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Report Number 29296 <br /> QC Report . Matrix Spike!Matrix Spike Duplicate Date 10/29/02 <br /> Project Name 2575 Country Club Blvd. <br /> Project Number 244-0783 <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 Anal ed Recov Recovil Diff Limit Limit <br /> Benzene 29293-02 <0 50 400 400 390 38 0 ug/L EPA 8260B 10/23/02 976 951 2 57 70-130 25 <br /> Toluene 29293-02 <0 50 400 400 406 396 ug/L EPA 82608 10/23/02 102 99 0 2 52 70-130 25 <br /> Tert-Butanol 29293-02 <5 0 200 200 200 199 ug/L EPA 8260B 10/23/02 998 99 3 0 472 70-130 25 <br /> Methyl-t-Butyl Ether 29293-02 <0 50 400 400 396 389 ug/L EPA 8260B 10/23/02 990 972 1 73 70-130 25 <br /> Benzene 29314-26 <0 50 400 400 402 400 ug/L EPA 8260E 10/26/02 100 100 0 449 70-130 25 <br /> Toluene 29314-26 <0 50 400 400 411 41 3 ug/L EPA 82608 10/26/02 103 103 0 388 70-130 25 <br /> Tert-Butanol 29314-26 29 200 200 240 236 ug/L EPA 82608 10/26/02 106 104 1 82 70-130 25 <br /> Methyl-t-Butyl Ether 29314-26 180 400 400 281 283 ug/L EPA 8260B 10/26/02 249 255 228 70-130 25 <br /> i <br /> Benzene 29296-02 <0 50 400 400 399 38 6 ug/L EPA 82603 10/22/02 99 7 966 313 70-130 25 <br /> Toluene 29296-02 <0 50 400 400 41 7 399 ug/L EPA 82608 10/22102 104 99 7 4 56 70-130 25 <br /> Tert-Butanol 29296-02 6000 200 200 7260 7190 ug/L EPA 8260B 10/22/02 610 574 597 70-130 25 <br /> Methyl-t-Butyl Ether 29296-02 6600 400 400 2950 2870 ug/L EPA 8260B 10/22/02 000 000 000 70-130 25 <br /> I <br /> i <br /> I <br /> II <br /> I <br /> Approved By JI Kiff <br /> KIFF ANAjJICAL, LLC <br /> 2795 2nd 5tSuite 30Cis, CA 95616 530-297-4800 <br /> �� II <br />