Approximately 4,000 gallons of petrol (19,000 litres) leaked at the Chevron Fuel Storage plant in Wales, the UK, on 13 May.
The petrol spilled into a bund surrounding the container. Technical specialists are on site to find out which areas have been affected. Chevron said petrol is currently not leaving the terminal but garages are being supplied with fuel from other depots.
'Chevron can confirm that at around 9.45 am this morning, a leak was detected in a tank at the company's Cardiff terminal at Roath Dock,' a Chevron spokesman says. 'The terminal was evacuated safely and the emergency services are now attending the scene. All other firms based in the docks have been informed and the fire service is giving guidance on whether they need to evacuate their premises. The road around the terminal is open for people needing to access the docks area. Action has already been taken to prevent any further leak of fuel.'
Relevant agencies have been informed and The Environment Agency is involved. 'At present, we believe the fuel that has leaked has not polluted any water course and is contained on site,' a spokesman for the Environment Agency comments. Investigations will continue over the next few days to monitor if water courses will be affected.
A clean-up operation by Chevron will start as soon as the site is declared safe by South Wales Fire Service. An investigation into how the leak happened will be then be launched.