• Additional mitigation: This is often referred to as ‘additional mitigation’ and includes actions that will require further activity in order to achieve the anticipated outcome. These may be imposed as part of the planning consent or through inclusion in the PEIR topic chapters (e.g. describing certain lighting limits, which will be subject to the submission of a detailed lighting layout as a condition of approval; commitment to the implementation of an archaeological watching brief).

developing a transport strategy that reduces trips, avoiding the need for junction improvements).

4.6.17 These measures are described in the Chapter 3: Project and Site Description, and a summary is provided in the topic chapters, where relevant to the topic.

4.7 Assumptions and Limitations

4.7.1 The following assumptions have been made in each of the topic chapters when assessing the Project.

  • a) Construction/ Decommissioning
  • The total construction programme will be approximately 22 months, with a start date of early 2020.
  • The Generating Equipment will be decommissioned and removed at the end of its operational life;
  • The decommissioning phase will be around 22 months;
  • The underground elements of the Gas and Electrical Connections will be capped and left in situ at the end of their operational life to avoid any adverse environmental effects associated with their removal;
  • The design, construction and decommissioning phases of the Project will satisfy minimum environmental standards, consistent with contemporary legislation, practice and knowledge.

b) Operation

  • To ensure decommissioning is assessed in principle, the operational life of the Power Generation Plant has been assumed to be 25 years;
  • The Generating Equipment will operate intermittently for up to 2,250 hours per annum (1,500 running hours rolling average over 5 years). This could be at any time during the year, at any time of day and for any length of time up to but not exceeding 2,250 hours;
  • The Generating Equipment will have a rated electrical output of up to 299 MW;
  • Existing (2017) surrounding land uses will not change, with the exception of the developments to be cumulatively assessed with the Project, which have been identified below;
  • Assessments are based on published sources of information and primary data collection;

Prepared for: Abergelli Power Limited

AECOM 4-14