m7 asphalt resheeting stage 1 - roam · m7 asphalt resheeting stage 1 ... to document the likely...

Transport Roads & Maritime Services

NSW GOVERNMENT

M7 Asphalt Resheeting Stage 1 Review of environmental factors

November 2016

I Introduction

WSO Co Pty Limited intend to undertake asphalt resheeting of the M7 Motorway. WSO Co have engaged Westlink Services Pty Limited as their Principal's Representative to assist with the planning and delivery of the Works. Westlink Services have prepared this Minor Works REF for the proposed works to be carried out in accordance with the Western Sydney Orbital Operations and Maintenance Deed with WSO Co Pty Limited.

The purpose of the Minor Works REF is to describe the proposal, to document the likely impacts of the proposal on the environment, to detail mitigation measures to be implemented and to determine whether the project can proceed. For the purposes of these works Roads and Maritime Services is the determining authority under Part 5 of the Environmental Planning and Assessment Act 1979 (EP&A Act).

The description of the proposed works and associated environmental impacts have been undertaken in the context of clause 228 of the Environmental Planning and Assessment - Regulation 2000, the Threatened Species Conservation Act 1995 (TSC Act), the Fish.eries Management Act 1994 (FM Act) and the Australian Government's Environment Protection and Biodiversity Conservation Act 1999 (EPBC Act). In doing so the REF helps to fulfil the requirements of section 111 of the EP&A Act, that Roads and Maritime Services examine and take into account to the fullest extent possible all matters affecting or likely to affect the environment by reason of the activity.

The findings of the REF would be considered when assessing:

• Whether the proposal is likely to have a significant impact on the environment and therefore the necessity for an environmental impact statement to be prepared and approval to be sought from the Minister for Planning and Infrastructure under Part 5.1 of the EP&A Act.

• The significance of any impact on threatened species as defined by the TSC Act and/or FM Act, in section 5A of the EP&A Act and therefore the requirement for a Species Impact Statement.

• The potential for the proposal to significantly impact a matter of national environmental significance, including nationally listed threatened biodiversity matters, or Commonwealth land. Where a significant impact is considered likely on nationally listed biodiversity matters, either the proposal must be reconsidered or a Project REF must be prepared.

M7 Asphalt Resheeting — Stage 1 2 Minor Works Review of Environmental Factors

2 The proposal

2.1 Description

Title: M7 Asphalt Resheeting — Stage 1

File number: RPT-2314

Road name and number: M7 Motorway

Closest cross road(s): M5 Motorway, Bernera Road, Hoxton Park Road, Cowpasture Road and Elizabeth Drive.

Chainage of works: Chainage -730 to 12700

Local government area: Liverpool City Council and Fairfield City Council

Roads and Maritime Services region: Sydney Metropolitan

Description of works:

Background

The M7 motorway is a 40 km long four lane, dual carriageway tollway linking the M5 at Prestons, the M4 at Eastern Creek and the M2 at West Baulkham Hills to form a part of the orbital network of motorways in Sydney. The motorway was constructed from July 2003 and opened to traffic in December 2005. Vehicles on Westlink M7 travel at variable speeds up to 100 km/h. The M7 comprises four lanes with a dual carriageway both directions. A 40 km off-road shared cycle/pedestrian pathway follows the length of the motorway.

Seventeen interchanges along the motorway provide access to the communities of Liverpool, Fairfield, Blacktown and Baulkham Hills, and 38 underpasses and overpasses maintain local access for pedestrians, cyclists and motorists along the full length of the motorway.

The proposal is in response to the operation and maintenance obligations for performance of the M7 motorway set out in the Project Deed and the Scope of Works and Technical Criteria.

Proposed works

It is proposed to mill the top layer of open grade asphalt and replace with the same specification asphalt on the M7 motorway from its southern extent near the M5 motorway (chainage -730) to crossover 5 to the north of Elizabeth Drive (chainage 12700). The proposal comprises the first stage of the resheeting of the motorway, and the second commencing 2018 and third stage commencing 2019 will be planned to complete the resheeting project over the remaining length of the motorway. This REF relates to Stage 1 and additional assessments will be undertaken for subsequent stages. A location map and plans of the proposed works are provided in Appendix A.

The pavement profile for the main carriageway of the motorway is shown in Figure 1 below. As shown in the figure, the total pavement thickness along the carriageway is approximately 440mm, with the open grade asphalt comprising the top 30mm of the profile. The proposed resurfacing works include milling this top 30mm of open grade asphalt and laying new open grade asphalt to the same specification.


PAVEMENT SURFACE DESIGN LEVEL 30mm 0610 OPEN-GRADED ASPHALTIC CONCRETE WEARING COURSE A15E BINDER (TYPICAL)

77' 7171'7- -4 20mm AC7 DENSE GRADED ASPHALTIC \CONCRETE - CLASS 320 BINDER (TYPICAL)

• . .v . PRIME IEMULSION TYPICAL) SAM1prime K2/P (OR EQUIVI

-• : v -.. V.*- 240mm 35MPa CONTINUOUSLY REINFORCED CONCRETE BASE

•. -v • •,,•, •v - Lu • - - - ' -

n_

UNDERSIDE OF PAVEMENT

150mm 5MPa LEAN MIX CONCRETE SUB-BASE

EL

EC

TE

D M

AT

ER

IAL

ZO

NL

1 ,

7mm PRIMER SEAL

150mm UPPER SELECTED MATERIAL ZONE MATERIAL CBR >10% REFER NOTES 1 AND 2

150mm LOWER SELECTED MATERIAL ZONE MATERIAL CBR >10%

SUBGRADE CBR 3% REFER NOTES 3 & 6

THROUGH CARRIAGEWAY PAVEMENT TYPICAL

(TYPE CRCP1) Figure 1 - Typical pavement profile for the main carriageway of the M7 motorway (ref: Drawing No. C001-PV-350101)

The M7 Asphalt Resheeting Works for Stage 1 will consist of the following activities:

1. Planning • All ancillary works necessary to establish the project including:

o development of project tools, plans and procedures; o market testing and appointment of various contractors; o assessment and mitigation of risks; o development of quality assurance tools and procedure aligning to the relevant

M7 Asphalt Resheeting — Stage 1 Minor Works Review of Environmental Factors

4

RMS Specifications; and o development of a Communication Strategy.

2. Pre-mobilisation • Notification to motorists of intended works through an approved Variable

Message Sign (VMS) notification strategy. • Notification to affected residents as recommended by this REF through means

determined by this REF. • Preliminary site investigation works including asphalt thickness testing, asphalt

ride quality testing and site set-out. • Application to the Traffic Management Centre (TMC) for Road Occupancy

Licence (ROL) for the motorway corridor and detour routes. • Application to local councils for detour routes.

3. Traffic Control Implementation

Detailed traffic management and traffic controls plans would be developed as part of the Construction Environment Management Plans (CEMP), following approval of the REF.

The worksite will be established by implementing traffic control to delineate the worksite from motorists, pedestrians and cyclists. Traffic control equipment will include the use of vehicles fitted with crash attenuators. The traffic control aims to safely direct road users around the worksite via contraflow, lane closures, mobile closures or detour routes. Once the closure is established, the traffic control contractor will undertake a drive through to validate that the worksite is secured and that there is a safe passage pass the worksite for road users. Each type of closure is described below:

Contra flow

During a contraflow, traffic control equipment will be used to move traffic around the worksite by diverting traffic from one side of the motorway to the opposite side at a motorway crossover, and returning the traffic to the initial carriageway at the next crossover. The carriageway open to traffic will have cones along the centreline to delineate traffic moving in opposite directions. Motorists will be advised of the changed road conditions ahead via advance VMS notifications and signage directing vehicles to merge and shift to the opposing carriageway. Cross over points will be illuminated and daymaker lighting will be established where applicable every 500m along the contraflow section, where existing motorway lighting is not sufficient to illuminate the contraflow zone.

