Question to the Department for Transport:
To ask the Secretary of State for Transport, what assessment he has made of the effect of expansion at Heathrow Airport on (a) particulate emissions and (b) nitrogen oxide levels.
The Appraisal of Sustainability (AoS) that accompanies the proposed Airports National Policy Statement (NPS) provides a strategic level assessment of the potential social, economic, and environmental impacts of expansion, including on air quality. The AoS has been published on the DfT’s website and the relevant information can be found at: https://www.gov.uk/government/publications/appraisal-of-sustainability-for-the-proposed-airports-national-policy-statement
Should the proposed Airports NPS be designated, then it would be for the promoter to undertake a detailed assessment of the air quality effects of the scheme, and put forward an appropriate package of mitigation measures.