Lord Berkeley – 2014 Parliamentary Question to the Department for Environment, Food and Rural Affairs

The below Parliamentary question was asked by Lord Berkeley on 2014-05-07.

To ask Her Majesty’s Government what time period of asset use they have assumed in calculating the cost benefit of the Thames Tideway Tunnel.

Lord De Mauley

The Government has used 100 years, in line with the Treasury Green Book recommendation that the appraisal period should be taken as the useful life of the assets. Further detail can be found in the November 2011 Defra document “Costs and Benefits of the Thames Tunnel”.