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� as <br /> Sequoia 1551 1ndustnal Road <br /> 94070 <br /> "� San Carlos CA 94070 <br /> (650)232 9600 <br /> FAX 32 9612 <br /> � F Analytical www <br /> lab$con <br /> www sequoialabs corn <br /> Gettler-Ryan/Geostrate gies(1) Project Tosco(l) <br /> 6747 Sierra Court,Suite J Project Number Tosco#4409,Stockton Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 05/03/02 10 10 <br /> Volatile Organic 8 Oxygenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-7 L204085-08 Water Sampled 04/18/02 12 03 Received 04/18/0218 15 <br /> Ethanol ND 500 ug/l 1 2040064 04/22/02 04/22/02 EPA 8260B <br /> 1,2-Dtbromoethane ND 2 0 " <br /> 1,2-Dichloroethane ND 2 0 " <br /> Di-isopropyl ether ND 2 0 " <br /> Ethyl tent-butyl ether ND 2 0 " <br /> Methyl tent-butyl ether ND 2 0 " <br /> Tert-amyl methyl ether ND 2 Q " <br /> Tert-butyl alcohol ND 100 " <br /> Surrogate 1,2-Dichloroethane-d4 111 % 70-130 " <br /> Surrogate Toluene-d8 100% 70-130 " <br /> MW-8(L204085-09)Water Sampled 04/18/02 12 50 Received 04/18/02 18 15 <br /> Ethanol - ND 500 ug/! 1 2040067 04/22/02 04/22/02 EPA 82608 <br /> 1,2-Dtbromoethane ND 2 0 <br /> 1,2-Dichloroethane 2 0 2 0 <br /> Di-isopropyl ether ND 2 Q <br /> Ethyl text-butyl ether ND 2 Q " <br /> Methyl tert-buryl ether ND 2 0 A-01 <br /> Tert-amyl methyl ether ND 2 0 " <br /> Tert-butyl alcohol ND 100 " <br /> Surrogate 1,2-Dichloroethane-d4 102% 70-130 " <br /> Surrogate Toluene-d8 990% 70-130 " <br /> _MW-9(L204085-10)Water Sampled 04/18/02 15 50 Received 04/18/02 18 15 <br /> Ethanol ND 500 ug/1 1 2040064 04/22/02 04/22/02 EPA 82608 <br /> 1,2-Dibromoethane ND 2 0 " <br /> 1,2-Dichloroethane ND 2 0 " <br /> Di-isopropyl ether ND 2 0 " <br /> Ethyl tert-butyl ether ND 2 0 " <br /> Methyl tert-butyl ether 2 4 2 0 A-01 <br /> Tert-amyl methyl ether ND 2 D " <br /> Tert-butyl alcohol ND 100 " <br /> Surrogate 1,1-Dichloroethane-d4 988% 70-130 " <br /> Surrogate Toluene-d8 980% 70-130 " <br /> Sequoia Analytical -San Carlos The results in this report apply to the samples analyzed in accordance with the chain <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 8 of 16 <br />