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i • <br /> Report Number 2110 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 10/19/2001 <br /> Project Name 1071 N Main Street, <br /> Project Number 010711-K3 <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 21240-01 <0 50 194 198 186 191 ug/L EPA 8260B 71141200195 6 961 0 522 70-130 25 <br /> Toluene 21240-01 <0 50 194 198 184 187 ug/L EPA 82608 71141200194 6 941 0 583 70-130 25 <br /> Tert-Butanol 21240-01 <5 0 972 99 2 84 5 904 ug/L EPA 8260B 71141200187 0 91 1 463 70-130 25 <br /> Methyl-t-Butyl Ether 21240-01 <0 50 194 198 196 204 ug/L EPA 82608 711412001101 103 223 70-130 25 <br /> I <br /> Approved By J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />