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Report Number 31425 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 2/1912003 <br /> i <br /> Project Name T$T TRUCKIN <br /> Protect Number 2107 <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 RecovDiff _ Limit Limit <br /> Benzene 31326-07 <0 50 39 9 401 387 39 3 ug/L EPA 8260B 2113103 970 980 1 05 70-130 25 <br /> Toluene 31326-07 <0 50 39 9 401 39 4 399 ug/L EPA 82606 2113/03 988 996 0 907 70-130 25 <br /> Tert-Butanol 31326-07 <5 0 200 200 191 194 ug/L. EPA 8260B 2113103 956 970 1 50 70-130 25 <br /> Methyl-t-Butyl Ether 31326-07 <0 50 399 401 408 410 ug/L. EPA 8260B 2113103 102 102 0 196 70-130 25 <br /> Benzene 31449-01 <0 50 400 400 379 373 ug/L EPA 8260B 2113103 947 932 1 57 70-130 25 <br /> Toluene 31449-01 <0 50 400 400 435 428 ug/L EPA 8260B 2113103 109 107 1 76 70-130 25 <br /> Tert-Butanol 31449-01 <5 0 200 200 196 201 ug/L EPA 8260B 2113103 981 101 2611 70-130 25 <br /> Methyl-t-Butyl Ether 31449-01 <0 50 400 400 426 424 ug/l_ EPA 8260B 2113103 106 106 0 353 70-130 25 <br /> Approved By J61 Kill <br /> KIFF ANALYTICAL, LLC U <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />