Installation of the replacement pipeline will likely take place from March to July 2022.

Construction updates will be provided to the local community at least two months before the installation works commence. We will agree how we communicate this information with local authorities.

The map above provides information on installation within Turf Hill. As outlined in the planning process, the project will be using a narrow working area through the site. Further information on our construction plans can be found below.

About installation

Where required, vegetation and tree clearance will be undertaken by a small team during February 2022.

Before installation starts, the first thing you will see is signs notifying Turf Hill users that works will be taking place.

When installation starts, Heras-type fencing bolted together, or strong-wall fencing, will be used to secure the working area.

You may also see mobile welfare units, equipment, materials and vehicles within the working area.

During the open cut installation process, you may see deliveries of the steel pipes. These will be brought to site in a ‘just-in-time’ delivery sequencing – this is because we want to reduce the space needed for the compound within the site. We will also have 24-hour security of the working areas within Turf Hill.

Access to Turf Hill will be available throughout installation.

The rolling nature of construction is typically with a 50m long active working area, which together with the network of undesignated paths/tracks in the area, provide opportunities to reduce the disruption to users of Turf Hill.

Bridleway 129 West End

The use of the path will be maintained, with limited suspension or a local diversion, while the open cut installation crosses the bridleway.

Bridleway 66 West End

The use of the path will be suspended for the duration of open cut installation. There are opportunities to limit this suspension by diverting users to undesignated tracks. This will be agreed, in advance, with Surrey Heath Borough Council.

Where there are undesignated paths and accesses into Turf Hill, for example from private properties, if possible diversionary paths that are segregated from the working area will be provided.

The local landscape character of the Order Limits that pass-through Turf Hill comprises informal paths within coniferous woodland with some heathland and scrub understorey. There is also non-native invasive gaultheria along the northern extent of the area.

Following the completion of our tree survey, we anticipate that the following trees will require removal:

  • For the pipeline alignment along all three sides of the route at Turf Hill adjacent to The Folly, Heronscourt, Colville Gardens and Guildford Road 21 trees are to be removed.
  • For the construction compound 21 pine trees are to be removed. No mature trees require removal.
  • For the pipeline alignment from the compound into Guildford Road. This crosses the younger largely self-seeded belt of silver birch adjacent to the road,18 trees are to be removed.

Vegetation screening and trees will not be removed from the boundary between the woodland path and the private properties along the northern boundary of Turf Hill.

The trees that form the screen to the edge of Guildford Road will be retained except where the temporary vehicle access needs to be formed. Within the working area, trees will be cut down to ground level or lopped by licenced professionals. As with typical woodland management, where safe to do so, tree stumps are left in situ to reduce the ground disruption and left to decompose, providing habitat for invertebrates.

We will be using tried and tested techniques to work around tree roots through the park, including hand digging and use of air spades.

In addition, the project’s Environmental Clerk of Works and arboriculturalist will visit working areas to provide specialist advice when any works to trees, such as branch removal, are required.

The proposed pipe alignment has been designed to avoid the root protection areas of trees in private properties.

Before any open cut works can commence, works to trees identified to be removed will be undertaken by a licenced specialist.

The topsoil will be stripped and neatly stored to one side of the construction compound, which will provide additional noise and visual screening of the construction compound from users of Turf Hill. The area of the construction compound will then be covered with a permeable surface. Stumps will be removed from along the trench width to allow the installation of the pipeline. As with typical woodland management, other tree stumps will be left in situ to reduce the ground disruption and for ecological value (for invertebrates during decomposition).

The open cut is likely to begin at the crossing point of Guildford Road and work back to Red Road.

The open cut installation works area will be undertaken in section lengths of 50m and a maximum width of 15m. A 15m wide fencing/barrier system will be erected within the Order Limits, this is to segregate the ‘live’ working area from public accessible areas. As the works progress the fenced area will be relocated/extended so that no more than 50m of continues fencing is in place before a public crossing point. Topsoil will only be stripped from the area required for the trench.

For a distance of approximately 500m, the proposed pipeline will be installed adjacent to an existing water main. The project is aware of the presence of the Affinity Water main, has a signed Statement of Common Ground and will continue engagement with Affinity Water. The water main is located along the northern boundary of Turf Hill. The project has Protective Provisions with Affinity Water to control the construction of the pipeline in close proximity to the water main. It should be noted that the project will frequently need to work alongside utility pipelines in many areas of the pipeline’s installation.

Construction Compound

This area will be allowed to naturally regenerate as heathland. This has been endorsed by Natural England. This will involve replacing the topsoil, but not reseeding or replanting.

Bridle Paths

The bridle path will be reinstated once the open cut works are complete. Like-for-like footpath surfacing will be used for reinstatement, unless otherwise agreed between the Project and Surrey Heath Borough Council.

Vegetation

Where the topsoil has been stripped and stored, this will be replaced after the works have been completed. We will either reseed specific to Turf Hill native species and with respect to seasonality or it will be left to naturally regenerate.

Woodland will be reinstated with appropriate native species.

Where trees have been removed, they will be replaced at an adjacent location whilst outside of the 6.3m pipeline easement.

The vegetation will be subject to a five-year aftercare period.

Construction access for the majority of the works will be from Guildford Road access.

The work areas will be fully secure with locked gates and 24-hour security.