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Sequoia 819 Striker Ave Ste B <br /> Sacramento CA 95834 <br /> Analytical (916)9219600 <br /> FAX(916)921-0100 <br /> www sequonilabs cam <br /> ttler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA <br /> 6747 Sierra Court,Ste J 5308091 <br /> Protect Number NIA Reported <br /> Dublin CA,9456$ Project Manager Deanna L Harding 08/20/03 16 56 <br /> GasollnelBTEXIQxygenates by EPA method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source <br /> JnTalyrc Result Limit Units Level <br /> u/o %REC RPD <br /> Level Result REC Limits RPD Limit Notes <br /> Batch 3080117-EPA 5030B [PIT <br /> lank(3080117-BLKI) Prepared 08/11/03 Analyzed 08/12/03 <br /> enzene ND 0 50 ug/l <br /> Toluene ND 050 " <br /> thylbenzene ND 050 <br /> ylenes(total) ND 050 " <br /> ethyl tent-butyl ether ND 20 <br /> of rrogate 12-DCA-d4 291 230 <br /> 116 60-140 <br /> rrogate 7'oluene-d8 249 250 100 60-140 <br /> rrogate 4-BF3 273 25 0 <br /> 109 60-140 f <br /> rnzene <br /> atory Control Sample(300117Prepared 08/]1/03 Analyzed 08/12/03 <br /> 199 050 ug/l 25 0 80 70-130 <br /> 188 050 25 0 <br /> 75 70-130 <br /> Methyl tert-butyl ether 193 2 0 250 <br /> 77 60-140 <br /> Wle 1 2-DCA-d4 25 1 250 100 60-140 <br /> e Toluene-d8 246 ZS 0 <br /> 98 60-140 <br /> Surrogate 4-BFB 261 11 250 <br /> 104 60-140 <br /> tlatrix,Spike(3080117-MSI) Source S308091-20 Prepared 08/11/03 Analyzed 08/12/03 <br /> 265 050 ugl] 25 0 ND 106 70-130 <br /> Toluene 255 050 11250 ND 102 70-130 <br /> thy/tert-butyl ether 285 20 25 0 ND 114 60-140 <br /> i rogate 12-DCA-d4 282 250 <br /> 113 60-140 <br /> Surrogate Toluene-d8 246 2.50 98 60-140 <br /> rrogate 4-BFB 27 0 25 0 108 60-140 <br /> atrix Spike Dup(3080117-MSDI) Source 5308091-20 Prepared 08/11/03 Analyzed 08/12/03 <br /> Benzene 249 050 ug/l 250 ND 100 70-130 6 25 <br /> luene 23 6 050 250 ND 94 70-130 8 25 <br /> thy]tert-butyl ether 27 0 20 250 ND 108 60-140 5 25 <br /> Surrogate 1,2-DCA-d4 272 2-50 109 60-140 <br /> rogate Toluene-d8 24311 <br /> 250 97 60-140 <br /> rogate 4-BFB 263 250 105 60-140 <br /> a Analytical- Sacramento The results in this repot t 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 95 of 117 <br />