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0 • Report Number: 3860 <br /> QC Report : Matrix Spike/ Matrix Spike Duplicate Date : 6/15/2004 <br /> Project Name : Former Beacon 12474 <br /> Project Number: 1474.47 <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 38672-05 2.2 39.9 39.8 40.8 41.3 ug/L EPA 8260B 6112104 96.6 98.0 1.39 70-130 25 <br /> Toluene 38672-05 <0.50 39.9 39.8 38.8 39.5 ug/L EPA 8260B 6112104 97.1 99.2 2.13 70-130 25 <br /> Tert-Butanol 38672-05 19 200 199 207 214 ug/L EPA 82606 6112104 94.4 97.9 3.67 70-130 25 <br /> i Methyl-t-Butyl Ether 38672-05 60 39.9 39.8 99.8 96.5 ug/L EPA 82608 6112104 99.4 91.5 8.27 70-130 25 <br /> I I <br /> Benzene 38661-04 <0.50 40.0 40.0 39.7 38.4 ug/L EPA 8260B 6/11104 99.2 96.0 3.27 70-130 25 <br /> Toluene 38661-04 <0.50 40.0 40.0 38.1 38.6 ug/L EPA 82608 6111104 95.3 96.4 1.21 70-130 25 <br /> Tert-Butanol 38661-04 <5.0 200 200 201 200 ug/L EPA 8260B 6111104 100 99.9 0.499 70-130 25 <br /> Methyl-t-Butyl Ether 38661-04 <0.50 40.0 40.0 43.0 42.6 ug/L EPA 8260B 6111104 108 106 0.958 70-130 25 <br /> Benzene 38661-01 <0.50 40.0 40.0 41.3 39.9 ug/L EPA 82608 6111104 103 99.7 3.62 70-130 25 <br /> Toluene 38661-01 <0.50 40.0 40.0 40.5 39.3 ug/L EPA 8260B 6111104 101 98.3 2.89 70-130 25 <br /> Tert-Butanol 38661-01 <5.0 200 200 230 212 ug/L EPA 8260E 6111104 115 106 8.30 70-130 25 <br /> Methyl-t-Butyl Ether38661-01 1.4 40.0 40.0 43.3 41.5 uglL EPA 82608 6111104 105 100 4.36 70-130 25 <br /> Benzene 38718-02 100 40.0 40.0 137 136 ug/L EPA 8260B 6/12104 79.5 77.7 2.24 70-130 25 <br /> Toluene 38718-02 17 40.0 40.0 53.0 53.0 ug/L EPA 8260B 6112/04 90.3 90.4 0.0997 70-130 25 <br /> Tert-Butanol 38718-02 <5.0 200 200 248 230 ug/L EPA 8260B 6112104 124 115 7.64 70-130 25 <br /> Methyl-t-Butyl Ether 38718-02 <0.50 40.0 40.0 34.0 33.8 ug/L EPA 8260B 6/12104 85.1 84.4 0.857 70-130 25 <br /> I <br /> E <br /> KIFF ANALYTICAL, LLC Approved By: jo iff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-4800 <br />