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Rel ort Number 25746 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Oats 04/08/2002 <br /> Project Name 2575 Country Club, <br /> Project Number 244-0783 <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 RecovII Diff Limit Limit <br /> Benzene 25746-04 <0 50 200 200 183 182 ug/L EPA 82608 414102 913 912 0110 70-130 25 <br /> Toluene 25746-04 <0 50 200 200 188 188 ug/L EPA 8260E 4/4102 941 94 4 0 239 70-130 25 <br /> Tert-Butanol 25746-04 71 100 999 153 149 ug/L EPA 82608 4/4/02 823 78 5 476 70-130 25 <br /> Methyl-t-Butyl Ether 25746-04 60 200 200 263 25 7 ug/L EPA 8260B 4/4102 102 986 296 70-130 25 <br /> Benzene 25746-02 <0 50 400 400 389 385 ug/L EPA 8260B 4/2102 973 962 108 70-130 25 <br /> Toluene 25746-02 <0 50 40.0 400 361 35 9 ug/L EPA 82608 412102 904 898 0 555 70-130 25 <br /> Tert-Butanol 25746-02 6400 200 200 11500 10200 ug/L EPA 82608 412102 2580 1890 307 70-130 25 <br /> Methyl-t-Butyl Ether 25746-02 48000 400 400 7360 6740 ug/L EPA 8260B 412102 000 000 000 70-130 25 <br /> Approved By J I Kiff <br /> KIFF AN ICAL, LLC <br /> 720 Olive Drive, Suite Avis, CA 95616 530-297-4800 <br />