Lane Closure

Single lane closures or partial lane closure with a lateral shift are not expected for the asphalt works but will be used for permanent line marking works. These works will consist of implementing a static traffic control arrangement whereby two lanes are merged into one lane. Alternatively, a lateral shift configuration will be used for shoulder line marking works where traffic is pushed to the edge of a lane via traffic control devices to enable sufficient work space in a shoulder.

Mobile Closure

A mobile closure will be used during traffic control setup and while applying permanent line marking on the mainline. Mobile closures will apply for works that occur for less than 20 minutes in each location. A mobile closure will use up to four truck mounted attenuators separated by a set buffer distance to provide protection to


the mobile works ahead.

Detour

A detour will be implemented when a section of the motorway is closed and there is no alternative route available by contraflow. This will apply at to work at the Sir Roden Cutler VC Memorial (M5) Interchange and when the worksite restricts access to on and off ramps. Location and duration of proposed detour routes are defined in Appendix C — Project Sequencing Plan.

A detour will use major arterial roads and will return vehicles to the motorway at the first available location past the worksite. All detours will have an approved ROL and local Council permits. Advance notification of the change of road conditions and detour ahead will be provided on the motorway, and detour direction signs located at every change of direction point along the detour route. Signs will also be put in place to indicate to heavy vehicles to limit compression braking along the detour route.

4. Asphalt Contractor Mobilisation

On notification from the M7 Traffic Control Room that the traffic control closure is in place and has been validated, the asphalt contractor will commence mobilisation from their offsite holding yard to the worksite. All heavy plant will be floated by truck into the worksite.

The asphalt contractor will establish worksite lighting and delineate the worksite within the closure.

The asphalt contractor will undertake an onsite prestart discussion to address any site-specific risks prior to commencing works.

5. Asphalt Removal

The works require removal of nominally 30 mm of asphalt. Asphalt removal will be undertaken via milling equipment using a fine drum mill. The mill will have an inbuilt load controlled automatic water spray systems for dust suppression. The mill will convey excavated material directly into awaiting trucks. It is estimated that approximately 5000 m3 of milled asphalt would be produced during the proposed works. Trucks will remove the material immediately from site.

Milling works will begin with the slow lane shoulder and slow lane for a distance that is achievable to reinstate within the approved ROL for that shift. In the following shift the works will continue in the same alignment or move to the fast lane and fast lane shoulder to complete the surface area.

6. Asphalt Replacement

Asphalt replacement commences by cleaning and drying the surface with mechanical vacuum sweepers. The surface will have a bituminous track coat primer seal applied in preparation for the asphalt. Hot asphalt would be delivered by truck and an asphalt balancing hopper would follow the paving machines in between asphalt deliveries. Approximately 30 mm of open grade asphalt will be laid via a material transfer truck and paver. The material will be rolled using a steel drum and multi roller. Temporary line marking will be applied with waterborne paint.

7. Demobilisation

The asphalt contractor will load all plant and equipment and remove from site. The


road will be check to ensure it is free from waste and acceptable for traffic. Once offsite the traffic control contractor will commence pack up of all traffic control devices and reinstate all conditions as they were prior to commencing works.

8. Permanent Linemarking and Reflective Raised Pavement Markers (RRPM)

Installation of permanent line marking and RRPMs will occur immediately after the entire asphalt works are completed for Stage 1. These works will primarily by undertaken under a mobile closure configuration. The works will consist of a painting spraying vehicle, hot bitumen vehicle for gluing down RRPMs, a support vehicle and the required traffic control vehicles. There will be a speed reduction in place around the work area and merge.

Plant and equipment

Plant and equipment are likely to include the following:

- Fine drum mill Air compressors and pneumatic jack hammers. Material transfer vehicle Sweepers/vacuum trucks

- Emulsion sprayer trucks. - Paver - Asphalt balancing hopper - Smooth drum and multi rollers

Line marking trucks Asphalt trucks

- Dump trucks Lighting towers Passenger work vehicles Support service vehicles

Objectives of works:

The objective of these works is to replace asphalt that has reached end of design life so that the motorway surface can continue to operate in accordance to its design specification. By undertaking these works there will be an improvement to skid resistance, flow of water off the asphalt surface during rain events, improvements made to ride quality and improved visibility of line marking.

Ancillary facilities:

No ancillary facilities are proposed for the project.

Will the proposed works require the use or installation of a compound site?

Plant and equipment would be brought to site during each shift. An existing offsite contractor compound will be used for the storage of vehicles, plant and equipment between shifts.

r yes P No

Will the proposed works require the use or installation of a stockpile site?

Material is to be removed from site before the end of each shift.

r— . Yes .17 No

Are any other ancillary facilities required (eg temporary plants, parking areas, access tracks)?

r-- I Yes P No


Plant and equipment would be brought to site during each shift and will be accommodated in the work area.

Construction hours

Due to the high vehicle numbers that use the motorway, the works would be carried out as out of hours work. Subject to Traffic Management Centre approval, construction hours are likely to be 8pm to 5am Saturday to Thursday. Traffic Control to establish the worksite will take approximately one hour to set up and pack up leaving the work window for the Asphalt works between 9pm and 4am.

Proposed date of commencement:

Works to commence onsite from the 15th of January 2017

Estimated length of construction period:

Works are forecast to be completed by 30th of March 2017. Works are expected to take approximately 60 shifts.

2.2 Need and options

Options considered:

The options considered for the proposed works were:

• Option 1 - Extend the service life of the asphalt

This do-nothing approach would not eliminate the need to undertake the works but it would delay the works to a future year. To undertake this option the asset would need to be assessed for its current operating condition to determine if it still satisfies design intent and that the risk of not undertaking the works vs undertaking the works has on road users and adjacent residents.

• Option 2 - Replace the asphalt over the length of the motorway (preferred option)

This option aligns with the design life and major capital upgrade program for the motorway. This option is supported by recommendation and general deterioration trending observed from roughness and ride quality yearly assessments.

The intent of this option is to undertake the works in a staged approach across three years beginning in the south were the deterioration is the worst. Staging the works enable best results as the works can be completed during the warmer months of the year.

Justification for the proposed works.

The M7 Motorway undergoes roughness and ride quality testing every year. The recommendation from this testing is that the asphalt is approaching end of life and that delaying the resheeting program will result in:

- Increased traffic noise - Decline in ride quality - Increase in ravelling which can result in damage to vehicles - Decrease in ability for open grade asphalt to disperse water due to blocked pores,

and - Potential to cause damage to dense grade asphalt that lines beneath the open grade

asphalt which will lead to delamination, oxidisation and uneven wear.


Based on these concerns it has been determined that the open grade asphalt layer is at end of life and that replacement of the layer is required.

2.3 Statutory and planning framework

State Environmental Planning Policy (Infrastructure) 2007 (ISEPP)

ISEPP aims to facilitate the effective delivery of infrastructure across the state, including for roads and road infrastructure facilities. Clause 94 of the ISEPP permits development on any land for the purpose of a road or road infrastructure facilities to be carried out by or on behalf of a public authority without consent.

As the proposed works are appropriately characterised as development for the purposes of a road or road infrastructure facilities, and is to be carried out by or on behalf of Roads and Maritime Services, it can be assessed under Part 5 of the EP&A Act. Development consent from council is not required.

The proposal is not located on land reserved under the National Parks and Wildlife Act 1974 and does not affect land or development regulated by State Environmental Planning Policy No. 14 - Coastal Wetlands, State Environmental Planning Policy No. 26 - Littoral Rainforests or State Environmental Planning Policy (Major Projects) 2005.

