Carnell were engaged to undertake a pipework and chamber defect survey by CCTV, to provide up to date information on the asset condition on the M53 / M56. This was analysed alongside catchment areas to assess priority assets.
Additional filter drain information was gathered through trial holes allowing a programme to be developed for the main works including the TM requirements. Once costed and taken through the 3D value management process the scope was agreed.
Carnell carried out the remediation of piped and surface drainage assets within three weeks of the initial survey. A post-construction survey report was provided to update condition data.
The remediation included jetting, no-dig pipe repairs, filter drain recycling, overburden removal and ditch re-profiling.