Mr Nalder told a business breakfast last week that being able to deliver a twin-bored tunnel railway line out to Forrestfield as part of the $2 billion airport link at a price in line with doing it above ground meant he �felt a lot more comfortable to explore this as a potential solution for getting us to the port�.
The other option is to continue the freight link down Stock Road and Leach Highway/High Street.
Mr Nalder said part two was yet to be finalised, but he did apologise to Palmyra residents for the uncertainty created while he explored alternative routes.
A Palmyra resident said her family was working around the clock to finish renovations so they could be compensated appropriately if the State Government resumed her home.
�We�ve just been spending money to try to get it finished potentially so they can knock it over,� she said.
Fremantle MLA Simone McGurk argued the uncertainty was widespread and the project should be scrapped.
A City of Melville report by technical services director John Christie in July found 72 commercial and residential properties would be affected if the Stock Road/Leach Highway option went ahead, �from full acquisition to minor land take to changes in access�.
Of the 46 residential properties, 20 are in Palmyra, 21 in Willagee and five are in Hamilton Hill and Fremantle.
�The City is firmly of the view that Option 2 with a tunnel under the Fremantle Eastern Bypass alignment is the best outcome for the community, the long-term operation of the Perth Freight Link and Fremantle Port,� Mr Christie said.
Cockburn Mayor Logan Howlett said he welcomed news the Senate would investigate the financing and decision-making behind the freight link in September or October.
Mr Howlett was hopeful information that parties opposed to the $1.6 billion project have been looking to scrutinise for months would be made public.
�Transparency is of the highest priority, particularly when you�re spending billions of dollars of taxpayers� money on a project which the community are generally saying they don�t want and there�s better options available,� he said.