Original EA Amendment

Contents

Acronyms and abbreviations

1 3 3 3 4 4 4 5 5 7 7 8 8 8 9

1.

Introduction

1.1 1.2 1.3 1.4 1.5

Overview

Groundwater monitoring obligations

Purpose of this report Scope and limitations

Assumptions

2.

Site setting

2.1 2.2

Site history

Climate

2.2.1 2.2.2

Temperature

Rainfall

2.3 2.4 2.5

Topography and drainage

Geology

Hydrogeology

2.5.1

Groundwater level and flow

10 12 14 14 15 17 17 17 17 17 17 20 22 22 22 23 24

3.

Groundwater monitoring network

3.1 3.2 3.3

Groundwater monitoring EA requirements Monitoring and sampling methodology

Water quality guidelines

4.

MMM groundwater monitoring results analysis

4.1 4.2

Monitoring completed Groundwater quality

4.2.1 4.2.2 4.2.3 4.2.4

Overview

Assessment approach

Water quality guidelines exceedance results Mann-Kendall statistical trend analysis

4.3

Quality assurance & quality control

4.3.1 4.3.2

Field QA/QC

Laboratory QA/QC

5. 6.

Conclusions and recommendations

References

GHD | Heritage Minerals Pty Ltd | 12638246 | Groundwater Quality Review 2024 iii

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