The Arncliffe Motorways Operations Complex has been constructed as part of the M8 project. A substation, water treatment facility and mechanical fit out of the ventilation facility will be used as part of the M6 Stage 1 project.

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The ventilation outlet was constructed as part of the M8 motorway project and will be use as part of the M6 Stage 1. Elevated ventilation outlets are very effective at ejecting tunnel air high into the atmosphere through a combination of buoyancy and speed.

Once in the atmosphere, the ejected tunnel air dilutes rapidly as it mixes with the surrounding air and becomes indistinguishable from background levels.

Air quality will be continuously monitored at the ventilation outlet to control the ventilation system. This ensures the strict limits outlined in the approval conditions are complied with at all times. Once operating, air quality monitoring data will be publicly available on the new motorway website.

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The M6 tunnels are excavated using roadheader machines and a combination of drilling and blasting methods to help reduce the duration of the excavation process.

Placeholder – TBC The tunnels will be built for three lanes but initially marked for two.

Placeholder – TBC The tunnels will be built for three lanes but initially marked for two.

The twin tunnels will include entry and exit ramps on President Avenue.

The areas around the tunnel portal entry and exit ramps will be planted with vegetation to reflect nearby wetlands.

Treats runoff from the tunnel portal and water sensitive urban design discharges it into existing waterways.

New cul-de-sac at O’Neill Street.

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A new shared cycle and pedestrian bridge over President Avenue.

The new shared cycle and pedestrian bridge over President Avenue provides direct access between to Scarborough Park North and Bicentennial Park.

New shared cycle and pedestrian pathways connecting Bestic Street, Brighton-Le-Sands to Civic Avenue, Kogarah through the reinstated Rockdale Bicentennial Park. This supports healthier communities and provides safe and direct routes to local centres, schools and other destinations.

Shared cycle and pedestrian pathways from Bestic Street, Brighton-Le-Sands south to Civic Avenue, Kogarah through the reinstated Rockdale Bicentennial Park. This supports healthier communities and provides safe and direct routes to local centres, schools and other destinations.

The Motorway Operations Centre will operate 24 hours a day, seven days a week to monitor and operate the tunnel.

This Motorways Operations Complex consists of the West Botany Street Ventilation facility, substations and power supply for the tunnels, car parking and a disaster recovery site.

The southern West Botany Street ventilation outlet will be constructed in the industrial zone on West Botany Street, and the design will take into account its surrounding environment.

Elevated ventilation outlets are very effective at ejecting tunnel air high into the atmosphere through a combination of buoyancy and speed.

Once in the atmosphere, the ejected tunnel air dilutes hundreds of times as it mixes with the surrounding air and becomes indistinguishable from background levels.

Air quality will be continuously monitored at the ventilation outlet to control the ventilation system. This ensures the strict limits outlined in the approval conditions are complied with at all times.

Once operating, air quality monitoring data will be publicly available on the new motorway website.

Placeholder – TBC Breakdown bays allow for safer pullovers and maintenance operations.

Placeholder – TBC Mainline tunnel stubs to connect to future stages of the F6 Extension.

Placeholder – TBC Cross passages allow for emergency and maintenance access between tunnels.

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• Construction of an acoustic shed
• Tunnel excavation and other tunnelling work
• Stockpiling of spoil and spoil haulage
• Construction of an access point (decline) leading into the tunnels
• Construction of a substation and water treatment facility
• Fit-out of a ventilation facility being constructed as part of the M8 motorway project

Construction hours

Monday to Friday 7am to 6pm

Saturdays 8am to 1pm

Tunnelling and spoil management will be carried out at this site 24 hours a day, seven days a week.

Spoil will be stored on site and removed during standard construction hours. Where we may need to remove spoil or take delivery of material that cannot be transported during standard construction hours, the community will be notified in advance.

Indicative construction program

Work will occur on this site for around four years.

Site is currently being used for the M8 motorway construction. Construction vehicles workers for the project will enter and exit the Arncliffe construction site directly from Marsh Street using the existing signalised intersection (left-in and right-in, left-out only).

