GHD | Oceana Gold (New Zealand) Limited | 12537997 | Gladstone Pit TSF 28 Figure 17 GOP TSF storage curve 4.6 Construction schedule Figure 18 outlines a high-level schedule for the GOP TSF. The schedule is based on the following assumptions: – Backfill placement is completed at a rate of 5,000 m3/day (based on one construction front) – Liner install is completed at a rate of 400 m2/day during active liner placement – Day shift only for backfill and liner – Backfill and liner placement cannot happen simultaneously due to access restrictions and safety. – GOP TSF will be filled in two stages: Stage 1 to RL 1080 m and Stage 2 to RL 1103 m. – GOP TSF acts as a supplementary storage to the primary TSFs on site, with tailing deposition per the schedule shown in the basis of design (Table 3). – Filling of GOP TSF does not commence until completion of underground workings in the vicinity of GOP. 1055 1060 1065 1070 1075 1080 1085 1090 1095 1100 1105 1110 0 500,000 1,000,000 1,500,000 2,000,000 2,500,000 Elevation, RL (m) Tailings storage (tonnes)
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