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404 N Wlget Lane <br /> Sequoia Walnut Creek, 94598 <br /> -9600 <br /> (925)98 988-�XOO <br /> FAX(925)988-9673 <br /> �,I _ Analytical1 4 www�'uolal�corn <br /> db <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco# 11192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 18-Jan-01 07 35 <br /> Volatile Organic Compounds by EPA Method 8260B -,Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source III RPD <br /> Analyte Result Lrmnt Units Level Result "I Lurnts RPD Luntt Notes <br /> Batch OL28009-EPA 5030B {PIT] <br /> Blank(OL28009-BLK4) ,'' ' ` r Prepared&Analyzed 08-Jan-01 <br /> Ethanol ND 500 ug/1 <br /> tart-Butyl alcohol a ND 50 " <br /> Methyl tent-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tort-butyl ether ND 20 " <br /> Cert-Amyl methyl ether ND 20 " <br /> Surrogate DibromoJluoromethane 470 SO 0 940 50450 <br /> Surrogate 1,1 Dichloroethane-d4 390 Soo 780 SO4150 <br /> LCS(01,28009 BSl) Prepared&Analyzed 27-Dec-00 <br /> Methyl Cert-butyl ether 400 t20 ug/l 500 800 70-130 <br /> , <br /> , <br /> Surrogate DlbromoJluoromethane 490 Soo 98.0 50-150 <br /> Surrogate 1 2-Dichloroethane-d4 440 500 88'0 50-ISO <br /> LCS(OL28009-BS2) Prepared&Analyzed 28-Dec-00 <br /> Methyl tent-butyl ether 425 20 Ug/l. 500 850 70-130 <br /> Surrogate DibromoJluoromethane , '500 500 100 50-150 <br /> r <br /> Surrogate 1,1 Dichloroethane-d4 450 500 900 50-150 <br /> LCS(0L28009-BS3) Prepared&Analyzed 29-Dec-00 <br /> Methyl tort-butyl other 416 20 ug/1 500 832 70-130 <br /> Surrogate DibromoJluoromethane 460 500 920 SO-I50 <br /> Surrogate 1 2-Dichloroethane-d4 380 500 76.0 50-150 <br /> LCS(OL28009-BS4) Prepared&Analyzed 08-Jan-01 <br /> Methyl tart-butyl ether 413 20 ug/I 300 826 70-130 <br /> Surrogate DibromoJluoromethane 480 500 960 50-150 <br /> Surrogate 1,2-Dichloroethane-d4 38.0 S00 760 50.150 <br /> Sequoia Analytical-Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced m its entire <br /> Page 7 of 9 <br />