Aspect
Potential Impact
Risk Rating
Risk Controls
Residual Risk Rating
Treatment
L
C
R
L
C
R
values of and due to
the excavation and placement of
are unlikely given the significant existing
unplanned releases
historical ARD generating mine waste
disturbance within the area associated with the
or discharges,
into TSFs
Western Dump placement and construction of
including spills and
the water diversion tunnel. The construction of
When tailings are appropriately
leaks of contaminants
the Upper Mundic Gully TSF will likely improve
managed in a TSF, the geochemical
impacts to land as the currently exposed face
properties of the treated tailings are
of the Western Dump will be sealed.
not expected to cause harm to the
receiving environment
TSF designed by RPEQ in
accordance with DETSI guidelines
and ANCOLD best practice
Annual regular maintenance
inspections in accordance with EA
conditions in Schedule H and the
Manual for Assessing Consequence
Categories and Hydraulic
Performance of Structures
(ESR/2016/1933) .
Pre-clearance fauna surveys will be
Considering the historical disturbance and
Clearing of potential,
undertaken by suitability qualified and
degraded nature of the project area, including
Nature
but degraded, habitat
Likely
Moderate 17
experiences persons to identify
Likely
Insignificant 7
existing ARD contamination in soil, the
conservation
for several MSES
individual fauna at direct risk from
modified hydrology, and the presence of
clearing
dense patches of weeds, it is likely that the
204
Wulguru Technical Services Pty Ltd – Supporting Information to Amend an Environmental Authority
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