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819 Sinker Ave Ste 6 ; <br /> Sequoia Sacramento,CA 5834 <br /> (916)92199600 <br /> Analytical www <br /> (916)921-0100 <br /> sequai slabs con <br /> 1 <br /> Gettler-Ryan-Dublin Protect Former Unocal 5098,Stockton,CA 5302592 <br /> 6747 Sierra Court,Ste J Protect Number N/A Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 03/10/03 17 17 <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 RAD Limit Notes <br /> Batch 3030099-EPA 5030B PIT ` J <br /> Blank(3030099-BLKI) Prepared 03/06/03 Analyzed 03/07/03 <br /> Surrogate Dibromofluoromethane 293 ug/1 250 117 70-130 1 <br /> Surrogate 1 2-DCA-d4 314 250 116 70-130 <br /> Surrogate Toluene-d8 279 250 112 70-130 <br /> Suri agate 4-BFB 249 250 100 70-130 <br /> Laboratory Control Sample(3030099-113SI) Prepared 03/06/03 Analyzed 03/07/03 <br /> Benzene 249 050 ugA 250 99 70-130 i <br /> Chlorobenzene 25 1 050 25 0 - 100 70-130 <br /> 1,1-Dichloroethene 23 0 050 250 92 70-130 <br /> Toluene 262 050 250 105 70-130 <br /> Tnchioroethene 21 0 050 250 84 70-130 <br /> Sur rogate 1 2-DCA-d4 287 250 115 60-140 <br /> Sur i ogate Dibromolluoromethane 26 7 250 107 70-130 <br /> Sur rogate 1 1-DCA-d4 287 250 175 70-130 <br /> Surrogate Toluene-d8 28.5 2.)0 114 70-130 <br /> Sur rogate 4-BFB 2.58 250 103 70-130 <br /> Matrix Spike (3030099-MSI) Source S302592-31 Prepared 03/06/03 Analyzed 03/07/03 _TT <br /> Benzene 258 050 ug/1 250 1 9 96 60-140 <br /> Chlorobenzene 22 5 - - 050-2 - 250 _ND__ 90 _60-140— -�r <br /> 1,1-Di chioroethene 234 050 250 ND 94 60-140 <br /> Toluene 23 6 050 250 ND 94 60-140 <br /> Trichloroethene _199- __ - 050 _ _ _250 ND 80_ _ 60-140 _ <br /> Stn rogate 1 2-DCA-d4 284 250 114 60-140 <br /> Surrogate Dibromolluoi omethane 269 250 108 70-130 - <br /> Sturogate 1 2-DCA-d4 284 15 0 114 70-130 <br /> Su,rogate Toluene-0 26 8 250 107 70-130 <br /> Sur rogate 4-BFB 25 1 250 100 70-130 ti <br /> t <br /> Sequoia Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with tine chair:0 <br /> custody document Unless otherwise stated results ate repot ted on a wet weight bast" <br /> This analytical report must be reproduced in its entiregp I s <br /> Page 124 of 126 <br /> 1 <br />