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404 N Wlget Lane <br /> 94598 <br /> Sequoia '"�'n"�C(925)988-9600 <br /> FAX(925)988-%73 <br /> Analytical www seQuolalabs a" <br /> Gettier Ryan,Inc -Dublin Project Tosco <br /> 6747 Sierra Court State J Project Number Tosco# 11194 Reported <br /> Dublin CA,94568 Project Manager Deanna L Haidmg 11 Apr-00 10 38 <br /> Volatile Organic Compounds by EPA Method 8240B- Quality Control <br /> Sequoia Analytical -Walnut Creek <br /> Reporting Spike Source a/oREC RPD <br /> Analyte Result Lunt Units Level Result %REC Lunits RPD Lint Notes <br /> Batch OC23010-EPA 5030B[Prn <br /> LCS(OC23010-BS2) Prepared&Analyzed 23-Mar-00 <br /> 1,1-Drchlorodhene 467 20 ugn 500 934 65-135 <br /> Methyl tent-butyl ether 499 20 500 996 70-130 <br /> Benzene 481 20 500 962 70-130 <br /> Trichloroethene 479 20 500 958 70-130 <br /> Tohmu 473 20 500 946 70-130 <br /> Chlorobowene 454 20 500 908 70-130 <br /> Surrogate Dlbromolluoo —dome Sao 500 100 50-150 <br /> Surrogate 1,1-Dtchlormetham-d l SO 0 SO 0 100 50.150 <br /> Surrogore Toluene-d8 490 Sao 9&0 50-150 <br /> Surrogate 4-BroonvAoroberaene 510 Soo 102 50-150 <br /> Matrix Spike(OC23010-MSI) Source W003306-01 Prepared&Analyzed 22-Mar-00 <br /> groroethme 446 20 ugfl 500 ND 892 60-140 <br /> yl tat-b I-aw 42.9 20 500 ND 858 60-140 <br /> Beene 4&9 20 500 ND 97 8 60-140 <br /> Tnohlorvathene 488 20 500 ND 97 6 60-140 <br /> Tohrene 486 20 500 ND 972 60-140 <br /> Chlorobenzene 475 20 500 ND 950 60-140 <br /> Surrogate Dtbromofhuoromerhane 490 Soo 9&0 50-150 <br /> Surrogate 1,1 Dichloroethmre-d4 530 500 106 50-150 <br /> Surrogate Toluene-d8 490 500 98.0 50-150 <br /> Surrogate 4-Bromoluorobenvene Sao Sao 100 SO-ISO <br /> Matrix Spike Dup(OC23010-MSD1) Source W003306-01 Prepared&Analyzed 22-Mar-00 <br /> 1,1-Drchlorvethme 471 20 ugll Soo ND 942 60-140 345 25 <br /> Methyl tat-butyl ether 459 20 500 ND 919 60-140 676 25 <br /> Barutiene 52.5 20 500 ND 105 60-140 710 25 <br /> Tnchlornathmm 517 20 500 ND 103 60-140 577 25 <br /> Tohwm 519 20 " 500 ND 104 60-140 657 25 <br /> Chlorobenzene 509 20 " 500 ND 102 60-140 671 25 <br /> Surrogate Drbromofluommethane Soo Soo 100 50-150 <br /> Surrogate 1,1 Dtehlor+oed"w-d4 510 Sao 104 50-150 <br /> Surrogate Toluene-d8 490 Soo 98.0 50-150 <br /> Surrogate 4-BromoAomberaene 490 50.0 9&0 50.150 <br /> Ola Analyte it-Walnut Creek The results in dhds report apply to the samples analyred in accordance with die AWrr of <br /> custody document Ms analydcal report must be reproduced in its entirety <br /> Page 16 of 21 <br />