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Preliminary findings of the detailed assessments on potential impacts associated with the W2CP construction and operation on environmental issues such as water catchments and supply, subsidence, flooding, groundwater, flora and fauna, noise, air quality, land use, visual impact, greenhouse gases, and traffic and transportation are available. |
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Major objectives for the project are to:
- Manage any changes to surface flooding impacts following subsidence;
- Manage subsidence impacts on surface structures such as houses; and,
- Reduce and manage subsidence impacts on landscape features, such as streams and aquifers.
Both Strata Control Technology Pty Limited and Mine Subsidence
Engineering Consultants Pty Limited are currently undertaking the
subsidence assessment for the project. The use of two leading consultants
for the subsidence assessment for this project reflects our desire to ensure
that this is satisfactorily addressed during the finalisation of the mine plan
design and subsequent environmental assessment.
The mine has incorporated a number of protection measures to safeguard
against adverse impacts on the local community. The amount of the coal
to be extracted beneath the Hue Hue area has been significantly reduced
to ensure that surface movement (referred to as subsidence), will be within
the levels stipulated by the declared Subsidence District for effective
management of impacts on structures.
Similarly, when crossing deep beneath the Dooralong Valley floodplain, which is necessary to access coal reserves within the surrounding State Forest,
the mine design has been selected to reduce the subsidence effects. Such
subsidence protection zones have been included in both the Yarramalong
and Dooralong Valleys as well as the Hue Hue rural residential area.
"...subsidence is unlikely to compromise in any significant way the water supply of the Central Coast"
"...damage to water supply infrastructure is extremely unlikely to arise from either direct subsidence effects or far-field horizontal movements"
"subsidence-induced hydraulic connectivity between Wyong River, Jilliby Jilliby Creek or their alluvial systems and any underlying mine workings is extremely unlikely"
“… the Panel is aware that mine subsidence is not known to cause significant damage to forests or to the potential to conduct forestry operations.”
Ref: "Strategic Review of Impacts of Potential Coal Mining in the Wyong LGA"
Report by Independent Expert Panel, released 17 December 2008. |
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