Nitrogen oxides and sulphur dioxide emitted from Keppel Merlimau Cogen Plant, Keppel Seghers Tuas WTE Plant and Senoko WTE Plant operated and maintained by Keppel Infrastructure remain far below the emission standards of cubic metre (mg/Nm3) and 500 mg/Nm3 respectively, as stipulated by Singapore’s National Environment Agency (NEA) Code of Practice on Pollution Control.