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r <br /> Report Number 39367 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 7131/2004 <br /> Project Name 7-Eleven Store #32262 <br /> Project Number 77EL 32262 04 <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 /> Benzene 39367-02 <0 0050 00388 00389 00400 00399 mg/Kg EPA 8260B 7129104 103 103 0 482 70-130 25 <br /> Toluene 39367-02 <0 0050 00388 00389 00401 00391 mg/Kg EPA 82606 7129104 103 100 275 70-130 25 <br /> Tert-Butanol 39367-02 <0 0050 0 194 0 194 0 178 0 180 mg/Kg EPA 8260B 7129104 91 5 926 126 70-130 25 <br /> Methyl-t-Butyl Ether 39367-02 00090 00388 00389 00565 00504 mg/Kg EPA 8260B 7129104 122 106 141 70-130 25 <br /> I <br /> Benzene 39367-03 <0 0050 00398 00380 00402 00381 mg/Kg EPA 82606 7129104 101 100 0 630 70-130 25 <br /> Toluene 39367-03 <0 0050 00398 00380 00401 00380 mg/Kg EPA 8260B 7129104 101 999 0 833 70-130 25 <br /> Tert-Butanol 39367-03 <0 0050 0 199 0 190 0 211 0 190 mg/Kg EPA 82606 7129104 106 998 586 70-130 25 <br /> Methyl-t-Butyl Ether 39367-03 0 027 00398 00380 00670 00598 mg1Kg EPA 82606 7129/04 101 872 150 70-130 25 <br /> I <br /> I <br /> Approved By Jo iff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-2974800 <br />