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iReport Number: 30 <br /> I <br /> 4C Report : Matrix Spike/Matrix Spike Duplicate Date : 4/15103 <br /> i <br /> Project Name ; 341 East Main Street, <br /> Project Number: 030408-SH-1 <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 y32712-03 <0.50 40.0 40.0 41.6 40.5 ug/L EPA 8260B 4114103 104 101 2.73 70-130 25 <br /> Toluene 32712-03 <0.50 40.0 40.0 39.6 38.6 ug/L EPA 82608 4114103 98.9 96.6 2.38 70-130 25 <br /> Tert-Butanol 32712-03 <5.0 200 200 206 211 ug/L EPA 8260B 4114103 103 106 2.35 70-130 25 <br /> Methyl-t-Butyl EthU 32712-03 2.0 40.0 40.0 40.3 42.7 ug/L EPA 8260B 4114/03 95.8 102 6.15 70-130 25 <br /> Benzene 32710-11 <0.50 40.0 40.0 41.5 41.3 ug/L EPA 8260E 4114103 104 103 0.338 70-130 25 <br /> Toluene 32710-11 <0.50 40.0 40.0 39.0 38.7 ug/L EPA 8260B 4114103 97.5 96.8 0.721 70-130 25 <br /> Tert-Butanol 32710-11 <5.0 200 200 211 213 ug/L EPA 8260B 4114/03 105 106 1.06 70-130 25 <br /> Methyl-t-Butyl EthE r 32710-11 <0.50 40.0 40.0 42.8 43.3 ug/L EPA 82608 4114/03 107 108 1.23 70-130 25 <br /> i <br /> I <br /> Approved By: 9 I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />