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. Report Number 240 <br /> QC Report : Matrix Spike/Matrix Spike Duplicate Date 1/10102 <br /> Project Name 2575 COUNTRY CLUB <br /> 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 Re <br /> Diff <br /> Parameter Sample Value Level Level Value Value Units Method Anal ed Recov Recov Diff Limit Limit <br /> Benzene 24178-01 <0 50 188 195 162 182 ug/L EPA 8260B 115102 863 933 777 70-130 25 <br /> Toluene 24178-01 <0 50 188 195 158 175 ug/L EPA 82608 1/5102 844 89 6 606 70-130 25 <br /> Tert-Butanoi 24178-01 5 5 939 975 856 891 ug/L EPA 8260B 115102 85.3 858 0 624 70-130 25 <br /> Methyl-t-Butyl Ether 24178-01 <0 50 188 195 198 207 ug/L EPA 8260E 115102 106 106 0 661 70-130 25 <br /> Benzene 24145-05 <0 50 400 400 37 3 363 ug/L EPA 82608 114102 934 907 2 85 70-130 25 <br /> Toluene 24145-05 <0 50 400 400 377 367 ug/L EPA 8260E 114102 94 2 917 274 70-130 25 <br /> Tert-Butanol 24145-05 <50 200 200 169 170 ug/L EPA 8260B 114102 844 849 0 549 70-130 25 <br /> Methyl-t-Butyl Ether 24145-05 <0 50 400 400 394 390 ug/L EPA 8260E 1!4102 98 4 976 0 842 70-130 25 <br /> Approved By: J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />