The proposal is to develop the Tubridgi Gas Field to supply natural gas to the existing Dampier to Perth pipeline. This would require the establishment of processing facilities on site near Onslow and an 85 kilometre connecting pipe to join into the main line.
The gas field is about 36 square kilometres in area and lies under Urala Station pastoral lease, about 25 km south-west of the town of Onslow. It is estimated that up to 30 terajoules of gas per day could be collected over a field life of approximately ten years.
Gas would flow in buried lines to a central treatment plant where it would be cleaned and compressed. It would then flow down a buried 150 mm to 200 mm diameter pipe to compressor station CS2 on the existing gas pipeline to Perth.
The route has been chosen to avoid archaeological sites and the easement width would be kept to the minimum to reduce environmental impacts. After construction the pipeline route would be rehabilitated and regularly inspected.