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Report Number 36962 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 2/12/2004 <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 36980-04 <0 50 400 400 455 434 ug/L EPA 8260B 2111104 114 108 466 70-130 25 <br /> Toluene 36980-04 <0 50 400 400 434 418 ug/L EPA 8260B 2111104 108 105 368 70-130 25 <br /> Tert-Butanol 36980-04 <5 0 200 200 211 213 ug/L EPA 8260B 2111104 105 106 0 916 70-130 25 <br /> Methyl-t-Butyl Ether 36980-04 130 400 400 181 176 ug/L EPA 8260B 2111/04 126 115 918 70-130 25 <br /> 44D, J <br /> J ! <br /> KIFF ANALYTICAL, LLC Approved By <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />