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0 • S <br /> Report Number 31338 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 02/21/2003 <br /> Project Name Delta # 4509-T <br /> Project Number <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 /> TPH as Diesel 31418-01 <1 0 200 200 172 166 mg/Kg M EPA 8015 2111/03 862 828 393 60-140 25 <br /> TPH as Diesel Blank <50 1000 1000 862 849 ug/L M EPA 8015 219103 862 849 147 70-130 25 <br /> Benzene 31338-04 <0 0050 00389 00395 00316 00322 mg/Kg EPA 8260B 2111103 81 3 814 0 154 70-130 25 <br /> Toluene 31338-04 <0 0050 00389 00395 00323 00327 mglKg EPA 8260B 2111103 830 828 0 271 70-130 25 <br /> Tert-Butanol 31338-04 <0 0050 0 194 0 198 0 153 0 152 mg/Kg EPA 8260B 2/11/03 785 769 214 70-130 25 <br /> Methyl-t-Butyl Ether 31338-04 <0 0050 00389 00395 00331 00331 mg/Kg EPA 8260B 2111103 85 2 837 1 75 70-130 25 <br /> Benzene 31460-01 <0 0050 00395 00394 00394 00396 mg/Kg EPA 8260B 2113103 998 100 0 600 70-130 25 <br /> Toluene 31460-01 <0 0050 00395 00394 00381 00383 mg/Kg EPA 8260B 2113103 964 970 0 620 70-130 25 <br /> Tert-Butanol 31460-01 <0 0050 0 198 0 197 0 180 0 182 mg/Kg EPA 8260B 2113103 91 1 921 1 16 70-130 25 <br /> Methyl-t-Butyl Ether 31460-01 <0 0050 00395 00394 00366 00369 mg/Kg EPA 8260E 2113/03 927 935 0 913 70-130 25 <br /> Benzene 31411-07 <0 50 400 400 414 392 ug/L EPA 8260B 2/10/03 103 980 534 70-130 25 <br /> Toluene 31411-07 <0 50 400 400 405 385 ug/L EPA 8260B 2110103 101 962 504 70-130 25 <br /> Tert-Butanol 31411-07 <50 200 200 204 197 ug/L EPA 8260B 2110103 102 984 354 70-130 25 <br /> Methyl-t-Butyl Ether 31411-07 21 400 400 427 41 3 ug/L EPA 8260B 2110103 102 98 0 366 70-130 25 <br /> Benzene 31411-06 <0 50 400 400 392 374 ug/L EPA 82608 2/12103 979 935 460 70-130 25 <br /> Toluene 31411-06 <0 50 400 400 441 422 ug/L EPA 82606 2/12103 110 106 431 70-130 25 <br /> Tert-Butanol 31411-06 <5 0 200 200 184 208 ug/L EPA 8260B 2112103 921 104 121 70-130 25 <br /> ti <br /> Approved KIFF ANALYTICAL, LLC By J I Ki <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />