47 Oct 2021 OceanaGold WNP Project, Waihi - Archaeological / Heritage Assessment survived on Gladstone Hill as a result of historic and modern mining, and farming activities. Ohinemuri-Waihi Low Level Water Race T13/817 The Ohinemuri-Waihi Low Level Water Race (described above) can also be picked up as an earth channel in places running southwest around Winner Hill, approximately parallel to a modern farm race, and is between 2 - 3.3m in width (Figure 38 and Figure 46). Much of the route of the race is in farmland and already modified or affected by modern gold mining, tracking and planted in pines around Winner Hill. One section of the water race route to the southeast of Winner Hill is located under the proposed South-East stockpile and will be destroyed. However, this section of the race has been mostly infilled and obscured by farming activities so appears only as a depression c.2m wide across the open paddock. The Ohinemuri-Waihi Low Level Water Race is considered to be of local importance. The section of the race through the proposed stockpile has been infilled, is not readily recognisable and, therefore, considered to have low historic values. Other remaining sections of the race around the southern edge of Winner Hill are in better condition and used as part of a walking track (Hooker May 2003). The proposed WTP additional discharge outfall pipeline located mainly along the Domain Road (unformed) road reserve is located to the south of the South-East stockpile and will avoid the alignment of the Low Level Water Race. Mature pine trees growing on the southern extent of Winner Hill require removal. This is necessary given the age of the trees irrespective of the proposed mining activity. Harvesting operations could impact on the Low Level Water Race but a harvesting plan developed as part of a Heritage NZ Authority application will be developed to avoid or minimise any effects. The Low Level Water Race is pre-1900 in date so any impacts from the proposed stockpile or removal of pines will require mitigation under a general Heritage NZ archaeological Authority that will be applied for to cover the entire Gladstone Pit project to identify and record any pre-1900 archaeological remains. Tramline T13/818 A section of an historic tramline T13/318 runs along the south-eastern and eastern side of Union Hill. This tramline is also a Category C Heritage Item in the Hauraki District Plan (HAU264) (Figure 38). The tramline brought firewood to fire the ore-roasting kilns on Union Hill and sometimes ore from the Waihi mines to the larger Victoria Battery at Waikino. The NZAA site record states that modification of the land at the northern end of the tramline near the conveyor belt has erased evidence of the tramway here. The remaining alignment of this historic tramline is located to the west of the proposed Gladstone Pit project and will not be affected. Silverton Hill Gold Mining Complex and Battery T13/819
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