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Road <br /> ial <br /> Sequoia 15511nA940 <br /> San Carlos <br /> CCA 94U 0 <br /> 70 <br /> (650)232-9600 <br /> qwAnalytical <br /> FAX(650)232-9612 <br /> www.sequoialabs.com <br /> Gettler-Ryan/Geostrategies(I) Project: Tosco(]) <br /> 6747 Sierra Court, Suite J Project Number: Tosco#11195,Lathrop,CA Reported: <br /> Dublin CA,94568 Project Manager: Deanna 1-larding 12/10/01 19:11 <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-]l (LI IIJ47-11)Water Sampled: 11/21/01 13:13 Received: 11/21/01 18:15 <br /> Ethanol ND 1700 ugll 3.33 1110100 11/28/01 11/28/01 EPA 8260B <br /> 1,2-Dibromoethane ND 3.3 " " <br /> 11 <br /> 1,2-Dichloroethane ND 3.3 " <br /> Di-isopropyl ether ND 3.3 " <br /> Ethyl ten-butyl ether ND 3.3 <br /> Methyl tert-butyl ether 610 3.3 " <br /> Tert-amyl methyl ether ND 3.3 " <br /> Tert-butyl alcohol ND 67 " <br /> Surrogate,- 1,2-Dichloroelhane-d4 107% 70-130 " <br /> Surrogate: Toluene-d8 98.8% 70-130 <br /> MW-12(L111147-12)Water Sampled: 11/21/01 12:45 Received: 11/21/01 18:15 <br /> Ethanol ND 500 ug/l 1 1110104 11/29/01 11/29/01 EPA 8260B <br /> 1,2-Dibromoethane ND 1.0 " <br /> 1,2-Dichloroethane ND 1.0 " <br /> Di-isopropyl ether ND 1.0 <br /> Ethyl tert-butyl ether ND 1.0 <br /> Methyl tert-butyl ether ND 1.0 " <br /> Tert-amyl methyl ether ND 1.0 " <br /> Tert-butyl alcohol ND 20 " <br /> Surrogate: 1.2-Dichloroethane-d4 103% 70-130 <br /> Surrogate: Toluene-d8 101 % 70-130 " <br /> CC-WS(Ll11147-13)Water Sampled: 11/21/01 13:45 Received: 11/21/01 18:15 <br /> Ethanol ND 500 ug/l 1 1110100 11/29/01 11/29/01 EPA 8260B <br /> 1,2-Dibromoethane ND 1.0 " " " " " " <br /> 1.2-Dichloroethane ND 1.0 " " " <br /> Di-isopropyl ether ND 1.0 " <br /> Ethyl tert-butyl ether ND 1.0 <br /> Methyl tert-butyl ether 5.0 1.0 <br /> Tert-amyl methyl ether ND 1.0 <br /> Tert-butyl alcohol ND 20 <br /> Surrogate: 1,2-Dichloroelhane-d4 99.2% 70-130 " <br /> Surrogate: Toluene-d8 101 % 70-130 " <br /> Sequoia Analytical - San Carlos The results in this report apply to the samples analyzed in accordance with the chain of, j <br /> custody document. This analylical report must be reproduced in its entirely. <br /> Pale 10 of 18 <br />