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Report Number 41425 <br /> QC Report Matnx Spike/Matrix Spike Duplicate Date 1/3/2005 <br /> Project Name T$T Trucking <br /> Project Number 121417 <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 41490-01 <0 50 400 400 439 434 ug/L EPA 8260B 12/17/04 110 108 1 13 70-130 25 <br /> Toluene 41490-01 <0 50 400 400 384 370 ug/L EPA 8260B 12/17/04 96 0 925 368 70-130 25 <br /> Tert-Butanol 41490-01 <5 0 200 200 192 197 ug/L EPA 82606 12/17/04 962 98 3 219 70-130 25 <br /> Methyl-t-Butyl Ether 41490-01 <0 50 400 400 420 333 ug/L EPA 8260E 12/17/04 105 83 3 231 70-130 25 <br /> Benzene 41425-03 <0 50 400 400 393 386 ug/L EPA 8260B 12/13/04 984 966 178 70-130 25 <br /> Toluene 41425-03 <0 50 400 400 410 39 7 ug/L EPA 8260B 12/13/04 102 994 301 70-130 25 <br /> Tert-Butanol 41425-03 <5 0 200 200 202 199 ug/L EPA 8260E 12/13/04 101 996 134 70-130 25 <br /> Methyl-t-Butyl Ether41425-03 16 400 400 517 51 1 ug[L EPA 8260B 12/13/04 904 890 1 56 70-130 25 <br /> Benzene 41451-01 <0 50 400 400 38 6 37 7 ug/L EPA 8260B 12/13/04 970 94 2 293 70-130 25 <br /> Toluene 41451-01 <0 50 400 400 39 8 387 ug/L EPA 8260E 12/13/04 995 969 2 65 70-130 25 <br /> Tert-Butanol 41451-01 <5 0 200 200 199 198 ug/L EPA 8260B 12/13/04 99 7 993 0 408 70-130 25 <br /> Methyl-t-Butyl Ether41451-01 <0 50 400 400 356 351 ug/L EPA 82606 12/13/04 89 0 877 143 70-130 25 <br /> Benzene 41449-08 <0 50 400 400 39 4 377 ug/L EPA 82608 12/14/04 984 94 2 4 34 70-130 25 <br /> Toluene 41449-08 <0 50 400 400 413 395 ug/L EPA 8260B 12/14/04 103 988 4 30 70-130 25 <br /> Tert-Butanol 41449-08 <5 0 200 200 205 197 ug/L EPA 8260B 12/14/04 103 987 390 70-130 25 <br /> Methyl-t-Butyl Ether 41449-08 <0 50 400 400 34 8 339 ug/L EPA 82606 12/14/04 86 9 84 7 2 55 70-130 25 <br /> i � I <br /> Approved By Jo Gff i <br /> KIFF ANALYTICAL, LLC _ <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> I - <br />