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0 0 <br /> Report Number 45477 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 8/26/2005 <br /> Project Name 7-Eleven Store 921756 <br /> Project Number 77EL 21756 05 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dur) 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 45494-01 <0 50 400 400 373 366 ug/L EPA 8260B 8124105 932 91 5 1 76 70-130 25 <br /> Toluene 45494-01 <0 50 400 400 364 356 ug/L EPA 8260B 8124105 91 1 891 225 70-130 25 <br /> Tert-Butanol 45494-01 25 200 200 216 216 ug/L EPA 82606 8124105 95 5 957 0 162 70-130 25 <br /> Methyl-t-Butyl Ether 45494-01 230 400 400 265 262 ug/L EPA 82606 8/24105 804 725 102 70-130 25 <br /> Benzene 45477-01 <0 50 400 400 403 404 ug/L EPA 8260B 8123105 101 101 0 134 70-130 25 <br /> Toluene 45477-01 <0 50 400 400 406 405 ug/L EPA 8260B 8123105 101 101 0207 70-130 25 <br /> Tert-Butanol 45477-01 <5 0 200 200 196 198 ug/L EPA 8260B 8123105 978 988 1 05 70-130 25 <br /> Methyl-t-Butyl Ether45477-01 <0 50 400 400 370 363 ug/L EPA 8260B 8123105 924 908 1 75 70-130 25 <br /> I <br /> KIFF ANALYTICAL, LLC Approved By Jo iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />