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Report Number 3110 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 214103 <br /> Project Name 2320 North El Dorado, <br /> Project Number C81-2320 EI Dorado <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 31127-04 <0 0050 0 100 00995 00893 00893 mg/Kg EPA 82608 1129103 89 3 898 0 475 70-130 25 <br /> Toluene 31127-04 <0 0050 0 100 00995 00898 00896 mg/Kg EPA 8260B 1129103 898 901 0 278 70-130 25 <br /> Tert-Butanol 31127-04 <0 0050 0 500 0 498 0 418 0 446 mg/Kg EPA 8260B 1129103 837 89 6 6 84 70-130 25 <br /> Methyl4-Butyl Ether 31127-04 <0 0050 0 100 00995 00956 00950 mg/Kg EPA 8260E 1129103 956 955 00523 70-130 25 <br /> I <br /> } <br /> Approved By J I Kif# <br /> KIFF ANALYTICAL_, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />