The Stroud Water Resilience Project works would involve connecting two reservoirs together and installing a replacement main to the existing system. This would mean installing over 16km of pipe work with required washout structures and valve releases.

The entire system would be subject to testing up to 25bar of pressure and then chlorination prior to commissioning.

The works would involve four main pipe laying teams and three enabling gangs to work alongside fencing/stripping and reinstatement teams.

At its peak the job would run with around sixty staff.

Two major crossings under the M5 and rail network have been installed, each with 10m shafts and over 100m of TBM tunnelling with the pipe work installation through.

Stroud Water Resilience Project – The Scope 

• Full environmental mitigation would be a requirement prior to access into private land; involving Badger Licenses and translocation works, Nesting Bird protection, Vole licenses, Environmental licenses for crossing water courses around fish spawning seasons, ancient monument consent, natural England consents, Giant Hogweed mitigation, Organic farming construction methods, stock proof fencing, great crested newt mitigation, National Trust licenses.  
   
• Following completion of the environmental mitigation in each section, each landowner would have a bespoke access agreement. This would ensure minimal disruption to the customers. A fenced 20m easement along the new pipeline route would be stripped to allow the construction of the new pipeline.  
   
• New pipeline install to Severn Trent specifications; the 600mm main was ductile iron installation using an open cut method. Additionally we would install a 450mm main in PN16 Plastic using butt fusion welding. Following the main installation, we would complete thrust and anchor blocks installation to allow pressure testing in 1km sections.   

• There were four major crossing points on the project; two of them would be completed using 10m shafts and a TBM installation underneath the M5 and the national rail network. The other two major crossings of the Lichfield Canal and A46 have been completed using an open cut method. 

• The final element of the project would require installation of the new pump station structure and connection into the existing service reservoirs and pump stations. Once connected, full chlorination of the new mains pipe works would be completed prior to the mains going into commission.