Abbreviations
DETSI
Department of Environment, Tourist, Science and Innovation
DSA
Design Storage Allowance
EA
Environmental Authority
ESS
Emergency Storm Storage
FMA
Failure Modes Analysis
Heritage
Heritage Minerals
LOF
life-of-facility
LOM
Lif-of-Mine
m 3
Cubic meter
Mm 3
Millions cubic meter
Mt
Million tonnes
NAPP
Net Acid Producing Potential
OCP
Open Cut Pit
OMS
Operations, Maintenance and Surveillance Manual
PMF
Probable Maximum Flood
PMP
Probable Maximum Precipitation
PRCP
Progressive Rehabilitation and Closure Plan
SSG
Sandstone Gully
TARP
Trigger Action Response Plan
t
tonne
TMP
Tailings Management Plan
TSF
Tailings Storage Facility
UMG
Upper Mundic Gully
Project No PS213278 Upper Mundic Gully - Tailings Management Plan Mount Morgan Gold Mine Heritage Minerals
WSP March 2026 Page iii
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