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19 <br /> ker <br /> Sequoia 8ramento,CA 5834 <br /> Ste 9 <br /> Sacramento,CA 95834 <br /> "� Analytical (916921-0100 <br /> FAX(916))423-9100 <br /> www scquolalabs com <br /> Gettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 5210010 <br /> Sierra Court, Ste 1 Project Number N/A Reported <br /> m CA,94568 Project Manager Deanna L Harding 10/14/02 18 46 <br /> Gaso11ne1BTEX\Oxygenates by EPA method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Analyte Reportmg Spike Source %REC RPD <br /> Result Limit Units Level Result %REC Limas RPD Limit Notes <br /> Match 2100088- EPA 50308 JPITJ <br /> atrix Spike Dup(2100088-MSDI) Source 5210010-12 Prepared 10/05/02 Analyzed 10/06/02 <br /> t3' y <br /> ltert-butyl ether 259 050 ug/l 250 ND 104 60-140 4 25 <br /> zene280 050 25 0 078 109 70-130 7 25 <br /> uene 260 050 25 0 ND 103 70-130 9 25 <br /> frogate Toluene-d8 183 250 113 60-140 <br /> gate 4-BFB 289 250 116 60-140 <br /> Surrogate 12-DCA-d4 181 2.50 113 60-140 <br /> Itch 210011.1 -EPA 5030B1PIT <br /> nk(2100111-BLKI) Prepared&Analyzed 10/08/02 <br /> -butyl alcohol ND 50 ug/l <br /> ethyl tert-butyl ether ND 050 " <br /> -iso ropyl ether ND 050 " <br /> Wbutyl ether ND 0 50 " <br /> - yl methyl ether ND 050 " <br /> 1,2-Dichloroethane ND 050 " <br /> ibromoethane(EDB) ND 050 <br /> UDric <br /> ND 050 " <br /> Ethylbenzene ND 050 " <br /> luene ND 050 " <br /> enes(total) ND 050 " <br /> ogate Toluene-d8 27 5 250 110 60-140 <br /> r0 <br /> agate 4 BFB 17 7 250 111 60-140 <br /> Surrogate 12-DCA-d4 309 250 114 60-140 <br /> oratory Control Sample(2I0011I-BSI) Prepared&Analyzed 10/08/02 <br /> 4ethyl tert-butyl ether 308 050 ug/l 250 123 60-140 <br /> zene 28 5 050 250 114 70-130 <br /> ene 25 9 0 SD 25 0 104 70-130 <br /> agate Toluene-d8 27.5 15 0 110 60-140 <br /> agate 4-BFB -778 230 111 60-140 <br /> ogate 12-DCA-d4 302 250 121 60-140 <br /> nota Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> . custody document Unless otherwise stated r esults ar a reported on a wet weight basis <br /> This anafytical report must be reproduced in its entirety <br /> Page 98 of l 19 <br />