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Report Number 23617 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 1216101 <br /> Project Name QUIK STOP STOCKTON <br /> Project Number 7039.42 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike pup 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 /> Spike Recovery Data <br /> Benzene 23611-01 <0 50 198 195 199 198 ug/L EPA 8260E 1213101 100 101 104 70-130 25 <br /> Toluene 23611-01 <0 50 198 195 185 186 ug/L EPA 8260B 1213101 93 5 952 180 70-130 25 <br /> Tert-Butanol 23611-01 <5 0 989 976 970 976 ug/L EPA 8260B 1213101 981 100 193 70-130 25 <br /> Methyl-t-Butyl Ether 23611-01 <0 50 19 8 195 195 193 ug1L EPA 8260B 12/3101 986 988 0203 70-130 25 <br /> I <br /> Approved By J¢el Kiff <br /> KIFF ANALYTICAL, LLC 1 <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-0800 <br />