A WA Nationals MP has voiced strong concerns about a proposal for a rubbish dump in the Avon Valley.
The proposed landfill site for Perth's waste would be 14 kilometres south of Toodyay and see additional heavy trucks using Toodyay Road every day.
Paul Brown says thousands of signatures have been collected for a petition opposing the dump and calling for a review of landfill policy.
"That's what the petitioners are actually asking for, [they're] asking for the Legislative Council to have a look at the wider concerns, not just of this particular site, but of the wider concerns for the Hills area in relation to waste management," he said.
"I personally don't support the project because of an increase in the traffic along Toodyay Road in particular.
"Approximately 160 trucks per day will be experienced along that part of Toodyay Road and we're yet to determine what sort of trucks they will be as well.
Toodyay Shire opposes the plan but chief executive Stan Scott concedes if it gets through the approval process it probably cannot be stopped.
"Council is concerned that Toodyay could end up being the metropolitan area's dumping ground," he said.
"Basically what's happened is that there has been a pronouncement from the Minister for Environment that there'll be no more landfills on the Swan coastal plain, therefore people are looking further afield for locations where they can dispose of Perth's rubbish in landfill.
"I don't think odour is going to be a huge issue this far away.
"I wouldn't like to be living next door to it of course, but what's more of a concern is Toodyay Road because all of the trucks delivering garbage to the landfill will be traversing Toodyay Road and that's now one of the most dangerous roads in the state.
"There already have been five deaths on that road in the last 12 months."
The proposal is being considered by the Environmental Protection Authority.