Mount Morgan Mine Upper Mundic Gully TSF EA Amendment

Table 3.1

MMM groundwater monitoring bore network (information extracted from Robertson GeoConsultants (2010) and the MMM EA EPML00433013

Total depth (m bgs 1 )

Bore ID 2

Easting (MGA94 Zone 56) 7383519.57

Northing (MGA94 Zone 56)

Screen (m bgs 1 )

Screened lithology

Location comments

EA status

Top

Base

Linda Gully – Dumps E of Open Pit Open Cut/Mundic Creek catchment – Sandstone Gully Dam Open Cut/Mundic Creek catchment, Highwall of Mundic West Sump Downstream of Frog Hollow Downstream of Frog Hollow Shepherds Sub-catchment – Downstream of Shepherd’s Outer Dump No. 2 Mill sub-catchment – downgradient of the No.2 Diesel Sump

EA

MB2

232315.85

22.8

19.7

22.7

Saprolite

EA

MB3

7382936.28

231629.07

46.0

43.0

46.0

Waste rock

Bedrock (volcanics)

Non-EA

MB4-D

7382874.74

231838.73

48.5

44.0

47.0

MB5-D MB5-S

7382531.30 7382530.00

232544.26 232538.29

40.0 11.5

12.9

15.9 11.5

Tailings / saprolite

EA EA

Bedrock (volcanics)

8.5

MB7-D

7381414.51

231893.58

16.3

9.5

15.5

Bedrock (tonalite)

EA

MB8-D

7383513.32

232901.46

18.0

15.0

18.0

Fresh volcanics

EA

MB9

7384139.41 7382724.25

233049.11 232095.03

15.0 10.5

9.0 4.5

15.0 10.5

Bedrock (tonalite)

Nelson’s Gully

EA

Open Cut/Mundic Creek catchment- Downstream of Mundic West Sump Open Cut/Mundic Creek catchment – Near No.1 mill thickener

Non-EA

MB11

Saprolite

Bedrock (volcanics)

EA

MB14

7383121.87

232211.49

45.0

12.0

18.0

Table notes: 1. bgs = below ground surface 2. Bore IDs interchangeably include a zero for bore numbers <10 (i.e. MB5-D / MB05-D are the same bore)

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

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