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rw r rr r� r rr rr r rr r. �r ,rr r rr rr r r r <br /> Report Number 36635 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 1/18/2004 <br /> Project Name San Joaquin Catholic <br /> Project Number <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 36640-01 <0 50 400 400 477 46 3 ug/L EPA 8260B 1114104 119 116 2 98 70-130 25 <br /> Toluene 36640-01 <0 50 400 400 465 447 ug/L EPA 8260B 1114104 116 112 3 88 70-130 25 <br /> Tert-Butanol 36640-01 <5 0 200 200 207 209 ug/L EPA 8260B 1114104 104 104 0 764 70-130 25 <br /> Methyl-t-Butyl Ether 36640-01 <0 50 400 400 460 45 6 ug/L EPA 82606 1/14104 115 114 0 895 70-130 25 <br /> I <br /> Approved By <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />