Mr Robertson said that the Natural Resources and Other Legislation Amendment Act 2010 would mean that BTEX compounds will never be used in CSG operations in the state.
BTEX compounds, which contain benzene, toluene, ethylbenzene and xylene, are used in overseas fraccing operations.
The Government had previously said that it would use the Environmental Protection Act 1994 to require the Department of Environment and Resource Management to refuse any application for new CSG activities that involve the use of BTEX chemicals to fracture the coal seam.