Working Together

• Integrated programme with East West Rail (EWR) • FCC – sidings to be moved from north to south Nature Reserve location

ERW2 OXD Line • Oxford to Bicester line is handed over to EWR in Existing FCC – Bicester to Sidings Bletchley early 2023

FCC Landfill • Access to Infrastructure Maintenance Depot is Site required by HS2 Rail Systems in early 2024

FCC Energy from • HS2 and the Marylebone to Claydon Junction line Waste Plant (MCJ) share a narrow combined corridor Greatmoor` Road • Working with leading ecological consultants and Natural to protect the Bechstein Bats Key which are a European protected species

Station Road HS2 Route • Highways constraints – maintain access between OXD Line villages during construction MCJ Line

1MC06-CEK-SE-PRE-CS06_CL09-000002 Working Towards

Infrastructure Maintenance Depot (IMD) and the Southern Access Chord

We are looking to reduce the overall footprint of the IMD and remove the track between the HS2 line and the IMD to enable: • Less visual impact • Less permanent land taken by HS2 • Less vegetation clearance undertaken in the future, ahead of construction • Quicker construction programme (reduced earthworks, drainage and track works) • Less maintenance during operation

Track level

Proposal to raise the track to enable: • Retaining wall can be simplified reducing time to construct, noise and vibration • Retaining wall will be reduced in length (approx. 1km) • Reduction in excavation of material by 0.6 million m3 • Removal of complicated drainage. 9 No. pumping stations reduced to 1 No. • Significant reduction in the power supply required for the area • Reduced depth of under track crossings for utilities Resulting in a quicker construction programme with fewer construction workers required to work in the local area

1MC06-CEK-SE-PRE-CS06_CL09-000002 1MC06-CEK-SE-PRE-CS06_CL09-000002 Consequences

Visual Impact

• Height of railway increase in the landscape; depot height reduces • Additional landscaping, planting and noise barriers to be provided

Operational Noise

• HS2 will ensure compliance with Environmental Minimum Requirements and will need to prove compliance to AVDC to gain approval for the works • No noticeable effects from operational noise

1MC06-CEK-SE-PRE-CS06_CL09-000002 1MC06-CEK-SE-PRE-CS06_CL09-000002 Our approach

1MC06-CEK-SE-PRE-CS06_CL09-000002 Our approach to the works

HS2 and its contractors will adhere to the Environmental Minimum Requirements (EMRs) in designing and constructing the Phase One of High Speed Two works.

All construction activities associated with HS2 will be delivered in accordance to the Code of Construction Practice (CoCP).

This provides extremely high standards across all construction activities which are applied to all contractors throughout the construction of HS2.

1MC06-CEK-SE-PRE-CS06_CL09-000002 Our approach to the works

Sequencing the construction of highway Minimise disturbance on roads maintaining structures access between villages

Reduction in excavation of earthworks Less vehicle movements - all bulk earthworks by 0.6 million m3 remain on line of route. Priority will be given to use local fill where possible

Internal Site Access Road to be built to Keep construction traffic off the public road accommodate construction traffic along the where possible - construction traffic will access line of route from permitted routes and transport materials Use of Rail to transport materials along the internal access road

Reduce noise, dust and vibration by reviewing Construction methodology reviewed our construction techniques

1MC06-CEK-SE-PRE-CS06_CL09-000002 Minimising impact on our Environment

Landscaping being developed to increase biodiversity Minimising future vegetation clearance in the local area. It will be conducted early in the works to allow the land to mature as quickly as possible Noise mitigation to be reviewed, balancing barriers with earthwork bunds and Construction methodology reviewed to reduce levels landscaping of construction noise, dust and vibration

Green overbridges will promote ecological

Reducing CO2 emissions by having less vehicle connectivity movements

Site access road to reduce road traffic noise Significantly reduced power supply required with the and pollution removal of eight pumping stations

1MC06-CEK-SE-PRE-CS06_CL09-000002 Programme and Sequencing

1MC06-CEK-SE-PRE-CS06_CL09-000002 Programme

1MC06-CEK-SE-PRE-CS06_CL09-000002 Keeping connectivity between the villages

West Street Road (new alignment)

Calvert Road

Highway works will be sequenced to ensure that we maintain connectivity between the villages. West Street and Calvert Road will not be closed at the same time.

Gawcott Road will remain open during the construction of the realignment with minimal weekend or night time road closure for the tie-in works. The above aerial photograph illustrates the potential for a staged diversion of the gas main and road realignment.

