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i • • <br /> Report Number 33488 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date 6/12/2003 <br /> Project Name Former Beacon #12419 <br /> Project Number 1419.46 <br /> Du licate Duplicate Spiked <br /> P Spiked Spiked Sample Relative <br /> Spiked Sample Spike <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> 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 /> Tert-Butanol 33522-06 <5 0 200 200 198 205 ug/L EPA 8260B 619103 992 <br /> 102 326 70-130 25 <br /> Methyl-t-Butyl Ether 33522-06 89 400 400 542 521 ug/L EPA 8260B 619103 113 108 474 70-130 25 <br /> Benzene 33575-04 <0 50 400 400 352 382 ug/L EPA 82606 6111/03 879 954 824 70-130 25 11 <br /> Toluene 33575-04 <0 50 400 400 364 395 ug/L EPA 8260E 6111103 91 1 988 806 70-130 25 <br /> Tert-Butanol 33575-04 <5 0 200 200 180 198 ug/L EPA 82608 6/11103 903 99 2 944 70-130 25 <br /> Methyl-t-Butyl Ether 33575-04 <0 50 400 400 38 5 428 ug/L EPA 8260B 6111/03 962 107 105 70-130 25 <br /> I <br /> KIFF ANALYTICAL, LLC Approved By JqI Kiff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 V <br />