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s s w <br /> • Report Number 2512 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date 3/15/2002 <br /> Project Name DOES TRUCK PLAZA <br /> Project Number 9627-001-4 <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 Reoov Diff <br /> Parameter Sample Value Level Level Value - Value Units Method -Analyzed Recov Recov Diff Limit Limit <br /> Benzene 25276-01 <0 50 197 20 0 179 205 ug/L EPA 8260B 31131200290 8 " 103 125 70-130 25T� <br /> Toluene 25276-01 <0 50 197 200 177 201 ug/L EPA 8260B 31131200289 6 101 118 70-130 25 <br /> Tert-Butanol 25276-01 <5 0 985 998 879 964 ug/L EPA 8260B 31131200289 2 966 800 70-130 25 <br /> Methyl-t Butyl Ether 25276-01 <0 50 197 200 170 202 ug/L EPA 8260B 3/131200286 4 101 159 70-130 25 <br /> Benzene 25221-03 <0 50 400 400 404 39.3 ug/L EPA 82608 3/9/2002 101 982 2 84 70-130 25 <br /> Toluene 25221-03 <0 50 400 400 430 418 ug/L EPA 8260E 3/9/2002 108 104 2.97 70-130 25 <br /> Tert-Butanol 25221-03 <5 0 200 200 203 209 ug/L EPA 8260B 3/9/2002 102 104 299 70-130 25 <br /> Methyl-t-Butyl Ether 25221-03 <0 50 400 400 34 7 349 ug/L EPA 8260B 319/2002 868 872 0 402 70.130 25 <br /> Benzene 25223-03 <0 50 400 400 41 7 400 uglL EPA 8260B 3/9/2002 104 999 421 70-130 25 <br /> Toluene 25223-03 <0 50 400 400 439 419 ug/L EPA 8260B 3/9/2002 110 105 475 70-130 25 <br /> Tert-Butanol 25223-03 <5 0 200 200 207 207 ug/L EPA 8260B 3/9/2002 103 103 00387 70-130 25 <br /> Methyl-t-Butyl Ether 25223-03 15 400 400 500 496 ug/L EPA 8260B 3/9/2002 868 857 1,19 70-130 25 <br /> / <br /> , . <br /> 5 <br /> KIFF ANALYTICAL, LLC Approved By Jel Koff <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4600 <br />