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819 Striker Ave Ste 8 <br /> KD (916)Sequoia Sacramento CA 958348 921 9600 <br /> Analytical FAX(916)921 0104 <br /> www sequcialabs com <br /> Gettler-Ryan-Dublin Project Former Unocal 5098,Stockton,CA 5308091 - <br /> 6747 Sierra Court, Ste J Project Number N/A Reported <br /> Dublin CA, 94568 _ Project Manager Deanna L Harding _ 08/20/03 16 56_ <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 Totes <br /> Batch 30801.17-EPA 50308 1P/T1 <br /> Laboratory Control Sample(3080117-BSI) Prepared 08/11/03 Analyzed 08/12/03 <br /> Benzene 199 050 ug/1 250 - _ 80 70-130 — <br /> Chlorobenzene 188 050 250 75 70-130 <br /> 1,1-Dichloroethene 207 050 25 0 83 70-I30 <br /> Toluene 188 050 25 0 75 70-130 <br /> Trichloroethene 23 2 050 250 93 70-130 <br /> Surrogate 1,2-13C,444 251 250 IOD 60-140 <br /> Surrogate Dibromofluoromethane 261 250 104 70-130 <br /> Surrogate 1 2-DCA-d4 251 250 100 70-130 <br /> Surrogate Toluene-d8 246 250 98 70-130 Y <br /> Surrogate 4-BFB 261 250 104 70-130 <br /> Matrix Spike (3080117-MSI) _ - Source 5308091-20- Prepared 08/11/03 Analyzed 08/12/03 <br /> Benzene 265 050 ug/l 25 0 ND 106 60-140 <br /> Chlorobenzene 25 5 050 25 0 ND 102 60-140 k <br /> 10-Dichloroethene 272 050 25 0 ND 109 60-140 <br /> Toluene 25 5 050 25 0 ND 102 60-140 r <br /> Tnchloroethene 22 4 050 25 0 ND 90 60-140 <br /> r Surrogate 1-2-DCA=d4 - 28 2--"-25 0 113 64-140 <br /> Surrogate Dibromofluoromethane 256 25 0 102 70-130 <br /> Surrogate 1 2-DCA-_d4_ - _— 28 2 - 15 0� - -_- 113 70-130 - <br /> Surrogate Toluene-d8 24_6_ 250 --98- _ 70-130 <br /> Surrogate 4-BFB - --T 270- T 250 F- -_ - 108 70-130 T <br /> Matrix Spike Dup(3080117-MSD1) Source 5308091-20 Prepared 08/11/03 Analyzed 08/12/03 <br /> 4,24 9- „_0 50 -ug/l_- __25 0... - ND,-..- 100 _ 60-140 6 - 25-- <br /> Chlorobenzene 23 7 0 50 25 0 ND 95 60-140 7 25 <br /> ],i-Dichloroethene 25 2 0 50 25 0 ND 101 60-140 8 25 ' <br /> Toluene 236 0 50 25 0 ND 94 60-140 8 25 <br /> Trichloroethene __ 208 0 50 250- -ND- 83- 60-140 7 25 - <br /> Sui rugate 1 2-DCA-d4 272 15 0 109 60-140 <br /> Surrogate Dibromofluoromethane-- - - —250— -25 0---100--70-130------- - - <br /> Surrogate 1,2-DCA-d4 272 250 109 70-130 <br /> Surrogate Toluene-d8 243 250 97 70-130 <br /> Surrogate 4-BFB 263 250 105 70-130 <br /> Sequoia 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 oasts <br /> This analviical report must be reproduced in its entirety <br /> Page 104 of 117 ' <br />