SECTION 4 Willows Farm Infrastructure C:\D Data\GWS C Drive\GWS\Client Files\1344 OGL - WKP\4 Deliverables\WUG Effects Summary\June 2022\WNP Groundwater Effects Summary_Final_Rev_0.docx 13 4. Willows Farm Infrastructure 4.1 Description The main elements of the Willows Farm infrastructure that could potentially result in effects on groundwater/surface waters are: tunnel portal and decline, vent shaft and temporary rock stack pile. Figure 14 shows the portal, decline and vent shaft location. Figure 15 shows the waste rock stack footprint. Figure 14 Willows Farm Access Tunnel (modified after GHD 2020) Figure 15 Willows Temporary Rock Stack The Willows Farm access tunnel consists of a portal driven from above the water table. The tunnel is 5.8 m wide and 6.0 m heigh and is 1.3 km in length. The tunnel connects the Willows Farm Vent shaft where it meets the dual tunnels and ore transport tunnel.
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