Spamount Wastewater Treatment Works (WwTW) was awarded to Shearwater Consortium of which Lagan Construction Group are a partner of in November 2011 under the IWWF Framework. The £1.2 million project was situated outside Castlederg in County Tyrone, Northern Ireland.
The main scope of works was to replace the existing works currently catering for a Population Equivalent (PE) of 900 with a new plant to cater for 1200 PE and the design allowance to expand the plant further to allow for 1500 PE if required in the future. It will also help Northern Ireland Water meet future NIEA discharge standards and EU regulations, for not only the final effluent discharge but also by screening storm flows.
The project involved the building of a complete new works around the existing plant; this consisted of new inlet works, 2 Primary Settlement Tank’s 2 Rotating Biological Contractors, 2 Final Settlement Tank’s, sludge tank, storm tank, associated pumping stations, 150m of 375mm of new outlet pipe and headwalls. Once this work was completed, the new plant was commissioned and in turn was in line with the required standards before the existing works was taken off line and demolished. This allowed the remainder of the site works to be finished out such as kerbing, concrete hardstands and roads.
Works also included upgrading the current site access by providing a new pre-cast box culvert stream crossing with associated wing walls and concrete access lane. This project was successfully managed on time and under budget by the Lagan Construction Group Ireland Regional team on site, working with tight site constraints and the alongside the local agricultural community.