Soo 100 50-150 <br /> Surrogate 1 1Dichloroethane-M 4&0 500 960 50.150 <br /> Blank(OL27013-BLK3) Prepared&Analyzed 05-Jan-01 <br /> Ethanol ND 500 ug/1 <br /> test-Butyl alcohol ND 50 " <br /> Methyl tert-butyl ether , ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> ted-Amyl methyl ether ND 20 " <br /> Surrogate DibromoJluoromethane 460 SO 0 910 50-150 <br /> Surrogate 1 2 Dichloroethane-d4 410 Soo 820 so-ISO <br /> Sequoia Anabrtical-Walnut Creek The results in this report apply to the samples anatyzed In accordance with the chaino <br /> custody documein ?jus analytical report must be reproduced in its entire 0 <br /> Page 5 of 8 <br />