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1► � V <br /> }s <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(1) <br /> __ _ __ __ �Projoct Number Tosco#5886,Stockton,CA— _ _ —_ - _ �P° <br /> 6747 Sierra Court,Suite J 05/25/01 16 59 <br /> Dublin CA,94568 Project Manager Deanna Harding <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical- San Carlos <br /> Repomng 3P&C Source %REC RPD <br /> Analytc Result L mit Units LITMI Result- %REC= LAtilts= RPD Lumt Notes <br /> Batch 1050043-EPA 5030B 1T <br /> LCS(1050043-BS1) Prepared&Analyzed 05/11/01 <br /> 45 3 200 ug/l Soo 906 70-130 <br /> Methyl tart-butyl ether <br /> Surrogate 1,2-Dichloroethane-d4 456 " Soo 912 78-114 <br /> Surrogate Toluene-d8497 " 500 994 <br /> 88-I10 <br /> d8 <br /> Matrix S ike(1050043-MSI) Source L105073-01 Prepared&Analyzed 05/11/01 <br /> Methyl test-butyl ether 568 200 ug/l 500 125 886 60-140 <br /> Surrogate 1 2-Dichloroethane-d4 453 500 906 76-114 <br /> Surrogate Toluene-d8 <br /> 514 500 103 88-110 <br /> Matrix Spike Du (1050043-MSD1) Source L105073-01 Prepared&Analyzed 05/11/01 <br /> Methyl tett-butyl ether 604 200 ug/l 500 125 958 60-140 614 25 <br /> Surrogate 12-Dichloroethane-d4 454 500 908 76-114 <br /> Surrogate Toluene-4 499 500 998 88-110 <br /> Batch 1050074-EPA 5030B IT <br /> Blank(1050074-BLK1) Prepared&Analyzed 05/17/01 <br /> Ethanol ND 1000 uSn <br /> 1,2-Dtbtotnoethane ND 200 " <br /> 1,2-Dtchlosoethane ND 200 " <br /> Di-isopropyl ether ND 200 <br /> Ethyl tertbutt'!dher ND 200 <br /> Methyl tent-butyl ether ND 200 " <br /> Tert-amyl methyl ether ND 200 <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 1,2-Dichloroethane-d4 449 500 898 76-114 <br /> Surrogate Toluene-d8 536 500 107 88-110 <br /> MW <br /> Sequoia Analytical-San Carlos <br /> The results to this report apply to the samples analyzed in accordance with the chat <br /> custody document Thu analytical report must be reproduced in its entirety <br /> Page 25 of 28 <br />