Committed to responsibility
Improving air quality
We are installing electrostatic precipitators,
developed by pollution control specialists Lodge
Cottrell, at the Ekibastuz GRES-1 power station.
Once installation is complete, these will capture
99.85% of ash in the air and reduce particulate
emissions by an estimated factor of four –
substantially improving local air quality. We plan
to fit the precipitators to all eight power units at
Ekibastuz GRES-1 by 2013, and are in the process of
testing the first unit, installed in 2009.
In 2009, we also introduced new coal burning
technology at Ekibastuz GRES-1, developed by
PolytechEnergo (Russia). Combined with the new
precipitators, this technology will further reduce
emissions. The new technology provides an
alternative to conventional dust-firing and will
allow the furnace to burn optimum-quality design
coal as well as lower-grade coal. This will increase
fuel efficiency, reducing emissions of nitrogen
oxides by over 30%. Another advantage is that the
new technology enables coal particles to coarsen,
and ash from burning coarsened coal has a greater
surface area and is more easily collected by the
precipitators. This increases the flue-gas
purification rate. Whilst it is a first in
Kazakhstan, the technology is tried and tested, as
PolytechEnergo has installed it in over 50 projects
in five countries.
Water use and emissions
Water supplies are coming under increasing pressure
in many parts of the world as populations grow and
industrialise. Mining uses large volumes of water,
posing the risk of competition with local
communities in regions where water is scarce.
In Kazakhstan, water availability varies
significantly by season and geography. In some areas
where we operate, water is scarce, especially during
dry seasons. This makes efficient water use critical
to the long-term viability of a number of
operations. In addition, all sites need to carefully
control the effluent they discharge into local
waterways, to avoid pollution and maintain local
water quality.
Total water use decreased by around 46% to 129,183
megalitres in 2009 (2008: 240,624 megalitres). There
are three reasons for this large reduction. Firstly,
the 2008 figure includes some water used by local
communities, as well as our operations. This will be
excluded in all future water data. Secondly, we
suspended zinc operations at Balkhash. Finally, in
Zhezkazgan, which suffers droughts in the dry
season, our copper operations have introduced a
water recycling system to reduce usage, as well as
discharges into the Kara Kengir river. Over five
million cubic metres of treated operational and
municipal wastewater are now provided to underground
mining operations at the South and Stepnoy mines.
Increasing economic pressures and inefficient water
use are endangering ecosystems in the Ili-Balkhash
basin. In October 2009, we signed a water use
agreement as part of an integrated water management
plan for the area being developed by the Regional
Environmental Centre for Central Asia. This commits
us to a series of measures to reduce water use and
effluent over time. Examples include improving the
pipeline feeding the local settlement, and the
installation of a water recycling system that will
reduce annual water withdrawal from Lake Balkhash by
87 million cubic metres.
Land management
We recognise the need to minimise land disturbance
and protect biodiversity throughout the life of our
operations. Local legislation requires us to
rehabilitate sites that have closed down. The Copper
Division sets aside provisions for this purpose as a
condition of its contracts and licences for subsoil
use, and this amounted to $37 million as of 31 December 2009 (2008: $48 million). The reduction is
due to the 25% devaluation of the tenge early in
2009.
Our operations carried out various land management
activities in 2009, such as using overburden, ash
and slag to backfill mines and restore landscapes,
and planting greenery on and around our sites. For
example, in 2009 the Copper Division hired a local
contractor to restore a 3,500m2 former stone quarry
at its Belousovsky mine, previously used to store
ash and slag. The first phase of the restoration
comprised levelling the area and laying subsoil and
topsoil. The second phase of reinstatement will
focus on promoting biodiversity, although the area
is fertile and we expect many plants to grow back
naturally.
Waste
Mining, metallurgical operations and power
generation create large amounts of waste, which can
cause environmental pollution if not properly
disposed of and is visually unappealing.
Our mining operations produce waste rock and
overburden, which we store in dumps and often use to
backfill mines and when rehabilitating sites after
closure. Copper smelting produces tailings and slag,
which is classed as hazardous waste and must be
securely contained in dams to prevent leaching into
the soil and water sources. Our power plants create
solid wastes such as fly ash and slag. Other wastes
created include sludge from our wastewater treatment
facilities, slime from our sulphuric acid plant and
general waste.
In 2009, our Copper and Power Divisions generated 70
MT of waste, down from 120 MT in 2008. We continue
to seek additional ways to beneficially reuse our
wastes, for example in brick production. The
Copper Division has also opened a
tyre-recycling plant in January 2010, see the case
study Fostering enterprise development.
Environmental awareness
Increasing awareness of the causes and effects of
environmental damage is essential for changing
behaviour and improving performance. In 2009, we
took part in a variety of events to this end.
These include:
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The Kazakhstan Environmental Protection
Ministry’s exhibition of natural resource
companies;
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Public hearings in Ust-Kamenogorsk, Eastern
Region, also attended by Kazakhstan’s
Environmental Protection minister;
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Meetings with the Environmental Protection
Ministry at Nura-Sarysu;
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A workshop on climate change and ratification of
the Kyoto Protocol held by the Climate Change
Coordination Centre, a Kazakhstan-based
non-governmental organisation;
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A workshop on environmental problems in the
Karaganda region;
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We also wrote and published various
environment-related articles and editorials in
the local and national media.
2010 commitment
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Develop a medium-term environmental action plan
based on the results of the audit carried out by
Golder Associates.