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! • • <br /> Report Number 31996 i <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 3114103 <br /> Project Name SANCHEZ <br /> Protect Number <br /> Duplicate Duplicate Spiked <br /> u <br /> p 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 31960-11 <0 50 400 400 349 37 1 ug1L EPA 82606 3110103 87 2 928 6 31 70-130 25 <br /> Toluene 31960-11 <0 50 400 400 336 370 ug1L EPA 8260B 3110103 84 0 926 968 70-130 25 <br /> Teri-Butanol 31960-11 <5 0 200 200 180 169 ug1L EPA 8260B 3110103 89 9 845 6 12 70-130 25 <br /> Methyl-(-Butyl Ether 31960-11 <0 50 400 400 31 1 354 ug1L EPA 8260B 3110103 777 88 4 129 70-130 25 <br /> Benzene 31976-04 <0 50 400 400 425 41 8 uglL EPA 82608 319103 106 104 1 61 70-130 25 <br /> Toluene 31976-04 <0 50 400 400 406 40 1 uglL EPA 8260B 319103 102 100 1 26 70-130 25 <br /> Tert-Butanol 31976-04 <5 0 200 200 202 199 ug1L EPA 82608 319103 101 996 1 25 70-130 25 <br /> Methyl-t-Butyl Ether 31976-04 0 89 400 400 424 421 uglL EPA 82606 319103 104 103 0 604 70-130 25 <br /> Approved By J el Kiff <br /> KIFF ANALYTICAL, LLC <br /> i <br /> 2795 2nd St, Suite 300 Davis,CA 95616 530-297-4800 iii <br />