We are currently installing the replacement pipeline in Turf Hill. The open cut section within Turf Hill installation will be joined to the section of pipeline installed under the Lightwater Bypass A322 (TC021). This trenchless crossing is likely to take place in May and June 2022.

Installation at Turf Hill will likely conclude by the end of July 2022. Re-seeding will likely take place in August 2022. Re-planting will likely take place in November 2022.

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

Please also see our Turf Hill brochure here.

About installation

Where required, vegetation and tree clearance was undertaken by a small team during February 2022. Before installation started, the first thing you will see is signs notifying Turf Hill users that works will be taking place were installed.

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

During the open cut installation process, you will also see deliveries of the steel pipes. These are 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.

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.

In February 2022, we completed the vegetation removal in this area as per the details listed in the Site Specific Plan.

Vegetation screening and trees have 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 have been 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.

Open cut installation has started from the Red Road end of Turf Hill and will work along the main track towards Guildford Road. We are working in 50m sections. When it is safe to do so, we will re-open the main track as we progress the works.

Our construction working hours are between 08:00 and 18:00 on weekdays (except Public and Bank Holidays) and on Saturdays – except in the event of an emergency. You may see our team setting up and closing down an hour either side of our working hours too.

All fabrication works (such as grinding, welding, coating and testing) will be undertaken behind screens or within shelters in order to reduce any impact on the users of the area. These areas will include acoustic protection if required.

The Turf Hill car park will remain closed for the duration of our works.

The open cut section within Turf Hill installation will be joined to the section of pipeline installed under the Lightwater Bypass A322 (TC021). This trenchless crossing is likely to take place in May and June 2022.

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.


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. We expect up to 10 deliveries a week, and not all of those will be large lorries. The steel pipe lengths will be brought to site in ‘just-in-time’ delivery sequencing and where practical, large deliveries will be outside of traditional peak traffic hours.

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