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19 <br /> Sequoia Bram nto Ave 956 4 <br /> Sacramento CA 95634 <br /> Analytical 1 D <br /> (916)921-9640 <br /> FAX(916)92]-0100 <br /> www sequaialabs cam <br /> ettl SlRyan- Dublin Protect Former Unocal 5098,Stockton,CA 5308091 <br /> 6747 5terra Court,Ste J Prosect 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 /> Ja tete Result Limit Units Level Rcsult %REC Limits RPD Limit Nates <br /> Batch 3080141 -EPA 50308JP/TJ <br /> aboratory Control Sample(3080141-SSl) Prepared 0$/I2/03 Analyzed 08/13/03 <br /> enzene 25 8 0 50 1.19/1 250 103 70-130 <br /> Chlorobenzene 250 050 25 0 100 70-130 <br /> -Dichloroethene 262 0 50 i' 250 105 70-130 <br /> luene 249 050 250 100 70-130 <br /> Tnchloroethene 217 050 250 87 70-130 <br /> rrogate 1 2-DCA-d4 275 2.50 110 66-140 11} <br /> rrogate Dibrornofluorom ethane 265 250 106 70-130 I� <br /> ur rogate 1,2-DCA-d4 <br /> 275 250 110 70-130 h <br /> Surrogate Toluene-d8 249 250 100 70-130 <br /> rrogate 4-BFB 277 250 111 70-130 <br /> Atrix Spike(3080141-MSI) Source S308091-30 Prepared 08/12/03 Analyzed 08/13/03 <br /> Bef0a 254 050 ug/1 250 ND--1 02 60-140 <br /> "zene 242 050 250 ND 97 60-140 <br /> tchloroethene 257 050 25 0 ND 103 60-140 <br /> Toluene 246 050 250 ND 98 60 140 <br /> chloroethene 21 6 050 25 0 ND 86 60-140 <br /> rrogate 1 2-DCA-d4 259 250 104 60-140 <br /> Surrogate Dibromofluoromethane 249 250 100 70-130 <br /> Irrogate 1 2-DCA-d4 259 250 104 70-130 <br /> rrogate 7'oluene-d8 24 7 250 99 70-130 <br /> rrogate 4-BFB 263 250 105 70-130 <br /> Iatrix Spike Du (3080141-MSDI) Source S308091-30 Prepared 08/12/03 Analyzed 08/13!03 <br /> nzene 247 050 ug/1 25-OND 99 60-140 3 25 <br /> lorobenzene 23 5 050 25 0 ND 94 60-140 3 25 <br /> 1 1-Dichloroethene 25 8 0 50 250 ND 103 60-140 04 25 <br /> t-e-r <br /> 23 2 050 25 0 ND 93 60-140 6 25 <br /> hloroethene 21 2 050 25 0 ND 85 60-140 2 25 <br /> Surrogate 1 2-DCA-d4 268 250 107 60-140 <br /> rogate Dibromofluorontethane 252 2-50 101 70-130 <br /> rogate 12-DCA-d4 268 250 107 70-130 <br /> Surrogate Toluene-d8 246 250 98 70-130 <br /> Vie 4-BFB 284 25 0 114 70-130 <br /> to Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document Unless otherwise stated r esults are reported on a wet weight basis <br />' This analytical report must be reproduced to its entirety <br /> Page 107 of 117 <br />