B-6 – Area 6 – Assessment of Environmental Effects 27 3. PROJECT DESCRIPTION 3.1 OVERVIEW Non ore-bearing rock from the GOP will be used to construct TSF3, construct and rehabilitate the GOP TSF and backfill underground mine workings. While some additional capacity also exists in the Central and Eastern Stockpiles adjacent to TSF1A and TSF2, there will be a surplus of rock that requires storage in a separate rock stack. As such, a new rock repository, being the NRS, is proposed to accommodate surplus rock associated with the Waihi North Project, prior to its reuse for the purposes described above. The NRS will accommodate rock predominantly from the GOP but may include some development rock from the WUG. The size of the NRS may fluctuate over time as temporarily stored rock is taken and reused but at its maximum extent the NRS is designed to a nominal elevation of 173 m RL and to accommodate up to 7.0 Mm3 of rock. At its maximum extent, the NRS footprint will encompass the existing Northern Stockpile area and adjacent land as is shown in Figure 14.
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