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QC Report: Matrix Spike/ Matrix Spike Duplicate <br />Project Name : 880 Victor Rd., Lodi <br />Project Number: 244-0955-007 <br />Report Number: 25713 <br />Date : 04/02/2002 <br />Approved By: J I Kiff <br />KIFF ANALYTICAL, LLC <br />720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />• <br />10 <br />Duplicate <br />Spiked <br />Duplicate <br />Spiked <br />Spiked <br />Sample <br />Relative <br />Spiked <br />Sample <br />Spike <br />Spike <br />Dup. <br />Spiked <br />Sample <br />Spiked <br />Sample <br />Analysis <br />Date <br />Sample <br />Percent <br />Sample <br />Percent <br />Relative Percent <br />Percent Recov. <br />Percent <br />Diff. <br />Limit <br />Parameter Sample <br />Value <br />Level <br />Level <br />Value <br />Value <br />Units <br />Method <br />Analyzed Recov. <br />Recov. <br />Diff. <br />Limit <br />Benzene <br /><0.0050 <br />0.0386 <br />0.0396 <br />0.0362 <br />0.0388 <br />mg/Kg <br />EPA 8260B <br />3/30/02 <br />93.7 <br />97.8 <br />4.36 <br />70-130 <br />25 <br />Toluene <br /><0.0050 <br />0.0386 <br />0.0396 <br />0.0336 <br />0.0360 <br />mg/Kg <br />EPA 8260B <br />3/30/02 <br />87.2 <br />90.8 <br />4.13 <br />70-130 <br />25 <br />Tert-Butanol <br /><0.0050 <br />0.193 <br />0.198 <br />0.165 <br />0.177 <br />mg/Kg <br />EPA 8260B <br />3/30/02 <br />85.4 <br />89.3 <br />4.48 <br />70-130 <br />25 <br />Methyl -t -Butyl Ether <br /><0.0050 <br />0.0386 <br />0.0396 <br />0.0329 <br />0.0353 <br />mg/Kg <br />EPA 8260B <br />3/30/02 <br />85.2 <br />89.2 <br />4.58 <br />70-130 <br />25 <br />Approved By: J I Kiff <br />KIFF ANALYTICAL, LLC <br />720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />• <br />10 <br />