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Report Number 40359 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 1016/2004 <br /> Project Name ARC Pump +Welding <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 Leel Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 40359-02 310 400 400 348 339 ug/L EPA 82606 1015104 105 808 263 70-130 25 <br /> Toluene 40359-02 1 2 400 40 0 408 402 uglL EPA 8260B 1015104 990 976 1 50 70-130 25 <br /> Tert-Butanol 40359-02 11 200 200 204 199 ug/L EPA 82606 1015104 96 9 942 288 70-130 25 <br /> Methyl-t-Butyl Ether40359-02 62 400 40 i) 452 461 uglL EPA 82606 1015104 975 999 243 70-130 25 <br /> Benzene 40370-03 0 86 400 400 384 381 uglL EPA 8260E 1014104 93 7 930 0 740 70-130 25 <br /> Toluene 40370-03 <0 50 400 400 370 362 uglL EPA 8260B 1014104 924 904 215 70-130 25 <br /> Tert-Butanol 40370-03 <5 0 200 20C 193 193 ug/L EPA 82606 1014104 964 964 00205 70-130 25 <br /> Methyl-t-Butyl Ether40370-03 95 400 400 133 134 ug/L EPA 82606 1014104 938 965 2 85 70-130 25 <br /> Benzene 40397-02 23 400 400 380 373 ug/L EPA 82608 1015104 893 874 217 70-130 25 <br /> Toluene 40397-02 <0 50 400 400 38 3 376 ug/L EPA 8260B 1015104 95 8 941 1 79 70-130 25 <br /> Tert-Butanol 40397-02 13 200 200 192 196 ug/L EPA 8260E 1015104 896 91 7 224 70-130 25 <br /> Methyl-t-Butyl Ether40397-02 22 400 400 520 500 ug/L EPA 8260E 1015104 746 69 6 698 70-130 25 <br /> I <br /> 4 <br /> KIFF ANALYTICAL, LLC Approved By Joe iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />