Enniscorthy Sewerage Scheme, Wexford

We completed work on this project for all stages (i) to (v) from Preliminary Report/optioneering through detailed design, tendering, construction supervision, commissioning and handover. This scheme involves the construction of a verified hydraulic drainage model of the wastewater and stormwater sewers in the agglomeration, a new 26,200 PE wastewater treatment plant including sludge treatment and storm storage, the upgrade of seven pumping stations, the construction of a new package pump station, construction of new foul sewers, upgrading of existing foul sewers and rehabilitation of existing foul sewers.

The scheme was split into five contracts as follows:

• Contract No. 1 – Site Investigation Works
• Contract No. 2 – CCTV and Manhole Survey
• Contract No. 3 – Flow and Load Survey
• Contract No. 4 – new 26,200PE WwTP & sludge treatment facilities
• Contract No. 5 – foul and storm sewer network

Key features of this project:

Contract No. 4

• 26,200PE WwTP & sludge treatment
• Provision of 2,300m³ storm storage
• Upgrade of pumping and control equipment at three satellite pump stations
• DN375 x 820m gravity sewer
• This project includes a 7-year operating contract

Contract No. 5

• Upgrading, rehabilitation and extension of the foul and storm sewer network including various pumping stations and decommissioning of CSO’s
• The data collection/hydraulic model build, and verification stage is in progress