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Report Number 29077 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date 10/15/2002 <br /> Project Name 2575 Country Club Blvd. <br /> Project Number 244-0783 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked�� Sample Relative <br /> Spike Spiked Spiked Sample SampleRelative 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 II Diff Limit Limit <br /> Benzene 29085-02 61 398 399 889 889 ug/L EPA 82608 10/12/02 69 6 69 3 0 387 70-130 25 <br /> Toluene 29085-02 0 91 39 8 399 430 432 ug/L EPA 8260B 10/12/02 106 106 0 122 70-130 25 <br /> Tert-Butanol 29085-02 48 199 200 254 254 ug/L EPA 8260B 10/12/02 103 103 0 293 70-130 25 <br /> Methyl-t-Butyl Ether 29085-02 7 2 398 39 9 468 469 ug/L EPA 8260B 10/12/02 994 99 5 0 137 70-130 25 <br /> Benzene 29077-02 <0 50 400 400 400 399 ug/L EPA 8260B 10/11/02 99 9 996 0 250 70-130 25 <br /> Toluene 29077-02 <0 50 400 40 0 390 388 ug/L EPA 8260B 10/11/02 976 969 0 771 70-130 25 <br /> Tert-Butanol 29077-02 8100 200 200 8200 8300 ug/L EPA 8260E 10/11/02 551 106 637 70-130 25 <br /> Methyl-t-Butyl Ether 29077-02 <0 50 400 400 34 7 348 ug/L EPA 8260E 10/11/02 868 86 9 0144 70-130 25 <br /> Approved By J I KifF <br /> KIFF ANAICAL, LLC <br /> 2795 2nd St, Suite 30C is, CA 95616 530-297-4800 <br /> 11 �� <br />