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0 0 Report Number 305 <br /> QC Report , Matrix Spike/Matrix Spike Duplicate Date 1/9/2003 <br /> Project Name 4315 Waterloo Road, <br /> Project Number 030103-SH-2 <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 30804-01 <0 50 400 400 402 39 7 ug1L EPA 8260B 119103 100 992 1 18 70-130 25 <br /> Toluene 30804-01 <0 50 400 400 39 6 391 ug/L EPA 8260B 119103 991 978 1 27 70-130 25 <br /> Tert-Butanol 30804-01 <5 0 200 200 190 200 ug/L EPA 8260E 119103 951 100 5 00 70-130 25 <br /> Methyl-t-Butyl Ether 30804-01 <0 50 400 400 375 371 ug/L EPA 82608 119103 937 928 1 04 70-130 25 <br /> Benzene 30776-09 <0 50 400 400 408 386 uglL EPA 8260E 119103 102 964 565 70-130 25 <br /> Toluene 30776-09 <0 50 400 400 399 378 ug/L EPA 8260B 119103 997 945 541 70-130 25 <br /> Tert-Butanol 30776-09 <5 0 200 200 201 194 ug1L EPA 8260B 119103 100 968 3 58 70-130 25 <br /> Methyl-t-Butyl Ether 30776-09 42 400 400 826 78 7 ug1L EPA 8260B 119103 103 928 102 70-130 25 <br /> i <br /> i <br /> KIFF ANALYTICAL, LLC Approved By J I Kiff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />