Supporting Technical Assessments

400 520 640 760 880 1000 1120 1240 -0.55 -0.50 -0.45 -0.40 -0.35 -0.30 -0.25 -0.20 -0.15 -0.10 -0.05 0.00 0.05 0.10 May-1988 May-1989 May-1990 May-1991 May-1992 May-1993 May-1994 May-1995 May-1996 May-1997 May-1998 May-1999 May-2000 May-2001 May-2002 May-2003 May-2004 May-2005 May-2006 May-2007 May-2008 May-2009 May-2010 May-2011 May-2012 May-2013 May-2014 May-2015 May-2016 May-2017 May-2018 May-2019 May-2020 May-2021 May-2022 May-2023 May-2024 May-2025 May-2026 May-2027 May-2028 May-2029 May-2030 May-2031 May-2032 May-2033 May-2034 Mine Dewatering RL (m) Settlement (m) F02 F03 F04 F05 F06 F07A F08A F09A F10B F11C F12C F13C F14C F15C F16B F17B F20 F21 F22 F23 F24 F25 F26 F27B F28B F29B Settlement Trigger Level Martha Pit/ Town UG Water Level MUG Empire PC1 UG Bore MUG Edward PC2 UG Bore MUG GW Drawdown Favona Decline OCEANA GOLD (NEW ZELAND) LTD WAIHI NORTH PROJECT Ground Settlement - Zone 5 (Favona Points Only) Settlement Trigger Level 260mm Ref. No: 9049 Date: Feb 2022 Drawn: CL/ET File: 9049-Settlement Engineering Geology Ltd Unit 7C, 331 Rosedale Rd, PO Box 301054, Albany Auckland , NZ Ph (09) 4862546 Fax (09) 4862556 Figure 59

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