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Report Number: 66912 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 01/23/2009 <br /> Project Name : Stockton Promenade <br /> Project Number: 7345.09 <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 RecovRecov. Diff. Limit Limit • <br /> TPH as Diesel 66885-01 310 20.0 20.0 539 357 mg/Kg M EPA 8015 1/17/09 162 107 40.7 60-140 25 <br /> 1,1-Dichloroethane 66858-03 <0.0050 0.0400 0.0400 0.0331 0.0335 mg/Kg EPA 82608 1/16/09 82.8 83.5 0.884 70-130 25 <br /> 1,2-Dichloroethane 66858-03 <0.0050 0.0397 0.0398 0.0338 0.0340 mg/Kg EPA 8260B 1/16/09 85.0 85.6 0.658 70-130 25 <br /> Benzene 66858-03 <0.0050 0.0387 0.0388 0.0331 0.0332 mg/Kg EPA 8260B 1/16/09 85.4 85.6 0.209 70-130 25 <br /> Chlorobenzene 66858-03 <0.0050 0.0392 0.0393 0.0348 0.0347 mg/Kg EPA 8260B 1/16/09 88.8 88.4 0.380 70-130 25 <br /> Toluene 66858-03 <0.0050 0.0395 0.0396 0.0340 0.0350 mg/Kg EPA 8260B 1/16/09 86.0 88.5 2.89 70-130 25 <br /> 1,1-Dichloroethane 66921-01 <0.0050 0.0400 0.0399 0.0330 0.0328 mg/Kg EPA 8260B 1/21/09 82.4 82.3 0.0300 70-130 25 <br /> 1,2-Dichloroethane 66921-01 <0.0050 0.0398 0.0396 0.0400 0.0391 mg/Kg EPA 8260B 1/21/09 100 98.7 1.83 70-130 25 <br /> Benzene 66921-01 <0.0050 0.0388 0.0386 0.0310 0.0313 mg/Kg EPA 8260B 1/21/09 80.0 81.0 1.24 70-130 25 <br /> Chlorobenzene 66921-01 <0.0050 0.0393 0.0391 0.0278 0.0293 mg/Kg EPA 82608 1/21/09 70.7 74.9 5.86 70-130 25 <br /> Toluene 66921-01 <0.0050 0.0396 0.0394 0.0291 0.0302 mg/Kg EPA 8260B 1/21/09 73.5 76.5 4.06 70-130 25 <br /> • <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd Street, Suite 300 Davis, CA 95618 530-297-4800 <br />