Other relevant legislation and environmental planning instruments:

Protection of the Environment Operations Act 1997

The Protection of the Environment Operations Act (1997) sets out environmental protection offences and penalties for air, water, land and noise pollution, including for wilful or negligent disposal of waste causing or likely to cause harm to the environment (section 115), and wilfully or negligently causing a substance to leak, spill or otherwise escape in a manner that harms or is likely to harm the environment. The Act also includes the duty to notify of pollution incidents where material harm to the environment is caused or threatened.

2.4 Community and agency consultation

ISEPP consultation:

Part 2 of the ISEPP contains provisions for public authorities to consult with local councils and other public authorities prior to the commencement of certain types of development. This is detailed below:

Is consultation with council required under clauses 13-15 of the Infrastructure SEPP?

Are the works likely to have a substantial impact on the stormwater management services which are provided by council?

r- I Yes NoNo

Are the works likely to generate traffic to an extent that will strain the existing road system in a local government area?

r- ; Yes 1 7 No

Will the works involve connection to a council owned sewerage system? If so, will this connection have a substantial impact on the capacity of the system?

1- , Yes 17 No

Will the works involve connection to a council owned water supply system? If so, will this require the use of a substantial

I-- I Yes 1 7 No

M7 Asphalt Resheeting — Stage 1 Minor Works Review of Environmental Factors

volume of water?

Will the works involve the installation of a temporary structure on, or the enclosing of, a public place which is under local council management or control? If so, will this cause more than a minor or inconsequential disruption to pedestrian or vehicular flow?

r-• I Yes ri No

Will the works involve more than a minor or inconsequential excavation of a road or adjacent footpath for which council is the roads authority and responsible for maintenance?

r yes P No

Are the works located on flood liable land? If so, will the works change flooding patterns to more than a minor extent?

r yes P No

Is there a local heritage item (that is not also a state heritage item) or a heritage conservation area in the study area for the works? If yes, does a heritage assessment indicate that the potential impacts to the item/area are more than minor or inconsequential? There are no heritage items within the motorway carriageway and there would therefore be no potential for impact to a heritage item or conservation area from the proposed asphalt resheeting works.

r- I Yes P. No

Is consultation with other agencies required under clause 16 of the Infrastructure SEPP?

Are the works adjacent to a national park, nature reserve or other area reserved under the National Parks and Wildlife Act 1974?

r yes P No

Are the works adjacent to a declared aquatic reserve under the Fisheries Management Act 1994?

r yes P No

Are the works adjacent to a declared marine park under the Marine Parks Act 1997?

r yes P No

Are the works in the Sydney Harbour Foreshore Area as defined by the Sydney Harbour Foreshore Authority Act 1998?

r yes P No

Do the works involve the installation of a fixed or floating structure in or over navigable waters?

r ; Yes P No

Are the works for the purpose of residential development, an educational establishment, a health services facility, a correctional facility or group home in bush fire prone land?

r- ; Yes P No

While the Infrastructure SEPP has not identified a need to consult with council, out of due diligence Liverpool and Fairfield Councils have been contacted, provided information about the proposed work and given opportunity to comment on the intended works. Comments received from these councils have confirmed that there is no objection from either council to the work going ahead as planned, subject to consultation with potentially affected residents.

Other agency and community consultation:

Community consultation has not yet been carried out for the project. A communication plan is being developed which will undergo an approval process through Road and Maritime Services prior to implementation. This will include details of letterbox drops, the VMS campaign, notification on the M7 website and media releases.


Consultation with the Traffic Management Centre, local council and other key stakeholders will continue for the project and will be detailed in the communication plan to be reviewed by Road and Maritime Services.


3 Environmental assessment This section provides a detailed description of the potential environmental impacts associated with the proposed works. All aspects of the environmental potentially impacted upon by the proposal are considered. This includes consideration of the factors specified in the guidelines Is an EIS required? (DUAP 1999) and Roads and Related Facilities (DUAP 1996). The factors specified in clause 228(2) of the Environmental Planning and Assessment Regulation 2000 and the matters of national environmental significance under the Federal Environment Protection and Biodiversity Conservation Act 1995 are also considered in section 5. Site-specific safeguards are provided to ameliorate the identified potential impacts.

3.1 Soil

Description of existing environment and potential impacts:

The top 30 mm of asphalt will be milled on pavement with a profile depth of approximately 400 mm. There will be no disturbance of soil during the proposed asphalt resheeting works. Access to and from the site will be via existing paved roads.

Are there any known occurrences of salinity or acid sulfate soils in the area?

r yes 17 No

Does the project involve the disturbance of large areas (e.g. >2ha) for earthworks?

r 1 Yes P No

Does the site have constraints for erosion and sedimentation controls such as steep gradients or narrow corridors?

r yes iii No

Are there any sensitive receiving environments that are located in or nearby the likely project footprint or that would likely receive stormwater discharge from the project?

Sensitive receiving environments near the project that receive stormwater from the footprint of the proposed works include:

- Ropes Creek

- Hinchinbrook Creek

- Cabramatta Creek

- Maxwell's Creek

The project will not include disturbance of soil. Potential water quality issues from materials other than soil are discussed in Section 3.2 below.

1.7 yes r No

Is there any evidence within or nearby the likely footprint of potential contamination?

r I Yes .17 No

Is the likely project footprint in or nearby a highly sloping landform?

The existing embankments to the side of the roadway along the length of the proposed works will not be disturbed by the asphalt resheeting works. The embankments are stabilised with vegetative cover and a stormwater drainage system including drains and basins prevents water from the road reaching the embankments, and water from the embankments from reaching the road.

r I Yes F No

Are the works likely to result in more than 2.5ha (area) of exposed soil?

r- 1 Yes F No


3.2 Waterways and water quality


The proposed asphalt resheeting works will be on an existing motorway which diverts water from the road to stormwater basins prior to leaving the site. Additional source controls will be implemented to prevent any spill from leaving the work site including sweeping of loose materials from paved surfaces and minimising the quantity of hazardous materials onsite. Inlet filters are to be emplaced at drainage pits where there is a risk of material entering the drain during a rain event. In the event of any spill the affected basin can be isolated by closing a valve, enabling the spill to be contained and managed until clean-up is complete.

Are the works located within,

The proposed works include that cross waterways. All water stormwater basins.

Any loose materials on paved removed as required and at material from reaching drainage works are unlikely to go ahead.

In the case of a rain event occurring drainage pits are to be protected as a mesh and gravel inlet filter) the drain. The inlet filter will be the functioning of the drain, and move from the site.

A typical location of the motorway shown below. For Stage 1 (the nine locations similar to this.

,

adjacent to or near a waterway?

milling and asphalt works on bridges runoff from bridges is directed to

surfaces are to be swept and the end of each shift to prevent

pits. Where rain is predicted,

while works are underway, by emplacing in inlet filter (such

to prevent material from entering placed so that it does not prevent

allows the filtered stormwater to

passing over a water way is scope of this MWREF) there are

1.7 Yes r No

Is the location known to flood or be prone to water logging? r Yes 1.7 No

Are the proposed works located within or immediately adjacent to the area managed by Sydney Catchment Authority covered by State Environmental Planning Policy (Sydney Drinking Water Catchment) 2011?

r yes 17 No


Will the proposed works be undertaken on a bridge or ferry?

The proposed works include milling and asphalt works on bridges that cross waterways.

IV Yes r No

Are the works likely to require the extraction of water from a local water course (not mains)?

r- I Yes 17 No

Safeguards

Safeguards to be implemented are:

1. There is to be no release of dirty water into drainage lines and/or waterways.

2. Any material transported onto pavement surfaces would be swept and removed as required and at the end of each shift.

3. In the case of a rain event occurring while works are underway and there is a risk of material entering a drain, drainage pits are to be protected by placing an inlet filter at the pit to prevent material from entering the drain.

