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Report Number : 41206 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : ' .121612004 <br /> Project Name : FREMONT QUIK STOP <br /> Project Number: 7039.45 <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 /> Benzene 41200-09 <0.50 40.0 40.0 40.7 40.7 ug/L EPA 8260E 1212104 102 102 0.00543 70-130 25 <br /> Toluene 41200-09 <0.50 40.0 40.0 40.1 39.7 ug/L EPA 82606 1212104 100 99.3 1.09 70-130 25 <br /> Tert-Butanol 41200-09 <5.0 200 200 195 195 ug/L EPA 8260B 12!2104 97.6 97.6 0.0333 70-130 25 <br /> Methyl-t-Butyl Ether 41200-09 0.83 40.0 40.0 45.9 45.7 ug/L EPA 82606 1212104 113 112 0.508 70-130 25 <br /> Benzene 41220-07 <0.50 40.0 40.0 40.1 38.8 ug/L EPA 82606 1212104 100 97.1 3.10 70-130 25 <br /> Toluene 41220-07 1.4 40.0 40.0 43.2 41.7 ug/L EPA 8260B 1212104 104 101 3.44 70-130 25 + <br /> Tert-Butanol 41220-07 <5.0 200 200 216 212 ug/L EPA 8260B 1212104 108 106 2.02 70-130 25 <br /> Methyi-t-Butyl Ether 41220-07 30 40.0 40.0 76.7 75.1 ug/L. EPA 82608 1212/04 116 112 3.64 70-130 25 <br /> Approved By: Joe iff <br /> KIFF ANA AL, LLC <br /> kms. <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> v r* <br />