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Sequoia 819 Sinker Ave Ste 8 <br /> Sacramento CA 95834 <br /> Analytical (916)921-4600 <br /> FAX(9I6)923-010D <br /> www sequoialabs com <br /> 5 <br /> ettler-Ryan-Dublin Prosect Unocal 5098,Stockton,CA 5210010 <br /> Sierra Court,Ste 3 Project Number N/A Reported <br /> m CA,94568 Protect 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 /> tch 2100088-EPA 5030B (P/T] <br /> atrix Spilce(2100088-MSI) Source 5210010-12 Prepared 10/05/02 Analyzed 10/06/02 <br /> trix Spike Dup(2100088-MSD1) Source S210010-12 Prepared 10/05/02 Analyzed 10/06/02 <br /> Wzene 280 050 ug/1 250 078 109 60-140 7 25 <br /> Chlorobenzene 243 050 250 ND 97 60-140 8 25 <br /> I-D'C"Oroe'hene 27 1 050 250 ND 108 60-140 7 25 <br /> ene 260 050 250 ND 103 60-140 9 25 <br /> chloro'thene 215 050 250 ND 86 60-140 7 25 <br /> AM- <br /> rroga4e Dibromofuoi omethane 263 250 105 70-130 <br /> rugate 1 2-DC.4-d4 281 250 113 70-130 <br /> Surrogate Toluene-d8 283 250 113 70-130 <br /> tog-re 4-BFB 289 250 116 70-130 <br /> EUtJ2100111 -EPA 5030EJP/TJ <br /> 100111-BLKI) Prepared&Analyzed 10/08/02 <br /> Benzene ND 050 ug/1 <br /> tobenzene ND 0 50 " <br /> ochloromethane ND 050 " <br /> o.odichloromethane ND 050 " <br /> 9intnoform ND 0 50 <br /> it"methane ND 10 <br /> tt tylbenzene ND 0 50 " <br /> ec-Butylbenzene ND 0 50 " <br /> tButylbenzene ND 050 <br /> on tetrachloride ND 0 50 <br />'hlorobenzene ND 050 " <br /> troethane ND 0 50 <br /> rofonn ND 0 50 " <br /> Woromethane ND 0 50 " <br /> lorotoiuene ND 050 " <br /> IOTDtOItlene 1'D 0 50 ' <br /> h rom"hloMmethane ND 0 50 <br />,t"romoethane(EDB) ND 0 50 <br /> momethane ND 050 " <br /> ibromo-3-chloropropane ND 1 0 <br /> 0. <br /> oia Analytical- Sacramento The results in this repol t apply to the samples analyzed in accoi dance 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 112 of 119 <br />