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t i <br /> Report Number 38662 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 6/15/2004 <br /> Project Name Former Beacon 12419 <br /> Project Number 1419.47 <br /> i <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 38724-03 <0 50 400 400 374 376 uglL EPA 8260E 6112104 936 941 0 572 70-130 25 <br /> Toluene 38724-03 <0 50 400 400 387 381 uglL EPA 8260B 6112104 967 952 162 70-130 25 <br /> Tert-Butanol 3872403 <5 0 200 200 204 193 ug1L EPA 8260B 6112104 102 963 570 70-130 25 <br /> Methyl-t-Butyl Ether 38724-03 4 8 400 400 425 432 ug/L. EPA 8260E 6112104 941 958 1 79 70-130 25 <br /> Benzene 38662-04 420 400 400 450 447 ug1L EPA 82606 6110104 871 803 814 70-130 25 <br /> Toluene 38662-04 68 400 400 474 477 ug/L EPA 82608 6/10104 101 102 0 909 70-130 25 <br /> Tert-Butanol 38662-04 6 8 200 200 210 214 uglL EPA 8260B 6110104 102 103 167 70-130 25 <br /> Methyl-t-Butyl Ether 38662-04 073 400 400 456 458 ug/L. EPA 82606 6110104 112 113 0 454 70-130 25 <br /> I <br /> Benzene 38661-04 <0 50 400 400 397 384 uglL EPA 8260B 6111104 992 960 327 70-130 25 <br /> Toluene 38661-04 <0 50 400 400 381 386 ug/L EPA 8260B 6111104 953 964 121 70-130 25 <br /> Tert-Butanol 38661-04 <5 0 200 200 201 200 uglL EPA 8260B 6111104 100 999 0 499 70-130 25 <br /> Methyl-t-Butyl Ether 38661-04 <0 50 400 400 430 426 uglL EPA 8260B 6111/04 108 106 0 958 70-130 25 <br /> Benzene 38723-01 <0 50 400 400 351 361 uglL EPA 82606 6114104 878 902 265 70-130 25 <br /> Toluene 38723-01 <0 50 400 400 354 36 3 ug1L EPA 82606 6114104 886 907 235 70-130 25 <br /> Teri-Butanol 38723-01 <5 0 200 200 177 190 ug/L EPA 82606 6114104 88 7 95 0 685 70-130 25 <br /> Methyl-t-Butyl Ether 38723-01 42 400 400 776 780 ug/L EPA 82606 6114104 882 894 141 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By ,toe iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />