Donegal Council County is continuing to carry out an investigation into the illegal dump of toxic waste at a site in Bridgend.
It is understood that the hundreds of thousands of tonnes of the waste has been buried at the site in Bonemaine, Bridgend.
Concerns have previously been raised that a Northern Ireland Waste Disposal company could be using the site as an illegal dumping ground.
The Donegal County Council said: “These works involve detailed site investigation and sampling works that will inform a tier 2 assessment of the site in accordance with the Environmental Protection Agency’s Code of Practice on Environmental Risk Assessment for sites of this nature.
“It is anticipated that works on site will be concluded in the coming weeks.”
