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k <br /> . , Report Number: 19447 , <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date ; 03/16/2001 <br /> m <br /> Protect Name : Chevron #9-4275 <br /> m <br /> Project Number : 3B6845 N <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Splice Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Dup. Sample Sample Analysis Date Percent Percent Percent Recov. Diff, 0 <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov. Recov, Diff, Llmit limit 3 <br /> Spike Recovery Data <br /> Benzene 19447.11 <0.50 24,4 24.6 220 24.0 ugfL EPA 82606 03110/20093.6 97,5 4.12 70-130 25 <br /> Toluene 19447-11 <0.50 24A 24.6 22,5 23.0 ug1L EPA B260B 03110!20092,4 96.7 4.55 70.130 25 A <br /> Tert-Butanol 19447-11 <5.0 24.4 24.6 25.3 27.2 ugfL EPA 8260B 031101200104 110 6.02 70-130 25 A <br /> M&yl•t•Butyl Ether 19447.11 44 24.4 24.6 67,1 59.2 ug/L EPA 82608 03110120093.4 60.2 43.2 70-130 25 D <br /> Z <br /> I <br /> 0 <br /> LD <br /> m <br /> A <br /> Q <br /> m <br /> D <br /> G7 <br /> M <br /> LO <br /> i m <br /> Approved By: J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> N <br /> m <br /> 720 alive Drive, Suite D Davis, CA 95616 530-297-4800 <br />