4.8.7 In addition, the Project is located within the Swansea Vale Development Area (UDP Policy EC1(3)) and this policy has also been considered for assessment of any significant cumulative effects. Swansea Vale is situated approximately 5 km from the Project Site and extends to some 190 ha south of a railway line and the M4. The assessment has also considered emerging LDP Proposals for settlements at the former tinplate works (also allocated for the Felindre Sustainable Urban Village) and Penllergaer, and the solar park at Lletty Morfil Farm (CCS Ref: MA0004).

4.8.8 The GIS building within the Substation will be extended at its eastern elevation (retaining the same height and width as the existing building) in order to facilitate the connection of the Project to the NETS. These works will be implemented by National Grid and are therefore not part of the DCO Application.

4.8.9 Approximately 300 m of 11 kV overhead line crosses the Generating Equipment Site from north west to south east at its western boundary. This section of line, owned by Western Power Distribution, will be diverted to avoid the Generating Equipment Site either above or below ground. This is not to be considered as part of the DCO Application, and will be assessment in the cumulative assessment.

4.8.10 Projects described in Table 4-6 have been considered in the cumulative assessment in each of the topic chapters where relevant.

4.8.11 Paragraph 87 of the DCLG guidance states 'It may not always be easy for applicants to assess potential impacts fully due to lack of available information. In such circumstances, applicants should take a pragmatic approach when determining what is reasonable and feasible. They should satisfy themselves that they have made all reasonable efforts to identify the main impacts and to include mitigation in the draft Order.' The assessment of cumulative effects in each of the topic chapters has utilised information in relation to each of the above applications where publicly available.

4.9.1 Effects are concluded to be significant or not significant. In some chapters, guidance is used which specifies its own variation to this assessment matrix. This will be explained and justified as appropriate. Further detail is provided in each technical chapter.

4.9.2 Judgements of significance are made based on a combination of perceived value and sensitivity of the receptor and the magnitude of change, and will also include, where necessary, an element of professional judgement by each of the technical specialists. The final evaluation of significance considers the residual effects, assuming all mitigation measures are applied. The terminology for expressing significance has been outlined in Section 4.6. Where appropriate, any topic-specific deviation to this by guidance and best practice is described in the technical chapters.