Councillors to inspect progress on Letterkenny Wastewater schemes

With the contract work on the Letterkenny Wastewater Treatment Plant and Sludge Treatment Centre progressing on schedule, members of the Town Council will get the opportunity to observe at first hand the facilities later this month.

With the contract work on the Letterkenny Wastewater Treatment Plant and Sludge Treatment Centre progressing on schedule, members of the Town Council will get the opportunity to observe at first hand the facilities later this month.

Councillors will meet on Thursday 22nd for a power point presentation at the Public Service Centres before being taken on a tour by bus of the ongoing construction works at the various sites.

In a progress report to Monday night’s meeting of the Council, Town Engineer, John McCarron said the contract was progressing well and was “generally on programme or a little ahead”.

Detailing the respective sites, he referred to the Wastewater Treatment Plant at Magheranan where construction commenced in early May last. “The structural concrete works and pumping stations are all complete and the buildings are nearing completion at this stage. Installation of mechanical equipment and interconnecting pipework is 80% complete. Electrical installation has yet to commence.”

Works have commenced levelling out for site-works including roads and paths with construction works on schedule to allow for commissioning and testing in the third quarter of 2012.

“The Contractor continues to operate the existing treatment plant within the limitations of treatment capacity. Monitoring results indicate that treatment wastewater effluent from the plant is largely compliant. Substantial volumes continue to by-pass treatment (35% generally) impacting negatively on the quality of the combined discharge,” the Engineer revealed.

He told councillors that the final effluent outfall pipeline had been laid along the Thorn Road which had subsequently been resurfaced. Detailed proposals for the design and contruction of the outfall in the river at the Thorn had been prepared and discussed with interested parties while approval has been sought from the Foreshore section of the Department.

The storm water overflow manhole along with the storm water holding tank and outfall pipelines were all “substantially complete” at the Ballyraine Storm site with mechancial plant installation 60% complete. Construction of site roads and services were 80% complete, Mr. McCarron told members.

Highlighting progress at the Sludge Treatment site at Bonagee, he said the piling of the site was complete while the reinforced concrete slab was 80% constructed. “Building works on the sludge building are 70% complete and structural steel erection commenced at the start of March.”

Completion of civil engineering and building works is scheduled to allow installation of process equipment proceed in the second quarter of 2012.

Added the Engineer: “Seven pipelines/ducts have been drilled in place across the Swilly River below the river bed. These will allow for the transfer of sludges, sewage, process water, washwater, eletrical power and electronic signals between the sites at Magheranan and Bonagee.”

Work on the trunk sewers was, he disclosed, substantially complete.