Fingal County Council is to investigate whether waste was illegally dumped in another Roadstone-owned quarry - this time at Huntstown, in north Co Dublin.
Mr P.J. Howell, the council's director of environmental services, said yesterday the company only had a permit to take in spoil from the Dublin port tunnel project at the site, which is located off the N2, north of Finglas.
One source in the waste industry, who did not wish to be named, said the Huntstown site had been "used extensively over a long number of years" for the deposition of various categories of waste, including municipal waste.
Wicklow County Council is currently investigating a large Roadstone quarry near Blessington, where it has already found evidence of illegal dumping.
The company, a subsidiary of CRH plc, has said it had no knowledge of this activity.
Roadstone obtained a permit from Fingal County Council last September to use seven acres of its 500-acre site at Huntstown for the recovery of material from the port tunnel project. The permit excludes contaminated soil.
Mr Howell said the permit clearly specified recovery rather than disposal of the material. "The site was inspected after the permit was issued and nothing untoward was found. Everything seemed to be in order and above board."
However, he said the county council would be writing formally to Roadstone to inquire about the history of the site prior to the permit being issued and, in particular, whether it had previously been used for any dumping activity.
In its application for the permit, Roadstone did not indicate that any suspect material had been placed in any part of the Huntstown site. "We will be making contact with them straight away on this," Mr Howell said.
He also revealed that the company had applied for a second permit to recycle construction and demolition waste at the Huntstown site, with a view to making bricks from it. A decision on this application is due to be made shortly.
Mr Tony O'Loghlen, managing director of CRH Ireland, told the Oireachtas Committee on the Environment last week he was satisfied that no illegal dumping had taken place at either Huntstown or Fassaroe, another Roadstone site in north Co Wicklow.
