Swords Wastewater Treatment Plant Phase 2 Expansion

Client: Siac / Aecom
Services: Temporary works design, supply and installation of ground support system

Since completion of the Phase 1 expansion works in 2003, growth in the Swords catchment has outstripped the treatment works’ current capacity, causing it to operate above its maximum design of 90,000 population equivalent. The Phase 2 expansion and upgrading the treatment plant aims to reduce the level of pollutants discharging to the receiving water (the inner Broadmeadow estuary) and to allow capacity for the growing population and projected commercial development of the greater Swords area.

Working for Siac / Aecom, Trench Control designed and installed ground support systems for large storm holding and retention tanks and a number of smaller ancillary tanks and structures. In addition, Trench Control provided other temporary works and geotechnical design services for the project. The ground support systems provided included sheet piles for 4m to 5m retained height in cantilever (unpropped) as well as sheet piles and trench sheets to with hydraulic propping elements for other structures.