THE next step of the Toondah Harbour environmental assessment will begin this week with a drill rig to be set up at the foreshore for groundwater monitoring.
The installation process to dig groundwater boreholes will start on Friday at five foreshore locations from GJ Walter Park to the main harbour area.
It comes as part of the environmental assessment project for Walker Corp's planned $1.4 billion residential and marina development.
"Residents will notice a drill rig that will create the individual boreholes over a period of about a week," Toondah Harbour communications manager Dolan Hayes said.
"The bores will be around 10 to 30 metres deep and dug across different locations so scientists can look at the type and composition of water at these sites and at varying depths, but also see how water flows across the site and into Moreton Bay.
"The work will be done in compliance with all safe work practices and there will be no public impact.
"Each of the boreholes will be 150 millimetres in diameter with about a half a metre wide concrete plug at the surface. They will be flush to the ground with a lockable case at the top so compliance monitoring can continue over the life of the project."
Mr Hayes said groundwater analysis would add to the work being done on areas such as air quality, climate change and noise impacts, and marine ecology and fauna studies.
"Ground water systems change over time with the seasons and with climate impacts such as drought, so establishing these bores will allow us to monitor groundwater over time and develop appropriate management strategies if any impacts are identified," he said.
Mr Hayes said GJ Walter Park was not part of the Toondah Harbour proposal but sits adjacent to areas that are included in the development masterplan.
He said the draft Environmental Impact Statement was scheduled for public review before the end of 2020.