Supporting Technical Assessments

LEGEND Proposed design WRS Clean water diversion Stormwater draininage Design crest Design toe Culvert Under drain SECTION 2 WRS at Q4 WRS at Q4 Northern uphill diversion channel Refer to Table 20: CW Flat Remove topsoil 0.3m above prior to placement of tunnel spoil Grade 2% to crest - 210 m bench only 35 ° 200 mRL 6 m Remove topsoil and weak material in WRS toe footprint 1.0 m depth Stormwater runoff perimeter drain Clean water diversion channel to tributary - steep Refer CW Steep - Table 20 Access track 5.5 m 210 bench - bund out side edge 1m height Establish runoff colleciton channel for future lifts 210 mRl SW Flat drain, Table 20 Contour drain IF THIS MEASUREMENT DOES NOT MATCH WHAT IS SHOWN, THE SHEET SIZE HAS BEEN MODIFIED FROM: A3 0 25 mm TITLE PROJECT NO. REV. PROJECT CONSULTANT PREPARED REVIEW APPROVED YYYY-MM-DD WAIHI NORTH PROJECT - GEOTECHNICAL ASSESSMENT WATER MANAGEMENT - NORTHERN WRS INDICATIVE SECTION 2 (Q4) 20148384 REPORT 017 FIGURE E02 CLIENT OCEANA GOLD (NEW ZEALAND) LIMITED 2021-11-22 ZJ SBC TM \\azaeccfsvm1\Auckland\GIS\Projects-Dynamics\2020\20148384_OGL_Waihi\MapDocuments Information contained in this drawing is the copyright of Golder Associates (NZ) Ltd. Unauthorised use or reproduction of this plan either wholly or in part without written permission infringes copyright. © Golder Associates (NZ) Ltd. COPYRIGHT 1. Schematic only, not to be interpreted as an engineering design or construction drawing. 2. Figure must be printed in colour. NOTES

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