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Report Number 29495 <br /> QC Report Matrix Spike!Matrix Spike Duplicate Date 11/11/02 <br /> Project Name Singh -Tracy <br /> Project Number 3254 <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 29495-01 <0 50 400 400 411 409 ug/L EPA 82608 11/3102 103 102 0 561 70-130 25 <br /> Toluene 29495-01 <0 50 400 400 456 450 ug/L EPA 82606 1113102 114 112 119 70-130 25 <br /> Tert-Butanol 29495-01 <50 200 200 212 211 ug/L EPA 8260E 1113/02 106 105 0 388 70-130 25 <br /> Methyl-t-Butyl Ether 29495-01 13 400 400 509 512 ug/L EPA 8260B 11/3/02 957 965 0 858 70-130 25 <br /> Benzene 29488-08 <0 50 400 400 39 9 388 ug/L EPA 8260B 1113102 99 7 970 2 74 70-130 25 <br /> Toluene 29488-08 <0 50 400 400 423 420 ug/L EPA 8260E 1113102 106 105 0 617 70-130 25 <br /> Ted-Butanol 29488-08 <5 0 200 200 202 205 ug/L EPA 82608 1113/02 101 103 141 70-130 25 <br /> Methyl-t-Butyl Ether 29488-08 <0 50 400 400 406 410 ug/L EPA 8260B 1113/02 102 102 0 882 70-130 25 <br /> Benzene 29564-03 220 98 0 976 292 299 ug/L EPA 8260B 1119102 679 758 110 70-130 25 <br /> Toluene 29564-03 36 980 976 126 125 ug/L EPA 8260E 11/9102 91 1 909 0 173 70-130 25 <br /> Tert-Butanol 29564-03 8 0 490 488 522 538 ug/L EPA 82606 1119102 105 109 362 70-130 25 <br /> Methyl-t-Butyl Ether 29564-03 1 6 980 976 106 108 ug/L EPA 8260B 1119/02 106 109 282 70-130 25 <br /> KIFF ANALYTICAL, LLC Approved By J 01 Klff <br /> 2795 2nd St Suite 300 Davis,CA 95616 530-297-4800 <br /> i <br />