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i <br /> 819 Striker Ave Ste 8 <br /> a— ) (916) 921 9 <br /> Sequoia Sacramento,CA 95834 <br /> Analytical FAX(916)921-0100 , <br /> Gettler-Rvan-Dublin Project Former Unocal 5098,Stockton,CA 5212135 <br /> 6747 Sierra Court,Ste J Project Number NIA Reported ' <br /> Dublin CA,94568 Project Manager Deanna L Harding 12/27/0214 14 <br /> Volatile Organic Compounds by EPA Method 8260B -Quality Control <br /> Sequoia Analytical -Sacramento <br /> Reporting Spike Source - %REC - RPD <br /> lAnalyte Result Limit Units Level Result %REC Limits RPD Limit Nates <br /> Batch 2120133-EPA 5030B[PIT] <br /> Matrix Spike(2120133-MSI) Source S212135-23 Prepared&Analyzed 12/09/02 <br /> Surrogate 1 2-DCA44 260 ug/1 250 104 60-140 <br /> Surrogate Dibromofluoromethane 25 9 2S 0 104 70-130 <br /> Surrogate 12-DCA-d4 260 250 104 70-130 <br /> Surrogate Toluene-d8 2S9 250 104 70-130 <br /> Surrogate 4-BFB 299 250 110 70-130 <br /> Matrix Spike Dup(2124133-MSD1) Source 5212135-23 Prepared&Analyzed 12/09/02 <br /> Benzene 33 5 0 50 ug/l 25 0 ND 134 60-140 0 3 25 <br /> Methyl tert-butyl ether 29 7 20 25 0 ND 119 60-140 3 25 <br /> Chlorobenzene 21 8 050 25 0 ND 87 60-140 7 25 <br /> 1,1-Dichloroethene 31 6 050 25 0 ND 126 60-140 1 25 <br /> Toluene 25 8 0 So 25 0 ND 103 60-140 6 25 <br /> Trichloroethene 234 050 25 0 ND 94 60-140 3 25 <br /> Surrogate 12-DCA-d4 281 250 112 60-140 <br /> Surrozare Dibromolluoromethane 276 250 110 70-130 <br /> Surrogate 1 2-DCA-d4 281 250 112 70-130 <br /> Surrogate Toluene-d8 25 8 725 0 ---103-70--130 T <br /> _ Surrogate 4-BFB 302 _ -_ 250 _ 121 70-130 <br /> - Batch 2120173-EPA 5030B [PIT)---- - - - - ----- -- - - - - <br /> Blank(2120173-BLKI) Prepared 12/11/02 Analyzed,„12112102 <br /> Benzene ND 0 50 ug1l <br /> _-_ -Bromobezene-- - -�- -- --- �` ND - __0 50 - <br /> Tert-butyl alcohol ND 100 - - <br /> Bromochloromethane ND 0 50 " <br /> Methyl tort-butyl ether ND 2 0 " <br /> Bromodichloromethane ND 0 50 " <br /> Dt-isopropyl ether ND 2 0 <br /> Bromoform ND 0 50 " <br /> Ethyl tert-butyl ether ND 2 0 " <br /> Bromomethane ND 10 <br /> Teri-amyl methyl ether ND 2 0 " <br /> _ <br /> -Ethanol_ _ _ _ ww __ _ ND -- 500 -- <br /> n-Butylbenzene ND 0 50 <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis 77ris analytical report must be reproduced in its entirety <br /> 90 of 102 <br />