In Your Area 1 – Primrose � Hill to Old Oak Common �

LOCAL AREA High Speed Rail Consultation In Your Area 1 – Primrose � Hill to Old Oak Common �

Find out here about: • � what is proposed between Primrose Hill and Old Oak Common; • � what this may mean for people living between Primrose Hill and Old Oak Common; • � what could happen during construction; and • � possible additional local benefits.

What is proposed between The tunnels (illustrated below) would continue Primrose Hill and Old Oak north-westwards generally running underneath the existing West Coast Mainline railway Common? corridor to the east of Primrose Hill. The tunnel The proposed HS2 tracks would pass for the link to High Speed 1 follows the same northwards from Euston within an existing deep alignment. Beyond Adelaide Road, the tunnels narrow railway cutting towards Parkway where would pass westwards deep beneath the they would descend into a twin tunnel. existing railway tunnels in the area of Swiss

Tunnel route

Cottage and then below the West Coast What would I notice above ground? Mainline in the vicinity of South Hampstead The only sign of the tunnels on the surface railway station. would be the vent shafts, which would be designed to blend in and fit the local area. From here the tunnel would run in a south westerly direction, just to the south of the The area above the tunnels is densely West Coast Mainline, passing under the areas populated. However, we would design and of Kilburn, Queens Park and Kensal Green. construct the tunnels to avoid any perceptible The tunnels would then pass deep beneath effects. All properties above the tunnels would Kensal Green Cemetery and into the proposed be independently surveyed before and after station at Old Oak Common. construction to reassure residents and confirm we haven’t caused any problems. In order to gain access to the railway, should any emergencies occur, three vents shafts The engineering design of HS2 would build on would be required on this part of the route. the application of proven technologies implemented successfully in similar tunnels on What this may mean for people HS1 and now planned for Crossrail. As a result, living between Primrose Hill and vibration would be imperceptible and people Old Oak Common should not be disturbed by ground borne noise.

What happens below ground? Vent Shafts There would be three rail tracks on this section; Tunnel ventilation shafts are vertical shafts two for the main high speed line and one for the connecting a tunnel below the ground to the link to the Channel Tunnel Rail Link north of surface above. They would provide emergency Kings Cross. The tunnels have been designed ventilation and the ability to remove smoke from to avoid adverse effects on residential property the tunnels should an incident occur below by being located at a significant depth, ground. Ventilation fans would need to be approximately 25-45m below ground level. activated to remove the smoke and noise and may be noticeable at the time of an emergency There would be one tunnel for each of the three incident or during the maintenance and testing tracks. Each of these would be about 7.25m of the equipment. However, in normal in diameter. The tunnels would be linked by circumstances there would be no noise from cross-passages built every 500m. The purpose the vents shafts. of the cross passages would be to enable escape from one tunnel to the other in the There are three proposed locations within remote event of an emergency. London for vent shafts. Adelaide Road This vent shaft would sit between the existing railway and Adelaide Road, opposite Eton Road. It would be located to the east of a nature reserve and at the base of a railway embankment. railway andAlexandraPlaceW This ventshaftwouldbelocatedbetweenthe Alexandra PlaceWest building andparkingfrom view. Road. Plantingwouldbeusedtoscreen the two storeys wouldbevisiblefrom Adelaide located atthebaseofanembankment,only five storeys highbutbecauseitwouldbe The proposed buildingwouldbeapproximately Licencenumber0100049190 OrdnanceSurvey Source: ©Crowncopyrightanddatabaseright2010.Allrightsreserved. park. Again, thebuildingwouldbe designedto existing site ofasmallofficebuilding andcar The shaftatSalusbury Road wouldtakethe Salusbury Road storeys high. The buildingwouldbeapproximately two surrounding properties instyleandmaterial. The buildingwouldbedesignedtomatch replace asmallblockofshops,withflatsabove. Proposed ventshaftlocationsfortheLondontunnel ° Alexandra Place West Place Alexandra School School 119

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Noise Impact Key Primrose Hill to Old Oak Common Areas where dwellings are within HS2 Noise Appraisal Criteria with Additional Indicative Mitigation Key Environmental Features World Heritage Site High HS2 Noise Levels SSSI Within the areas which could qualify for noise insulation we have also identified locations which could be Ramsar exposed to “high” average noise levels i.e. greater than or equal to 73dBLAeq18hr. This is the level taken from the Environmental Noise Regs. Special Conservation Areas Special Protected Areas Noise Insulation (NIRR) Scheduled Monuments Areas which could have a requirement for noise insulation (based on regulations) where façade noise levels Registered Parks and Gardens are more than 68dBL with a 1dB increase or more. Aeq,18hr Area of Outstanding Natural Beauty Noticeable Noise Increase National Nature Reserve Areas which could have a noticeable change in average daytime railway noise levels where the predicted National Park Historical Battlefields noise level is more than 50dBLAeq,18hr and there has been a 3dB increase or more. !. Listed Building Grade I Listed Building Grade I !. Listed Building Grade II* Listed Building Grade II* WCML Proposed Route Surface Cutting Green Tunnel Tunnel Viaduct HS1 Connection Surface Tunnel

Primrose Hill to Old Oak Common In this location, the route is virtually all within tunnel so noise from trains, would not be heard. That is why there are no noise effects shown on this map. The new Euston station would be 2 metres lower than current arrangements. We would intend to cover the station and potentially parts of the approaches for over-site development. This would offer opportunities to contain noise in this area. The design of the London tunnels on HS1 has successfully avoided ground-borne noise (low frequency rumbling) and vibration in dwellings and other buildings. The design of HS2 would build on this experience ensuring that vibration would be imperceptible and that I ground-borne noise would not disturb people or affect their quiet enjoyment of their homes. 0 0.4 0.8 1.2 Vent shafts would be provided at points to serve the tunnels in the event of emergency. The buildings would contain fans which would only operate in emergencies and for km

occasional testing. In day to day use, the buildings would be passive and would not This map is reproduced from Ordnance Survey material with the permission generate any noise. of Ordnance Survey on behalf of the Controller of Her Majesty's Stationary Office © Crown copyright

0100049190 High Speed Rail Consultation In Your Area 1 – Primrose Hill to Old Oak Common

What would happen during If you would like more detail on construction? this topic

Apart from work to construct the tunnel Please visit our website – entrance at Parkway and the vent shafts, the http://highspeedrail.dft.gov.uk/ – where you will tunnel on this section of the proposed HS2 see the “High Speed Rail: Investing in Britain’s route would be built entirely from below ground. Future – Consultation” and the supporting We would use tunnel boring machines to documentation, as well as detailed maps of the minimise ground settlement and hand tools for proposed route between London and the West the cross passages. Excavations would Midlands, images and visualisations. commence from the Old Oak Common Station site with work then proceeding towards Euston. The vast majority of construction activity would take place at Old Oak Common on existing railway land away from residential areas. We would establish a construction site there containing staff offices, storage for materials and plant and providing a means to remove the earth dug from the tunnels. Construction would take four years, with the tunnel boring machine advancing forwards about 15m per day. We would aim to minimise effects on local roads by maximising the use of rail and perhaps making use of the adjacent Grand Union Canal.

Construction code of practice The work required to build both the tunnel and the vent shafts would be controlled and managed through a code of practice for construction that would provide contractual obligations upon builders to ensure, for example, that construction, noise and dust would be kept to a practicable minimum. Modern construction techniques, modern plant and effective management controls would be applied to ensure minimal disruption to local people. We would work with local residents, businesses and local councils to minimise any impact during construction.

High Speed Rail Consultation In Your Area 1 – Primrose Hill to Old Oak Common