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• 0 <br /> Report Number 42561 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 3/7/2005 <br /> Project Name 7-Eleven Store#17334 <br /> Protect Number 77EL 17334 05 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike DUD 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 42625-10 <0 50 400 400 400 39 8 ug/L EPA 8260B 314105 999 994 0 484 70-130 25 <br /> Toluene 42625-10 <0 50 400 400 39 8 385 ug/L EPA 8260B 314105 996 964 331 70-130 25 <br /> Tert-Butanol 42625-10 <50 200 200 206 207 ug/L EPA 8260B 314105 103 103 0 497 70-130 25 <br /> Methyl-t-Butyl Ether 42625-10 <0 50 400 400 390 395 ug/L EPA 8260B 314105 974 988 1 36 70-130 25 <br /> Benzene 42565-05 <0 50 400 400 399 395 ug/L EPA 8260B 312105 998 988 0 974 70-130 25 <br /> Toluene 42565-05 <0 50 400 400 392 389 ug/L EPA 82608 312105 980 972 0 835 70-130 25 <br /> Tert-Butanol 42565-05 <5 0 200 200 186 197 ug1L EPA 8260B 312105 928 985 594 70-130 25 <br /> Methyl-t-Butyl Ether 42565-05 <0 50 400 400 38 5 392 ug/L EPA 8260B 312105 962 981 1 93 70-130 25 <br /> Benzene 42558-01 <0 50 400 400 385 368 ug/L EPA 8260B 311105 962 91 9 455 70-130 25 <br /> Toluene 42558-01 <0 50 400 400 381 366 ug/L EPA 8260B 311105 953 91 5 410 70-130 25 <br /> Tert-Butanol 42558-01 <50 200 200 202 198 ug/L EPA 8260B 311105 101 990 2 32 70-130 25 <br /> Methyl-t-Butyl Ether42558-01 <0 50 400 400 384 37 9 ug/L EPA 8260B 311105 961 948 1 34 70-130 25 <br /> Benzene 42561-05 <0 50 400 400 388 375 ug/L EPA 8260B 312105 970 938 335 70-130 25 <br /> Toluene 42561-05 <0 50 400 400 386 370 ug/L EPA 8260B 312105 965 924 4 38 70-130 25 <br /> Tert-Butanol 42561-05 <5 0 200 200 210 200 ug/L EPA 8260B 312105 105 100 4 78 70-130 25 <br /> Methyl-t-Butyl Ether 42561-05 <0 50 400 400 386 387 ug/L EPA 8260B 312105 965 967 0 152 70-130 25 <br /> Benzene 42561-02 <0 50 400 400 386 382 ug/L EPA 82608 313105 96 5 95 5 1 00 70-130 25 <br /> Toluene 42561-02 <0 50 400 400 377 377 ug/L EPA 8260B 313105 1342 942 000111 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By Jo iff <br /> 2795 2nd St, Suite 300 Daws, CA 95616 530-297-4800 <br />