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• ` <br /> Report Number: 39246 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date : 7/23/2004 <br /> Project Name : Tesoro 67080 <br /> Project Number: D003-007 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup. Sample Sample Analysis Date Percent Percent Percent Recov. Diff. <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov. Recov. Diff. Limit Limit <br /> TPH as Diesel Blank <50 1000 1000 720 768 ug/L M EPA 8015 7120104 72.0 76.8 6.43 70-130 25 <br /> Benzene 39257-02 <0.50 40.0 40.0 40.4 39.4 ug/L EPA 8260E 7119104 101 98.4 2.58 70-130 25 <br /> Toluene 39257-02 <0.50 40.0 40.0 40.4 38.8 ug/L EPA 8260B 7119104 101 97.0 4.02 70-130 25 <br /> Tert-Butanol 39257-02 <5.0 200 200 205 200 ug/L EPA 8260E 7119/04 103 100 2.45 70-130 25 <br /> Methyl-t-Butyl Ether 39257-02 <0.50 40.0 40.0 38.9 41.3 ug/L EPA 82606 7119104 97.2 103 5.96 70-130 25 <br /> Benzene 39290-01 <0.50 40.0 40.0 42.4 42.2 uglL EPA 82608 7121104 106 106 0.461 70-130 25 <br /> Toluene 39290-01 <0.50 40.0 40.0 42.3 41.6 uglL EPA 82608 7121104 106 104 1.74 70-130 25 <br /> Tert-Butanol 39290-01 <5.0 200 200 208 208 uglL EPA 82608 7121104 104 104 0.269 70-130 25 <br /> Methyl-t-Butyl Ether 39290-01 1.2 40.0 40.0 45.8 45.1 uglL EPA 8260B 7121104 112 110 1.62 70-130 25 <br /> Approved By: ja iff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />