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0 <br /> Report Number 20947 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate Date 7/11/2001 - <br /> Project Name 2575 Country Club Blvd, <br /> Project Number 243-0783-003 <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 /> Spike Recovery Data <br /> Benzene 20947-02 <0 50 19 5 196 187 192 ug/L EPA 82606 7/2/2001 960 98 0 1 96 70-130 25 <br /> Toluene 20947-02 <0 50 195 196 186 189 ug/L EPA 8260E 7/2/2001 952 967 1 54 70-130 25 <br /> Tert-Butanol 20947-02 <5 0 975 979 854 88 3 ug/L EPA 8260E 7/2/2001 87 7 902 2 80 70-130 25 <br /> Methyl-t-Butyl Ether 20947-02 <0 50 195 196 184 185 ug/L EPA 8260B 7/2/2001 944 94 6 0 238 70-130 25 <br /> I <br /> i <br /> i <br /> Approved By J6y Kiff <br /> KIFF ANALYTICAL, LLC 7 <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 U <br />