Table 2.2
Basis of Design
Description
Criteria
Unit Basis Value
Source
General
Existing ground combined surface: — Mount_Morgan_2007.dxf – site contours provided 13 April 2016 — Mt_morgan_1604_e10.poi – April 2016 site LiDAR provided 6 May 2016 Pre mine combined surface: — Pre_mining_surf.dat — Premine_Topo_Robertson_ Geoconsultant.DXF
Design survey
-
-
Heritage
Survey system
-
-
MGA94 Zone 56
Heritage
Survey datum
-
-
Australian Height Datum
Heritage
— Stage 1: Significant — Stage 2: High B — Stage 1: Low — Stage 2: Significant
Consequence Category ANCOLD
-
WSP [1]
Consequence Category DETSI
-
WSP [1]
TSF Embankment
Crest width
Light traffic
m 10
WSP
Batter slopes
Liner requirement
H:V 2.5:1
WSP
Embankment
Mine spoil
-
Zoned with upstream liner
WSP
Stage 1 – Crest elevation Stage 2 – Crest elevation
-
RL m 360
WSP
-
RL m 390
WSP
Tailings
Specific gravity of tailings
-
-
3.02
Heritage
Slurry solids content -
% 40
Heritage
Tailings average settled dry density
-
t/m³ 1.10
WSP
Tailings beach slope
-
% 0.5
Heritage
Water management
Minimum freeboard
-
m 1
WSP
Project No PS213278 Upper Mundic Gully - Tailings Management Plan Mount Morgan Gold Mine Heritage Minerals
WSP March 2026 Page 5
Powered by FlippingBook