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151 Indusina!Raad <br /> 5 <br /> Sequoia San c.,,,,.CA 94070 <br /> (D- Analy tical (650)232-9602 <br /> 'wr uwuxsequai labscolm <br /> tler-Ryan/Geostraie¢lesl l) Project Tosco(l) <br /> 7 Sierra Court Suite 7 Protect Number Tosco#5886 Stockton Reported <br /> lin CA 94568 Protect Manager Deanna Harding 05/20/02 12 25 <br /> Volatile Organic 8 Ovvgenated Compounds by EPA Method 8260B <br /> Sequoia Analytical - San Carlos <br /> Reporting <br /> Analvic Rc�uli Limit Unna Dilution Batch Prepared Anah zed Method Notes <br /> A1VV-7D(L205012-11)NA'aler Sampled 05/03/02 09 10 Received 05/03/02 16 50 -� <br /> Ethanol- ND 500 ug/l 1 2050013 05/07/02 05/07/02 EPA 82608 <br /> 1 2-Dibromoethane ND 2 0 <br /> 1,2-Dtchloroethane ND 2 0 <br /> Di-isopropyl ether ND 2 0 <br /> Ethyl tent-butyl ether ND 2 0 <br /> Methyl tent-butyl ether ND 20 <br /> Teri-amyl methyl ether ND 20 <br /> Tert-butyl alcohol ND 100 <br /> Surrogate 12-Dichloroethane-d4 94 0% 70-130 " <br /> Surrogate Toluene-d8 99 2% 70-130 <br /> MMI-7S(L20S012-12)Water Sampled 05/03/02 08 35 Received 05/03/02 16 50 <br /> Ethanol ND 500 ugll 1 2050013 05/07/02 05/07102 EPA 8260B <br /> 1,2-Dibromoethane ND 20 <br /> 1,2-Drchloroerhane ND 20 <br /> opropyl ether ND 20 ' <br /> tert-butyl ether ND 20 <br /> ethyl tert-butyl ether ND 20 " <br /> Tett-amyl methyl ether ND 2 0 <br /> Ten-butyl alcohol ND 100 <br /> Surrogate 1 2-Drchloroerhane-d4 966% 70-130 " <br /> Surrogate Toluene-d8 972% 70-130 " <br /> MM'-8S(L205012-13)NVaier Sampled 05/02/02 11 05 Received 05/03/02 16 50 <br /> Ethanol ND 500 ug/1 1 2050011 05/07/02 05/07/02 EPA 8260B <br /> 1,2-Dibromoethane ND 2 0 " <br /> 1,2-Dtchloroethane ND 2 0 " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl ten-butyl ether ND 20 " <br /> Methyl ten-butyl ether ND 2 0 <br /> Ten-amyl methyl ether ND 20 ^ <br /> Ten-butyl alcohol ND 100 " <br /> Surrogate 12-Drchloroerhane-d4 962% 70-130 " <br /> Surrogate Toluene-d8 980% 70-130 " <br /> to Analytical - San Carlos The results in this report appiv to the samples analired in arca dance%ith the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 12 of 23 <br />