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Sequoia 819 Sinker Ave Ste 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX(916)921 0100 <br /> Q I www sequolalabs com <br /> ettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 5210010 <br /> Sierra Court,Ste J Project Number NIA Reported <br /> CA,94568 Project Manager Deanna L Harding 10/14/02 18 46 <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> ch 2100111 -EPA 5030B [P/T <br /> nk (2100I11-BLKI) Prepared&Analyzed 10/08/02 <br />'total Xylenes ND 050 ug/1 <br /> agate Dibromofluoromethane 286 250 114 70-130 <br /> Surrogate 1 2-DCA-d4 309 250 124 70-130 <br /> tgate Toluene-d8 275 250 110 70-130 <br /> ogate 4-BFB 27 7 250 111 70-130 <br /> oratory Control Sample(2100111-BS1) Prepared&Analyzed 1010810_2 <br /> J2Cne _- 285 050 ug/l4 25 0 114 -70-130 <br /> Whlorobenzene 245 050 250 <br /> 98 70-130 <br /> feichloroethene 280 050 250 112 70-130 <br /> ne 259 050 250 104 70-130 <br />'richloroethene 222 050 25 0 89 70-130 <br /> low Dibiomofluoromeihane 267 250 107 70-130 <br /> urrogate 1 2-DCA d4 302 250 111 70-130 <br /> agate Toluene-d8 275 230 110 70-130 <br /> _gate 4-BFB 278 250 111 70-130 <br /> Wrix Spike(2100111-MSI) Source 5210010-17 Prepared&Analyzed 10/08/02 <br /> ene 547 050 ug/1 25 0 33 87 60-140 <br /> .'robenzene 252 050 25 0 ND 101 60-140 <br /> i'loroethene. <br /> ichloroethene 292 050 250 ND 117 60-140 <br /> ne 389 050 250 1884 60-f40 <br /> 22 8 050 250 NO <br /> 90 60-140 <br />[gate DibromoJluoromethane 281 250 112 70-130 <br /> gate 12 DCA-d4 304 250 122 70-130 <br /> arrogate Toluene-d8 269 250 108 70-130 <br /> gate 4-BFB 279 250 112 70-130 <br /> r <br /> oia 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 reps oduced in its entirety <br /> Page 114 of 119 <br /> - - 1 <br />