Installation of the replacement pipeline will likely take place from March to November 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 Rushmoor Borough Council.

The map above provides information on installation within the park. As outlined in the planning process, the project will be using a narrow working area through the park and working within the Order Limits (red lines) where we have consent. Further information on our construction plans can be found below.

Key Messages

  • We will be using an E-power trenchless technique when entering the park near Cabrol Road. E-power allows us to remove stringing activity from the park and means we avoid removal of the Stakes Lane garages.
  • We will be using an HDD trenchless technique when exiting the park under the A325. The excavation within the area for HDD is shallower meaning we can use smaller, less intrusive equipment for the installation.
  • We have committed to narrow working for the open-cut works, reducing the working area to a 10m width.
  • Following on from our recent surveys, we have adjusted the pipe alignment to avoid the thrust blocks (concrete) securing the sewage pipes underground. The adjustment to the pipe alignment is only by 1-2m in select locations and remains within the 10m working width.
  • Due to the small change in alignment, we will need to remove one additional non-mature tree for the open-cut works. We are committed to protecting as many trees within the park as we can and will not be removing any veteran or mature trees.
  • We have recently updated the Site-Specific Plan for the park, which can be found here.
  • We will need to remove the current play area so that we have space to install our construction compound. Before removing the current play area, an alternative play area will be installed elsewhere in the park. Once we have completed our installation works in the park, we will replace the original play area with new equipment. We have also offered to leave the alternative play area in place, even after the original playpark is reinstated.
  • We can confirm that we will not be working over the Jubilee weekend as requested.
  • We have provided a non-technical summary of open-cut techniques through root protection areas in Queen Elizabeth Park available here.

About installation

Where required, vegetation and tree clearance will be undertaken by a small team during December 2021.

Before installation starts, the first thing you will see is signs notifying park 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 park. We will also have 24-hour security of the working areas within the park.

Public access into the park from Cabrol Road and the A325 will be maintained throughout installation. The only exception is when we will have to temporarily suspend pedestrian and cyclist access from the southern A325 entrance for one to three days whilst the short section of open-cut crosses the path. Suitable notices will be placed in the park prior to this work taking place.

To reduce disruption to the park, our route largely follows the southern cycle/pedestrian path. This means use of the path will be suspended during our open-cut works.

Parking at the Cabrol Road car park will be suspended whilst the construction compound is in use. The northern A325 car park will not be impacted by our works.

We will need to remove the current play area so that we have space to install our construction compound within the park. Before removing the current play area, a new play area will be installed elsewhere in the park. We have held discussions with Rushmoor Borough Council on the best location for this and will be undertaking public engagement later in the year for you to have your say on the new equipment being installed.

Once we have completed our installation works in the park, we will replace the current play area with new equipment. We have also offered to leave the new play area installed, even after the original playpark is reinstated.

The local landscape character of the Order Limits that pass through the park comprises informal paths within amenity grassland shrubs beneath mature trees to the north, and a denser woodland area with dense rhododendron and secondary tree growth and a formal cycle/pedestrian path to the south.

Any necessary vegetation clearance works will take place before the construction fencing is erected. During the clearance works, signage will be placed within the park to notify park users.

Our team have completed tree surveys within the park. Our engineers are confident that installation will not require the removal of any mature or veteran trees.

We plan to remove 31 non-mature trees, largely adjacent to the cycle/pedestrian path. These trees are in areas previously discussed with Rushmoor Borough Council.

Vegetation will only be removed within a 10m wide working area for the open-cut works, the construction compound and the two trenchless areas. We will not remove vegetation outside of these areas, unless agreed with Rushmoor Borough Council.

We will not be removing vegetation that forms the boundary between the park and the residential properties to the south.

We will be using tried and tested techniques to work around tree roots through the park. This will include hand digging and use of air spades around roots to ensure we carefully navigate them.

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.

We have carefully considered the open-cut works for the pipeline and chosen the alignment which retains trees and where possible reduces work within the root protection areas. As part of our submissions to Rushmoor Borough Council, we have identified the trees that need to be removed.  We have also committed to use specialist techniques to safeguard the retained trees. We have provided a non-technical summary of open-cut techniques through root protection areas in Queen Elizabeth Park available here.

As the Development Consent Order (DCO) has already been granted, we are unable to change the Order Limits and therefore cannot change the route of the pipeline.

We will be using an open-cut technique to install the replacement pipeline through the park. Find out more about this technique here. We have committed to narrow working for the open-cut works, reducing the working area to a 10m width.

As the Development Consent Order (DCO) has already been granted, we are unable to change the Order Limits and therefore cannot change the route of the pipeline.

As part of our detailed design and construction planning, we have needed to adjust the pipe alignment to avoid thrust blocks associated with the existing sewer (concrete located underground that prevents the sewer from moving). The changes have been considered alongside the potential impact on vegetation. The result is a 1-2m adjustment to the proposed alignment in some locations. This does not affect the 10m working area required to manage the work. This means 5 different trees now require removal, and 4 no longer require removal.

Before the open-cut works can commence, the working area will be fenced, then topsoil will be stripped from the area required for the 1m wide trench.

We have committed to narrowing the working area to 10m wide with an approximate working length of 50m. This allows us to segregate the ‘live’ working area from the publicly accessible areas of the park. As the works progress, the fenced area will be relocated/extended so that no more than 50m of continuous fencing is in place.

Trees that are being retained will be protected from installation activity in line with the protective principles set out in the British Standard. See the ‘working around trees’ section of this page for further details.

When undertaking fabrication works (such as grinding, welding, coating and testing), screens will be erected in order to reduce impacts on the users of the park. These screens will also include acoustic protection if required.

Since receiving consent, we have continued to look for the most effective and least disruptive way to install the replacement pipeline in the most sensitive locations. In the park, we are now going to use a different trenchless technique called E-power.

E-power is a similar technique to Horizontal Directional Drilling (HDD) and it does not require any more space or a larger working area. E-power will allow us to remove the stringing activity from the park and means we avoid removal of the Stakes Lane garages, (as the two trenchless crossings can be combined).

To remove the stringing from the park, we will locate the E-power drill within the park. This will be located near to our compound at the Cabrol Road entrance, previously described as the HDD receiving area. We have updated the noise assessment and along with our existing commitment to using noise mitigation, the conclusions of the assessment are the same as within the consented DCO.

Since receiving consent, we have continued to look for the most efficient and least disruptive way to install the replacement pipeline more suited for each individual location.

When exiting the park, we will be using a Horizontal Directional Drill (HDD) trenchless technique to cross below the A325. The launch area for the HDD is shallower than for an auger bore meaning we can use smaller, less intrusive equipment for the installation.

Vegetation will need to be cleared from this area, but no mature trees will be removed. The area will then be scanned for utilities and ground protection will be laid to reduce need for topsoil stripping.

The working area is within the Order Limits in the granted DCO.

Necessary materials for the trenchless drill area will be brought into the park via Cabrol Road.

To safely bring materials into the trenchless drill area from the A325, and subject to a permit from the Highway Authority, traffic management will be set up on the northbound carriageway of the A325. This will notify road users that traffic will be pulling off the carriageway and into the receiving area, and that vehicles will be re-joining the carriageway from the area, heading north only.

A lightweight low loadbearing ramp will be constructed from the A325 down into the receiving area in the park. The construction ramp will be designed to have minimal impact on the root protection areas.

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

The Cycle/Pedestrian Path

The cycle/pedestrian path in the south of the park will be reinstated once the open cut works are complete. This will include reinstating the lighting and further details of this reinstatement will be agreed with Rushmoor Borough Council.

Vegetation Reinstatement

We have proposed that the areas of rhododendron either side of the southern cycle/pedestrian path will be reinstated with a mix of woodland species, which will create the feel of a woodland ride and lead to an increase in biodiversity.

The vegetation will be subject to a five-year aftercare period to ensure it becomes established.

The drawings are currently being updated.