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0 <br /> 2 <br /> Report Number 260 <br /> p 5 <br /> 4C Report Matrix Spike/Matrix Spike Duplicate Date 4/29/2002 <br /> Protect Name ROBLES <br /> Protect Number 3490 <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 26022-02 <0 50 400 400 384 384 uglL EPA 8260E 4124102 960 959 0 182 70-130 25 <br /> Toluene 26022-02 <0 50 400 400 396 393 ug/L EPA 82608 4124102 991 982 0 938 70-130 25 <br /> Tert-Butanol 26022-02 <50 200 200 197 197 ug/L EPA 8260B 4124102 986 985 0 137 70-130 25 <br /> Methyl-t-Butyl Ether 26022-02 <0 50 400 400 345 346 ug/L EPA 8260B 4124102 862 866 0 463 70-130 25 <br /> Benzene 26078-04 <0 50 400 400 375 375 ug/L EPA 8260B 4126102 938 937 00800 70-130 25 <br /> Toluene 26078-04 <0 50 400 400 385 381 ug/L EPA 8260B 4126102 962 952 112 70-130 25 <br /> Tert-Butanol 26078-04 <5 0 200 200 196 192 ug/L EPA 8260B 4126102 982 961 215 70-130 25 <br /> Methyl-t-Butyl Ether 26078-04 10 400 400 370 367 ug/L EPA 8260E 4126102 899 891 0 866 70-130 25 <br /> r� <br /> I <br /> Approved By Joel Kiff <br /> KIFF ANALYTICAL, LLC <br /> r <br /> 720 Olive Drive, Suite 0 Davis, CA 95616 530-297-4800 <br />