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The company was also issued with a warning letter.
The amount of coal transported by underground conveyor to the Cooranbong processing site exceeded the approved a limit of 4 million tonnes per annum by 6%, while the amount of coal transported from Cooranbong to the Eraring power station by overland conveyor exceeded the limit of 2Mtpa by 24%.
The tonnage limits were imposed primarily to restrict noise emissions at the Cooranbong processing site, the department said.
“The approval was modified in August 2012 to increase the tonnage limits that can be transported to the Eraring power station, subject to conditions requiring noise attenuation works at the Cooranbong site,” the department said.
