Mount Morgan Mine Upper Mundic Gully TSF EA Amendment

2.5 Assessment Level Decision Under s.228 of the EP Act, the administering authority must decide whether the proposed amendment is a minor or a major amendment. To support the assessment level decision for this application, an assessment against the minor amendment criteria has been undertaken and provided in Table 14. As referenced in the Department’s ‘Major and Minor Amendments Guideline’ (ESR/2015/1684), it is noted that an amendment application that is not considered a minor amendment, shall be considered a major amendment. Table 14. Minor amendment criteria

Criteria

Justification

(a) Is not a change to a standard condition identified in the EA as a standard condition, other than a condition conversion or replacing a standard condition with a standard condition for the ERA; and (b) Does not significantly increase the level of environmental harm caused by the relevant activity; and

Criteria satisfied – The EA contains site specific conditions

Criteria satisfied. The proposed amendments do not significantly increase the level of environmental harm. Refer to Section 7 for the impact assessment and Section 8 for the environmental risk assessment. Management plans are proposed as conditions to manage impacts associated with MSES Criteria satisfied. The proposed amendments will not change rehabilitation objectives in the EA Criteria satisfied. The proposed amendments will not increase currently approved processing rates associated with the relevant activity (Schedule 2-31) Criteria satisfied. The proposed amendments do not relate to a new relevant resource tenure for the EA

(c) Does not change any rehabilitation objectives in the EA in a way likely to result in significantly different impacts on environmental values than the impacts previously permitted under the EA; and (d) Does not significantly increase the scale or intensity of the relevant activity; and (e) Does not relate to a new relevant resource tenure for the EA that is— (i) a new mining lease; or (ii) a new petroleum lease; or (iii) a new geothermal lease under the Geothermal Energy Act 2010; or (iv) a new greenhouse gas injection and storage lease under the Greenhouse Gas Storage Act 2009; and (f) Increases the existing surface area for the relevant activity by 10% or less; and

Criteria not satisfied. DETSI issued an ALD on 26 November 2025 advising that the proposed amendment to the EA is a major amendment Not applicable. The EA amendment application is not for a petroleum activity.

(g) for an EA for a petroleum activity: i.

involves constructing a new pipeline that does not exceed 150km in length; and

Project number: 25B061

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