• Construction of an acoustic shed
• Tunnel excavation and other tunnelling work
• Stockpiling of spoil and spoil haulage
• Construction of an access point (decline) leading into the tunnels
• Construction the Operational Motorway Control Centre

Construction hours

Monday to Friday 7am to 6pm

Saturdays 8am to 1pm

Tunnelling and spoil management will be carried out at this site 24 hours a day, seven days a week.

Spoil will be stored on site and removed during standard construction hours. Where we may need to remove spoil or take delivery of material that cannot be transported during standard construction hours, the community will be notified in advance.

Indicative construction program

Work will occur on this site for around four years.

Construction vehicles workers will enter and exit the Rockdale construction site directly from West Botany Street. Temporary traffic signals will be installed to manage traffic flow so vehicles can enter and exit the site in all directions.

• Demolition of buildings and vegetation clearing and removal
• Relocation of utilities
• Temporary stockpiling of spoil and fill materials
• Management of any contaminated land, including acid sulphate soils
• Construction of cut-and-cover structures for entry and exit ramps and the portal
• Construction of the Rockdale Motorways Operations Complex (south) and the Rockdale ventilation facility and substation
• President Avenue intersection upgrade works
• Construction of shared pedestrian and cyclist path and overpass

Construction hours

Construction at this site will be limited to standard construction hours, where feasible and reasonable:

Monday to Friday 7am to 6pm

Saturdays 8am to 1pm

Some work on may need to be carried out at night. The community will be notified in advance if this is required.

Indicative construction program

Work will occur on this site for around three years.

Construction vehicles can enter and exit the President Avenue construction site from President Avenue (left in/left out only).

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• Site establishment
• Vegetation clearing and removal, topsoil stripping areas and preparing the land for the construction of the pathways.
• Excavation of spoil and offsite removal
• Installation of utilities for lighting
• Concreting of the new pathways
• Installation of lighting, line marking and signage

Construction hours

Monday to Friday 7am to 6pm

Saturdays 8am to 1pm

Indicative construction program

Work will occur on this site for around two years.

• Site establishment
• Vegetation clearing and removal, topsoil stripping areas and preparing the land for the construction of the pathways.
• Excavation of spoil and offsite removal
• Installation of utilities for lighting
• Concreting of the new pathways
• Installation of lighting, line marking and signage

Construction hours

Monday to Friday 7am to 6pm

Saturdays 8am to 1pm

Indicative construction program

Work will occur on this site for around two years.

• Removal of the current buildings including the petrol storage tanks and the rehabilitation of the site
• Relocation of current utilities, stormwater infrastructure and the substation
• Laydown of materials and equipment and parking of construction vehicles
• Road upgrade work along the Princes Highway and President Avenue
• Rehabilitation and landscaping work.

Construction hours

Monday to Friday 7am to 6pm

Saturdays 8am to 1pm

Some work will need to be carried out at night. The community will be notified in advance.

Indicative construction program

Work will occur on this site for around three years.

Truck movements and haulage routes will be restricted to main roads, including access to and from construction sites, to avoid local or residential street and for the safety of pedestrians and road users.

Truck movements and haulage routes will be restricted to main roads, including access to and from construction sites, to avoid local or residential street and for the safety of pedestrians and road users.

Truck movements and haulage routes will be restricted to main roads, including access to and from construction sites, to avoid local or residential street and for the safety of pedestrians and road users.

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New service utilities include a permanent power supply line from Canterbury substation.

The new shared pedestrian and cyclist pathway has been extended south ending in Chuter Avenue, Monterey.

View changes in the Preferred Infrastructure Report (PIR)

Recognising the impact on recreational and sporting facilities within Bicentennial Park during construction, we will be providing new and upgraded facilities to compensate for this loss of recreational and open space.

Roads and Maritime is proposing to relocate the existing playground in the Ador Park/McCarthy Park Precinct. The final location will be determined in consultation with local Council and the Stakeholder Liaison Group, as well as input from the local community.

