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. 0 <br /> Report Number 23036 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate Date 11/6/2001 <br /> r <br /> Project Name 3725 South Tracy <br /> Project Number 011424-C1 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike DUD 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 23028-02 <0 50 199 197 193 21 5 ug/L EPA 8260B 10/30120097 2 109 11 8 70-130 25 <br /> Toluene 23028-02 1 2 199 19 7 194 214 ug/L EPA 8260B 10/30120091 8 103 11 4 70-130 25 <br /> Tert-Butanol 23028-02 <5 0 993 983 84 7 988 ug/L EPA 8260B 10130120085 3 100 16 3 70-130 25 <br /> Methyl-t-Butyl Ether 23028-02 <0 50 199 19 7 192 21 5 ug/L EPA 82608 10130120096 7 109 124 70-130 25 <br /> i <br />� <br /> K1FF ANALYTICAL, LLC Approved By Jpel Kiff <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />