Question to the Department for Environment, Food and Rural Affairs:

To ask the Secretary of State for Environment, Food and Rural Affairs, if she will publish the (a) most recent environmental risk assessment for bound use of air pollution control residues in concrete blocks, (b) exposure levels of dioxins and heavy metals in the air when the blocks were cut, drilled or crushed in buildings and (c) scientific methodology used for measuring these levels.

In 2012 the Environment Agency’s Definition of Waste panel gave a positive end of waste opinion to the company Carbon8 for the use of air pollution control residues in concrete blocks. The company’s submission included their own risk assessment for safety and environmental impacts. We have not published, and do not intend to publish, information on the risks or the methodology relating to the binding of air pollution control residues in concrete blocks.