An investigation has been launched into the circumstances surrounding how a digger became stuck in the Camden Haven River on Wednesday, August 5.
A spokesperson from the Department of Planning, Industry and Environment - Crown Lands said staff are liaising with other agencies to investigate the circumstances of what has occurred and assess what action should be taken as a result.
Crown Lands will liaise with Transport for NSW, NSW Fisheries and Port Macquarie-Hastings Council.
Fire and Rescue NSW Laurieton members and a hazardous material response unit were called to the incident on Wednesday, August 5 at about 8.55am.
Station commander Les King said firefighters were called to set up booms around the machinery to absorb any potential spillage from hazardous material.
On Thursday, August 6 the digger was extracted from the water through the use of a bigger piece of machinery.
Fire and Rescue NSW Laurieton were called again to assist during the process.
An oyster farmer has raised concerns over the incident due to the potential detrimental impact to the environment.
The farmer alerted the relevant agencies, citing concerns the incident has allegedly left his livelihood at risk to contamination.