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0 V 1 <br /> • Report Number 47403 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/20/2005 <br /> Project Name Former Beacon 12419 i <br /> Project Number 1419.48 <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 47447-01 <0 50 400 400 432 429 ug/L EPA 82608 12/16/05 108 107 0 632 70-130 25 <br /> Toluene 47447-01 <0 50 400 400 409 405 ug/L EPA 82606 12/16/05 102 101 0 962 70-130 25 <br /> Tert-Butanol 47447-01 <5 0 200 200 205 212 ug/L EPA 8260B 12/16/05 102 106 363 70-130 25 <br /> Methyl-t-Butyl Ether47447-01 <0 50 400 400 421 422 ug/L EPA 8260B 12/16/05 105 106 0 298 70-130 25 <br /> Benzene 47424-09 <0 50 400 400 429 41 8 ug/L EPA 8260B 12/16/05 107 105 2 41 70-130 25 <br /> Toluene 47424-09 <0 50 400 400 420 414 ug/L EPA 8260B 12/16/05 105 103 147 70-130 25 <br /> Tert-Butanol 47424-09 <5 0 200 200 212 202 ug/L EPA 8260B 12/16/05 106 101 487 70-130 25 <br /> Methyl-t-Butyl Ether47424-09 2 8 400 400 429 450 ug/L EPA 8260B 12/16/05 100 106 508 70-130 25 <br /> KfFF ANALYTICAL, LLC Approved By Joe iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-2974800 <br />