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404 N Wlget Lane <br /> Walnut creek,reek, 94598 <br /> -9600 <br /> 4 4D <br /> (925)9898 8-9600 <br /> FAX(925)988-%73 <br /> �„� Analytical wwwsequolalabs com <br /> ld <br /> Gettler Ryan,%c -Dublin Project Tosco <br /> 6747 Sierra Court Suite J Project Number Tosco#11192 Reported <br /> Dublin CA,94568 Project Manager Doug Lee 05-Jan-01 08 Ol <br /> Volatile Organic Compounds by EPA Method 8260B - Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lunits RPD Lirnit Notes <br /> Batch OL18009-EPA 5030B [PIT] <br /> LCS(OL18009-BSI) Prepared 13-Dec-00 Analyzed 13-Dec-01 <br /> 1,1-Dichloroethene 640 20 ug/1 700 914 65-135 <br /> Methyl Cert-butyl ether 508 20 500 102 65-135 <br /> Benzene 620 20 " 500 124 70-130 <br /> Trichloroethene 606 20 500 121 70-130 <br /> Toluene 612 20 500 122 70-130 <br /> Chlorobenzene 630 20 500 126 70-130 <br /> Surrogate Dibromofluoromethane 470 " 500 940 50-150 <br /> Surrogate 1,2-Dich1oroedxm-d4 470 " 500 940 50-150 <br /> Surrogate Toluene-d8 Sl 0 " Soo 102 50-150 <br /> Surrogate 4Brom0fluorobewene 480 Soo 96.0 50-150 <br /> LCS(OL18009-BS2) Prepared&Analyzed 18-Dec-0O <br /> rCWorodhene 590 20 ug/1 700 843 65-135 <br /> yl tit-butyl ether 450 20 500 900 65-135 <br /> Benzene 580 20 500 116 70-130 <br /> Trichloroethene 550 20 " 500 110 70-130 <br /> Toluene 560 20 500 112 70-1.30 <br /> Chlorobemene 550 20 500 110 70-130 <br /> Surrogate Dibromofluoromethane 480 Soo 960 50.150 <br /> Surrogate 1 2-Drehlorneilrrne-d4 4&0 SO 0 960 50-150 <br /> Surrogate Toluene-d8 490 500 980 50-150 <br /> Surrogate 4-Bromofhiorobenzene 500 Soo 100 50-150 <br /> Matrix Spike(OL18009-MSI) Source W012299-06 Prepared&Analyzed 18-Dec-00 <br /> 1,1-Dtchloroethene 570 20 ug4 700 ND 814 60-140 <br /> Methyl tort-butyl ether 460 20 500 ND 920 60-140 <br /> Benzene 580 20 500 ND 116 60-140 <br /> Trichloroethene 570 20 " 500 ND 114 60-140 <br /> Toblew 600 20 500 ND I20 60-140 <br /> Chlorobenzene 560 20 500 ND 112 60-140 <br /> Sw7ogate Dibromofluoromethane 4&0 SO 0 960 50-150 <br /> Surrogate 1 2-Dichlornedwm-d4 490 Soo 980 Sal SO <br /> Surrogate Toluene-d8 480 500 9610 Sa150 <br /> Surrogate 4-Bromofluorober¢ene 470 500 940 50-150 <br /> uoia Analytical-Walnut Creek The results in flus report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirety <br /> Page 19 of 27 <br />