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Report Number 25709 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 4/8/2002 <br /> Protect Name SAN JOAQUIN COUNTY <br /> Protect Number <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> p Spike Dup 5 y �- ercent Recov Diff <br /> Spiked Sample ample Sample Analysis Date Percent Percent P <br /> Parameter Sample Value Level Level Value Value Units Method Analyzed Recov Recov_ Diff Limit Limit _ <br /> Benzene 25709-03 14 201 198 319 277 ug/L EPA 8260B 415102 867 664 265 70-130 25 <br /> Toluene 25709-03 16 201 198 208 182 ug/L EPA 8260B 415102 955 83 8 130 70-130 25 <br /> Tert-Butanol 25709-03 <5 0 100 98 9 91 9 905 ug/L EPA 8260B 415/02 914 915 0 137 70-130 25 <br /> Methyl-t-Butyl Ether 25709-03 <0 50 201 198 204 208 ug/L EPA 8260B 415102 101 105 356 70-130 25 <br /> I <br /> KIFF ANALYTICAL, LLC Approved By J�el Kill <br /> 4� <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4$00 <br />