Stantec // Oceana Gold NZ // Transportation Assessment - Waihi North Project 20 − Rock storage pad, − Private road connection to Willows Rd and site connecting roads; − Other civil work including sumps and ponds, sewage plant, compressor, explosives magazine, etc.; − A parking area for all anticipated on-site vehicles (including buses). • Power, communications and other utilities supply: A buried services trench connecting the Willows Road farm to the existing Waihi plant that will carry 33kv power, fibre optic for communications , and several waste and clean water services. It is understood these lines will be buried in a trench on OceanaGold land and then follow the Willows Road and SH25 corridors to the west of the Ohinemuri River bridge (approximately 1 km south of Willows Road intersection), then overland to reach the Waihi Processing Plant. Work within the road corridor is subject to separate Corridor Access approvals to be sought when the details of construction are better understood. Any work in the corridor will be subject to a Construction Traffic Management Plan. • Willows Road extension between the end of the existing formed road and the entrance to the WUG follows the existing paper road alignment and will be formed to a 6 m sealed carriageway width with design and construction to meet the HDC Engineering Manual. Figure 29 depicts the proposed site infrastructure layout showing buildings, access layout, parking, rock pads and other civil work. It is understood that from SH25, only incidental glimpses of some of the project site surface infrastructure will be available. The project is expected to proceed over five phases: • Phase 1 - Bulk earthworks and planting, 24 months - commencing Q3 2023 • Phase 2A - Surface Infrastructure Development, 15 months - commencing Q3 2023 • Phase 2B - Tunnelling (24 hour/7-day operation)- 50 months - commencing Q1 2024 • Phase 3 - Exploration, (24 Hour/7-day operation) – 10 years - commencing Q3 2025 • Phase 4 - Mining - commencing Q3 2027 • Phase 5 - Site rehabilitation and closure - 25 months - commencing Q1 2032, Q3 2036 Figure 29: Proposed Surface Infrastructure Layout 5.1.1 Workforce and Working Hours Initial works to establish surface infrastructure (including earthworks) will be undertaken on a day shift basis, 6 days per week. In the site development and establishment phase, up to 140 people (FTE total) will be engaged covering
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