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In last year's Report we stated that we planned to
develop a biodiversity register in 2012. While the
Register was not developed, we worked closely
with our parent, CLP, to develop a new CLP Group-
wide Biodiversity Policy Statement, Guidelines and
Tool. These documents will assist with incorporating
the assessment of biodiversity risks into internal
pre-investment environmental risk assessment
process. This initiative was developed according
to the principles laid out in the latest International
Finance Corporation's Performance Standard 6.
The documents will also guide the
establishment of our biodiversity register.
In Victoria the State biodiversity offset policy requires
positive management interventions to improve or
restore the conservation value of a loss area or halt
its degradation through a 'like-for-like' offset. The
'like-for-like' criteria and improvement requirements
imply that there is an overall net gain in biodiversity
in offset areas in relation to loss areas. Species
diversity is measured annually in the offset areas
to confrm the effectiveness of the offset area.
We have developed the Yallourn Mine land
rehabilitation program to meet our obligations under
this requirement. In 2012, we rehabilitated 70.0
hectares against a Plan of 69.2 hectares. Despite
widespread fooding of the mine throughout the
second half of the year, the rehabilitation plan
was reallocated to enable the plan to be met.
Rehabilitation and land management activity
included re-vegetation, weed control, pest
animal control and fre season fuel reduction.
Tallawarra's EPA licence regulates how we use
water from Lake Illawarra for cooling requirements
to mitigate impact on the Lake's biodiversity.
For example, we are not permitted to discharge
chemicals into the saltwater system, we must
reduce the heat of the water before discharging
back into the lake and undertake regular
monitoring of fsh and other species’ activities.
The power station's Environment Protection
Licence (EPL) requires us to conduct screen
sampling of fsh, prawn and jellyfsh species from
Lake Illawarra. As per the licence requirement,
the EPA undertook a review after three years of
monitoring and the results consistently showed
there was no signifcant impact on the plant and
animal life. The EPA agreed to remove the condition
requiring the monitoring of fsh, prawns and jellyfsh
in 2012. Investigations, monitoring and trials will
continue on options to reduce the impacts to
biota associated with the power station's thermo
shock process for the cooling water system.
The Tallawarra EPL also requires ongoing monitoring
of seagrasses in Lake Illawarra. A new methodology
for seagrass monitoring, Low Level Aerial
Photography (LLAP), was proposed by the EPA to be
undertaken as a trial alongside the existing monitoring
methodology. The Tallawarra EPL was revised to
require the two monitoring methodologies to be
implemented in the summer of 2013. However, the
LLAP methodology details were not fnalised by this
time. Routine seagrass monitoring of the lake was
conducted as per the normal licence requirements in
2012. The Tallawarra EPL was subsequently revised
to allow LLAP and the existing seagrass monitoring to
be undertaken in conjunction in the summer of 2014.
During 2010-11, extensive plantation of native
seedlings occurred to revegetate the area
surrounding the Iona gas facility. To establish these
seedlings, in 2012 we conducted an extensive
program of pest and weed management, mulching
around the seedlings and removed non-native trees.
Water in site wetlands is monitored on a regular basis
to check its quality is within acceptable ranges.
We conduct regular maintenance of site roads
and banks to minimise erosion. As part of this
program, during 2012 we undertook signifcant
work in our cold vent area to reduce run-off
causing erosion. Environmental inspections are
also conducted monthly to identify any general
environmental issues such as erosion.
More details of the rehabilitation
program is available in the Yallourn
Power Station and Mine Social and
Environmental Performance Summary
2012 Report, here
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