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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> (916)921-9600 <br /> FAX 00L 1%0Analytical www.sequoialabs.com <br /> LKleinfelder-Stockton Project: Fresno Oxygen 5305129 <br /> 2825 East Myrtle Street Project Number: 30082.E01 Reported: <br /> Stockton CA,95205 Project Manager: Joe Zilles 05/13/03 18:02 <br /> LDiesel Hydrocarbons by DHS LUFT - Quality Control <br /> Sequoia Analytical- Sacramento <br /> LReporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> LBatch 3050129-EPA 3550B <br /> Blank(3050129-BLKl) Prepared: 05/08/03 Analyzed: 05/12/03 <br /> Diesel Range Organics(C10-C28) ND 2.0 mg/kg <br /> LSurrogate:Octacosane 0.779 0.667 117 50-150 <br /> Laboratory Control Sample(3050129-BS1) Prepared:05/08/03 Analyzed:05/12/03 <br /> Diesel Range Organics(C10-C28) 20.1 2.0 mg/kg 16.7 120 60-140 <br /> Surrogate:Octacosane 0.695 0.667 104 50-150 <br /> Matrix Spike(3050129-MS1) Source:S305078-01 Prepared:05/08/03 Analyzed: 05/12/03 <br /> L Diesel Range Organics(C 10-C28) 10100 1000 mg/kg .16.7 11000 NR 50-150 HC-12, <br /> QM-4X <br /> Surrogate:Octacosane 377 0.667 NR 50-150 S-02 <br /> LMatrix Spike Dup(3050129-MSD1) Source:5305078-01 Prepared: 05/08/03 Analyzed: 05/12/03 <br /> Diesel Range Organics(C 10-C28) 10500 1000 mg/kg 16.7 11000 NR 50-150 4 50 HC-12, <br /> QMAX <br /> Surrogate:Octacosane 435 0.667 NR 50-150 S-02 <br /> L <br /> L <br /> L <br /> L <br /> L - <br /> Sequoia Analytical-Sacramento The results in this 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 /> Ld', Page 7 of 9 <br />