This project was one of our challenging projects. in this project we had 3000 L.Mtr Quay Wall underground with high water level, in first stage Dewatering Subcontractor did his job and then our work started with excavation on above the Quay Walls after that the main work it was to break the Quay Walls and take them out of chanal and then removing all debris up to bottom of Quay Walls, and in the end started do backfilling layer by layer in 30 Cm.