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Report Number : 41088 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 11/29/2004 <br /> Project Name : 3011 West Benjamin Holt <br /> Project Number : 206-1015 <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 /> TPH as Diesel 41092-07 1.6 20.0 20.0 22.3 20.9 mg/Kg M EPA 8015 11/22/04 103 96.7 6.17 60-140 25 f <br /> l <br /> Benzene 41088-01 <0.0050 0.0380 0.0392 0.0324 0.0346 mg/Kg EPA 8260B 11/20/04 85.3 88.2 3.30 70-130 25 <br /> Toluene 41088-01 <0.0050 0.0380 0.0392 0.0322 0.0348 mg/Kg EPA 8260B 11/20/04 84.7 88.8 4.77 70-130 25 <br /> Tert-Butanol 41088-01 <0.0050 0.190 0,196 0.166 0.172 mg/Kg EPA 8260E 11120104 87.1 87.6 0.517 70-130 25 <br /> Methyl-t-Butyl Ether 41088-01 <0.0050 0.0380 0,0392 0,0362 0.0372 mg/Kg EPA 8260B 11120/04 95.1 95.0 0.139 70-130 25 <br /> Benzene 41088-05 <0.0050 0.0398 0.0393 0.0315 0.0338 mg/Kg EPA 8260B 11120/04 79.3 86.0 8.03 70-130 25 <br /> Toluene 41088-05 <0.0050 0.0398 0.0393 0.0337 0.0350 mg/Kg EPA 8260B 11120/04 84.9 89.2 4.94 70-130 25 <br /> Tert-Butanol 41088-05 <0.0050 0.199 0.196 0.200 0.183 mg/Kg EPA 8260B 11/20/04 101 93.2 7.68 70-130 25 <br /> Methyl-t-Butyl Ether 41088-05 <0.0050 0.0398 0.0393 0.0384 0.0367 mg/Kg EPA 82608 11/20/04 96.6 93.3 3.48 70-130 25 <br /> Benzene 41088-01 <0.0050 0.0398 0.0400 0.0373 0.0362 mg/Kg EPA 82606 11/22/04 93.7 90.5 3.47 70-130 25 <br /> Toluene 41088-01 <0.0050 0.0398 0.0400 0.0376 0.0363 mg/Kg EPA 8260B 11/22/04 94.3 90.7 3.84 70-130 25 <br /> Tert-Butanol 41088-01 <0.0050 0.199 0.200 0.169 0.161 mg/Kg EPA 82606 11/22/04 85.0 80.4 5.54 70-130 25 <br /> Methyl-t-Butyl Ether41088-01 <0.0050 0.0398 0.0400 0.0366 0.0326 mg/Kg EPA 8260B 11/22/04 91.8 81.6 11.8 70-130 25 <br /> Benzene 41088-07 <0.50 40.0 40.0 40.8 40.3 ug/L EPA 8260B 11/22/04 102 101 1.12 70-130 25 <br /> Toluene 41088-07 2.3 40.0 40.0 41.4 41.1 ug/L EPA 82606 11/22/04 97.9 97.0 0.874 70-130 25 <br /> Tert-Butanol 41088-07 <5.0 200 200 191 189 ug/L EPA 82606 11/22/04 95.7 94.4 1.44 70-130 25 <br /> Methyl-t-Butyl Ether 41088-07 9.2 40.0 40.0 48.1 48.5 ug/L EPA 8260E 11/22/04 97.2 98.2 0.986 70-130 25 <br /> Approved By: Jo iff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd. St, Suite 300 Davis, CA 95616 530-297-4800 <br />