Aspect
Potential Impact
Risk Rating
Risk Controls
Residual Risk Rating
Treatment
L
C
R
L
C
R
of the 1.5 m concrete plug to be
located in competent rock
approximately 5 m past the tunnel
inlet.
TSF designed by RPEQ in
accordance with DETSI guidelines
and ANCOLD best practice
Installation of liner in embankment to
reduce potential for seepage
Installation of groundwater monitoring bores
Annual regular maintenance
and ongoing monitoring through proposed
inspections in accordance with EA
Release of tailings/
conditions
conditions in Schedule H and the
water from Upper
Manual for Assessing Consequence
Mundic Gully TSF
Regular seepage analysis of piezometers to
Possible High
13
Unlikely Moderate
9
Categories and Hydraulic
causing impact to
be installed within TSF embankment
Performance of Structures
groundwater
Ongoing tailings sampling during tailings
(ESR/2016/1933) .
receptors
discharge to ascertain chemical parameters of
The results of the geochemical
material
modelling provided in Table 29
indicate that the final tailings solution
analytes do no exceed any of the
HILs and it is concluded that leaching
from the tailings material is benign to
human health
202
Wulguru Technical Services Pty Ltd – Supporting Information to Amend an Environmental Authority
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