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OC Report: Matrix Spike/ Matrix Spike Duplicate <br />Project Name : 4315 Waterloo Road, <br />Project Number: 203-1359 <br />Report Number: 19811 <br />Date : 04/05/2001 <br />Spiked <br />Parameter Sample <br />Sample <br />Value <br />Spike <br />Level <br />Spike <br />Dup. <br />Level <br />Spiked <br />Sample <br />Value <br />Duplicate <br />Spiked <br />Sample <br />Value <br />Units <br />Analysis <br />Method <br />Spiked <br />Sample <br />Date Percent <br />Analyzed Recov. <br />DuSiked <br />Spiked to Sample <br />Sample Relative Percent <br />Percent Percent Recov. <br />Recov. Diff. Limit <br />Relative <br />Percent <br />Diff. <br />Limit <br />Spike Recovery Data <br />Benzene 19811-09 <br /><0.0050 <br />0.0500 <br />0.0497 <br />0.0479 <br />0.0457 <br />mg/Kg <br />EPA 8260B <br />04/01/20095.7 <br />92.0 3.96 <br />70-130 <br />25 <br />Toluene 19811-09 <br /><0.0050 <br />0.0500 <br />0.0497 <br />0.0425 <br />0.0414 <br />mg/Kg <br />EPA 8260B <br />04/01/20085.1 <br />83.3 2.16 <br />70-130 <br />25 <br />Tert-Butanol 19811-09 <br /><0.0050 <br />0.0500 <br />0.0497 <br />0.0527 <br />0.0583 <br />mg/Kg <br />EPA 8260B <br />04/01/200105 <br />117 10.8 <br />70-130 <br />25 <br />Methyl -t -Butyl Ether 19811-09 <br /><0.0050 <br />0.0500 <br />0.0497 <br />0.0551 <br />0.0547 <br />mg/Kg <br />EPA 8260B <br />04/01/200110 <br />110 0.0727 <br />70-130 <br />25 <br />Approved <br />By: J"I Kiff <br />KIFF <br />ANALYTICAL, LLC <br />it <br />