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i <br /> i <br /> Report Number 34961 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 9/23/2003 <br /> Project Name 7-Eleven Store #19976 <br /> Protect Number 77EL 19976 03 <br /> Duplicate Spired <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike DUD 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 34914-01 <0 50 388 384 38 4 379 ug1L EPA 82606 9119103 988 988 00759 70-130 25 <br /> Toluene 34914-01 <0 50 388 384 389 38 3 ug/L EPA 8260B 9119103 100 997 0 475 70-130 25 <br /> Tert-Butanol 34914-01 <5 0 194 192 207 200 ug/L. EPA 82608 9/19103 107 104 2 54 70-130 25 <br /> Methyl-t-Butyl Ether 34914-01 <0 50 388 384 41 6 404 ug/L EPA 8260B 9119103 107 105 1 81 70-130 25 <br /> Benzene 34978-04 <0 50 400 400 404 409 ug/L EPA 8260B 9118103 101 102 1 38 70-130 25 <br /> Toluene 34978-04 <0 50 400 400 431 409 ug/L EPA 8260B 9118103 108 102 519 70-130 25 <br /> Tert-Butanol 34978-04 <5 0 200 200 213 215 ug/L EPA 82606 9118103 106 108 1 22 70-130 25 <br /> Methyl-t-Butyl Ether 34978-04 <0 50 400 400 49 4 450 ug/L EPA 8260B 9118103 123 112 926 70-130 25 <br /> I <br /> lw(.ll.D <br /> Approved By JOV KIf <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> i <br /> I <br />