Question to the Department for Transport:

To ask the Secretary of State for Transport, what assessment he has made of the (a) time and (b) cost of clearing all contaminated material on the grounds where Heathrow plans to build a third runway.

The Airports Commission shortlisted three airport expansion schemes, two at Heathrow and one at Gatwick. The Airports Commission considered site enabling works as a part of their cost and commercial analysis and the Government is considering all of the evidence before reaching a view on its preferred scheme.

The Government accepted the Commission’s shortlist in December 2015 and outlined that it will take forward a draft Airports National Policy Statement (NPS) to deliver new airport capacity. The NPS will be supported by an Appraisal of Sustainability which will examine the economic, social and environmental impacts of the new runway proposals. This will include an assessment of the impacts on soil.