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819 Striker Ave Ste 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> 1W Analytical FAX (916)921-0100 <br /> Gettler-Ryan-Dublin Project Former Unocal 0187,Stockton,CA S211332 <br /> 6747 Sierra Court,Ste J Protect Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/02 17 49 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical -Sacramento <br /> Reporting - <br /> Analyte Result Limit Units Dilution Batch Prevared Analyzed Method Notes <br /> NP-1-111 (5211332-30)Water Sampled 11/06/02 17 08 Received 11/12102 09 45 <br /> Tert-butyl alcohol ND _ 100 ugn 1 2110312 11/20/02 11/20/02 EPA 8260B <br /> Methyl tert-butyl ether ND 20 It it " <br /> Di-isopropyl ether ND 20 " " <br /> Ethyl tert-butyl ether ND 20 to " <br /> Tert-amyl methyl ether ND 20 " <br /> Surrogate 1 2-DCA-d4 102% 60-140 " <br /> NP-2-22 (5211332-31)Water Sampled 11/06/02 15 51 Received- 11/12102 09 45 <br /> Tert-butyl alcohol ND 100 Ug/1 1 2110312 11/20/02 11/20/02 EPA 8260B <br /> Methyl tent-butyl ether ND 20 1. Po " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tent-butyl ether ND 20 " <br /> Tert-amyl methyl ether ND 20 to I. <br /> oo <br /> Surrogate 1,2-DCA-d4 119% - _60-140 <br /> NP-2-60 lS21,1332-32)Water Sampled 11106/0216.24 Received 11/12/02 09.45 - r <br /> Teri-butyl alcohol ND 100 ug/1 1 2110312 11/20/02 11/20/02 EPA 8260E <br /> Methyl tert-butyl --the- *iD 20 " It I to " <br /> Di-isopropyl ether ND 20 " <br /> Ethyl tert-butyl ether ND 20 " <br /> Tert-amyl methyl ether ND 20 " <br /> to <br />—Surrogate-1,2-DCA-d4 T -- 116% ---60-140 <br />_ NP-2-]16(5211332-33)Water Sampled 11/06/021525 Received 11/12/020945 <br /> Tert-butyl alcohol T T - ND - 100 l -ugA 1 2110312 11/20/02 11/20/02 EPA 8260E T� <br /> Methyl tert-butyl ether ND 20 1. " " " <br /> Di-isopropyl ether ND 20 it 1. " <br /> Ethyl tert-butyl ether ND 20 It <br /> It <br /> It <br /> Tert-amyl methyl ether ND 20 It <br /> It <br /> Surrogate 1,2-DCA-d4 122% 60-140 " <br /> Sequoia Analytical-Sacramento The results in this repot t apply to the samples analyzed in accordance with the ch <br /> of custody document Unless otherwise stated, results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> 24 of 41 <br />