Efforts are underway to determine just how much liquid gas oil leaked into Cork Harbour during a spill earlier this week.
The clean-up operation following the spill from the Irving Oil Refinery at Whitegate in east Cork continues.
On Monday evening, Irving Oil notified the Enviromental Protection Agency (EPA) of a spill.
The company said that an inspection earlier in the day had found that an amount of gas oil had leaked from a small gauge pipe onto a marshy area below and then into Cork Harbour.
The leak was contained and damaged equipment repaired.
So far, vacuum tankers have been deployed on the western side of Whitegate Bay to recover spilled gas oil close to the site of the leak.
Oil absorbent booms have also been deployed at the site to stop any further release of gas oil from the marsh area into the bay with the spent booms being removed and replaced.
The spill response team have also begun clean-up operations on the southern and eastern shoreline of the bay including low pressure washing of the sea wall in Whitegate village with crews being deployed to removed accumulated gas oil residues on public pathways in the village.
Monitoring of water quality in the nearby areas of Cork Harbour is also being undertaken on a daily basis.
The EPA, who have had a team of inspectors on site since early Tuesday, said they will continue to oversee the progress of the clean-up until it is complete and "the incident is closed".
Irving Oil said they say are "working to determine the quantity of gas oil released during the incident".
In a statement issued this evening, Cork County Council said they are satisfied all necessary response actions are being taken and will continue to monitor the situation.