4. All fuels, chemicals and liquids are to be stored in an impervious bunded area a minimum of 50 metres away from creeks, waterways or any areas of concentrated water flow and slopes above 10%.

5. Vehicle fuelling will be undertaken prior to accessing site to minimise any fuelling requirements onsite. Refuelling of plant and equipment is to occur in impervious bunded areas located a minimum of 50 metres from drainage lines or waterways.

6. Cleaning of spray bars will be undertaken offsite at a cleaning facility in the contractor's depot.

7. Cleaning of the Paver and Material Transfer Vehicle (or equivalent equipment which is remaining onsite or at marshalling area) is to occur in a designated clean out area that is not near any drains or water catchment area.

This area will be constructed by laying of a heavy-duty tarpaulin with 30mm of sand on top of the tarpaulin. On top of the sand there will be 30-50mm of Profiling's/Aggregate to give a sound base for the paver and shuttle Buggy to park. A bund is then created under the edge of the tarpaulin using Profiling's/Aggregate.

A cleaning fluid, that is vegetable oil based, is sprayed on the plant/equipment and left until next shift. The cleaning fluid causes the asphalt to dis-bond from the plant /equipment and fall into the bunded area as a non-viscose mass. This product is removed offsite once sufficient volume is formed.

The designated clean out area is removed and the site is restored on completion of works.

8. An emergency spill kit is to be kept on site at all times. All staff are to be made aware of the location of the spill kit and trained in its use.

9. If an incident (e.g. spill) occurs, the Roads and Maritime Services Environmental Incident Classification and Reporting Procedure is to be followed and the Roads and Maritime Services Contract Manager notified as soon as practicable.

3.3 Noise and vibration



Are there any residential properties or other noise sensitive areas near the location of the proposed works that may be affected by the works (i.e. church, school, hospital):

During construction?

Construction noise

A noise impact assessment in provided in Appendix B. The assessment shows the extent of potential noise impacts to nearby properties. The proposed works are mobile and will move progressively along the motorway, affecting receivers as peak events.

Management measures will include notification of nearby properties by letter, a VMS campaign, notification on the M7 website and a media release.

Night time construction noise in out of hours period 2 shall be limited to two consecutive nights. These periods of work will be separated by not less than one week, and add to a total of 6 nights per month. Where possible, high noise generating works shall be completed before 11pm.

Traffic noise

Anticipated construction traffic volumes would include machinery floated in and out of the work site for each work period, delivery trucks for asphalt supply, and disposal trucks. Construction vehicle traffic will be scheduled and routed to minimise noise impacts. Vehicles will be required to be adequately silenced before allowed access to the site.

Traffic diversions are proposed for motorway traffic when the resheeting works are being carried out in sections of road requiring a full road closure, or when access to an on or off ramp would be affected by contraflow conditions.

Traffic noise impacts from temporary reroutes for closures have been considered in the noise impact assessment in provided in Appendix B. The estimated change in noise levels is 2.6 dB(A) for northbound diversions and 2.5 dB(A) for southbound diversions.

To mitigate the estimated change in noise levels, the use of engine compression braking for construction vehicles and for heavy vehicle traffic travelling along the detour routes is to be discouraged. It is recommended that temporary signage is installed to discourage the use of engine compression braking along the detour routes.

,17 Yes r No

During operation? E Yes 17 No

Are the proposed works going to be undertaken only during standard working hours?

The proposed works are to be carried out at night to minimise the impact to traffic flow on the motorway by avoiding peak traffic conditions which would generate traffic impacts, and in consideration of worker safety.

-r— r Yes 17 No


Night time construction noise shall be limited to two consecutive nights. These periods of work will be separated by not less than one week, and add to a total of 6 nights per month. Where possible, high noise generating works shall be completed before 11pm.

Is any explosive blasting required for the proposed works? r Yes P No

Will operation of the works alter the noise environment for sensitive receivers? This might include, but not be limited to, altering the line or level of an existing carriageway, changing traffic flow, increasing traffic speeds by more than 10km/hr or installing audio-tactile line markings.

r— yes P No

Will the works result in vibration being experienced by any surrounding properties or infrastructure (during either construction or operation)?

No, the works are not likely to result in vibration being experienced by surrounding properties or infrastructure. The asphalt resheeting will comprise removal and replacement of the open grade asphalt at the top of the pavement profile.

Table 2 of the RMS Construction Noise and Vibration Guideline (2016) provides recommended minimum working distances for vibration intensive plant from sensitive receivers. Jackhammers and steel drum rollers will be working at a distance greater than the 2m minimum working distance recommended in Table 2 of the Guideline.

The proposed work activities are not predicted to exceed the cosmetic damage or human response objectives according to the values presented in Table 2 of the RMS Construction Noise and Vibration Guideline (2016).

r I Yes P No

Safeguards


10. Implement notification measures including:

Notification of residents by letter detailing work activities, dates and hours, impacts and mitigation measures, indication of work schedule over the night time period, any operational noise benefits from the works (where applicable) and contact telephone number. Notification should be a minimum of 7 calendar days prior to the start of works.

Specific notification within a 180m radius from the proposed works where there is line of sight, and a 70m radius where there is no line of sight, and for all of the rural residences to the north of Elizabeth Drive. They are to be delivered by letterbox drop to identified stakeholders no later than seven calendar days ahead of nearby construction activities. The specific notification will provide additional relevant information to more highly affected receivers than covered in general letterbox drops, including a recommendation that residents keep windows closed overnight

VMS campaign

Notification on the M7 website


- Media release

11. Night time construction noise impact on individual residents shall be limited to two consecutive nights. These periods of work will be separated by not less than one week, and add to a total of 6 nights per month. Where possible, high noise generating works shall be completed before 11pm.

12. Environmental site induction for all employees, contractors and subcontractors which must include:

- all project specific and relevant standard noise and vibration mitigation measures

relevant licence and approval conditions

- permissible hours of work

any limitations on high noise generating activities

- location of nearest sensitive receivers

construction employee parking areas

designated loading/unloading areas and procedures

site opening/closing times (including deliveries)

environmental incident procedures

13. Behavioural practices including:

No swearing or unnecessary shouting or loud stereos/radios on site.

No dropping of materials from height, throwing of metal items and slamming of doors.

14. Update Construction Environmental Management Plans if required to account for changes in noise and vibration management issues and strategies.

15. Work generating high noise and/or vibration levels will be scheduled during less sensitive time periods.

16. Use quieter and less vibration emitting construction methods where feasible and reasonable. Ensure plant including silencers are well maintained.

17. The noise levels of plant and equipment must have operating Sound Power or Sound Pressure Levels compliant with the criteria in Roads and Maritime Services Construction Noise and Vibration Guideline 2016 (see Table 1 below).

Table 'l Plant and equipment sound power levels

Activity Description of Activity Plant/ Equipment LA" SWL LAe, at 7m

Re-surfacing

works

Milling the asphalt to

expose the underlying

concrete, then laying new

asphalt

Daymakers 98 73

Pavement profiler 117 92

Dump truck 110 85

Front end loader 112 87

Pavement laying machine 114 89

Asphalt truck & sprayer 106 81

Smooth drum roller 107 82

18. The offset distance between noisy plant and adjacent sensitive receivers is to be maximised. Plant used intermittently are to be throttled down or shut down. Only have the necessary plant and equipment on site.

19. Plan worksites and activities to minimise noise and vibration including the following:


- Locate compounds away from sensitive receivers and discourage access from local roads.

- Plan traffic flow, parking and loading/unloading areas to minimise reversing movements within the site.

- Where additional activities or plant may only result in a marginal noise increase and speed up works, consider limiting duration of impact by concentrating noisy activities at one location and move to another as quickly as possible.

- Very noisy activities should be scheduled to be completed before 11:00pm.

20. Use only the minimum necessary size and power plant and equipment required for the work.

21. Non-tonal reversing beepers (or an equivalent mechanism) must be fitted and used on all construction vehicles and mobile plant regularly used on site and for any out of hours work. Consider the use of ambient sensitive alarms that adjust output relative to the ambient noise level.

22. Minimise disturbance arising from delivery of goods to construction sites including:

Loading and unloading of materials/deliveries is to occur as far as possible from sensitive receivers.

- Select site access points as far as possible away from sensitive receivers.

Dedicated loading/unloading areas to be shielded if close to sensitive receivers.

- Delivery vehicles to be fitted with straps rather than chains for unloading, wherever possible.

23. Construction vehicle traffic will be scheduled and routed to minimise noise impacts. Construction vehicles are to limit the use of engine compression brakes at night and in residential areas. Ensure vehicles are fitted with a maintained Original Equipment Manufacturer exhaust silencer or a silencer that complies with the National Transport Commission's 'In-service test procedure' and standard.

24. Temporary signage is to be installed to discourage the use of engine compression braking along detour routes.

3.4 Air quality


Are the proposed works likely to result in large areas (>2ha) of exposed soils?

r yes .17 No

Will there be any dust sensitive receivers located within the vicinity of the proposed works during the construction period?

r yes P No

Is there likely to be an emission to air during construction? 1.7 Yes r No

Emissions from works will be confined to plant emissions and temporary odour generated during the application of asphalt and line marking. The plant required to undertake the works include:

- Fine drum mill - Air compressors and pneumatic jack hammers. - Material transfer vehicle - Sweepers/vacuum trucks - Emulsion sprayer trucks. - Paver - Asphalt balancing hopper


- Smooth drum and multi rollers - Line marking trucks - Asphalt trucks - Dump trucks - Lighting towers - Passenger work vehicles - Support service vehicles

The asphalt mill will have an inbuilt load controlled automatic water spray systems for dust suppression.

Potential impacts from vehicle emissions, dust and odour would be minimal due to the short duration of these works and containment of these works within the roadway.

Safeguards


25. Works (including the spraying of paint and other materials) are not to be carried out during strong winds or in weather conditions where high levels of dust or air borne particulates are likely.

26. Vehicles transporting waste or other materials that may produce odours or dust are to be covered during transportation.

27. A mill with an inbuilt load controlled automatic water spray systems for dust suppression is to be used.

3.5 Non-Aboriginal Heritage


Have online heritage database searches been completed?

• RTA section 170 register

• NSW Heritage database

• Commonwealth EPBC heritage list

• Australian Heritage Places Inventory

• Local Environmental Plan(s) heritage items

Yes, the heritage searches have been completed for areas that will intersect the proposed re-sheeting works, see Appendix D.

.1-7 Yes r No

Are there any items of non-Aboriginal heritage or heritage conservation areas located within the vicinity of the proposed works?

1-- I Yes F No

The footprint of the proposed maintenance works will be within the motorway construction footprint. Only one site was found within proximity of the works (Sydney Water Supply Upper . Canal). This item is a system of tunnels, aqueducts and open canals collectively known as the Upper Canal, which enabled water diverted through the Nepean Tunnel to flow a distance of 64 kilometres to the major distribution reservoir at Prospect. The tunnel passes under the motorway near Elizabeth Drive, and is


unlikely to be impacted by the replacement of the top 30mm of asphalt during the resheeting works.

Are there any items of potential non-Aboriginal heritage significance within the vicinity of the works

No, there are no items of potential non-Aboriginal heritage significance within the vicinity of the works.

r yes P No

Are works likely to occur in or near features that indicate potential archaeological remains?

The works are not likely to occur in or near features that indicate potential archaeological remains. The works are being conducted in previously disturbed zones and will only impact 30 mm of existing pavement, see Figure 1 in Section 2.1.

r— ; Yes P No

Safeguards


28. If unexpected archaeological remains are uncovered during the works, all works must cease in the vicinity of the material/find and the steps in the Roads and Maritime Services Standard Management Procedure: Unexpected Heritage Items must be followed. Roads and Maritime Services Senior Environment Specialist - Heritage must be contacted immediately.

29. If any items defined as relics under the NSW Heritage Act 1977 are uncovered during the works, all works must cease in the vicinity of the find and the Roads and Maritime Services Senior Environment Specialist - Heritage contacted immediately.

3.6 Aboriginal Heritage


Would the works involve disturbance in any area that has not been subject to previous ground disturbances?

No. All works are being done in previously disturbed zones. Only 30 mm of top existing pavement will be impacted, see Figure 1 in Section 2.1 above. Vehicles will be stored and parked on paved areas.

r yes P No

Have online AHI MS search been completed? r Yes P No

No, an AHIMS search has not been completed. The proposed works are considered exempt development. The RTA Procedure for Aboriginal Cultural Heritage Consultation and Investigation (2011) has been followed, and indicates that no further consultation is required.

Is there potential for the proposed works to impact on any items of Aboriginal heritage?

; Yes P No

No, there is no chance of adversely impacting items of Aboriginal Heritage during the proposed works. The works will be conducted in previously disturbed zones of the motorway with only 30 mm of existing pavement being impacted, see Figure 1.


Would the works involve the removal of mature native trees?

No, the works will not involve the removal of mature native trees. The works are being conducted in previously disturbed zones.

r Yes 417 No

Would the works impact on any features that may indicate any potential archaeological remains?

No, the works would not impact on any features that would indicate any potential archaeological remains. The works are being conducted in previously disturbed zones.

r- yes P" No

Are the works consistent with the requirements of the RTA r V Yes Ir No Procedure for Aboriginal Cultural Heritage Consultation and Investigation?

Yes. The RTA Procedure for Aboriginal Cultural Heritage Consultation and Investigation (2011) has been followed, and indicates that no further consultation is required.

Safeguards


30. If Aboriginal heritage items are uncovered during the works, all works in the vicinity of the find must cease and the Roads and Maritime Services Aboriginal cultural heritage officer and regional environment manager contacted immediately. Steps in the Roads and Maritime Services Standard Management Procedure: Unexpected Heritage Items, must be followed.

3.7 Biodiversity


Have relevant database searches been carried out?

As the proposed works are confined to the motorway pavement, the works are unlikely to adversely impact flora or fauna, therefore the biodiversity database searches have not been carried out.

r Yes I 7 No

Did the database searches identify any endangered ecological communities, populations, threatened flora and/or threatened or protected fauna, or migratory species within the vicinity of the proposed works? Both Federal and State listed matters must be considered.

r yes 17 No

Will the proposed works impact nationally listed threatened species, ecological communities or migratory species?

r yes 15.7 No

Will the proposed works require the removal of any other vegetation?

r yes .17 No

Will the proposed works affect any tree hollows or hollow logs? E Yes Fr No


Are there any known areas of critical habitat, SEPP 14 wetland area or SEPP 26 littoral rainforest area within the vicinity of the proposed works?

r yes F No

Will the proposed works provide any additional barriers to the movement of wildlife?

r • Yes F No

Will the proposed works disturb any natural waterways or aquatic habitat?

r yes P No

Will the proposed works disturb any crevices or other locations (such as on bridges and culverts) for potential bat habitat?

r P Yes P No

Will there be impact on any vegetation or land that is part of an offset or is protected under a condition of approval from a previous project?

r- • Yes P No

3.8 Trees


Do the proposed works involve pruning, trimming or removal of any tree/s?

r yes F No

Do the trees form part of a streetscape, an avenue or roadside planting?

r P Yes F No

Have the trees been planted by a community group, landcare group or by council or is the tree a memorial or part of a memorial group e.g. has a plaque?

r yes Fi No

Do the trees form part of a heritage listing or have other heritage value?

r yes P No

3.9 Traffic and transport


Are the proposed works likely to result in detours or disruptions to traffic flow (vehicular, cycle and pedestrian) or access during construction?

r v Yes r No

During works, traffic will be managed in accordance to a Traffic Management Plan to be prepared for the works prior to commencement.

The worksite will be established by implementing traffic control to delineate the worksite from motorists, pedestrians and cyclists. Traffic control equipment will include the use of vehicles fitted with crash attenuators. The traffic control aims to safely direct road users around the worksite via contraflow, lane closures, mobile closures or detour routes. Once any closure is established, the traffic control contractor will undertake a drive through to validate that the worksite is secured and that there is a safe passage pass the worksite for road users.


Each type of closure is described below:

Contra flow

During a contraflow, traffic control equipment will be used to move traffic around the worksite by diverting traffic from one side of the motorway to the opposite side at a motorway crossover, and returning the traffic to the initial carriageway at the next crossover. The carriageway open to traffic will have cones along the centreline to delineate traffic moving in opposite directions. Motorists will be advised of the changed road conditions ahead via advance VMS notifications and signage directing vehicles to merge and shift to the opposing carriageway.

Lane Closure

Single lane closures or partial lane closure with a lateral shift are not expected for the asphalt works but will be used for permanent line marking works. These works will consist of implementing a static traffic control arrangement whereby two lanes are merged into one lane. Alternatively, a lateral shift configuration will be used for shoulder line marking works where traffic is pushed to the edge of a lane via traffic control devices to enable sufficient work space in a shoulder.

Mobile Closure

A mobile closure will be used during traffic control setup and while applying permanent line marking on the mainline. Mobile closures will apply for works that occur for less than 20 minutes in each location. A mobile closure will use up to four truck mounted attenuators separated by a set buffer distance to provide protection to the mobile works ahead.

Detour

A detour will be implemented when a section of the motorway is closed and there is no alternative route available by contraflow. This will apply at to work at the Sir Roden Cutler VC Memorial (M5) Interchange and at other locations when the worksite and contraflow location restricts access to on and off ramps.

A detour will use major arterial roads and will return vehicles to the motorway at the first available location past the worksite. All detours will have an approved ROL and local Council permits. Councils consultation has confirmed that there will be no objection to the proposed detour routes. Advance notification of the change of road conditions and detour ahead will be provided on the motorway, and detour direction signs located at every change of direction point along the detour route. Signs will also be put in place to indicate to heavy vehicles to limit compression braking along the detour route.

The proposed detour routes have been applied previously when performing maintenance and incident response activities on the motorway. The routes have been assessed by TMC and have been deemed suitable to carry the predicted volume and type of


traffic. The routes are shown in Appendix C - Project Sequencing Plan.

Are the proposed works likely to result in detours or disruptions to traffic flow (vehicular, cycle and pedestrian) or access during operation?

r- i Yes P No

Are the proposed works likely to affect any other transport nodes or transport infrastructure (e.g. bus stops, bus routes) in the surrounding area, or result in detours or disruptions to traffic flow (vehicular, cycle and pedestrian) or access during operation?

n yes P No

Safeguards


31. Any disturbance to traffic movements is to be minimised to prevent unnecessary traffic delays.

32. If passing the worksite is deemed unsafe to pedestrians or cyclists then they will be redirected to the M7 Shared Path which parallels the Motorway.

33. VMS's will be used to inform motorists of the detours ahead and possible delays.

34. A VMS campaign will run prior to the works to inform motorists of the upcoming works.

35. Oversize vehicle movements will be restricted when detours are in place. RMS Heavy Vehicle Unit and RMS Live Traffic will be informed of any detours in place that may prevent oversize vehicle movement to allow consideration when issuing permits.

36. The trucking association, National Road Transport Association and Road Freight NSW, will be advised of the intended works and detour routes.

37. All changes to traffic conditions will be sign posted and illuminated

3.10 Socio-economic


Are the proposed works likely to impact on local business?

Access to local businesses would be maintained throughout the construction period. Local businesses that use the motorway for out of hours transport will be able to use temporary detours.

r Yes P No

Are the proposed works likely to require any property acquisition?

r I Yes P No

Are the proposed works likely to alter any access for properties (either temporarily or permanently)?

r- yes P No

Are the proposed works likely to alter any on-street parking arrangements (either temporarily or permanently)?

r- I Yes P No

Are the proposed works likely to change pedestrian movements or pedestrian access (either temporarily or permanently)?

r- I Yes P No


Are the proposed works likely to impact on any items or places of social value to the community (either temporarily or permanently)?

r yes .17 No

Are the proposed works likely to reduce or change visibility of any businesses, farms, tourist attractions or the like (either temporarily or permanently)?

r yes 17 No

Safeguards


38. Existing access for nearby and adjoining properties is to be maintained at all times during the works unless otherwise agreed to by the affected property owner.

39. Community consultation is to be undertaken in accordance with the Community Involvement Practice Notes and Resource Manual.

40. Complaints received are to be recorded and attended to promptly in accordance with the Community Involvement Practice Notes and Resource Manual.

3.11 Landscape character and visual amenity

Description of existing environment and potential impacts: The proposed works comprise removal and replacement of the existing asphalt surface, which will result in no change to the current visual landscape character or visual amenity.

Are the proposed works over or near an important physical or cultural element or landscape? (heritage items and areas, distinctive or historic built form, National Parks, conservation areas, scenic highways etc)?

r yes 1.7 No

Would the proposed works obstruct or intrude upon the character or views of a valued landscape or urban area. For example locally significant topography, a rural landscape or a park, a river, lake or the ocean or a historic or distinctive townscape or landmark?

r yes 17 No

Would the proposal require the removal of mature trees or stands of vegetation, either native or introduced?

r-- ; Yes %I-7 No

Would the proposal result in large areas of shotcrete visible from the road or adjacent properties?

r 1 Yes .17 No

Would the proposal involve new noise walls or visible changes to existing noise walls?

r--- 1 Yes ro No

Would the proposal involve the removal or reuse of large areas of road corridor, landscape, either verges or medians?

r yes 17 No

Would the proposal involve substantial changes to the appearance of a bridge (including piers, girders, abutments and parapets) that are visible from the road or residential areas?

r yes 17 No


If involving lighting, would the proposal create unwanted light spillage on residential properties at night (in construction or operation)?

F. yes I— No

Noise walls, vegetation screening and earth mounds provide a visual barrier for nearby residents along most of the motorway. Some residents with line of sight to the motorway may be able to see the contractors undertaking the works. As a result, they may observe the safety/warning lighting on the vehicles and worksite lighting. Worksite lighting will be directed at the ground which will prevent direct light spill into resident's properties. Since the proposed works are mobile, any impact would be temporary.

.

Would any new structures or features being constructed result in over shadowing to adjoining properties or areas?

r— I Yes 17 No

Safeguards


41. Light towers to be positioned and operated to minimise light spillage on residential properties during construction works.

3.12 Waste


Are the proposed works likely to generate >200 tonnes of waste material (contaminated and /or non-contaminated material)?

E.7 Yes r No

It is estimated that approximately 5000 m3 of milled asphalt would be produced during the proposed works. This material will be removed directly from site and transported in covered trucks to an asphalt plant for recycling.

Are the proposed works likely to require a licence from OEH? r Yes P No

A licence is required for scheduled activities. Schedule 1 of the Protection of the Environment Operations Act 1997 Clause 35(1) states that road maintenance is not a scheduled activity.

