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0 <br /> Report Number 29697 - <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 11/22/2002 <br /> I <br /> Project Name T & T TRUCKING <br /> Project Number 21417 <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 29697-02 <0 50 400 400 406 405 ug/L EPA 8260B 11/15/02 101 101 0 123 70-130 25 <br /> Toluene 29697-02 <0 50 400 400 420 41 2 ug/L EPA 8260B 11/15/02 105 103 1 73 70-130 25 <br /> Tert-Butanol 29697-02 <5 0 200 200 202 195 ug/L EPA 8260B 11/15/02 101 977 330 70-130 25 <br /> Methyl-t-Butyl Ether 29697-02 <0 50 400 400 390 388 ug/L EPA 8260B 11/15/02 974 969 0 592 70-130 25 <br /> Benzene 29885-09 90 400 400 506 496 ug/L EPA 8260B 11121/02 104 102 2 31 70-130 25 <br /> Toluene 29885-09 <0 50 400 400 436 422 ug/L EPA 8260B 11/21/02 109 105 327 70-130 25 <br /> Tert-Butanol 29885-09 <5 0 200 200 208 202 ug1L EPA 8260B 11/21/02 104 101 299 70-130 25 <br /> Methyl-t-Butyl Ether 29885-09 <0 50 400 400 393 394 ug/L EPA 8260B 11/21/02 98 3 98 5 0 254 70-130 25 <br /> Benzene 29831-07 <0 50 400 400 408 401 ug/L EPA 8260B 11/20/02 102 100 1 90 70-130 25 <br /> Toluene 29831-07 <0 50 400 400 325 357 ug/L EPA 8260B 11120/02 813 892 9 32 70-130 25 <br /> Tert-Butanol 29831-07 <5 0 200 200 189 190 ug1L EPA 8260E 11/20/02 944 952 0 833 70-130 25 <br /> Methyl-t-Butyl Ether 29831-07 080 400 40 0 391 365 ug/L EPA 82608 11/20/02 958 894 694 70-130 25 <br /> Approved By J* Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />