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• i ! <br /> Report Number 42367 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 2/18/2005 <br /> Project Name 7-Eleven Store #19976 <br /> Protect Number 77EL.19976 05 <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 42367-06 <0 50 400 400 392 365 ug/L EPA 82606 2116105 98 0 912 713 70-130 25 <br /> i Toluene 42367-06 <0 50 400 400 384 357 ug/L EPA 8260B 2116105 961 893 732 70-130 25 <br /> Tert-Butanol 42367-06 <5 0 200 200 195 182 ug/L EPA 8260B 2116105 973 91 0 6 75 70-130 25 <br /> Methyl-t-Butyl Ether 42367-06 <0 50 400 400 378 358 ug/L EPA 8260B 2116105 944 894 541 70-130 25 <br /> s� Benzene 42367-02 <0 50 400 400 402 395 ug/L EPA 8260B 2116105 100 988 169 70-130 25 <br /> Toluene 42367-02 067 400 400 408 402 ug/L EPA 8260B 2116105 100 988 1 51 70-130 25 <br /> Tert-Butanol 42367-02 <5 0 200 200 202 208 ug/L EPA 8260B 2116105 101 104 277 70-130 25 <br /> Methyl-t-Butyl Ether 42367-02 <0 50 400 400 38 5 380 ug/L EPA 8260E 2116105 963 949 146 70-130 25 <br /> Benzene 42401-04 <0 50 400 400 376 366 ug/L EPA 8260B 2117105 939 91 4 2 71 70-130 25 <br /> Toluene 42401-04 <0 50 400 400 38 0 369 ug/L EPA 82608 2117105 949 922 2 86 70-130 25 <br /> Tart-Butanol 42401-04 <5 0 200 200 196 199 ug/L EPA 8260B 2117105 98 3 99 6 1 38 70-130 25 <br /> Methyl-t-Butyl Ether 42401-04 <0 50 400 400 370 366 ug/L EPA 82608 2117105 926 91 6 1 12 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By Jo iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> - _ I <br />