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819 Striker Ave Ste 8 <br /> Sequoia Sacramento CA 95834 <br /> t�l) <br /> Analytical (91 )921 9600 <br /> F'AJ{(9166)921 0100 <br /> www sequoialabs com <br /> Gettler-Ryan-Dublin Project Former Unocal 5098, Stockton,CA 5308091 <br /> 6747 Sierra Court,Ste J Project Number NIA Reported <br /> Dublin CA, 94568 Project Manager Deanna L Harding 08/20/03 16 56 <br /> Gasoline1BTEXlOaygenates by EPA method 8260B <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> MW-19D(S308091-24)-Water Sampled 08104/03 14 55 _Received 08/05/03 17 35 _ <br /> Benzene ND 0 50 ug/l 1 3080141 08/12/03 08/13/03 EPA 82606 <br /> Toluene ND 0 50 <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 <br /> Methyl tert-butyl ether ND 2 0 " <br /> Surrogate 1,2-DCA-d4 110% 60-140 " <br /> Surrogate Toluene-d8 99% 60-140 " <br /> Surrogate 4-BFB 112% 60-140 " <br /> MW-215(5308091-25)Water Sampled 08/03/03 1I 30 Received 08/05/03 17 35 <br /> Benzene ND 0 50 - ug/1 - - 1 3080117_ 08/11/03 08/12/03 EPA 8260B_ _ - <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 <br /> Xylenes(total) _ _ ND 0 50 <br /> Methyl tert-butyl ether ND 2 0 " <br /> Sui rogate 1 2-DCA-d4 115% 60-140 " " " ' <br /> Suri ogate Toluene-d8 98910 60-140 " <br />_ Sui i ogate 4-BFB 105% 60440 <br /> MW-211)(5308091-26)Water Sampled 08/03/03 12 00 Received 08/05/03 17 35 <br /> Benzene ND 0 50 ug/l 1 3080117 08/11/03 08/12/03 EPA 8260E <br />__TolueneND-0 50=--------------- - - - -- - - - -- - - - - — <br />_ Ethylbenzene - ---- — - -- — ND ---0 50 " <br /> Xylenes(total) ,- -- - -- - !_ -ND— 50 - <br /> Methyl tent-butyl ether ND 2 0 " <br /> Surtogate 1,2-DCA44 110% 60-140 <br /> Surrogate-Toluene,-d8 . - _ _ Y_ s. .p - 98%a - -60-140-. <br /> Suri ogate 4-BFB 110% 60-140 " <br /> Sequoia 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 18 of 117 <br />