Mount Morgan Mine Upper Mundic Gully TSF EA Amendment

Table 5

Proposed modifications and new conditions within the EA

Schedule Reference

Current Wording

Proposed Wording

Justification

Schedule A – General

A14

All exploration activities carried out at the licensed place must comply with each of the Standard Environmental Conditions contained in the most recent version of the Eligibility criteria and standard conditions for exploration and mineral development projects— ESR/2016/1985. In respect to the requirements of condition A14, where a condition of this Environmental Authority refers to a matter addressed in the Eligibility Criteria and Standard Conditions for Exploration and Mineral Development Projects (ESR/2016/1985), the condition of this Environmental Authority prevails. Unless otherwise permitted under the conditions of this environmental authority, contaminants must only be released from the process plant to the Sandstone Gully Tailings Storage Facility A Water Management Plan that considers all mine features specified in Table A1 - Authorised mining activities and locations must be developed by a suitably qualified and experienced person and implemented, by 1 October 2022.

None – delete condition

Supports removal of exploration domain and activities from EA

All exploration activities carried out at the licensed place must comply with each of the Standard Environmental Conditions contained in the most recent version of the Eligibility criteria and standard conditions for exploration and mineral development projects—ESR/2016/1985.

A15

None – delete condition

In respect to the requirements of condition A14, where a condition of this Environmental Authority refers to a matter addressed in the Eligibility Criteria and Standard Conditions for Exploration and Mineral Development Projects (ESR/2016/1985), the condition of this Environmental Authority prevails.

Supports removal of exploration domain activities from EA

Schedule W – Water

W2

Unless otherwise permitted under the conditions of this environmental authority, contaminants must only be released from the process plant to the Sandstone Gully Tailings Storage Facility and the Upper Mundic Gully Tailings Storage Facility

Facilitates that Upper Mundic Gully TSF can receive contaminants

W3

A Water Management Plan that considers all mine features specified in Table A1 - Authorised mining activities and locations must be developed by a suitably qualified and experienced person and implemented, by 1 October 2022. 30 May 2026

Updated condition W3 to allow Heritage to update the WMP to include the Upper Mundic Gully TSF. Amendment to the WMP is required regardless under condition W5— updating condition W3 will set the new date from which the updated plan must be implemented and then annually reviewed.

Project number: 25B061

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