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i <br /> Report Number 27189 <br /> QC Report: Matrix Spike/Matrix Spike Duplicate Date 7!812002 <br /> Project Name . 2575 COUNTRY CLUB <br /> Project Number 2440783 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Spiked Sample Spike Duo Sample Sample Analysis Date Percent Percent Percent Recov Diff <br /> Parameter Sample Value Level Level Value Value Units Method Ana! ed Recov Recov! Diff Limit Limit <br /> Benzene 27163-02 <0 50 200 199 18.9 186 ug/L EPA 8260B 712102 947 935 130 70-130 25 <br /> Toluene 27163-02 <0.50 200 199 190 186 ug/L EPA 8260B 712102 95 0 934 1 64 70-130 25 <br /> Tert-Butanol 27163.02 140 100 99.6 248 246 ug/L EPA 8260B 712102 103 101 160 70-130 25 <br /> Methyl-t-Butyl Ether 27163-02 110 20.0 199 125 124 ug/L EPA 8260B 712102 742 674 968 70-130 25 <br /> Benzene 27231-01 <0 50 400 400 42.4 41 6 ug/L EPA 8260B 712102 106 104 1 88 70-130 25 <br /> Toluene 27231-01 <0 50 40.0 40.0 427 417 ug/L EPA 82608 712102 107 104 218 70-130 25 <br /> Tert-Butanol 27231-01 <5.0 200 200 217 213 ug/L EPA 8260E 712102 108 107 183 70-130 25 <br /> Methyl-t-Butyl Ether 27231-01 <0 50 400 400 394 397 ug/L EPA 82608 712102 98 4 99 2 0 785 70-130 25 <br /> i <br /> KIFF ANAApproved By. J I Kiff ti <br /> • I,�ICAL, LLC • <br /> 720 Olive Dnve, Suite 0 avis, CA 95616 530-297-4800 II <br />