Balbriggan and Skerries Wastewater Treatment Scheme, Dublin

We were appointed by Fingal County Council to prepare the original preliminary report and execute detailed design, procurement, and construction supervision for Balbriggan and Skerries WWTS. We also completed a detailed site selection process and EIS for the treatment plant.

The scheme was subsequently split into the following contracts:

• Contract 1 Phase 1 (30,000 PE WWTP) and Phase 2 (70,000 PE WWTP)
• Contract 2 – Dublin Road Pump Station & Rising Main - Public Works Contract PW-CF4 v.1.7
• Contract 2 – Rush Road Pump Station and Gravity Main - Major Civils Irish Water Form of Contract
• Contract 2 – Loughshinny Pump Station and Rising Main - Major Civils Irish Water Form of Contract

The key features of this project are as follows:

Contract 1 WWTP:

• 30,000 PE and then 70,000 PE WWTP (including UV/tertiary treatment)
• Sludge thickening and dewatering facilities
• DN900 x 2km long sea outfall

Contract 2 – Pump Stations and Network Contracts:

• Dublin Road Pump Station & Rising Main - Isaacs Bower PS (250 l/s), Dublin Road PS (532l/s), approx. 6.5 km of rising mains, 1km of gravity main and 1,100m3 x 6.5m deep precast concrete storm water handling facility
• Rush Road Pump Station and Gravity Main – Rush Road PS (186 l/s), DN1200 x 470 long sewer (trenchless technology), 700 m³ x 6m deep precast concrete storm water handling facility (Caisson Construction)
• Loughshinny Pump Station and Rising Main –, Loughshinny PS (12.5 l/s), Storm Tank and 2.5km Rising Main