SECTION A C003 2500 SCALE 1 : GLADSTONE PIT SHELL BACKFILL FINAL TAILINGS LEVEL RL1103.0m RL1060.0m PRE-MINING SURFACE BOREHOLE INLET TO COLLECTION SUMP BACKFILLED WITH NO-FINES COARSE ROCKFILL. SEEPAGE AND GROUNDWATER RECOVERY BORE. SEE NOTE 2. ENSURE PIT SURFACE GRADES TOWARDS SUMP 1 - SECTION A C006 2500 SCALE 1 : FINAL TAILINGS LEVEL RL1103.0m RL1060.0m PIT SLOPE FLATTENED FINAL TAILINGS LEVEL. SEE NOTE 1. PRE-MINING SURFACE BACKFILL 1.5 1 1.5 1 EXISTING SLIP SURFACE MOSTLY MINED OUT GLADSTONE PIT SHELL NSL NSL 10.0m 10.0m CONTINUE LINER UP SLOPE TO RL1105m BITUMINOUS GEOMEMBRANE LINER 2m WIDE, SUB-25mm LINER SUBGRADE ROM BACKFILL GLADSTONE PIT SHELL 1 1.5 TYPICAL BACKFILL DETAIL SCALE 1:500 SAND WELL GRADED FINER ROCKFILL 0.5m 0.5m GEOTEXTILE BIDIM A34 OR APPROVED EQUIVALENT NO-FINES COARSE ROCKFILL DETAIL 1 - 50 SCALE 1 : GHD STANDARD A1 ATTRIBUTE BLOCK CAD File No.: GHD_G_0045_T Updated: 08-07-03 Version: 1.1 This Drawing must not be used for Construction unless signed as Approved GHD STANDARD A1 SHEET CAD File No.: GHD_G_0045 Updated: 08-07-03 Version: 1.1 Date Check Drafting Plot Date: Cad File No: Date Drawn Revision No A3 Rev: Drawing No: Original Size Title Project Client Check Designer Drawn Scale Design Conditions of Use. This document may only be used by GHD's client (and any other person who GHD has agreed can use this document) for the purpose for which it was prepared and must not be used by any other person or for any other purpose. DO NOT SCALE Note: * indicates signatures on original issue of drawing or last revision of drawing 2 Salamanca Square Hobart TAS 7000 Australia GPO Box 667 Hobart TAS 7001 T 61 3 6210 0600 F 61 3 6210 0601 E [email protected] W www.ghd.com 17 June 2022 - 2:26 PM G:\51\12537997\CADD\Drawings\12537997-C004-C005 - UPDATED.dwg Plotted By: Wesley Herweynen (Project Director) Approved Job Manager Project Director PRELIMINARY OCEANA GOLD NEW ZEALAND LTD GLADSTONE PIT TSF PRE-FEASIBILITY STUDY SECTIONS AND DETAILS 12537997-C004 B V. JENKINS W. HERWEYNEN AS SHOWN A ISSUED FOR CLIENT COMMENT VJ WH RL 16.04.21 B ISSUED FOR CONSENTING VJ WH RL 17.06.22 0 SCALE 1:500 AT ORIGINAL SIZE 15m 5 10 0 1.5m 0.5 1.0 SCALE 1:50 AT ORIGINAL SIZE NOTES: 1. INSTALL SLOPE MONITORING INSTRUMENTATION FOR POST CLOSURE PERFORMANCE MONITORING. 2. NOMINALLY 150mm CASED BOREHOLE WITH INLINE PUMP. FLOW METER AT BOREHOLE OUTLET. RETURN FLOWS TO PIT FOR RECOVERY BY PONTOON PUMP. 0 75m 25 50 SCALE 1:2500 AT ORIGINAL SIZE
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