HS2 Ltd has begun a consultation on how it should assess the environmental impact of the controversial scheme.
The ‘scope and methodology’ consultation document defines the environmental topics that will be assessed.
It sets out the survey methods that are to be used, which geographical areas will be included and the period of time over which effects will be assessed.
During the eight-week consultation, HS2 Ltd is asking councils along the line of route and bodies such as Natural England for their views on what needs to be included in the assessment.
The quango says it will consider all responses received. But those which address specific local issues will be held on file and considered later as part of the public consultation on the environmental statement, due to be held in spring 2013.