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Sequoia 819 Striker Ave Ste 6 <br /> Sacramento,CA 95834 <br /> Analytical (916)921 9600 <br /> FAX(R 16)421-01{14 <br /> www sequoialabs conn <br /> ettler-Ryan-Dublin Project Unocal 5098,Stockton,CA 5210010 <br /> Sierra Court, Ste J Project Number NIA Reported <br /> in 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 /> Reponmg Spike Source %REC RPD <br /> ralyte:7__ Result Limit Units Level Result %REC Limits RFD Limit Notes <br /> ich 2100083-EPA 5030B JP/TJ <br /> trix Spike(2100083-MSI) Source 5210070-28 Prepared&Analyzed 10/04/02 <br /> Benzene 287 050 ug/1 25 0 20 107 60-140 <br /> tDichloroethene <br /> robenzene 25 6 050 25 0 ND 101 60-140 <br /> 278 050 25 0 ND 11 1 60-140 <br /> Toluene 26 9 050 250 ND 106 60-140 <br /> 11 hloroethene 226 050 25 0 ND 89 60-140 <br /> Surrogate DibromoJluoromethane 259 250 104 70-130 <br /> .gate 1 2-DC,4-d4 281 250 112 70-130 <br /> rogate Toluene-d8 171 " 250 109 70-130 <br /> Surrogate 4-BFB 161 250 104 70-130 <br /> t,t_rlx Spike Du (2100083-MSD1) Source 5210010-28 Prepared&Analyzed 10/04/02 <br /> Benzene 274 050 ug/] 25 0 2 0 102 60-140 5 25 <br /> ben <br /> nzene 23 9 050 25 0 ND 94 60-140 7 25 <br /> 1oroethene 26 0 050 25 0 ND 104 60-140 7 25 <br /> o. e 25 0 050 25 0 ND 99 60-140 7 25 <br /> Trichloroethene 21 1 050 25 0 ND 83 60-140 7 25 <br /> It I <br /> A ogate Dtbromofluoromethane 16 0 250 104 70-130 <br /> lurrogate 1 1-DCA-d4 18 4 250 114 70.130 <br /> agate Toluene-d8 278 FF 25 0 111 70-130 <br /> .gate 4-BFB 279 25 0 112 70-130 <br />#—Ch 2100085-EPA 5030B JP/TlI - ., ._... _ <br /> dank(2100085-BLK1) Prepared&Analyzed 10/05/02 <br /> t.eric ND 050 ug/I <br /> .benzene ND 050o chloromethane ND 050 " <br /> omodichloromcthane ND 050 <br /> oform ND 050 <br /> omethane ND 10 <br /> Butylbenzene ND 050 " <br /> tutylbenzene ND 050 <br /> utylbenzene ND 050 <br /> arbors tetrachloride ND 050 " <br /> lu— <br /> ola 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 reproduced in its entirety <br /> Page 106 of 119 <br />