Home / Planning Consultants Directory Please note that many of the planners listed will operate on an all-island basis, providing services in a range of areas across a number of counties or internationally. Go back to directory. Add to Address Book. Tetra Tech Tetra TechSligo 7 Beulah Building Finisklin Road Sligo F91 A0H9 Irelandhome Home Phone: 071 913 8909home Website: www.tetratech.com/europe Categories: Connacht, Uncategorized Updated 1 hour ago.