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0 <br /> Report Number 40774 <br /> QC Report Matrix Spike/Matrix Spike Duplicate Date 11/2/2004 <br /> Project Name SINGH <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 Level Value Value Units Method Analyzed Recov Recov Diff Limit Limit <br /> Benzene 40774-01 <0 50 400 400 394 386 ug/L EPA 8260B 10/30/04 985 964 208 70-130 25 <br /> Toluene 40774-01 <0 50 400 400 389 380 ug/L EPA 8260B 10/30/04 974 94 9 257 70-130 25 <br /> Tert-Butanol 40774-01 <50 200 200 193 192 ug/L EPA 8260B 10/30/04 966 962 0 417 70-130 25 <br /> Methyl-t-Butyl Ether40774-01 4 2 400 400 468 463 uglL EPA 82606 10/30/04 107 105 121 70-130 25 <br /> Benzene 40769-05 19 400 400 443 416 ug1L EPA 8260B 11/1104 106 994 654 70-130 25 <br /> Toluene 40769-05 <0 50 400 400 429 380 ug/L EPA 8260B 1111104 107 950 122 70-130 25 <br /> Tert-Butanol 40769-05 <5 0 200 200 202 195 ug/L EPA 8260B 1111104 101 977 3 25 70-130 25 <br /> Methyl-t-Butyl Ether 40769-05 280 400 400 322 322 ug/L EPA 8260B 1111104 104 103 100 70-130 25 <br /> Approved By geiff <br /> KIFF ANALYTICAL, LLC <br /> 2795 2nd St,Suite 300 Davis,CA 95616 530-297-4800 <br />