Project Details: The construction of a sewerage scheme to cater for an equivalent population of 5000 persons and provisions made to allow for expansion in stages, for an equivalent population of 15000 persons. The process yields a final effulent with the following characteristics: BOD - 10mg/l, Suspended solids - 15mg/l, Phosphorus - 2mg/l

Scope of Work Carried out by Coffey Construction Ltd.:

· Construction of Wastewater Treatment Works at Ballygasty and Graigue Town lands, Loughrea and construction of new final effluent outfall line from the Treatment Works to adjacent stream.

The Phase One Stage One Scheme consisted of the abandonment and demolition of the existing Sewage Treatment Works and the construction of a New Works. The Treatment Works has been designed to treat wastewater from a future equivalent population of 15,000 persons. The Phase One Stage One Scheme consists of Treatment Units to accommodate an equivalent population of 5,000 persons. The new works includes:

Process Units / Chambers	Buildings
Inlet manhole to Preliminary Units	Control Buildings & Lab
Preliminary Units	Sludge Dewatering Building
Stormwater Holding Tank	Sludge Storage Area
Stormwater Return Pumping Station
Flow Splitting Chambers
Flow Splitting Valve Chambers
Aeration Tank
Final Settlement Tanks
Supernatent Pump Sump
Activated Sludge Pumping Station
Sludge Thickening Tank
Final Effluent Inspection and Pumping Station
Final Effluent Sampling and Meter Chamber
Flow metering chambers
Interconnecting pipes

Outfall Pipeline to Receiving Watercourse.

Demolition of Existing Treatment Works and Rehabilitation of Site, Landscaping, Cable Ducts and Watermain, Cattle Grid, Entrance Gates and Boundary Fencing.