Researcher 'quite alarmed' by 'unrecognised' fracturing under Sydney drinking water catchment

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Researcher 'quite alarmed' by 'unrecognised' fracturing under Sydney drinking water catchment
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There are calls to halt operations at a mine south of Sydney after a hydrogeologist's study highlights the potential risk to water quality.

abc.net.au/news/concerns-of-unreported-fracturing-under-water-catchment/102136020A former WaterNSW hydrogeologist has found rock beneath Woronora Reservoir south of Sydney is cracking in "unrecognised" ways because of continued coal mining.

In work commissioned by the Nature Conservation Council , Peter Dupen reviewed the environmental performance of Metropolitan Mine at Helensburgh against its planning approval."What I'm now saying is the style of the impact is new," Mr Dupen said. Owned by Peabody, Metropolitan Mine extracts coal from the Bulli seam using underground longwall mining in and around the restricted Woronora special area, including under Woronora Reservoir.

The panel report found it did not have "any firm view on whether the security of water storage in Woronora Reservoir could be unacceptably impacted by basal shear planes", but it found "the likelihood of unacceptable leakage into the mine is very low". This meant the the water would not be filtered as effectively because it was taking a different course.

They said Mr Dupen's claims of environmental impacts had "been considered by government authorities and independent experts many times across many years".

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