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i <br /> Report Number 097 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate Date 09/08/2005 <br /> Project Name Former Beacon 12419 <br /> Project Number 1419 48 <br /> Duplicate Spiked Spiked to Same a 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 45716-03 <0 50 400 400 399 391 ug/L EPA 8260B 9/2105 997 978 198 70-130 25 <br /> Toluene 45716-03 <0 50 400 400 371 36 3 ug/L EPA 8260B 912105 92 7 908 207 70-130 25 <br /> Tert-Butanol 45716-03 <5 0 200 200 203 201 ug/L EPA 8260B 912105 101 100 0 851 70-130 25 <br /> Methyl-t-Butyl Ether 45716-03 <0 50 400 400 39 0 389 ug/L EPA 8260B 9/2105 974 972 0208 70-130 25 <br /> Benzene 45697-04 90 400 400 464 462 ug/L EPA 82606 912105 935 930 0 582 70-130 25 <br /> Toluene 45697-04 <0 50 400 400 344 346 ug/L EPA 8260B 912105 861 864 0 330 70-130 25 <br /> Tert-Butanoi 45697-04 <5 0 200 200 194 190 ug/L EPA 8260B 9/2105 970 952 182 70-130 25 <br /> Methyl-t-Butyl Ether 45697-04 <0 50 400 400 342 350 ug/L EPA 8260B 9/2105 85 5 876 240 70-130 25 <br /> Benzene 45717-03 14 400 400 392 388 ug/L EPA 8260B 912105 944 935 1 01 70-130 25 <br /> Toluene 45717-03 <0 50 400 400 370 367 ug/L EPA 8260B 912/05 925 91 8 0 677 70-130 25 <br /> Tert-Butanol 45717-03 280 200 200 468 457 ug/L EPA 82606 912105 962 909 561 70-130 25 <br /> Methyl-t-Butyl Ether 45717-03 260 400 400 298 296 ug/L EPA 8260B 912105 100 954 4 73 70-130 25 <br /> Benzene 45710-01 <0 50 400 400 39 8 38 0 ug/L EPA 8260B 912105 994 950 453 70-130 25 <br /> Toluene 45710-01 <0 50 400 400 39 3 375 ug1L EPA 8260B 9/2105 98 3 937 479 70-130 25 <br /> Tert-Butanol 45710-01 190 200 200 387 384 ug/L EPA 8260B 912105 999 98 3 1 58 70-130 25 <br /> Methyl-t-Butyl Ether45710-01 <0 50 400 400 386 382 ug/L EPA 8260B 9/2105 966 95 6 1 05 70-130 25 <br /> Benzene 45697-02 <0 50 400 400 395 384 ug/L EPA 82606 913105 988 961 2 78 70-130 25 <br /> Toluene 45697-02 <0 50 400 400 397 385 ug/L EPA 82606 913/05 992 963 2 98 70-130 25 <br /> K1FF ANALYTICAL, LLC Approved By Joe if# <br /> if <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-2974800 <br />