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Report Number: 40039 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date : 9/16/2004 <br /> Project Name : BARNES TRUCKING <br /> Project Number: ZB178C <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 39997-06 <0.50 38.8 38.7 39.6 39.8 ug/L EPA 82608 9113104 102 103 0.879 70-130 25 <br /> Toluene 39997-06 <0.50 38.8 38.7 37.5 37.5 ug/L EPA 8260B 9113104 96.6 96.8 0.212 70-130 25 <br /> Tert-Butanol 39997-06 <5.0 194 193 190 192 ug/L EPA 8260B 9/13104 98.0 99.4 1.41 70-130 25 <br /> Methyl-t-Butyl Ether39997-06 <0.50 38.8 38.7 42.6 41.2 ug/L EPA 8260B 9/13104 110 106 2.96 70-130 25 <br /> Benzene 40039-01 38 40.0 40.0 71.4 68.2 ug/L EPA 8260B 9/14/04 83.6 75.4 10.3 70-130 25 <br /> Toluene 40039-01 70 40.0 40.0 101 101 ug/L EPA 8260B 9/14104 77.1 78.7 2.14 70-130 25 <br /> Tert-Butanol 40039-01 <5.0 200 200 200 204 ug/L EPA 8260B 9114/04 99.8 102 2.08 70-130 25 <br /> Methyl-t-Butyl Ether40039-01 <0.50 40.0 40.0 36.3 35.8 ug/L EPA 8260B 9/14/04 90.7 89.5 1.28 70-130 25 <br /> Benzene 40039-06 47 40.0 40.0 87.0 81.0 ug/L EPA 8260B 9/15/04 99.3 84.1 16.5 70-130 25 <br /> Toluene 40039-06 62 40.0 40.0 99.4 97.6 ug/L EPA 8260B 9/15/04 94.6 90.1 4.92 70-130 25 <br /> Tert-Butanol 40039-06 <5.0 200 200 208 203 ug/L EPA 8260B 9/15104 104 101 2.71 70-130 25 <br /> Methyl-t-Butyl Ether40039-06 <0.50 40.0 40.0 35.2 34.8 ug/L EPA 8260B 9115/04 88.1 87.0 1.31 70-130 25 <br /> Benzene 40049-07 <0.50 40.0 40.0 39.6 37.3 ug/L EPA 8260B 9115104 99.1 93.3 5.97 70-130 25 <br /> Toluene 40049-07 <0.50 40.0 40.0 44.3 41.8 ug/L EPA 82608 9/15/04 111 104 5.88 70-130 25 <br /> Tert-Butanol 40049-07 <5.0 200 200 203 200 ug/L EPA 8260B 9/15/04 101 100 1.12 70-130 25 <br /> Methyl-t-Buty[ Ether40049-07 <0.50 40.0 40.0 33.9 32.6 ug/L EPA 8260B 9115/04 84.7 81.5 3.89 70-130 25 <br /> Approved By: Jae iff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />