GHD | Oceana Gold (New Zealand) Ltd | 12552081 | Waihi North 13 A.8 Willows Farm investigation A site investigation was undertaken at Willows Farm by Golder in October 2020. A total of 13 boreholes were drilled and installed as groundwater monitoring wells. Groundwater level and hydraulic conductivity data collected by Golder in October 2020 has been summarised by GWS (2020). The results of packer tests in WNDD007 (inferred to be installed within the Whiritoa Andesite) indicated a geometric mean of 3.0x10-8 m/s (GWS, 2020). Piezometric groundwater contours have also been interpreted by GWS (2020) using the available site data.
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