Bran Sands Long Sea Outfall

Project Scope:

• The objective of this project is to reduce nitrogen loadings in the Teesmouth and Cleveland Coast Special Protection Area (SPA) by 1st April 2030. This will be achieved by removing the Bran Sands discharge from the River Tees and discharging directly to the North Sea to improve dispersion and dilution.
• A Long Sea Outfall for Bran Sands has been supported and approved by Ofwat in the final determination of NWG's PR24 (business plan).
• The Levelling Up and Regeneration Act (2023) requires Technically Achievable Limit of Total Nitrogen of 10mg/l at 'designated STWs' that serve a population equivalent of more than 2,000 people by 1 April 2030 and are within the Nutrient Neutrality area.
• To deliver this, the driver was included in the Water Industry National Environment Programme (WINEP) under the Habitats Directive for Nutrient Neutrality.

Project Brief - Option Detail:

• The project indicatively consists of three works packages outlined below:
• Onshore Headworks/Pumping Station
• Onshore pipeline - 3km 2m diameter
• Offshore pipeline - 4.5km 2m diameter

The packages may be tendered and awarded individually or in combination.

Types of work under the packages may include (but are not limited to):

• Design of pumped marine outfall pipeline systems
• Early Contractor Involvement and/or Works Contractor(s)
• Onshore environmental, geotechnical and geophysical surveys
• Offshore environmental, geotechnical and geophysical surveys
• Onshore tunnelling (tbc)
• Offshore tunnelling (tbc)
• Flow collection chamber/Pumping station and/or Headworks pumping station - civil, mechanical, electrical and ICA
• Dredged outfall installation - long length large diameter PE with concrete ballast
• Marine structures - outfall diffuser and diffuser protection