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QC Report: Matrix Spike/Matrix Spike Duplicate Report Number: 34728 <br /> Date : 9/6/2003 <br /> Project Name: Former Beacon 12474 <br /> Project Number: 1474.14 <br /> Duplicate Duplicate Spiked <br /> Spiked <br /> Spike Spiked Spiked Spiked Spiked Sample Relative <br /> Sample Spike Dup. Sample Sample Sample Sample Relative Percent Percent <br /> Parameter Sample Value Level Level Value Value Units Methods Analyzed <br /> Date zed RPercent RPercent D scent R cov. Diff. <br /> Tert-gptanol 34741-01 <5.0 200 200 192 t Limit <br /> Methyl-t-Butyl Ether 34741-01 <0.50 40.0 40.0 48.2 481 ug/L EPA 82606 912103 EPA 8260B 9/2/03 9211 920 3.27 70-130 25 <br /> 0.270 70-130 25 <br /> Benzene 34739-01 <0.50 40.0 40.0 43.6 43.1 <br /> ug/L EPA 8260B 9/2/03 109 108 1.08 Toluene 34739-01 <0.50 40.0 40.0 42.4 42.6 ug/L EPA 8260B 9/2103 106 106 0.447 70-130 25 <br /> Tert-Butanol 34739-01 <5.0 200 200 206 213 ug/L EPA 8260E 912103 103 107 3.2 30 25 <br /> Methyl-t-Butyl Ether 34739-01 1.2 40.0 40.0 46.3 45.0 ug/L EPA 8260B 9/2/03 113 109 2.97 70-� 30 25 <br /> 30 25 <br /> 4 <br /> I� <br /> !f <br /> KIFF ANALYTICAL, LLC Approved By: !�J <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />