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Report Number : 4'i�5 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date : 1/20/2005 <br /> Project Name : Tesoro 670$0 <br /> Project Number: D003-007 <br /> Duplicate Spiked <br /> Duplicate SpikedSpiked 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 951 819 ug/L M EPA 8015 1118105 95.1 81.9 15.0 70-130 25 <br /> Benzene 41945-01 <0.50 40.0 40.0 40.0 37.8 ug/L EPA 8260B 1114/05 99.9 94.6 5.47 70-130 25 <br /> Toluene 41945-01 <0.50 40.0 40.0 38.1 34.9 ug/L EPA 8260B 1114/05 95.3 87.2 8.80 70-130 25 <br /> Ter#-Butanol 41945-01 <5.0 200 200 213 195 ug/L EPA 8260B 1114105 106 97.6 8.75 70-130 25 <br /> Methyl-t-Butyl Ether41945-01 11 40.0 40.0 51.3 48.3 ug/L EPA 8260B 1114105 99.8 92.3 7.87 70-130 25 <br /> Benzene 41945-03 <0.50 40.0 40.0 39.2 39.0 ug/L EPA 8260E 1115/05 98.1 97.6 0.494 70-130 25 <br /> Toluene 41945-03 <0.50 40.0 40.0 41.7 40.9 ug/L EPA 8260E 1115105 104 102 2.00 70-130 25 <br /> Tert-Butanol 41945-03 <5.0 200 200 206 211 ug/L EPA 8260B 1115105 103 105 2.20 70-130 25 <br /> Methyl-t-Butyl Ether 41945-03 <0.50 40.0 40.0 33.6 33.4 ug/L EPA 8260E 1115105 84.0 83.4 0.626 70-130 25 <br /> Benzene 41958-06 <0.50 40.0 40.0 38.8 38.0 ug/L EPA 8260E 1/15105 96.9 94.9 2.12 70-130 25 <br /> Toluene 41958-06 <0.50 40.0 40.0 41.5 40.6 ug/L EPA 8260B 1/15105 104 102 2.28 70-130 25 <br /> Tert-Butanol 41958-06 <5.0 200 200 203 201 ug/L EPA 82606 1115105 101 100 0.880 70-130 25 <br /> Methyl-t-Butyl Ether 41958-06 <0.50 40.0 40.0 32.4 32.0 ug/L EPA 82608 1115105 80.9 79.9 1.23 70-130 25 <br /> i <br /> I <br /> Approved By: Jo iff <br /> KIFF ANALYTICAL, LLC <br /> i <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> I <br />