Note: This proposal is not detailed in the EIS and will be subject to separate planning approvals. We will continue to engage with Bayside Council, the Stakeholder Liaison Group and local community to refine this proposal.

The tunnel has been located to avoid the Kings Wetland.

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The bridge will be reinstated with a new viewing deck.

The propose upgrade to the Memorial Playing fields during construction will be developed in consultation with all stakeholders including the school, as we understand it is important to maintain the schools current use of this recreation space. The design proposes:

• Construct a new full size synthetic field
• Establish new smaller sized grass fields
• Install new lighting to improve security and extend the usage of the facilities
• Install new drainage to improve water flow
• Provide new amenity block facilities

Note: This proposal is not detailed in the EIS and will be subject to separate planning approvals. We will continue to engage with Bayside Council, the Stakeholder Liaison Group and local community to refine this proposal.

The Rockdale Wetlands will be revegetated.

The tunnel design and construction impacts avoid the Illinden Sports Centre

The reinstatement of Rockdale Bicentennial Park and the East Bicentennial Playing Fields will be finalised through consultation with Bayside Council, community and sporting groups, the Stakeholder Liaison Group and through community feedback.

We are proposing to reinstate the recreational facilities and playing fields with the potential to provide one full size grass field and smaller size grass fields.

Recognising the impact on recreational and sporting facilities within Bicentennial Park during construction, we will be providing new and upgraded facilities to compensate for this loss of recreational and open space.

Roads and Maritime is proposing to relocate the existing skate park in the Ador Park/McCarthy Park Precinct. The final location will be determined in consultation with local Council and the Stakeholder Liaison Group, as well as input from the local community.

Note: This proposal is not detailed in the EIS and will be subject to separate planning approvals. We will continue to engage with Bayside Council, the Stakeholder Liaison Group and local community to refine this proposal.

Consultation began in October 2017 with community engagement activities such as doorknocking, the distribution of community updates, pop up events at local shopping centres and briefings with key stakeholders, schools and government agencies. This feedback informed the environmental assessments on increased traffic and congestion, loss of property and green space, local air and water quality as well as noise and emissions from ventilation outlets. From June to August 2018 extensive consultation was carried out to support the release of more detailed project information and design and seek further community feedback.

Download the community update

Consultation for the project started in October 2017, following the NSW Government’s announcement to proceed with the M6 Stage 1.

Further consultation with the community and stakeholders was carried out between June and July 2018 when the new project and design information was released.

A Stakeholder Liaison Group was established, which includes Bayside Council and invited representatives from different user groups to meet to discuss construction impacts in the park and reinstatement and future uses once construction is complete. The first meeting was held late October.

Download the community update

Vehicles using tunnels reduces the number of vehicles on surface roads, improving air quality along The Grand Parade and General Holmes Drive by 0.2 to 2 microgram per cubic metre.

Vehicles using tunnels reduces the number of vehicles on surface roads, improving air quality along Marsh Street, Airport Drive and Princes Highway by 0.2 to 2 micrograms per cubic metre.

President Avenue and the tunnel portal entry will see a minor increase of 0.2 to 2 micrograms per cubic metre due to more vehicles using this road to enter the tunnel.

The emissions from the M6 Stage 1 tunnel will be dispersed high in the air from the ventilation tunnel on West Botany Street. By dispersing high into the atmosphere the result is no change to existing air quality parameters at or around the ventilation outlet site.

Under expected traffic conditions for the project, the predicted contribution of tunnel ventilation outlets to local air quality is negligible.

This is indicative of one construction site however there are multiple construction sites to support the construction of the project.

Construction noise mitigation measures include:

• Use of acoustic sheds at Arncliffe and Rockdale (north) providing for 24-hour spoil storing.
• Site hoarding at Arncliffe and Rockdale (north).
• Consideration of site layout and equipment selection.
• Advanced community notification of work outside standard construction hours.