The purpose of Phase 2 (Option Selection) is to examine a range of reasonable options and alternatives and determine a preferred option for the scheme.

During this phase, a suitable study area is initially identified in which the options and alternatives identified in Phase 1 are further developed and assessed. A detailed Constraints Study is undertaken in order to identify the nature and extent, at an appropriate level of detail, of constraints within the defined study area. Following this, a systematic and rigorous assessment of options against the scheme objectives is carried out considering a broad range of environmental, engineering and economic criteria.

The phase will culminate in the publication of an Option Selection Report which will recommend the preferred option for the scheme.