1MC06-CEK-SE-PRE-CS06_CL09-000002 General Works Sequence 2020

Steeple Claydon

✓ 1 – EWR Overbridge

✓ 2 – Lodge Underbridge 5

✓ 3 – Perry Hill Overbridge (Gawcott Rd)

✓ 4 – West Street Overbridge

✓ 5 – Addison Road Overbridge

1 3 4 2 Calvert Twyford

1MC06-CEK-SE-PRE-CS06_CL09-000002 General Works Sequence 2021 / 2022

✓ 1 – IMD Platform Earthworks (west of Addison Road) ✓ 2 – SCL/8 Overbridge 2 ✓ 3 – Calvert Green Overbridge

✓ 4 – SCL/13 Overbridge

✓ 5 – OXD/HS2 Plug earthworks

✓ 6 – OXD Embankment (west of Addison Road) 6 1 ✓ 7 – Secant Pile Wall

✓ 8 – Calvert Cutting North 3 4

5 7 8 Calvert Twyford

1MC06-CEK-SE-PRE-CS06_CL09-000002 General Works Sequence 2022 / 2023

✓ 1 – OXD Embankment (west of HS2 trace – Steeple continuation) including Gawcott Road earthworks Claydon 5 ✓ 2 – Earthworks preparation for Cut-off Wall 6 ✓ 3 – Cut-off Wall

✓ 4 – Calvert Road Overbridge

✓ 5 – OXD Embankment (east of Addison Road)

✓ 6 – IMD Platform (east of Addison Road)

✓ 7 – Calvert Cutting South 7 4

2 3

Calvert Twyford 1

1MC06-CEK-SE-PRE-CS06_CL09-000002 Internal Access Road for Construction Traffic Only

One of the very first activities when we start construction will be to build an internal access road which will run parallel with the line of the HS2 route (see yellow line on the map). This will enable us to:

• Take construction traffic off the local highway • Connect our worksites • Where it crosses the public highway there will be safe managed crossings (typical layout below)

1MC06-CEK-SE-PRE-CS06_CL09-000002 Construction Traffic Route and Worksites

From the South, the main route for this area will be from Jct 9 of the M40 along the A41. Access A421 London Road points from the A41 will be via:- HGV and Workforce access. Main access to Calvert North area upon Access Road • Grendon Road construction • FCC Greatmoor Road West Street • Station Road HGV and Workforce access. Main Calvert area compound • A41 at Calvert Road HGV access only Proposed batching plant From the North, the main location route for this area will be from FCC HGV Access the A43 on to the A421. Access only points from the A421 will be Station Road Workforce and initial the Gawcott Road. HGV access Access to Calvert South

A41 Bicester Road Workforce and HGV As soon as the internal access access. Access to Calvert South road is constructed the use of upon Access Road these roads will be reduced construction

1MC06-CEK-SE-PRE-CS06_CL09-000002 Movement of earthworks materials and stockpile areas

Steeple Claydon OXD Embankment

IMD Platform

Temporary Stockpile Areas Excavated material to IMD platform and landscaping bunds Calvert Cutting Rail deliveries from South the South

Calvert Cutting North HS2/ MCJ Lines Excavated material to highway and Excavated material Calvert Earthwork materials to highway and landscaping from the North Twyford landscaping Gawcott Road

24 1MC06-CEK-SE-PRE-CS06_CL09-000002 Controls

1MC06-CEK-SE-PRE-CS06_CL09-000002 Noise, Vibration and Dust Monitoring

Air Quality Monitoring Station These two monitors would be in place Noise & Vibration during the demolition Monitoring Station of the 12a, 12b Brackley Lane, the Station House, peak earthworks, and the construction of School Hill Overbridge

These two monitors would be in place during peak earthworks, installation of the proposed retaining wall and construction of Calvert Green Overbridge

1MC06-CEK-SE-PRE-CS06_CL09-000002 Air Quality Management

• Eiffage Kier are developing an approach to air quality management that adheres with HS2’s air quality requirements and best practice guidelines. • A number of measures will be utilised on site to reduce the potential negative impacts on air quality. These might include:

using the latest emission standard using dust suppression for very seeding temporary earth bunds using enclosures for cutting to vehicles and generators on site dusty activities and permanent earthworks early reduce the risk of dust escaping

1MC06-CEK-SE-PRE-CS06_CL09-000002 Construction Noise and Vibration Management

• Eiffage Kier shall apply “Best practicable means (BPM)” to minimise noise and vibration for neighbouring residential properties and other sensitive receptors during construction.

• Noise and vibration will monitored where there is the highest risk of exceedance of the various limits set by HS2 using meters set with alarm notifications for site teams to act on.

using temporary noise barriers around using noise monitors for high risk activities high risk activities to ensure limits are adhered to

1MC06-CEK-SE-PRE-CS06_CL09-000002 Operational Noise – day time

Noise model updated to suit revised design alignment

Key findings: • Some beneficial change • Minimal adverse change (<1.0 dB)

1MC06-CEK-SE-PRE-CS06_CL09-000002 Operational Noise – night time

Noise model updated to suit revised design alignment

Key findings: • Some beneficial change • Minimal adverse change (<1.0 dB)

1MC06-CEK-SE-PRE-CS06_CL09-000002