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• i • <br /> Report Number 34286 J <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 8/5/2003 <br /> Protect Name SINGH <br /> Project Number 3254 <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 34286-01 <0 50 400 400 41 6 409 ug/L EPA 82606 7131103 104 102 165 70-130 25 <br /> Toluene 34286-01 <0 50 400 400 421 407 ug/L EPA 82606 7131103 105 102 350 70-130 25 <br /> Tert-Butanol 34286-01 90 200 200 209 217 ug/L EPA 8260B 7131103 100 104 394 70-130 25 <br /> Methyl-t-Butyl Ether 34286-01 13 400 400 52 3 529 ug/L EPA 82606 7131103 977 992 1 57 70-130 25 <br /> Benzene 34286-05 <0 50 400 400 41 0 394 uglL EPA 8260B 7131103 102 985 3 91 70-130 25 <br /> Toluene 34286-05 <0 50 400 400 408 41 2 uglL EPA 8260B 7131103 102 103 0 756 70-130 25 <br /> Tert-Butanol 34286-05 10 200 200 212 209 uglL EPA 8260B 7131103 101 992 140 70-130 25 <br /> Methyl-t-Butyl Ether 34286-05 13 400 400 576 480 uglL EPA 8260E 7/31103 112 878 241 70-130 25 <br /> Benzene 34272-01 <0 50 400 400 402 390 uglL EPA 82606 811103 100 975 2 90 70-130 25 <br /> Toluene 34272-01 <0 50 400 400 404 39 6 ug/L EPA 8260B 811103 101 991 1 95 70-130 25 <br /> Tert-Butanol 34272-01 <5 0 200 200 199 202 ug/L EPA 82606 811103 995 101 1 79 70-130 25 <br /> Methyl-t-Butyl Ether 34272-01 <0 50 400 400 39 0 380 ug/L EPA 82606 811103 975 949 273 70-130 25 <br /> 1 1w <br /> K1FF ANALYTICAL, LLC Approved By Jt�l Kiff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> I <br />