Notice of works to build the Greenpark Way ventilation shafts

What we are doing

Works to build the ventilation shafts from May 2022
From 16 May 2022, we will start works to build the ventilation shafts at
our Greenpark Way site in Greenford.
We will build a main ventilation shaft which will be 20 metres wide and a
satellite shaft which will be 15 metres wide. Both shafts will be 45
metres deep and will connect to the HS2 tunnels. We will start
constructing the tunnels in this area from 2023 and will provide more
information in advance of these works.
The construction team will build the ventilation shaft in stages:
1. We will excavate a large hole in the ground to build the
segmental rings and concrete collar.
2. We will pour concrete to secure the collar in place while
installing segmental rings as we build further into the ground
3. As the segmental rings are installed, we will push clay (ground
material) up against the bottom of the rings to close the gap
within the shaft. This will be done after one or two rings are
installed.
4. The above method will be repeated until the shaft reached the
required depth.
The map on the following page shows the location of these works.
The dates for these works may change due to unforeseen
circumstances. We will provide updates about our works at
HS2.org.uk/in-you-area/

Our working hours
From May 2022, we will extend our working hours to 24 hours a day on Mondays to Fridays. We will continue to work on Saturdays from 8am to 1pm.

How we will minimise disruption
To help reduce disruption, we will:
 Use water sprays to minimise dust on-site
 Monitor noise, dust and vibration levels throughout construction and introduce additional
mitigations if needed
 Keep stakeholders informed about our works
Upcoming works at Greenpark Way

In addition to shaft construction, we will be carrying out the following works from May 2022 to July 2022
 Shaft dewatering – removal of water from ground as shaft is constructed
 Utility surveys in your local area
 Network Rail track maintenance works (every three months)
The map on the following page shows the location of these works.

Speak with our local engagement team
Our local engagement team is happy to arrange a time to speak with you via phone if you have any questions about the Greenpark Way site. Please contact the HS2 Helpdesk via the contact details below to arrange this.

Download information relating to these works

• Notice of works to build the Greenparkway Ventilation shafts

If you have a question about HS2 or our works, please contact our HS2 Helpdesk team on 08081 434 434 or email [email protected]