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819 Striker Ave Ste 9 <br /> Sequoia Sa °,C►95834 <br /> (916)921-9600-9600 <br /> Analytical „mss ,ala; com <br /> Ryan-Dublin Project Former Unocal 2859,Stockton,CA 5305466 <br /> 6 Sierra Court,Ste ] Project Number NIA Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06/03/03 18 41 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Lunit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-17 S305466-1$ Water Sampled 05/19/0311 10 Received 05/191031710 <br /> Tert-butyl alcohol ND 5 0 ug/l 1 3060013 05/31/03 05/31/03 EPA 8260B <br /> Methyl tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 050 It h " " " <br /> Ethyl tert-butyl ether ND 050 " " <br /> Tert-amyl methyl ether ND 050 " <br /> 1,2-Dichloroethane 95 050 <br /> 1,2-Dibromoethane(EDB) ND 050 " <br /> Surrogate 1,2-DCA-d4 73 % 60-140 " <br /> MW-18 5305466-14 Water Sampled 05/19/03 11 40 Received 05/19/0317 10 <br /> Tert-butyl alcohol ND 5 0 ug/1 1 3060013 05/31/03 05/31/03 EPA 8260B <br /> Methyl tert-butyl ether ND 050 " " <br /> Di-isopropyl ether ND 0 50 " " <br /> Ethyl tert-butyl ether ND 050 <br /> Tert-amyl methyl ether ND 050 " <br /> l�hloroethane 45 0 50 <br /> I romoethane(EDB) ND 050 " <br /> Surrogate 1,2-DCA-d4 97% 60-140 <br /> MW-19(5305466-20)Water Sampled 05/19/03 13 55 Received 05/19/0317 10 _ <br /> Tert-butyl alcohol ND 5 0 ug/l 1 3060013 05/31/03 06/01/03 EPA 826013 <br /> Methyl tert-butyl ether ND 050 " <br /> Di-isopropyl ether ND 0 50 " <br /> Ethyl tert-butyl ether ND 0 50 <br /> Tert-amyl methyl ether ND 050 <br /> 1,2-Dichloroethane 39 050 " <br /> 1,2-Dibromoethane(EDB) ND 0 50 <br /> Surrogate 1,2-DCA-d4 106% 60-140 " <br /> is 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 13 of 20 <br />