89.The Government should not approve Heathrow expansion until Heathrow ltd. can demonstrate that it accepts and will comply with the Airports Commission conditions, including a night flight ban, that it is committed to covering the costs of surface transport improvements; that it is possible to reconcile Heathrow expansion with legal air pollution limits, and that an expanded Heathrow would be less noisy than a two runway Heathrow. In each case - climate change, air quality and noise - it needs to set out concrete proposals for mitigation alongside clear responsibilities and milestones against which performance can be measured. It should report regularly to Parliament, through this Committee and others, on progress. The Government should not avoid or defer these issues. To do so would increase the risks of the project: delay through legal challenge, unquantifiable costs resulting from unclear responsibilities, economic risks through constraint of other sectors to meet increased aviation emissions and long-term costs to public health from the impact of air pollution and noise.
Prepared 30 November 2015