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j Report Number 41494 <br /> I <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/21/2004 <br /> Pro, <br /> ect Name Former Beacon 12419 <br /> I <br /> Project Number 1419.47 <br /> I � <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> SpikeJ, 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;, Valuell Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 41469-05 <0 50 400 400 'i 40 4 404 ug/L EPA 8260B 12/15/04 101 101 0 154 70-130 25 <br /> To 41469-05 <0 50 400 400 ,, 39 4 396 ug/L EPA 82606 12!15104 986 991 0 523 70-130 25 <br /> Tert-Butanol 41469-05 <5 0 200 200 ,h 1x86 192 ug/L EPA 8260E 12/15/04 933 958 267 70-130 25 <br /> Methyl-t-Butyl Ether41469-05 <0 50 400 400 { 39 0 41 3 ug/L EPA 82606 12!15104 975 103 578 70-130 25 <br /> � I <br /> Benzene 41490-01 <0 50 400 400 439 434 ug/L EPA 8260B 12117/04 110 108 113 70-130 25 <br /> Toluene 41490-01 <0 50 400 400 �i 38 4 37 0 ug/L EPA 8260B 12/17/04 96 0 925 3 68 70-130 25 <br /> it <br /> Tert-Butanol 41490-01 <5 0 200 200 192 197 ug/L EPA 82608 12/17/04 962 983 219 70-130 25 <br /> Methyl-t-Butyl Ether 41490-01 <0 50 400 400 til 42 0 33 3 ug/L EPA 82606 12/17104 105 833 231 70-130 25 <br /> i 11 <br /> i <br /> - u <br /> If <br /> �} u <br /> Approved By Jo iff <br /> KIFF AN#ICAL, LLC <br /> 2795 2nd St Suite 300 Davis, CA 95616 530-297-4800 � � <br />