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0 <br /> 0 Report Number 20 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 6/24/2002 <br /> Project Name 620 W. Charter Way, <br /> Project Number 244-0778 <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 26868-28 <0 0050 00395 00399 00405 00398 mg/Kg EPA 8260B 6121102 102 997 274 70-130 25 <br /> Toluene 26868-28 <0 0050 00395 00399 00373 00358 mg/Kg EPA 82606 6121102 944 897 508 70-130 25 <br /> Tert-Butanol 26868-28 <0 0050 0 198 0200 0 184 0 194 mg/Kg EPA 8260B 6121102 931 971 4 17 70-130 25 <br /> Methyl-t-Butyl Ether 26868-28 <0 0050 00395 00399 00438 00440 mg/Kg EPA 8260B 6121102 111 110 0 610 70-130 25 <br /> Benzene 26909-02 069 400 400 38 8 380 uglL EPA 82608 6117102 952 933 2 04 70-130 25 <br /> Toluene 26909-02 <0 50 400 400 372 359 uglL EPA 8260E 6/17/02 930 89 7 353 70-130 25 <br /> Tert-Butanol 26909-02 14 200 200 205 206 uglL EPA 82606 6117102 95 7 96 3 0 588 70-130 25 <br /> Methyl-t-Butyl Ether 26909-02 <0 50 400 400 287 281 ug/L EPA 82606 6117102 71 8 70 3 200 70-130 25 <br /> Benzene 26901-02 <0 50 400 400 428 416 uglL EPA 8260B 6114102 107 104 287 70-130 25 <br /> Toluene 26901-02 <0 50 400 400 394 381 ug/L EPA 8260E 6114102 985 952 333 70-130 25 <br /> Tert-Butanol 26901-02 9100 200 200 7520 7640 uglL EPA 8260B 6114102 000 000 000 70-130 25 <br /> Methyl-t-Butyl Ether 26901-02 1100 400 400 1080 1070 uglL EPA 8260E 6114102 000 000 000 70-130 25 <br /> Benzene 26905-05 <0 50 400 400 389 380 uglL EPA 8260E 6114102 974 950 242 70-130 25 <br /> Toluene 26905-05 0 91 400 400 39 9 386 uglL EPA 8260B 6114102 976 94 2 357 70-130 25 <br /> Tert-Butanol 26905-05 <5 0 200 200 185 185 uglL EPA 82606 6114102 925 926 0 108 70-130 25 <br /> Methyl-t-Butyl Ether 26905-05 <0 50 400 400 340 337 uglL EPA 8260B 6114102 851 842 109 70-130 25 <br /> Benzene 26890-09 <0 50 400 400 38 6 374 uglL EPA 8260B 6115102 964 93 4 3 13 70-130 25 <br /> Toluene 26890-09 <0 50 400 400 39 0 37 9 ug/L EPA 82608 6115102 974 94 8 270 70-130 25 <br /> i <br /> i <br /> Approved By J l Kill <br /> KIFF ANALYTICAL, LLC } <br /> 720 Olive Drive, Suite D Davis, CA 95616 530-2974800 <br />