With this approval, the company will be able to operate the mine until 2035 as well as commence work on a proposed east pit as early as 2016, which could improve the financial performance of the project, reported The Sydney Morning Herald.
The Bulga project produces six million tons of thermal coal each year from an open-cut operation.
However, the project has secured approvals to produce around 12.2 million tons of run-of-mine coal per year.
The PAC review concluded that the impacts of the project could be managed if stringent conditions and management plans were implemented.
Subject to the recommended conditions, the Commission has approved the application as recommended by the Department of Planning & Environment.
Glencore Australia coal head Ian Cribb said: "We understand that long-term employment at the mine – and the future of the business – is dependent on us earning and maintaining community support and our licence to operate.
"A Voluntary Planning Agreement has been developed in cooperation with Singleton Council and sees funds dedicated to local community improvement projects identified during consultation on the BOP proposal."