Safeguards


42. Resource management hierarchy principles are to be followed:

• Avoid unnecessary resource consumption as a priority

• Avoidance is followed by resource recovery (including reuse of materials, reprocessing, recycling and energy recovery)

• Disposal is undertaken as a last resort

(in accordance with the Waste Avoidance & Resource Recovery Act 2001).


43. A waste management plan would be prepared as part of the construction environmental management plan and implemented during construction.

44. Waste material is not to be left on site once the works have been completed.

45. Working areas are to be maintained, kept free of rubbish and cleaned up at the end of each working day.

4 Consideration of State and Commonwealth environmental factors

4.1 Environmental Planning and Assessment Regulation 2000 checklist

In addition to the requirements of the Is an EIS required? guideline as detailed in the REF, the following factors listed in clause 228(2) of the Environmental Planning and Assessment Regulation, 2000 have also been considered to assess the likely impacts of the proposal on the natural and built environment. This consideration is required to comply with sections 111 and 112 of the Environmental Planning and Assessment Act 1979.

Environmental Factor

(a) Any environmental impact on a community?

The proposed works may cause minor short-term environmental impacts on the community, such as delays to traffic and noise impacts on residents at night, however the potential impacts would be minimised with the implementation of the safeguards as detailed in this REF. The maintenance works would have no environmental impact on a community in the long-term and road users would benefit from safer travelling conditions on the new pavement surface,

Impacts

Short term negative impacts locally for noise impacts, and regionally for traffic impacts. Long term positive impacts from safer travelling conditions

(b) Any transformation of a locality?

The proposed works would not transform the locality, as works would be contained within the existing road formation and be carried out on existing Roads and Maritime Services assets.

No impact

(c) Any environmental impact on the ecosystems of a locality?

The proposed works would have no potential environmental impacts on the ecosystems of a locality.

No impact

(d) Any reduction of the aesthetic, recreational, scientific or other environmental quality or value of a locality?

The proposed works would not affect the aesthetic, recreational, scientific or other environmental quality or value of the locality, as works are replacing an existing pavement like for like, and would be contained within the existing road formation.

No impact

(e) Any effect on a locality, place or building having aesthetic, anthropological, archaeological, architectural, cultural, historical, scientific or social significance or other special value for present generations?

The proposed works would have no effect on a locality, place or building of significance or other special value for present or future generations. In case of unexpected finds, the RMS heritage procedures would be followed as described in the

No impact


safeguards in Sections 3.5 and 3.6.

(f) Any impact on habitat of any protected fauna (within the meaning of the National Parks and Wildlife Act 1974)?

The proposed works would not have any impact on the habitat of any protected or endangered fauna due to the limited scope of works for the proposed activities contained within the existing road formation.

No impact

(g) Any endangering of any species of animal, plant or other form of life, whether living on land, in water or in the air?

The proposed works would not endanger any species of animal, plant or other form of life, whether living on land, in water or in the air due to the limited scope of works for the proposed activities contained within the existing road formation.

No impact

(h) Any long-term effects on the environment?

There are no anticipated negative long-term effects on the environment from the maintenance works due to the limited scope of these works and the implementation of the safeguards given in Section 3 of this REF.

Positive long term local and regional impact

(i) Any degradation of the quality of the environment?

The proposed works are unlikely to degrade the quality of the environment, and any potential impacts would be minimised with the implementation of the safeguards given in Section 3 of this REF.

Neutral impact

(j) Any risk to the safety of the environment?

The proposed works would have minimal risk to the safety of the environment due to the limited scope of works for the maintenance activities covered in this REF, and the potential impacts would be minimised with the implementation of the safeguards given in Section 3 in this REF.

Short term negative impact

(k) Any reduction in the range of beneficial uses of the environment?

The proposed works would cause a minor reduction in the use of the road from lane closures, detours and contraflow traffic which would potentially increase travelling time for road users in the short-term. There would be no long-term reduction in the range of beneficial uses of the environment as a result of the maintenance works.


(I) Any pollution of the environment?

The proposal may result in short term dust, odour and light spill impacts. These impacts are expected to be minor in nature, as the resurfacing works would be short term. The works will not involve any exposure of soil. Waste materials are to be removed from site by the end of each shift.

A construction noise and vibration assessment has predicted increases in noise that would exceed noise management levels, and reasonable and feasible mitigation measures have been recommended.

Any potential impacts would be minimised with the



Factor Impact

a. Any impact on a World Heritage property? Nil

b. Any impact on a National Heritage place? Nil

implementation of the safeguards given in Section 3 of this REF.

(m) Any environmental problems associated with the disposal of waste?

General waste generated during the proposed works would be contained and removed for disposal or reuse in accordance with the safeguards in Section 3 of this REF.

The removed asphalt will be taken offsite to the contractor's asphalt plant where it will be reused as RAP in accordance with the Reclaimed Asphalt Pavement Resource Recovery Order and Exemption.

No environmental problems are anticipated for the disposal of waste.

Neutral impact

(n) Any increased demands on resources, natural or otherwise which are, or are likely to become, in short supply?

The proposed works would not significantly increase demands on resources, which are, or are likely to become, in short supply. Relatively small amounts of materials would be required for the proposed works. The safeguards listed in Section 3 of this REF would be implemented to minimise any impacts.


(o) Any cumulative environmental effect with other existing or likely future activities?

The proposed activities have the potential to have cumulative environmental effects with other existing or likely future activities, however the effects would be minimal due to the limited scope of works for the activities covered in this REF, and the potential impacts on the environment would be minimised with the implementation of the safeguards given in Section 3 in this REF.

Minor long term negative impact

(p) Any impact on coastal processes and coastal hazards, including those under projected climate change conditions?

The proposed activity would have no impact on coastal processes and coastal hazards, including reference to projected climate change conditions.

No impact

4.2 Matters of national environmental significance checklist

Under the environmental assessment provisions of the Environment Protection and Biodiversity Conservation Act 1999, the following matters of national environmental significance are required to be considered to:

• assist in determining whether the proposal should be referred to the Australian Government Department of the Environment

• for nationally listed threatened species, ecological communities and migratory species, whether the impacts are significant and should be assessed via a Project REF.


Factor

c. Any impact on a wetland of international importance?

Impact

Nil

d. Any impact on nationally listed threatened biodiversity? Nil

e. Any impact on a Commonwealth marine area? Nil

f. Does the proposal involve a nuclear action (including uranium mining)?

Nil

Additionally, any impact (direct or indirect) on Commonwealth land? Nil


1. There is to be no release of dirty water into drainage lines and/or waterways.

2. Any material transported onto pavement surfaces would be swept and removed as required and at the end of each shift.

3. In the case of a rain event occurring while works are underway and there is a risk of material entering a drain, drainage pits are to be protected by placing an inlet filter at the pit to prevent material from entering the drain.

4. All fuels, chemicals and liquids are to be stored in an impervious bunded area a minimum of 50 metres away from creeks, waterways or any areas of concentrated water flow and slopes above 10%.

5. Vehicle fuelling will be undertaken prior to accessing site to minimise any fuelling requirements onsite. Refuelling of plant and equipment is to occur in impervious bunded areas located a minimum of 50 metres from drainage lines or waterways.

6. Cleaning of spray bars will be undertaken offsite at a cleaning facility in the contractor's depot.

7. Cleaning of the Paver and Material Transfer Vehicle (or equivalent equipment which is remaining onsite or at marshalling area) is to occur in a designated clean out area that is not near any drains or water catchment area.

Waterways and water quality

This area will be constructed by laying of a heavy-duty tarpaulin with 30mm of sand on top of the tarpaulin. On top of the sand there will be 30-50mm of Profiling's/Aggregate to give a sound base for the paver and shuttle Buggy to park. A bund is then created under the edge of the tarpaulin using Profiling's/Aggregate.

