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Sequoia 819 Striker Ave Sic 9 <br /> Sacramento CA 95834 <br /> Analytical (916)921-9600 <br /> FAX(916)921 0too <br /> WWW sequoraiabs com <br /> tier-Ryan-Dublin Project Former Unocal 5098,Stockton,CA <br /> 6747 Sierra Court, Ste J S308091 <br /> Project Number N/A Reported <br /> Dublin CA,9456$ Project Manager Deanna L Harding 08/20/03 ]6 56 <br /> Gasohne113TEMOxygenates by EPA method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> (atch <br /> Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> 30801160-EPA 503013 P/T <br /> Blank(3080160-111K1) Prepared R,Anafyxed 08/18/03 <br /> enzene ND 050 ug/1 <br /> Toluene ND 050 <br /> hylbenzene ND 050 " <br /> lens(total) ND 050 ° <br /> ethyl tent-butyl ether ND 20 „ <br /> rogate 1,2-DCA-d4 261 250 rrogate Toluene-d8 105 60-140 k <br /> 246 2.50 98 60-140 <br /> rrogate 4-BF8 263 <br /> 250 <br /> 105 60-140 <br /> Laboratory Control Sample(3080160BSI) Prepared&Analyzed 08/18/03 <br /> rtzene <br /> 249 0 50 ugll 25 0 <br /> 100 70-130 <br /> luene <br /> 252 G50 250 <br /> Methyl tent-butyl ether 101 70-130 <br /> 26] 2 0 250 ]04 150-140 <br /> P�te <br /> 12-DCA-d4 254 250 102 60-140 <br /> ate Toluene-d8 253 250 101 60440 <br /> Surrogate 4-BFB 258 250 <br /> 103 60-140 <br /> Matrix Spike(3080160-MSI) Source S308091-02 Prepared 08/18/03 Analyzed 08/19/03 <br /> zene 264 050 ug/1 250 ND 106 70-130 <br /> Toluene 25 7 050 250 ND 103 70-130 <br />*thy]tent-butyl ether 253 20 250 ND t 0] 60-140 <br /> rogate 1 2-DCA-d4 251 250 <br /> 100 60-140 <br /> Surrogate Toluene-d8 254 250 <br /> 102 60-140 <br /> rogate 4-BFB 250 250 <br /> 100 60-140 <br /> trix Spike Dup(3080160-MSDi) Source 5308091-02 Prepared 08/18/03 Analyzed 0$/19/03 <br /> Benzene 25 7 0 50 ug/l 25 0 ND 103 70-130 3 25 <br /> fthyl <br /> ne 24 2 0 50 25 0 ND 97 70-130 6 25 <br /> teri-butyl ether 258 20 25 0 ND 103 60-140 2 25 <br /> Surrogate 1,2-DCA-d4 260 250 <br /> 104 60-140 <br /> rogate Toluene-d8 252 250 101 60-140 <br /> rogate 4-BFB 261 250 104 60-140 <br /> i <br /> quota Analytical - Sacramento The results in tilts report apply to the samples analvzed in accordance with the chain of <br /> custody document Unless otherwise stated,results are reported an a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> r <br /> Page 97 of 117 <br />