Western Beach Residents Association president Peter Macorra said the premise to extract sand from Western Beach to replenish Wonnerup Beach had to be stopped entirely.
This week, the Department of Transport confirmed it would not extract sand from Western Beach in 2021 to allow time to work through community concerns.
Residents are concerned that extracting sand from Western Beach would jeopardise the entire groyne reconfiguration project as the beach needed to be saturated in sand for it to be successful.
Since Port Geographe was developed in 1997, seagrass wrack has unnaturally accumulated along the coastline at Western Beach.
The process was supposed to fix itself naturally after a number of years, but the problem persisted for 23 years.
Now, for the first time Geographe residents have a sandy beach after works were carried out to remove seagrass wrack from the area.
Western Beach Residents Association president Peter Macorra said extracting sand from Western Beach went against the whole premise that the beach must be fully saturated with sand for the groyne reconfiguration to continue workings successfully.
"The DoT knew they would cop community angst if they went ahead this year so all they have done is deferred the extraction until next year," he said.
"It is still unacceptable as far we are concerned."
Mr Macorra said currently, sand was being dredged from an offshore sandbar to replenish Wonnerup Beach which was proving to be successful.
""If you look at Wonnerup Beach it is an extremely good beach at the moment from that sand," he said.
"They can quite easily take sand from there for the next 60 years.
"We need Western Beach removed as a suitable source of sand for Wonnerup."
Department of Transport director coastal facilities Donna West said the final report they recently released with the City of Busselton followed an intense nine-month expert investigation of the performance of the reconfigured coastline.
"The report identified the use of clean sand from the nearshore area of the Western Beach to improve Wonnerup Beach as a key recommendation to improve the performance of the reconfigured structures at Port Geographe," she said.
"DoT, in consultation with the city, has agreed not to implement this recommendation in 2021 to allow time to work through community concerns.
"However, it remains a key recommendation of the Technical Working Group for the longer term.
"DoT spends more than $1.9 million each year maintaining the coastline at Port Geographe. The funding is currently being directed to the key recommendations of the working group report.
"Sourcing of sand from offshore sand bars was considered in the report but was not recommended due to several coastal processes and environmental factors."
Mr Macorra said if there were any environmental factors stopping the DoT from dredging sand offshore, then they should submit an application to to Environmental Protection Agency to get environmental approval.
Vasse MLA Libby Mettam said it was disappointing that the McGowan Labor Government have undermined the investment and collaboration we had seen under the previous Liberal National Government.
"The DoT must commit to working with the local community, including the Western Beach Residents Association Action Group, Port Geographe Landowners Association, Wonnerup residents and the City of Busselton to ensure the beach profile can continue to progress," she said.
"This includes replenishing the Wonnerup beach with sand from offshore if necessary as well as allowing the Western Beach profile to continue to progress."
