At 2:32pm on Thursday, 11 July, we received reports of an incident on Bath Road in Thatcham.
Two Royal Berkshire Fire and Rescue Service crews from Newbury Fire Station were sent to the scene alongside an Officer and the Decontamination and Environmental Protection Unit from Whitley Wood Fire Station.
On arrival, crews discovered a large barrel leaking an unknown substance onto the road. Crews worked with Thames Valley Police to close the road and contain the unknown substance in an overdrum.
Crews were at the scene for approximately two hours and two minutes before handing over to Thames Valley Police.