A coal mine in the NSW Hunter Valley has leaked the equivalent of more than a million tonnes of carbon dioxide since it was mothballed in 2014 without any penalty or restriction.
Mining giant Glencore’s own annual reports indicate its Ravensworth underground mine continues to emit methane, a potent greenhouse gas, from exposed coal seams. On a yearly basis, the pollution is equivalent to about 33,000 cars on the road, according to the Australian Conservation Foundation, which has released a report on so-called fugitive emissions from fossil fuel projects.
“We want monitoring and regulation to take into account the staggering scope of emissions from mines under care and maintenance,” Kim Garrett, an ACF environment investigator said. “It’s a regulatory limbo.”
The role of methane in driving climate change is detailed at length in this week’s release of the Intergovernmental Panel on Climate Change’s latest science update. Emissions of methane, which is about 84 times more potent than carbon dioxide on a 20-year timeframe, have been increasing since 2007 from fossil fuel projects and agriculture, the IPCC said.
Glencore declined to comment on the emissions from Ravensworth. The company had agreed to burn off methane from the mine when it got permission to extend its operations in 2010 but the flaring apparently ceased some time after its halted coal extraction in 2014.
Resources Minister John Barilaro’s office directed questions to the NSW Environment Protection Authority and the Planning Department.
The EPA said it did not monitor fugitive emissions from coal mines in the state.
A Planning Department spokeswoman said the department “enforces strict conditions on mining companies to ensure Scope 1 and Scope 2 emissions [related to the extraction and transport of fossil fuels] are minimised throughout the mine’s life cycle”.