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Public Information Booklet
The environmental issue is:
� Significant additional soil disposal would be required, as the current design requires
piling foundations, or removal, treatment and replacement of the soil (i.e. the soil is
re-used, not dumped separately).
Sinking of the LNG tanks to the roof would incur significant additional cost. Initial
enquiries to CB&I (an LNG tank building company) have indicated an additional cost of
about $500 million. This is due to the fact that this would place the LNG tank down into
the harder sandstone material (harder to excavate) and below the water table.
Partially sinking the LNG tank, for example, to the depth of the pindan sand, can be
considered. As the soil could be backfilled, safety issues can be reduced. However, as
the depth of the pindan soil is unclear until the site is agreed and surveys completed, the
depth to which the tanks can be sunk is also unclear. Expectations are that the
sandstone would be 10 to 15 metres (33 to 49 feet) below the pindan surface, but some
improvement would be lost due to the tank foundations which were already below ground
level. However as the total tank height is in the order of 45 metres (approximately 148
feet), sinking the tanks by 10 to 15 metres (33 to 49 feet) would not provide much benefit.
Question - Can you change the colour of the LNG plant equipment to green for
example, instead of silver?
As part of the Strategic Assessment, a visual impact assessment will be undertaken to
increase the understanding of the visual impact of the facility/what it will look like on
country from the land and the sea. The level of visual impact of a facility will depend on
several things. Basically this involves understanding what country is like now such as the
character of the selected site; the colour and type of terrain or hills in the area; the size
and colour of existing plants in the area; the scale of the natural environment; the size
and colour of the facility; the location of the facility; etc.
Woodside as a potential foundation proponent will undertake a visual impact assessment
to determine the level of visual impact of its proposed facility and to identify what could be
changed so it doesnít look as obvious. Traditional Owners will be consulted in this study.
Painting the plant a different colour (rather than the normal silver of the plant) will be part
of the alternatives considered as it is technically feasible to paint significant portions of
the plant to help blend it in to country although it will have maintenance and cost
implications.
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