An ENDS investigation has located hundreds of buried landfills containing hazardous waste across England and Wales. Radyr Quarry is among them, identified in the Report as containing hazardous waste, details of which are lost. Concerns have been repeatedly raised by Councillor Sean Driscoll and many other objectors to the development. Yet those proposing to build houses on and adjacent to the site of the former quarry have ignored the concerns. Here’s a link to the report’s map of landfills containing hazardous waste:
https://www.endsreport.com/article/1704522/mapped-england-wales-toxic-legacy-landfills