This project on Barra in the Western Isles was to construct a new wash water recovery system at the existing water treatment works. This involved the construction of new sludge thickening tanks and the installation and commissioning of new sludge pumps, supernatant return pumps and poly & sodium hypochlorite make-up and dosing skids, within the existing building, together with a new chlorine contact tank.
Existing storage bins were demolished to provide space for new discharge sand filters and the filtrate return pumping station, involving excavation of the existing rock face for the building footprint The area utilised for the new building was being used as a storage compound and a new storage area was therefore provided to the south east of the site.
A new pumped main between the WTW site and the raw water tank was constructed to return wash water supernatant to the head of the works.
The work also included a new MCC along with control panels for the new and existing equipment.
An underground chemical waste tank, new connecting pipework, decommissioning the old pipework and the installation of land drainage completed the works in this remote island location.
Within the existing WTW building modifications were made, which included the removal of the existing flocculator, thickening tank, supernatant return pumps and tank, thickened sludge pumps and poly/sodium hypochlorite dosing equipment.
The overall project involves the off-site fabrication and installation of a new linkspan structure at Oban Ferry Terminal for client Caledonian Maritime Assets Ltd (CMal).
12th February 2019
GL making a return visit to the Sound of Kerrera off Oban, to undertake substantial repairs to the breakwater which suffered collision damage following an altercation with a workboat earlier this year.
14th December 2018
Michael Matheson MSP and Cabinet Secretary for Transport, Infrastructure and Connectivity covered all his portfolios at the official opening of the new Polmadie Footbridge giving pedestrian and cycle transport access,
18th September 2018