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819 Striker Ave Ste 8 <br /> Sequoia Sacramento CA 99830 <br /> (916)921 9609 <br /> i <br /> FAX 921 s0140 <br /> Analytical www sequoialab <br /> coin <br /> Gettler-Ryan-Dublin - Project Former Unocal 5098,Stockton,CA 5308091 <br /> 6747 Sierra Court, Ste 3 Project Number N/A Reported <br /> Dublin CA,94568 _ Project Manager Deanna 1.. Harding _ _ _ 08/20/03 16 56 <br /> i <br /> - --Volatile Organic Compounds by EPA Method 8260B - Quality Control - <br /> ` Sequoia Analytical - Sacramento` - - <br /> Reporting i Spike Source %REC RPD <br /> Analyte Result Limit units Level Result %REC Limits RPD Limit Notes <br /> Batch 3480160- EPA 5030B (PIT) <br /> Laboratory Control Sample (3080160-BSI) Prepared&Analyzed 08/18/03 <br /> Benzene 249 050 ugA 250 100 70-130 <br /> Chlorobenzene 248 050 250 99 70-130 <br /> 1,1-Dichloroethene 247 050 25 0 99 70-130 <br /> Toluene 252 0 50 250 101 70-130 <br /> Trichloroethene 214 0 50 25 0 86 70-130 <br /> Surrogate 1 1-DCA-d4 - 25 4 - - r 250 -102 60-140, n_ <br /> Surrogate Dibromofluoromethane 25 3 250 101 70-130 <br /> Surrogate 12-DCA-d4 25 4 15 0 142 70-130 <br /> Sur rogate Toluene-d8 f _ y LL23 3 ` -Y T25 0 1 701 70-130' <br /> Surrogate 4-BFB 25 8 25 0 103 70-130 <br /> Matrix Spike(3080160-MS1) _ - Source 5308091-02 Prepared 08/18/03 -Analyzed 08/19/03 - <br /> Benzene 264 050 ug/l 25 0 ND 106 60-140 <br /> Chlorobenzene 25 0 0 50 25 0 ND 100 60-140 <br /> 1,1-Diehloroethene 266 050 25 0 ND R 106 60-140 <br /> Toluene 25 7 0 50 25 0 ND 103 60-140 <br /> Tnehloroethene 21 7 050 250 ND 87 60-140, <br /> Surrogate 12-DCA-d4 _ - 25 1 2.50 100 60-140 -- -- -- - <br /> Sw rogate Dibromofluoromethane 251 25 0 100 70-130 <br /> i_ <br /> Surrogate 11-DCA-d4 251 250 100 70-130 <br /> Surrogate Toluene-d8—= _ _T__--_ _ 25 4 __ ^- _ _ _T 25 0 _ __ _,102_ F_70-130 <br /> Surrogate 4-BFB 25 0 250 100 70-130 <br /> Matrix Spike Du (3080160-MSDI) Source 5308091-02 prepared 08/18/03 Analyzed 08/19/03 <br />_Benzene�___. _ ._---_ -— ­-.,.-25 7— _-0 50--ugil—m.,..._25 0�_a.....ND- _ 103 60-140 ...3 25 <br /> Chlorobenzene 24 0 0 50 25 0 ND 96 60-140 4 25 <br /> 1,1-Dichloroethene - 245 - 050 25 0 ND 98 60-140 8 25 <br /> Toluene 242 050 25 0 ND 97 60-140 6 25 <br /> Trichloroethene _ 208 0 50 25 0 ND 83 60-140 4 - 25 <br /> Surrogate 12-DCA-d4 26 0 25 0 104 60-140 —� <br />—Surrogate Dibromofluoromethane —25 7 —"--25 0— -103---70-130 <br /> Surrogate 1 2-DCA-d4 260 " 25 0 104 70-130 <br /> Sm rogate Toluene-d8 252 25 0 101 70-130 <br /> Surrogate 4-BFB 261 25 0 104 70-130 <br /> Sequoia Analytical - Sacramento The results in this report apply to the samples analyzed in accordance with the chain o <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 110 of 117 ' <br />