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Report Number 22951 <br /> QC Report . Matrix Spike/Matrix Spike Duplicate Date 10/29/2001 <br /> r <br /> Project Name 440 West Charter Way, <br /> Project Number 243-1399 ! <br /> r <br /> i <br />' Duplicate Spiked <br /> 11 1 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 11 Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Spike Recovery Data ( <br /> Benzene 22951-04 <0 0050 00397 00356 0 10358,; 00338 mg/Kg EPA 8260B 10124120090 2 949 513 70-130 25 <br /> Toluene 22951-04 <0 0050 00397 003561 0{'03591 00334 mg/Kg EPA 82606 10124120090 5 939 366 70-130 25 <br /> Tert-Butanol 22951-04 <0 0050 0 198 0 178 , Oil 62 II 0 140 mg/Kg EPA 82608 10/24/200818 789 362 70-130 25 <br /> Methyl-t-Butyl Ether 22951-04 <0 0050 00397 00356, 0 30 00279 mg/Kg EPA 8260B 10124120080 6 785 2 61 70-130 25 <br /> I <br /> 1 <br /> i <br /> Approved By J I KIfF <br /> KIFF ANA /CAL, LLC <br /> • 720 Olive Drivle, Suite D is, CA 95616 530-297-4$00 <br /> 1! I! I <br />