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Sequoia 404 e ,CA lane <br /> Walnut Creek,CA 94598 <br /> 4 (925)988-9600 <br /> Analytical FAX equo labs.c 73 <br /> www.sequoialabs.com <br /> Gettler Ryan, Inc. -Dublin Project: Tosco <br /> 6747 Sierra Court Suite.I Project Number: Tosco# 11 195 Reported: <br /> Dublin CA,94568 Project Manager: Doug Lee 11-Mar-02 07:42 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical- Walnut Creek <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 2B28002- EPA 5030B P/T <br /> Matrix Spike(ZB28002-MS1) Source:W202365-03 Prepared&Analyzed: 06-Mar-02 <br /> Benzene 17.3 0.50 ug/l 20.0 ND 86 70-130 <br /> Toluene 18.8 0.50 20.0 ND 94 70-130 <br /> Ethylbenzene 19.9 0.50 20.0 ND 100 70-130 <br /> Xylenes(total) 58.6 0.50 60,0 ND 98 70-130 <br /> Surrogate:a,a,a-frifluoroiohrene 28,4 30.0 95 70-130 <br /> Matrix Spike Dup(2B28002-MSD1) Source:W202365-03 Prepared&Analyzed:06-Mar-02 <br /> Benzene 16.4 0.50 ug/l 20.0 ND 82 70-130 5 20 <br /> Toluene 18.3 0.50 20.0 ND 92 70-130 3 20 <br /> Bthylbenzene 17.8 0.50 " 20.0 ND 89 70-130 11 20 <br /> Xylenes(total) 59.2 0.50 60.0 ND 99 70-130 1 20 <br /> 1_" ; :;rogcrte:cr,a,a-Tivflerarntohrene 28.2 30.0 94 70-130 <br /> : {Iquoia Analytical- Walnut Creek The results in this report apply to the samples analyzed in accordance with the chain of <br /> j custody document. This analytical report must be reproduced in its entirety. <br /> 7of10 <br />