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Report Number 43856 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 6/10/2005 <br /> Project Name Restructure <br /> Project Number RPMS0966 <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 43792-03 7 0 39 8 394 51 8 515 ug/L EPA 8260B 5119105 113 113 00730 70-130 25 <br /> Toluene 43792-03 1 8 398 394 46 0 450 ug/L EPA 82606 5119105 111 109 146 70-130 25 <br /> Tert-Butanol 43792-03 <50 199 197 203 196 ug/L EPA 8260B 5119105 102 99 5 2 72 70-130 25 <br /> Methyl-t-Butyl Ether 43792-03 <0 50 398 394 409 418 ug/L EPA 8260B 5119105 103 106 3 12 70-130 25 <br /> Benzene 43800-07 <0 50 396 398 467 470 ug/L EPA 82606 5120/05 118 118 0208 70-130 25 <br /> Toluene 43800-07 1 0 396 39 8 460 45 7 ug/L EPA 8260B 5120/05 113 112 0 863 70-130 25 <br /> Tert-Butanol 43800-07 <5 0 198 199 217 222 ug/L EPA 8260B 5120105 109 112 225 70-130 25 <br /> Methyl-t-Butyl Ether 43800-07 <0 50 396 398 404 397 ug/L EPA 8260B 5120105 102 999 215 70-130 25 <br /> Benzene 43855-02 <0 50 400 400 374 365 ug/L EPA 8260B 5120105 935 91 2 243 70-130 25 <br /> Toluene 43855-02 <0 50 400 400 365 35 5 ug/L EPA 82608 5/20105 91 3 888 2 80 70-130 25 <br /> Tert-Butanol 43855-02 <50 200 200 187 189 ug/L EPA 8260B 5120105 935 946 1 17 70-130 25 <br /> Methyl-t-Butyl Ether43855-02 92 400 400 444 44 8 ug/L EPA 8260B 5120/05 88 0 88 9 1 08 70-130 25 <br /> Benzene 43866-05 <0 50 400 400 371 34 6 ug/L EPA 8260B 5120105 927 865 6 85 70-130 25 <br /> Toluene 43866-05 <0 50 400 400 351 32 9 ug/L EPA 8260B 5120105 877 82 3 6 34 70-130 25 <br /> Tert-Butanol 43866-05 <5 0 200 200 184 182 ug/L EPA 82608 5120105 922 91 3 1 02 70-130 25 <br /> Methyl-t-Butyl Ether43866-05 18 400 400 522 490 ug/L EPA 82608 5120105 857 77 8 962 70-130 25 <br /> Benzene 43911-02 530 400 400 504 487 ug/L EPA 8260B 5120105 000 000 000 70-130 25 <br /> Toluene 43911-02 6 0 400 400 435 41 7 ug/L EPA 8260B 5120/05 937 892 4 96 70-130 25 <br /> Approved By ,!o iff <br /> K1FF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />