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i <br /> i <br /> Report Number 29962 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 112104/2002 <br /> Protect Name 2575 Country Club Blvd> <br /> ProjectNumber 244-0783 <br /> Duplicate Spiked <br /> Duplicate Spiked Spiked Sample Relative <br /> Spike Spiked Spiked Sample Sample Relatve 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 29947-01 <0 50 388 38 0 41 0 398 ug/L EPA 8260E 11/25/02 106 105 0 784 70-130 25 <br /> Toluene 29947-01 <0 50 388 380 404 396 ug/L EPA 8260B 11/25/02 104 104 0 0961 70-130 25 <br /> 11 <br /> Tert-Butanol 29947-01 <5 0 194 190 180 189 ug/L EPA 8260B 11/25/02 927 99 2 6179 70-130 25 <br /> Methyl-t-Butyl Ether 29947-01 <0 50 388 380 355 358 ug/L EPA 8260B 11/25/02 91 4 941 2 96 70-130 25 <br /> Benzene 30055-02 <0 50 400 400 39 2 373 ug/L EPA 8260B 11/30/02 981 932 510 70-130 25 <br /> Toluene 30055-02 <0 50 400 400 368 349 ug/L EPA 8260B 11/30/02 921 87 2 51,44 70-130 25 <br /> Tert-Butanol 30055-02 <5 0 200 200 202 210 ug/L EPA 82608 11/30/02 101 105 3X56 70-130 25 <br /> Methyl-t-Butyl Ether 30055-02 <0 50 400 400 368 361 ug/L EPA 82608 11/30/02 91 9 902 1 81 70-130 25 <br /> 11 1 <br /> Benzene 29943-05 <0 50 400 400 384 371 ug/L EPA 8260B 11/22/02 961 928 .52 70-130 25 <br /> Toluene 29943-05 <0 50 400 400 38 4 376 ug/L EPA 82608 11/22/02 961 941 208 70-130 25 <br /> Tert-Butanol 29943-05 <50 200 200 194 195 ug1L EPA 8260B 11/22/02 969 97 4 0 540 70-130 25 <br /> Methyl-t-Butyl Ether 29943-05 0 97 400 400 40 2 398 ug/L EPA 8260B 11/22/02 98 2 970 1 '20 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By J I KIff <br /> 2795 2nd St,Lite 300 W <br /> s, CA 95616 530-297-4800 <br />