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819 Stnker Ave Su 8 <br /> Sacramento,CA 95834 <br /> Sequoia (916)921-9600 <br /> ,!D� <br /> FAX(916)921-0100 <br /> Analytical www sequaialabsCoin <br /> -Ryan-Dublin Project TOSCO 11192,Stockton,CA S305429 <br /> 6 Sierra Court,Ste J Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 05/29/03 17 15 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Lusitt Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-11 S305429-11 Water Sampled 05/14/0313 10 Received 0511510316:40 <br /> Tert-butyl alcohol 250 100 ug/1 1 3050466 05/28/03 05/28/03 EPA 8260B <br /> Di-isopropyl ether ND 20 „ <br /> Ethyl tert-butyl ether ND 20 n <br /> Tert-amyl methyl ether ND 20 <br /> Ethanol ND 500 <br /> 1,2-Dichioroethane 75 20 <br /> 1,2-Dibromoethane(EDB) ND 20 <br /> Surrogate 1,2-DCA-d4 103 % 60-140 " <br /> MW-12 5305429-12 Water Sam led 05/14/03 17 25 Received 05/15/03 16 40 <br /> Di-isopropyl ether ND 20 ug/l 1 3050466 05/28/03 05/28/03 EPA 8260B <br /> 11 <br /> Ethyl cert-butyl ether ND 20 „ <br /> " " n n n <br /> Tert-amyl methyl ether ND 20 „ <br /> It <br /> Ethanol ND 500 It " <br /> 1,2-Dichloroethane ND 20 <br /> ibromoethane(EDB) ND 20 <br /> ogate 1,2-DCA-d4 <br /> 106% 60-140 " <br /> MW-12 S305429-12RE1 Water Sampled 05/14/0317.25 Received 05/15/031640 <br /> 'Pert-butyl alcohol 2200 1000 ug/l 10 3050466 05/28/03 05/28/03 EPA 82608 <br /> Surrogate 1,2-DCA-d4 <br /> 125% 60-140 „ <br /> MW-13 5305429-13 Water Sampled 05/14/03 12 25 Received 05/15/0316 40 <br /> Tert-butyl alcohol ND 100 ug/l 1 3050466 05/28/03 05/28/03 EPA 82608 <br /> ND 20 <br /> Di-isopropyl ether <br /> Ethyl tert-butyl ether ND 2 0 „ <br /> Tert-amyl methyl ether ND 2 0 '* n <br /> Ethanol ND 500 <br /> 20 <br /> 1,2-Dtchloroethane ND <br /> 1,2-Dlbromoethane(EDB) ND 2 0 " <br /> Surrogate 1,2-DCA-d4 <br /> 110% 60-140 " <br /> ora Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> Page 12 of 23 <br />