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Report Number 21965 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date . 915101 <br /> Project Name 2575 Country Club Blvd, <br /> j Project Number 243-0783-003 <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 /> Spike Recovery Data <br /> Benzene 21961-03 <0.50 194 187 17.7 172 ug/L EPA 8260E 8131101 915 91.9 0 409 70-130 25 <br /> Toluene 21961-03 <0 50 19.4 18 7 184 179 ug/L EPA 82608 8131101 949 95 4 0 578 70-130 25 <br /> Tort-Butanol 21961-03 <5 0 970 936 910 892 ug/L. EPA 8260E 8131101 939 953 152 70-130 25 <br /> Methyl-t-Butyl Ether 21961-03 <0 50 19.4 18 7 194 187 ug/L EPA 8260E 8131101 998 998 00250 70-130 25 <br /> Approved By J I Kiff <br /> KII"F ANALYTICAL, LLC <br /> 720 Olive Drive, Suite 0 Davis, CA 95616 530-297-4800 <br />