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,, GEM SERVICES <br /> Dawson Project—Tailings Characterization Page ii <br /> List of Tables <br /> Table 1: Geochemistry Sample Descriptions...............................................................................4 <br /> Table 2: Quantitative Mineralogical Analysis of Altered and Unaltered Tailings Samples...........6 <br /> Table 3: Acid Base Accounting Results for Development Rock and Tailings..............................8 <br /> Table 4: Elemental Content of Tailings Samples....................................................................... 11 <br /> Table 5: Geochemical Abundance Index for Tailings Samples ................................................. 11 <br /> Table 6: Elemental Content of Development Rock Samples..................................................... 12 <br /> Table 7: Geochemical Abundance Index for Development Rock Samples ............................... 13 <br /> Table 8: Shake Flask Extraction Results for Development Rock Samples................................ 15 <br /> Table 9: Water Quality of Tailings Filtrate Samples................................................................... 16 <br /> Table 10: Predicted Seepage Quality from FTSF during Operations ........................................23 <br /> Table 11: Comparison of Cover Storage Capacity and 24-hour Storm Values .........................25 <br /> List of Figures <br /> Figure 1: Schematic of Filtered Tailings Storage Facility.............................................................2 <br /> Figure 2: Total Sulfur vs. Sulfide Sulfur .......................................................................................7 <br /> Figure3: ABA NP vs. Carbonate NP ...........................................................................................9 <br /> Figure 4: Carbonate NP vs Acidity Potential..............................................................................10 <br /> Figure 5: Tailings Humidity Cells — Major Elements .................................................................. 19 <br /> Figure 6: Tailings Humidity Cells— Minor Elements ..................................................................20 <br /> Figure 7: Conceptual Closure Cover System.............................................................................24 <br /> Appendices <br /> Appendix A— Mineralogy Report <br /> Appendix B —Static Test Laboratory Reports <br /> Appendix C — Kinetic Test Laboratory Report <br /> DDS/dds Zephyr Dawson_Tailings Characterization_Final_Report,Feb.3,22,1:1 B PM Feb 2022 <br />