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Sequoia Walnut N WiLane <br /> t Creek CAA 94598 <br /> (925) 988-9600 <br /> FAX(925) 988-9673 <br /> Analytical www sequolalabs corn <br /> Gettler Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Prujm(Number Tomo# 11192 Repurled <br /> Dublin CA,94568 Project Manager Doug Lee 10-May-01 17 06 <br /> Volatile Organic Compounds by EPA Method 8260E - Quality Control <br /> ' Sequoia Adalytical- Walnut'Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch IE09011 - EPA 5030B(PIT) <br /> Blank(1E09011-BLKI) Prepared&Analyzed 08-May-01 <br /> Ethanol ND Soo ug/l <br /> tert-Butyl alcohol ND 20 " <br /> Methyl tent-butyl ether ND 20 " <br /> Di-isopropyl ether ND 20 <br /> Ethyl tert-butyl ether ND 20 <br /> tert-Amyl methyl ether ND% 20 <br /> 1 2-Dichloroethane ND 2 0 " <br /> r <br /> Ethylene dsbromsde ND 20 " <br /> Surrogate Dibromofluoromethane 510 500 102 50-150 <br /> Surrogate 1 2-Dichloroethane-d4 500 500 100 50-150 <br /> Blank(I E0901 I-BLK2) Prepared 09-May-01 Analyzed 10-May-01 - <br /> Ethanol ND 500 ug/l <br /> tert-Butyl alcohol ND 20 <br /> Methyl tert-butyl ether ND 20 " <br /> Ds-isopropyl ether ND 20 <br /> Ethyl telt-butyl ether ND 20 <br /> tert-Amyl methyl ether ND 20 <br /> 1,2-Dschloroethane ND 20 " <br /> Ethylene dsbromsde ND 20 " <br /> Surrogate Dibromofluoromethane 550 500 110 50-150 <br /> Surrogate 1 2-Dichloroethane d4 580 500 116 50-150 <br /> LCS(1E09011-BSI) Prepared&Analyzed 08-May-01 <br /> Methyl tert-butyl ether 472 20 ugll 500 944 70-130 <br /> Surrogate Dibromofluoromethane 500 500 100 50-150 <br /> Surrogate 1 2-Dichloroethane-d4 500 500 100 50-150 <br /> Sequoia Analytical -Walnut Creek The results in this report apply to the samples analyzed in accordance with the char <br /> custody document This analytical report must be reproduced m in enter <br /> Page 5 of 9 <br />