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Report!Number 39243 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 7/23/2004 <br /> Project Name Sanchez Property <br /> Project Number <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 39241-01 <0 50 398 395 404 401 ug/L EPA 8260E 7120104 102 101 00638 70-130 25 <br /> Toluene 39241-01 <0 50 398 395 38 6 389 ug/L EPA 8260B 7120104 96 8 984 168 70-130 25 <br /> Tert-Butanol 39241-01 6 5 199 198 191 190 ug/L EPA 82606 7/20104 924 931 0 761 70-130 25 <br /> Methyl-t-Butyl Ether 39241-01 <0 50 39 8 395 423 410 ug/L EPA 8260B 712D104 106 104 2 41 70-130 25 <br /> Benzene 39266-03 61 400 400 46 6 46 2 ug/L EPA 8260B 7120104 101 100 1 12 70-130 25 <br /> Toluene 39266-03 1 1 400 400 41 3 41 1 uglL EPA 8260B 7120104 100 100 0 390 70-130 25 <br /> Tert-Butanol 39266-03 21 200 200 223 217 ug/L EPA 8260B 7120104 101 983 2 85 70-130 25 <br /> Methyl-t-Butyl Ether 39266-03 42 400 400 88 2 888 ug/L EPA 82608 7120104 114 116 1 41 70-130 25 <br /> Benzene 39289-01 <0 50 4 00 4 00 3 61 357 ug/L EPA 8260B 7122104 903 89 2 1 19 70-130 25 <br /> Toluene 39289-01 <0 50 4 00 4 00 347 335 ug/L EPA 8260B 7122104 866 838 328 70-130 25 <br /> Tert-Butanol 39289-01 <5 0 200 200 169 175 uglL EPA 82608 7122104 84 3 87 7 394 70-130 25 <br /> Methyl-t-Butyl Ether 39289-01 1 5 400 400 460 461 uglL EPA 8260B 7122104 78 5 787 0 277 70-130 25 <br /> Benzene 39246-02 <0 50 400 400 423 417 uglL EPA 8260B 7/23104 106 104 146 70-130 25 <br /> Toluene 39246-02 <0 50 400 400 39 7 391 uglL EPA 8260E 7123/04 992 978 1 47 70-130 25 <br /> Tert-Butanol 39246-02 63 200 200 214 218 uglL EPA 82606 7123104 104 106 1 98 70-130 25 <br /> Methyl-t-Butyl Ether 39246-02 067 400 400 41 3 41 1 ug/L EPA 8260B 7123104 102 101 0 540 70-130 25 <br /> Benzene 39288-03 <0 50 400 400 388 388 ug1L EPA 8260B 7122104 96 9 971 0 217 70-130 25 <br /> Toluene 39288-03 <0 50 4 00 4 00 380 365 ug/L EPA 8260B 7122104 950 91 3 3 99 70-130 25 <br /> '1�9 q, <br /> KIFF ANALYTICAL, LLC Approved By ,jo I <br /> fff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />