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i <br /> Report Number 36814 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 1/30/2004 <br /> Project Name SINGH <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 36814-05 <0 50 400 400 380 376 ug/L EPA 8260B 1128104 950 941 0 978 70-130 25 <br /> Toluene 36814-05 <0 50 400 400 392 391 ug/L EPA 82608 1/28104 981 97 8 0 332 70-130 25 <br /> Tert-Butanol 36814-05 10 200 200 207 203 ug/L EPA 82608 1128104 986 964 230 70-130 25 <br /> Methyl-t-Butyl Ether 36814-05 76 400 400 472 471 ug/L EPA 8260E 1/28104 99 0 988 0 152 70-130 25 <br /> Benzene 36849-02 260 400 400 324 322 ug/L EPA 82608 1130104 149 144 382 70-130 25 <br /> Toluene 36849-02 120 400 400 169 166 ug/L EPA 8260Q 1/30/04 129 120 696 70-130 25 <br /> Tert-Butanol 36849-02 29 200 200 233 234 ug/L EPA 8260E 1130104 102 102 0 421 70-130 25 <br /> Methyl-t-Butyl Ether 36849-02 22 400 400 660 646 ug/L EPA 82608 1130104 111 108 316 70-130 25 <br /> Benzene 36809-02 <0 50 400 400 441 420 ug/L EPA 8260q 1128104 110 105 483 70-130 25 <br /> Toluene 36809-02 <0 50 400 400 445 410 ug/L EPA 8260E 1128104 111 102 818 70-130 25 <br /> Tert-Butanol 36809-02 <50 200 200 206 204 ug/L EPA 8260P 1128104 103 102 0 940 70-130 25 <br /> Methyl-t-Butyl Ether 36809-02 066 400 400 38 0 41 5 ug/L EPA 8260 1/28104 932 102 906 70-130 25 <br /> I <br /> i <br /> I ' <br /> Approved By J b I <br /> KIFF ANALYTICAL, LLC J 1 <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br /> I <br />