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I <br /> I I <br /> i <br /> Report Number 28246 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 09/16/2002 <br /> I <br /> Project Name 440 W. Charter Way, <br /> Project Number 020823-BM1 <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 ; Valuell Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> TPH as Diesel Blank <50 1000 1000 955 823 ug/L M EPA 8015 914102 955 823 148 70-130 25 <br /> Benzene 28246-03 94 399 39 8 1121 123 ug/L EPA 8260E 8129102 674 721 6 71 70-130 25 <br /> Toluene 28246-03 3 6 399 39 8 421 433 ug/L EPA 8260B 8129102 964 99 7 332 70-130 25 <br /> j Tert-Butanol 28246-03 24 200 199 220 218 ug/L EPA 82608 8129102 981 972 0 905 70-130 25 <br /> Methyl-t-Butyl Ether 28246-03 1 3 39 9 398 35 5 351 ug/L EPA 8260B 8129102 85 5 84 7 0 977 70-130 25 <br /> I <br /> Benzene 28245-04 <0 50 400 400 ! .92 383 ug/L EPA 82608 8129102 980 95 6 248 70-130 25 <br /> Toluene 28245-04 <0 50 400 400 40 0 39 8 ug/L EPA 8260B 8/29/02 100 99 4 0 627 70-130 25 <br /> Tert-Butanol 28245-04 <5 0 200 200 204 209 ug/L EPA 8260E 8/29102 102 105 263 70-130 25 <br /> i Methyl-t-Butyl Ether 28245-04 <0 50 400 400 375 386 ug/L EPA 8260E 8/29/02 93 7 964 2 89 70-130 25 <br /> I <br /> I Benzene 28246-07 <0 50 400 400 452 436 ug/L EPA 8260E 8/28102 113 109 358 70-130 25 <br /> Toluene 28246-07 <0 50 400 400 38 6 373 ugIL EPA 8260B 8128/02 96 5 932 348 70-130 25 <br /> Tert-Butanol 28246-07 <5 0 200 200 1198 201 ug/L EPA 8260B 8128102 99 3 100 132 70-130 25 <br /> Methyl-t-Butyl Ether 28246-07 <0 50 400 400 45 0 443 ug/L EPA 82608 8128102 112 111 1 50 70-130 25 <br /> Benzene 28271-01 <0 50 400 400 429 421 ugIL EPA 8260E 8129102 107 105 190 70-130 25 <br /> 1 Toluene 28271-01 <0 50 400 400 39 8 378 ugIL EPA 8260B 8129102 994 945 5 05 70-130 25 <br /> 1 Tert-Butanol 28271-01 320 200 200 i 524 516 ug/L EPA 8260B 8129102 104 999 379 70-130 25 <br /> Methyl-t-Butyl Ether28271-01 <0 50 400 400 41 8 425 ug/L EPA 8260B 8/29102 104 106 1 73 70-130 25 <br /> i <br /> I <br /> I <br /> Approved By J I Kiff <br /> • KIFF ANALYTICAL, LLC <br /> 720',Olivll Drive <br /> , Suite Do, CA 95616 530-297-4800 <br />