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i <br /> s s <br /> Report Number 4208' <br /> 2 8 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 2/2812005 <br /> Project Name Quik Stop 39 <br /> Project Number 7039 46 <br /> Duplicate Duplicate Spiked <br /> u <br /> A 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 42478-05 <0 50 39 7 38 8 39 3 387 ug/L EPA 8260B 2123105 991 998 0 740 70-130 25 <br /> Toluene 42478-05 24 397 388 432 41 5 ug/L EPA 8260B 2123105 103 101 180 70-130 25 <br /> Tert-Butanol 42478-05 <5 0 198 194 203 186 ug/L EPA 82608 2123105 102 962 607 70-130 25 <br /> Methyl-t-Butyl Ether 42478-05 <0 50 39 7 388 323 342 ug/L EPA 8260B 2123105 81 5 883 803 70-130 25 <br /> Benzene 42516-04 <0 50 400 400 397 375 ug/L EPA 8260E 2126105 994 937 5 91 70-130 25 <br /> Toluene 42516-04 <0 50 400 400 389 36 8 ug/L EPA 8260B 2126105 973 919 570 70-130 25 <br /> Tert-Butanol 42516-04 <5 0 200 200 197 191 ug/L EPA 8260E 2126105 984 953 313 70-130 25 <br /> Methyl-t-Butyl Ether 42516-04 <0 50 400 400 393 374 ug/L EPA 8260E 2126105 982 935 4 97 70-130 25 <br /> Benzene 42517-26 <0 50 400 400 421 404 ug/L EPA 8260B 2126/05 105 101 4 05 70-130 25 <br /> Toluene 42517-26 <0 50 400 400 41 2 396 ug/L EPA 8260B 2126105 103 990 4 01 70-130 25 <br /> Tert-Butanol 42517-26 <5 0 200 200 200 201 ug/L EPA 8260B 2126105 998 101 0 884 70-130 25 <br /> Methyl-t-Butyl Ether 42517-26 14 400 400 53 9 533 ug/L EPA 82606 2126105 982 969 1 36 70-130 25 <br /> Jae iff <br /> KIFF ANALYTICAL, LLC Approved By <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />