Supporting Technical Assessments

© 2021 Microsoft Corporation © 2021 Maxar ©CNES (2021) Distribution Airbus > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > UP UP UP UP 1.5% SLOPE 1.5% SLOPE HEAVY VEHICLE WASHBAY SEDIMENTATION PIT SLOPE 1.5% SLOPE 1.5% SLOPE UP UP UP 3 DS DS DS CT LA LA LA STAIRS SA SA SA NER // // // // // // // // // // // // // // // // CW CW CW CW > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > E E E OH OH OH OH OH OH OH OH OH OH OH OH OH PP PP PP PP PP This Drawing must not be used for Construction unless signed as Approved Date Check Drafting Date Drawn Revision No A1 Rev: Drawing No: Original Size Title Project Check Designer Drafted Scale Design Note: * indicates signatures on original issue of drawing or last revision of drawing Approved Checked Appvd. Cad File No: 27 May 2022 - 3:01 PM P:\221\2210835\CAD\C3D\Design_WKP Mine\Production Drawings\2210835-CD-1503.dwg Plotted By: Hamish Kerr WAIHI NORTH PROJECT POST DEVELOPMENT STORMWATER CATCHMENTS WAI-981-000-DWG-CI-1503 B AMR AWS - 1:1500 @ A1 A FOR INFORMATION BKH HEK JvZ 06.04.22 B FOR INFORMATION: UPDATED PROJECT NAME RTS HEK EG 26.05.22 2210835 Engineer: P GLOWREY PRC No.: PTR No.: TIN No.: Date issued.: Date issued.: Issued at.: Sheet No. Drawings as an instrument of service are the property of OceanaGold, and, as such, must not be reproduce or copied in part or in full without permission. All drawing are to be return when no longer in use. 1503 FOR INFORMATION NOT FOR CONSTRUCTION BECA DWG No: 2210835-CD-1503.DWG Meters 0 100 200 EXISTING OVERLAND FLOW TO RIVER EXISTING WETLAND LEGEND MAJOR CONTOUR MINOR CONTOUR MAJOR CONTOUR EXISTING MINOR CONTOUR DESIGN C-5A C-2A C-4A C-3E C-1A C-6A C-1B C-1A C-6B C-6C C-2B C-5B C-3A C-3B C-3C C-3D SURFACE FACILITIES AREA EXPLOSIVES MAGAZINE ROCK STACK REFER SHEET 2210835-CD-1505 REFER SHEET 2210835-CD-1506 MATAURA STREAM C-4B NOTES 1. REFER TO SHEETS 2210983-CD-1505 AND 2210983-CD-1506 FOR STORMWATER GENERAL ARRANGEMENT PLANS.

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