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QC Report : Matrix Spike/ Matrix Spike Duplicate <br />Project Name : 4315 Waterloo Road, <br />Project Number'. 207-1359-001 <br />Report Number : 43117 <br />Date : 4/11/2005 <br />Parameter <br />Spiked <br />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 />Duplicate <br />Spiked Spiked <br />Sample Sample <br />Date Percent Percent <br />Analyzed Recov. Recov. <br />Spiked <br />Sample <br />Relative Percent <br />Percent Recov. <br />Diff. Limit <br />Relative <br />Percent <br />Diff. <br />Limit <br />Benzene <br />43117-05 <br /><0.0050 <br />0.0397 <br />0.0385 <br />0.0431 <br />0.0430 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />108 <br />112 <br />3.10 <br />70-130 <br />25 <br />Toluene <br />43117-05 <br /><0.0050 <br />0.0397 <br />0.0385 <br />0.0430 <br />0.0419 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />108 <br />109 <br />0.494 <br />70-130 <br />25 <br />Tert-Butanol <br />43117-05 <br />0.010 <br />0.198 <br />0.192 <br />0.203 <br />0.209 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />97.1 <br />103 <br />6.12 <br />70-130 <br />25 <br />Methyl -t -Butyl Ether43117-05 <br /><0.0050 <br />0.0397 <br />0.0385 <br />0.0450 <br />0.0443 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />113 <br />115 <br />1.49 <br />70-130 <br />25 <br />Benzene <br />43126-02 <br /><0.0050 <br />0.0367 <br />0.0382 <br />0.0321 <br />0.0321 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />87.6 <br />83.9 <br />4.24 <br />70-130 <br />25 <br />Toluene <br />43126-02 <br /><0.0050 <br />0.0367 <br />0.0382 <br />0.0311 <br />0.0287 <br />mg/Kg <br />EPA 82608 <br />4/6/05 <br />84.9 <br />75.0 <br />12.3 <br />70-130 <br />25 <br />Tert-Butanol <br />43126-02 <br />0.11 <br />0.183 <br />0.191 <br />0.258 <br />0.272 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />82.6 <br />86.6 <br />4.69 <br />70-130 <br />25 <br />Methyl -t -Butyl Ether 43126-02 <br /><0.0050 <br />0.0367 <br />0.0382 <br />0.0327 <br />0.0332 <br />mg/Kg <br />EPA 8260B <br />4/6/05 <br />89.1 <br />86.8 <br />2.66 <br />70-130 <br />25 <br />'�all <br />Approved By: Joe iff 11 <br />KIFF ANALYTICAL, LLC <br />2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />