Original EA Amendment

Item

Stage 1

Stage 2

Low

Seepage may reach area of low potential GDEs along Dee River, however impact is expected to be low based on elevation of creek bed and distance away. Additionally, low and moderate potential GDEs are located respectively west and north of the TSF, however, this is upgradient of the TSF and with the direction of seepage towards the south-east, no significant impacts are expected.

General environmental harm

Same as Stage 1.

Low

No bores used for water supply have been identified in the vicinity of the TSF or in the direction of the groundwater flow. Therefore, loss of agriculture and/or stock is not expected.

General economic loss or property damage

Same as Stage 1.

Overall consequence classification

Low

Low

Project No PS213278 Upper Mundic Gully TSF Stage 1 and 2 DBA and CCA Mount Morgan Gold Mine Heritage Minerals

WSP JUly 2025 Page 36

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