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r <br /> Report Number 30166 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 12/16/02 <br /> Project Name Barnes Trucking <br /> Project Number ZB178C <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 30168-01 <0 50 399 400 388 39 4 ug/L EPA 8260B 12/11/02 971 98 4 1 33 70-130 25 <br /> Toluene 30168-01 <0 50 399 400 377 379 ug/L EPA 82606 12/11/02 94 5 948 0 370 70-130 25 <br /> Tert-Butanol 30168-01 <5 0 200 200 189 195 ug/L EPA 82606 12/11/02 948 974 2 72 70-130 25 <br /> Methyl-t-Butyl Ether 30168-01 <0 50 399 400 38 4 386 ug/L EPA 8260B 12/11/02 96 3 966 0 259 70-130 25 <br /> Benzene 30187-05 <0 50 400 400 428 431 ug/L EPA 8260B 12/11/02 107 108 0 535 70-130 25 <br /> Toluene 30187-05 <0 50 400 400 402 403 ug/L EPA 8260B 12/11/02 100 101 0 273 70-130 25 <br /> Tert-Butanol 30187-05 19 200 200 210 220 ug/L EPA 82606 12/11/02 955 100 4 86 70-130 25 <br /> Methyl-t-Butyl Ether 30187-05 15 400 400 532 543 ug/L EPA 8260B 12/11/02 947 97 5 291 70-130 25 <br /> Benzene 30284-03 <0 50 400 400 39 0 381 ug/L EPA 8260B 12/11/02 975 952 2 36 70-130 25 <br /> Toluene 3028403 <0 50 400 400 39 8 38 8 ug/L EPA 8260B 12/11/02 994 971 242 70-130 25 <br /> Tert-Butanol 30284-03 1100 200 200 1370 1390 ug/L EPA 8260B 12/11/02 124 132 6 74 70-130 25 <br /> Methyl-t-Butyl Ether 30284-03 <0 50 400 400 388 387 ug/L EPA 8260B 12/11/02 971 967 0 361 70-130 25 <br /> Approved By J I Kiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />