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0 0 Report Number 08 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 2/5/2002 s <br /> Project Name 3725 South Tracy <br /> Project Number 020123-KF-1 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relative Percent Percent <br /> Parameter <br /> Spiked <br /> Value a Level Level Value a Sample <br /> Units Method$ Anal ed Recov t Percent <br /> cov t Diff <br /> Limit v mit <br /> Benzene 24509-01 <0 50 196 199 178 178 ug/L EPA 8260B 1/30/2002910 89 7 146 70-130 25 <br /> Toluene 24509-01 <0 50 196 199 178 177 ug/L EPA 82606 11301200291 2 890 247 70-130 25 <br /> Tert-Butanol 24509-01 26 978 99 3 116 111 ug/L EPA 8260B 1/30/2002919 85 8 6 83 70-130 25 <br /> Methyl-t-Butyl Ether 24509-01 60 19 6 199 737 755 ug/L EPA 82606 1/301200270 5 784 106 70-130 25 <br /> Benzene 24530-15 2 7 400 400 420 420 ug/L EPA 8260B 11311200298 3 982 00509 70-130 25 <br /> Toluene 24530-15 6 9 400 400 45 6 455 ug/L EPA 82606 11311200296 8 964 0 388 70-130 25 <br /> Tert-Butanol 24530-15 <5 0 200 200 199 177 ug/L EPA 8260E 11311200299 5 88 6 11 6 70-130 25 <br /> Methyl-t-Butyl Ether 24530-15 061 400 400 372 363 ug/L EPA 82606 1/31/2002915 892 260 70-130 25 <br /> Benzene 24476-02 <0 50 400 400 463 45 9 ug/L EPA 8260B 1/2812002116 115 0 998 70-130 25 <br /> Toluene 24476-02 <0 50 400 400 469 463 ug/L EPA 8260B 112812002117 116 127 70-130 25 <br /> Tert-Butanol 24476-02 64 200 200 266 265 ug/L EPA 8260B 112812002101 101 0203 70-130 25 <br /> Methyl-t-Butyl Ether 24476-02 <0 50 400 400 481 481 ug/L EPA 82606 112812002120 120 0 104 70-130 25 <br /> i <br /> KIFF ANALYTICAL, LLC Approved By J I Kiff <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-297-4800 <br />