Construction crews discovered more radioactive slag in the soil while performing work on the new-look "Welcome Plaza" at Prospect Point in Niagara Falls State Park.
A spokesperson for the Office of Parks, Recreation and Historic Preservation confirmed the finding on Tuesday.
In a release issued by state parks, officials indicated that the compromised soils were "contained immediately in a fenced-off construction area inaccessible to the public." State parks officials said the materials do not pose an impact to public health and safety. Plans call for the soil to be removed from the site and shipped off to a licensed and approved waste facility. The materials, identified as slag and petroleum residue, is similar to substances found in earlier phases of the project.
This is not the first time radioactive slag has been found in the state park.
In August, about 1,500 tons of the material was removed from a construction site in the park. About three weeks after the initial finding, state parks officials confirmed that contractors building the park's Prospect Point Welcome Center discovered another "limited area" containing additional radioactive slag.