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Report Number: 40903 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date : 11/11/2004 <br /> Project Name : 2575 Country Club Blvd., <br /> Project Number: 206-0783-001 <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 40896-07 44 20.0 20.0 134 72.8 mg/Kg M EPA 8015 11/10/04 208 113 59.3 60-140 25 <br /> Benzene 40852-09 <0.0050 0.0392 0.0391 0.0319 0.0309 mg/Kg EPA 8260B 11/10/04 81.4 79.0 3.00 70-130 25 <br /> Toluene 40852-09 <0.0050 0.0392 0.0391 0.0307 0.0301 mg/Kg EPA 8260B 11/10/04 78.2 76.9 1.71 70-130 25 <br /> Methyl-t-Butyl Ether 40852-09 <0.0050 0.0392 0.0391 0.0346 0.0332 mg/Kg EPA 82608 11/10/04 88.2 84.8 3.92 70-130 25 <br /> Benzene 40903-01 <0.0050 0.0394 0.0399 0.0359 0.0359 mg/Kg EPA 8260B 11/9/04 91.0 90.0 1.04 70-130 25 <br /> Toluene 40903-01 <0.0050 0.0394 0.0399 0.0338 0.0344 mg/Kg EPA 8260B 11/9/04 85.6 86.0 0.464 70-130 25 <br /> Methyl-t-Butyl Ether409O3-01 <0.0050 0.0394 0.0399 0.0389 0.0398 mg/Kg EPA 82608 11/9/04 98.7 99.8 1.18 70-130 25 <br /> Benzene 40903-02 <0.0050 0.0378 0.0388 0.0366 0.0369 mg/Kg EPA 8260B 11/9/04 96.7 95.1 1.69 70-130 25 <br /> Toluene 40903-02 <0.0050 0.0378 0.0388 0.0363 0.0362 mg/Kg EPA 8260B 11/9/04 96.1 93.3 2.93 70-130 25 <br /> Methyl-t-Butyl Ether 40903-02 <0.0050 0.0378 0.0388 0.0395 0.0398 mg/Kg EPA 8260B 11/9/04 104 102 2.09 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 />