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Report Number: 37432 <br /> o QC Report: Matrix Spike/Matrix Spike Duplicate Date: 03/99/2004 <br /> Project Name : Tesoro 67080 <br /> Project Number: <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 918 769 ug/L M EPA 8015 3114104 91.8 76.9 17.7 70-130 25 <br /> Benzene 37458-02 <0.50 40.0 39.8 40.1 39.9 ug/L EPA 8260B 3118104 100 100 0.121 70-130 25 <br /> Toluene 37458-02 <0.50 40.0 39.8 40.6 41.0 ug/L EPA 8260B 3118104 101 103 1.51 70-130 25 <br /> Tert-Butanol 37458-02 16 200 199 226 222 ug/L EPA 8260B 3118104 105 103 1.64 7D-130 25 <br /> Methyl-t-Butyl Ether 37458-02 <0.50 40.0 39.8 40.3 40.3 ug/L EPA 8260B 3118104 101 101 0.214 70-130 25 <br /> Benzene 37461-D5 <0.50 40.0 40.0 38.1 37.8 ug/L EPA 82606 3116/04 95.3 94.6 0.728 70-130 25 <br /> Toluene 37461-05 <0.50 40.0 40.0 39.4 39.2 ug1L EPA 82608 3116/04 98.6 98.0 0.578 70-130 25 <br /> Tert-Butanol 37461-05 <5.0 200 200 199 194 ug/L EPA 8260B 3116104 99.5 96.9 2.70 70-130 25 <br /> Methyl-L-131 rtvl Ether 37461-OC, 100 40.0 40.0 145 144 ug! EPA 8260B 3116104 107 105 1.66 70-130 25 <br /> d <br /> Ls, <br /> n <br /> � 3 <br /> c Approved By: J.1 I <br /> N KIFF ANALYTICAL, LLC , I <br /> 2795 2nd St,Suite 300 Davis,CA 95616 530-297-4800 <br /> 0 <br />