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Report Number 33270 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 6/2/2003 <br /> Project Name ARC Pump & Weld <br /> Project Number <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike pup 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 33255-07 60 400 400 950 91 7 ug/L EPA 8260B 5124103 86 0 780 985 70-130 25 <br /> Toluene 33255-07 <0 50 400 400 393 386 ug/L EPA 8260B 5124103 98 3 966 1 72 70-130 25 <br /> Ter(-Butanol 33255-07 10 200 200 188 197 ug/L EPA 8260B 5/24103 891 936 490 70-130 25 <br /> Methyl-t-Butyl Ether 33255-07 1 5 400 400 41 9 41 7 ug/L EPA 8260B 5124103 101 100 0 446 70-130 25 <br /> Benzene 33234-30 <0 50 400 400 41 6 409 ug/L EPA 8260B 5123103 104 102 1 82 70-130 25 <br /> Toluene 33234-30 <0 50 400 400 39 8 396 ug/L EPA 8260B 5123103 994 99 1 0 302 70-130 25 <br /> Tert-Butanol 33234-30 <50 200 200 229 206 ug/L EPA 8260B 5123103 114 103 106 70-130 25 <br /> Methyl-t-Butyl Ether 33234-30 <0 50 400 400 453 420 ug/L EPA 82608 5/23/03 113 105 758 70-130 25 <br /> Benzene 33365-06 <0 50 400 400 404 399 ug/L EPA 82608 5/30/03 101 998 1 12 70-130 25 <br /> Toluene 33365-06 <0 50 400 400 424 41 1 ug/L EPA 82608 5130103 106 103 319 70-130 25 <br /> Ter(-Butanol 33365-06 <50 200 200 204 208 ug/L EPA 8260E 5130103 102 104 1 80 70-130 25 <br /> Methyl-t-Butyl Ether 33365-06 <0 50 400 400 38 2 41 5 ug/L EPA 8260B 5/30103 954 104 843 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By J�e KiffI <br /> s <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />