EGL Ref: 9215 23 June 2022 Page 73 This report shall only be read in its entirety. File: WAI-985-000-REP-LC-0002_Rev0.docx TABLE 12: SUMMARY OF SCORINGS AND RANKINGS FOR OPTIONS 1 to 6 Option Category Scoring Total Score MCA Ranking No. Description Technical Environmental SocioEconomic and Permitting Project Economics 1 Base Case (Company Preferred Option) Storage 3 Tailings Slurry TSF to RL155 and GOP Tailings Slurry TSF 1.13 0.95 0.98 1.08 4.13 1 2 Maximise Storage 3 Tailings Slurry TSF to RL160 and GOP Lake 1.20 0.95 0.64 1.03 3.81 2 3 Storage 3 Dry Stack TSF and GOP Tailings Slurry TSF 0.95 1.00 0.98 0.46 3.39 5 4 Storage 2 Raise to RL176 Tailings Slurry TSF 0.74 1.00 0.83 1.03 3.59 3 5 Underground paste backfill and GOP paste backfill and reinstate Gladstone Hill 1.00 0.95 0.98 0.26 3.43 6 6 Underground paste backfill and GOP paste backfill and Storage 1A and Storage 2 rock cap 1.00 0.95 0.98 0.51 4.13 4
RkJQdWJsaXNoZXIy MjE2NDg3