DART+ is a transformative programme of projects that aims to modernise and improve existing rail services in the Greater Dublin Area (GDA). The DART network will increase from 50 kilometres to 150 kilometres transforming commuter train travel in the Greater Dublin Area. It will provide a sustainable, electrified, reliable and more frequent rail service improving capacity in all rail corridors serving Dublin, bringing DART travel with all its benefits to new and existing communities. The provision of a new electrified fleet will improve capacity and reduce greenhouse gas emissions.The DART+ Programme is being developed and promoted by Iarnród Éireann (IÉ) and National Transport Authority (NTA) to meet the aims of the National Development Plan (NDP), the Transport Strategy for the Greater Dublin Area 2022-2042 and the All-Island Strategic Rail Review. In advance of the works commencing on the DART+ West project, Iarnród Éireann are inviting tenders to undertake a series of Topographical, Slit Trench , and EML / GPR / CCTV surveys. The survey requirements are outlined in Sections 4, 5 and 6, and the survey extents are outlined on the drawings provided in Appendix A.