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j Sequoia 1551 Carlos <br /> nal Road <br /> San Carlos 23 -96 0 <br /> (650)232-9600 <br /> FAX 612 <br /> 4w Analytical wwseq 0islabs om <br /> www sequoialabs wm <br /> er-Ryan/Geostrategies(l) Project Tosco(l) <br /> Sierra Court,Suite J Project Number Tosco 115886,Stockton,CA Reported <br /> Dublin CA,94568 Project Manager Deanna Harding 12/06/01 16 51 <br /> c <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-91 L111140-17 Water Sampled 11/19/01 14 56 Received 11/20/01 19 00 <br /> Ethanol NO 500 ugA 1 1110089 11/26/01 11/26/01 EPA 8260B <br /> 1,2-Dibromoethane ND 10 " " <br /> 1,2-Dlchioroethane NO 10 <br /> Di-isopropyl ether NO 10 <br /> Ethyl tent-butyl ether NO 10 <br /> Methyl tert-butyl ether NO 10 " <br /> Tert-amyl methyl ether ND 10 <br /> Tert-butyl alcohol NO 20 " <br /> Surrogate 1,2-Dichloroethane-d4 724% 70-130 " <br /> Surrogate Toluene-d8 101 % 70-130 " <br /> MW-9D L111140-18 Water Sampled 11/19/011525 Received 11/20/01 19 00 <br /> Ethanol ND 500 ugll 1 1110089 11/26/01 11/26/01 EPA 8260B <br /> 1,2-Dibromoethane NO 10 <br /> 1,2-Dichloroethane NO 10 <br /> ropyl ether NO 10 n <br /> ElWert-butyl ether ND 10 " <br /> Methyl tert-butyl ether ND 1 0 " <br /> Tert-amyl methyl ether NO 10 " <br /> Tert-butyl alcohol NO 20 " <br /> Surrogate 1,2-Dichloroethane-d4 994% 70-130 " <br /> Surrogate Toluene-d8 104% 70-130 " <br /> MW-10S L111140-19 Water Sampled 11/19/01 12 55 Received 11/20/01 19 00 <br /> Ethanol ND 500 ug/l 1 1110089 11/26/01 11/26/01 EPA 8260B <br /> 1,2-Dibromoethane NO 10 <br /> 1,2-Dichloroethane NO 10 " <br /> Di-isopropyl ether NO 10 <br /> Ethyl tert-butyl ether ND 10 " <br /> Methyl tert-butyl ether NO 1 0 <br /> Teri-amyl methyl ether NO 10 <br /> Tert-butyl alcohol NO 20 <br /> Surrogate 1,2-Dichloroethane-d4 950% 70-130 " <br /> Surrogate Toluene-d8 104% 70-130 <br /> $ is Analytical -San CarloS The results in this report apply to the samples anol}zed in accordance with the chairs of <br /> custody documenl This analytical report must be reproduced in its entirety <br /> I <br /> Page 14 of 23 <br />