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IZ Sequoia 619 Sinker Ste 8 <br /> Sacramento CAA 95834 <br /> (916)921 9500 <br /> Analytical FAX(9 16)921-0100 <br /> www sequoialabs cern <br /> i;!6747 <br /> ttler-Ryan-Dublin Project Former Unocal 5098, Stockton,CA S309091 <br /> Sierra Court,Ste J Project Number N/A Reported <br /> blin CA,94568 Project Manager Deanna L Harding 08/20/03 16 56 <br /> Gaso11neWEVOxygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> J'.alyte Result Limit Units Dilution Hatch Prepared Analyzed Method Notes <br /> W-9(5308091-10)Watei Sampled 08105/03 11 00 Received 08/05/03 17 35 <br /> nzene ND 050 ug/1 1 3080240 08/18/03 08/19/03 EPA 8260B <br /> tuene ND 050 <br /> l " <br /> ylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " " <br /> ethyl tert-butyl ether ND 2 0 <br /> rrogate 1 2-DCA-d4 107% 60-140 " <br /> Surrogate Toluene-d8 98% 60-140 <br /> Ii rogate 4-BFB 105 % 60-140 <br /> W-10(5308091-11)Water Sampled 08/04/0313 25 Received 08/05/03 17 35 <br /> Benzene ND 050 Ug/1 1 3080117 08/11/03 08/12/03 EPA 8260B <br /> uene ND 050 <br /> tylbenzene <br /> ND 050 <br /> Xylenes(total) ND 050 " <br /> tert-butyl ether ND 2 0 " <br /> ate 12-DCA-d4 113 % 60-140 " <br /> ui rogate 7"oluene-d8 98% 60-140 <br /> il rrogate 4-BFB 113 % 60-140 <br /> -]DA(5308091-12)Water Sampled 08/04/03 13 00 Received 08/05/03 17 35 <br /> Benzene ND 050 ug/1 1 3080117 08/11/03 08/12/03 EPA 82608 <br /> luene ND 050 " <br /> ylbenzene ND 050 <br /> lens(total) ND 050 <br /> Methyl teri-butyl ether ND 20 „ <br /> Urrogate 12-DC,1-d4 115% 60-140 <br /> ,rogate Toluene-d8 101 % 60-140 " <br /> Surrogate 4-BFB 117% 60-140 <br /> a Analytical - Sacramento The results in this i eport apply to the samples analyzed in accoi dance with the chain of <br /> custody document Unless otherwise stated i esults are reported on a wet weight basis <br /> This analytical r eport must be reproduced in its enirrety <br /> Page 13 of 117 <br />