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� • i <br /> Report Number 23915 <br /> QC Report Matrix Spike/ Matrix Spike Duplicate Date 12/21/2001 <br /> Project Name Meyer ' <br /> Protect Number 3490 <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 /> Benzene 23880-03 <0 50 400 400 425 42 1 ug/L EPA 8260B 12119/200106 105 1 09 70-130 25 <br /> Toluene 23880-03 <0 50 400 400 426 42 1 ug/L EPA 8260B 121191200106 105 1 23 70-130 25 <br /> Tert-Butanol 23880-03 <5 0 200 200 189 194 ug/L EPA 8260B 12119120094 7 96 9 235 70-130 25 <br /> Methyl-t-Butyl Ether 23880-03 1 9 400 400 462 460 ug/L EPA 8260B 121191200111 110 0 611 70-130 25 <br /> KIFF ANALYTICAL LLC Approved By Joel Kiff <br /> 72.0 Olive DTivp S�iite D Davis CA 95F16 530_?q7-48n0 <br />