Northern Ireland Fire and Rescue Service have been dealing with an incident at commercial premises at Craigmore Road, Coleraine.
At 2:15am on Friday morning, there were 67 firefighters in attendance along with eight pumping appliances, two aerial appliances, two water tankers and a command support unit.
Operations are ongoing in the area.
RiverRidge CEO Brett Ross said in a statement said it is “too early to assess the cause and the extent of the damage” at the company’s Craigmore facility.
“The fire will be the subject of an immediate and thorough investigation and both the Health and Safety Executive and Northern Ireland Environment Agency have been notified.
“Contingency plans for the company have been enacted and we have alerted key customers to assure them of our ongoing services. The collection of waste is ongoing, although there will be some disruption/delays to the likes of our skip services.
“I would like to thank the Northern Ireland Fire and Rescue Service for their immediate response and support and apologise for any inconvenience caused to our neighbours.
“No one has been injured during the incident.”