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819 Sinker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> (916)921-9600 <br /> it WOAnalytical FAX(916)921 0100 <br /> WWW sequoialabs corn <br /> r-Ryan-Dublin Project Former Unocal 5098,Stockton,CA 5302592 <br /> 6 Sierra Court,Ste J Project Number NIA Reported <br /> ublm CA, 94568 Project Manager Deanna L Harding 03/10/03 I7 17 <br /> Gasoline\BTEXIOxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> A S302592-01 Water Sampled 02/20/03 00 00 Received 02/24/03 15 30 <br /> Benzene ND 050 ug/l 1 3030057 03105/03 03/06/03 EPA 82606 <br /> ]uene ND 050 <br /> hylbenzene ND 050 <br /> ylenes(total) ND 050 <br /> Methyl tert-butyl ether ND 2 0 <br /> Irrogate 1,2-DCA-d4 108% 60-140 <br /> rrogale Toluene-d8 118YO 60-140 <br /> Surrogate 4-BFB 100% 60-140 <br /> W-1 S302592-02 Water Sam led 02/20/03 14 55 Received 02/24/03 15 30 <br /> Iffenzene 33 050 ug/l 1 3030057 03/05/03 03/06/03 EPA 8260E <br /> Toluene 1 8 050 <br /> thenes <br /> ylbenzene l 0 050(total) 36 0 50 <br /> Methyl tent-butyl ether ND 2 0 <br /> le 1,2-DCA-d4 104% 60-140 " <br /> ate Toluene-d8 110% 60440 <br /> Surrogate 4-.BFB 99% 60-140 " <br /> W-3 S3025W-03 Water Sampled 02/20/03 15 45 Received 02/24/03 15 30 <br /> nzene 3700 10 ug0 20 3030057 03/05/03 03/06/03 EPA 8260B <br /> Toluene 900 10 <br /> thylbenzene 1000 10 <br /> ylenes(total) 3900 10 <br /> ethyl tert-butyl ether ND 40 " <br /> rogate 1,2-DCA-d4 106% 60-140 <br /> frrogale <br /> rogate Toluene-d8 110% 60-140 <br /> 4-BFB 94% 60-140 " <br /> S a Analytical - Sacramento The i esults in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated r esults are reported on a wet weight basis <br /> This analyttcaI report must be reproduced in its entiret)� <br /> Page 9 of 126 <br />