1. Introduction
1.1 Purpose The purpose of this document is to describe the existing environmental values and assess the potential environmental impacts that may arise from the proposed amendments. The proposed amendments relate to: ∕ Authorise the location of the Upper Mundic Gully TSF by including it as a mine feature in the EA; ∕ Update Table A1, and associated Schedule I Figure 1, to address to be determined (TBDs) associated with the pipe corridor and exploration mine features; and ∕ Fix minor erroneous issues in the EA that impact on the processed tailings volumes for discharge into Sandstone Gully TSF. The Queensland Environmental Regulator Regulatory Strategy 2022-2027 articulates that a key focus area for DETSI is to “Regulate proportionate to risk”. To align with this focus area, this supporting information report provides a risk assessment that has been completed to identify potential impacts of the proposed amendments and appropriate mitigation measures. A summary of the risks and likely magnitude of impacts on environmental values is included in Section 2.4 whilst the full risk assessment is provided in Section 8. Throughout this document reference is made to the Upper Mundic Gully TSF (the project) and the Heritage Minerals Tailings Reprocessing (the overall project). 1.2 Project Location The Mount Morgan Mine is located near the town/location of Mount Morgan 38 kilometres south west of Rockhampton in Central Queensland. A site locality map is provided in Figure 1. The Mount Morgan Mine is largely bound to the east by the Dee River and bound to the north and west by undulating hills. Mount Morgan was founded as a gold mining town in 1882, with the Mount Morgan Mine located directly adjacent to the west. In addition to mining resources, the predominant land uses in the surrounding region is cattle grazing within native vegetation, with some areas of forestry and irrigated cropping. This region experiences a sub-tropical climate, with distinctive wet and dry seasons, with approximately 70 percent of rain fall during the wet season (between November and April). The Mount Morgan Mine is located alongside the Dee River, forming part of the Dee River Catchment. The catchment forms part of the larger Fitzroy River system within the Fitzroy River basin. The Dee River generally flows south to west into the Don River and Dawson River before reaching the Fitzroy River where it enters the ocean at Port Alma, downstream of Rockhampton.
Project number: 25B061
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