The proposal is to construct and operate a 23-kilometre pipeline from Kwinana Junction, in Kwinana to Hopelands (between Punrak Road and Henderson Road). This proposal is known as the Southern Looping Project, and comprises loop 10.

The proponent has also referred a proposal to construct and operate a 194-kilometre pipeline from Compressor Station 1 south of Karratha, to Compressor Station 9, north of Gingin. This proposal, known as the Northern Looping Project, and comprising loops 1 to 9, has also been assessed by the EPA. Together, the Northern and Southern Looping Projects have been designed to increase the supply of natural gas into the south-west of Western Australia, where the demand for gas by the household and commercial sectors is increasing.