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• <br /> Report Number 310 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 10/1/2003 <br /> Project Name 6131 Pacific Ave., <br /> Project Number 030221-MS-1 <br /> Duplicate Spiked Sppked to 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 31729-04 <0 50 39 6 402 409 41 0 ug/L EPA 82606 313103 103 102 134 70-130 25 <br /> Toluene 31729-04 <0 50 396 402 38 8 394 ug/L EPA 8260B 313103 980 980 00255 70-130 25 <br /> Tert-Butanol 31729-04 14 198 201 205 215 ug/L EPA 82606 313103 964 998 346 70-130 25 <br /> Methyl-t-Butyl Ether 31729-04 100 39 6 402 138 139 ug/L EPA 82606 313103 872 890 200 70-130 25 <br /> Benzene 31772-01 <0 50 400 400 405 402 ug/L EPA 8260B 311103 101 100 0 868 70-130 25 <br /> Toluene 31772-01 <0 50 400 400 382 378 ug/L EPA 82608 311103 954 946 0 816 70-130 25 <br /> Tert-Butanol 31772-01 <5 0 200 200 196 195 ug/L EPA 8260B 311103 979 974 0 604 70-130 25 <br /> Methyl-t-Butyl Ether 31772-01 <0 50 400 400 351 354 ug/L EPA 8260B 311103 878 884 0 624 70-130 25 <br /> i <br /> KIFF ANALYTICAL, LLC Approved By J I <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />