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Sequoia <br /> 819 Sutker Ave Ste 8 <br /> jSequoia Sacramento,CA 95834 <br /> Analytical f (916)921-9600 <br /> FAX (916)921-0]00 <br /> Gettler-Ryan-Dublin Project Former Unocal 0187,Stockton,CA 5211332 <br /> 6747 Sierra Court,Ste J .Project Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/02 17 49 <br /> Casoline\BTEXIOxygenates by EPA method 8260B-Quality Control <br /> Sequoia Analytical - Sacramento <br /> " Reporting- Spike - Source %REC RPD <br /> IAnalyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2110265-EPA 5030B JP/T] <br /> Blank(2110265-BLK1) - - ' Prepared&Analyzed 11/18/02 <br /> Benzene ND 0 50 ugll <br /> Toluene ND 0 50 " <br /> Ethylbenzene ND 0 50 " <br /> Xylenes(total) ND 0 50 " <br /> Methyl tert-butyl ether ND 0 50 " <br /> Gasoline(C6-C10) ND 50 " <br /> Surrogate 1 2-DCA-d4 22 6 15 0 90 60-140 <br /> Surrogate Toluene-d8 274 25 0 110 60-140 <br /> Sur r agate 4-BFB 14 7 15 0 99 60-140 <br /> Laboratory Control Sample(2110265-BSI) Prepared&Analyzed 11/18/02 <br /> Benzene 121 050 ug/l 13 4 90 70-130 T . <br /> Toluene 705 050 81 0 87 70-130 <br /> Methyl tert-butyl ether 209 0 50 21 8 96 60-140 <br /> Gasoline(C6-C10) 1060 50 1100 96 70-130 <br /> Surrogate -1-1-DCA-d4 24-7 25 0 99=60-140= — <br /> Surrogate Toluene-d8 15 7 15 0 103 60-140 <br />�SWr'ogate 4=BFB-- -- —15-5` "- —25 0--- 102=60=140=— ----- --_— <br /> Matrix Spike 2110265-MS7 Source 5271132-02 Prepared&Analyzed 11/18/02 <br /> Benzene 11 9 0 50 ug/l 13 4 ND 89 70-130 <br /> Toluene 708 050 81 0 ND 87 70-130 <br /> Methyl tert-butyl ether 19 5 0 50 21 8 ND 89 60-140 <br /> Gasoline(C6-C10) 706 50 1100 ND 64 60-140 <br /> Surrogate 12-DCA-d4 24 8 15 0 99 60-140 <br /> Surtogate Toluene-d8 15 7 25 0 103 60-140 <br /> Surrogate 4-BFB 264 25 0 106 60-140 <br /> Sequoia A.nalyht al-Sacramento The results in this report apply to the samples analyzed in accordance with the ch <br /> of custody document Unless otherwise stated,results are reported on a wet weight <br /> bases This analytical report must be reproduced in its entirety <br /> 32 of 41 <br />