A cleaning fluid, that is vegetable oil based, is sprayed on the plant/equipment and left until next shift. The cleaning fluid causes the asphalt to dis-bond from the plant /equipment and fall into the bunded area as a non-viscose mass. This product is removed offsite once sufficient volume is formed.

The designated clean out area is removed and the site is restored on completion of works.

8. An emergency spill kit is to be kept on site at all times. All staff are to be made aware of the location of the spill kit and trained in its use.

9. If an incident (e.g. spill) occurs, the Roads and Maritime Services Environmental Incident Classification and Reporting Procedure is to be followed and the Roads and Maritime Services Contract Manager notified as soon as practicable.

Noise and 10. Implement notification measures including:

5 Summary of safeguards and environmental management measures

This section provides a summary of the site specific environmental safeguards and management measures identified in described in section 3 and 4 of this REF. These safeguards will be implemented to reduce potential environmental impacts throughout construction and operation. A framework for managing the potential impacts is provided with reference to environmental management plans and relevant Roads and Maritime Services QA specifications. Any potential licence and/or approval requirements required prior to construction are also listed.

Table 5.1: Summary of site-specific safeguards for proposed works.


vibration Notification of residents by letter detailing work activities, dates and hours, impacts and mitigation measures, indication of work schedule over the night time period, any operational noise benefits from the works (where applicable) and contact telephone number. Notification will be a minimum of 7 calendar days prior to the start of works.

Specific notification within a 180m radius from the proposed works where there is line of sight, and a 70m radius where there is no line of sight, and for all of the rural residences to the north of Elizabeth Drive. They are to be delivered by letterbox drop to identified stakeholders no later than seven calendar days ahead of nearby construction activities. The specific notification will provide additional relevant information to more highly affected receivers than covered in general letterbox drops, including a recommendation that residents keep windows closed overnight

VMS campaign

Notification on the M7 website

Media release

11. Night time construction noise impact on individual residents shall be limited to two consecutive nights. These periods of work should be separated by not less than one week, and add to a total of 6 nights per month. Where possible, high noise generating works shall be completed before 11pm.

12. Environmental site induction for all employees, contractors and subcontractors which must include:

all project specific and relevant standard noise and vibration mitigation measures

relevant licence and approval conditions

permissible hours of work

- any limitations on high noise generating activities

- location of nearest sensitive receivers

- construction employee parking areas

designated loading/unloading areas and procedures

- site opening/closing times (including deliveries)

environmental incident procedures

13. Behavioural practices including:

No swearing or unnecessary shouting or loud stereos/radios on site.

- No dropping of materials from height, throwing of metal items and slamming of doors.

14. Update Construction Environmental Management Plans to account for changes in noise and vibration management issues and strategies.

15. Work generating high noise and/or vibration levels will be scheduled during less sensitive time periods.

16. Use quieter and less vibration emitting construction methods where feasible and reasonable. Ensure plant including silencers are well maintained.

17. The noise levels of plant and equipment must have operating Sound Power or Sound Pressure Levels compliant with the criteria in RMS


Construction Noise and Vibration Guideline 2016 (see Table 1 below). Implement a noise monitoring audit program to ensure equipment remains within the more stringent of the manufacturers specifications or the levels below.

TAW 2 P ant and equipment sound poyver levels ,.

Activity Description of Activity

Plant/ Equipment LA" SWL LAe, at 7m

Daymakers 98 73

Pavement profiler 117 92 Milling the asphalt

Re- to expose the Dump truck 110 85

surfacing works

underlying concrete, then laying new asphalt

Front end loader 112 87

Pavement laying machine 114 89

Asphalt truck & sprayer 106 81

Smooth drum roller 107 82

18. The offset distance between noisy plant and adjacent sensitive receivers is to be maximised. Plant used intermittently are to be throttled down or shut down. Only have the necessary plant and equipment on site.

19. Plan worksites and activities to minimise noise and vibration including the following:

- Locate compounds away from sensitive receivers and discourage access from local roads.

- Plan traffic flow, parking and loading/unloading areas to minimise reversing movements within the site.

- Where additional activities or plant may only result in a marginal noise increase and speed up works, consider limiting duration of impact by concentrating noisy activities at one location and move to another as quickly as possible.

- Very noise activities should be scheduled to be completed before 11:00pm.

20. Use only the minimum necessary size and power plant and equipment required for the work.

21. Non-tonal reversing beepers (or an equivalent mechanism) must be fitted and used on all construction vehicles and mobile plant regularly used on site and for any out of hours work. Consider the use of ambient sensitive alarms that adjust output relative to the ambient noise level.

22. Minimise disturbance arising from delivery of goods to construction sites including:

- Loading and unloading of materials/deliveries is to occur as far as possible from sensitive receivers. .

- Select site access points as far as possible away from sensitive receivers.

- Dedicated loading/unloading areas to be shielded if close to sensitive receivers.

- Delivery vehicles to be fitted with straps rather than chains for unloading, wherever possible.


23. Construction vehicles are to limit the use of engine compression brakes at night and in residential areas. Ensure vehicles are fitted with a maintained Original Equipment Manufacturer exhaust silencer or a silencer that complies with the National Transport Commission's 'In-service test procedure' and standard.

24. Temporary signage is to be installed to discourage the use of engine compression braking along detour routes.

Air quality 25. Works (including the spraying of paint and other materials) are not to be carried out during strong winds or in weather conditions where high levels of dust or air borne particulates are likely.

26. Vehicles transporting waste or other materials that may produce odours or dust are to be covered during transportation.

27. A mill with an inbuilt load controlled automatic water spray systems for dust suppression is to be used.

Non- Aboriginal Heritage

28. If unexpected archaeological remains are uncovered during the works, all works must cease in the vicinity of the material/find and the steps in the Roads and Maritime Services Standard Management Procedure: Unexpected Heritage Items must be followed. Roads and Maritime Services Senior Environment Specialist - Heritage must be contacted immediately.

29. If any items defined as relics under the NSW Heritage Act 1977 are uncovered during the works, all works must cease in the vicinity of the find and the Roads and Maritime Services Senior Environment Specialist - Heritage contacted immediately.

Aboriginal Heritage

30. If Aboriginal heritage items are uncovered during the works, all works in the vicinity of the find must cease and the Roads and Maritime Services Aboriginal cultural heritage officer and regional environment manager contacted immediately. Steps in the Roads and Maritime Services Standard Management Procedure: Unexpected Heritage Items must be followed.

Traffic and transport

31. Any disturbance to traffic movements is to be minimised to prevent unnecessary traffic delays.

32. If passing the worksite is deemed unsafe to pedestrians or cyclists then they will be redirected to the M7 Shared Path which parallels the Motorway.

33. VMS's will be used to inform motorists of the detours ahead and possible delays.

34. A VMS campaign will run prior to the works to inform motorists of the upcoming works.

35. Oversize vehicle movements will be restricted when detours are in place. RMS Heavy Vehicle Unit and RMS Live Traffic will be informed of any detours in place that may prevent oversize vehicle movement to allow consideration when issuing permits.

36. The Trucking Association will be advised of the intended works and detour routes.

37. All changes to traffic conditions will be sign posted and illuminated.

Socio- economic

38. Existing access for nearby and adjoining properties is to be maintained at all times during the works unless otherwise agreed to by the affected property owner.


Requirement Timing

Road Opening Licence A minimum of 10 days prior to the commencement of the works.

Communications Plan A minimum of 10 days prior to issuing notification of works.

39. Community consultation is to be undertaken in accordance with the Community Involvement Practice Notes and Resource Manual.

40. Complaints received are to be recorded and attended to promptly in accordance with the Community Involvement Practice Notes and Resource Manual.

Landscape character and visual amenity

41. Light towers to be positioned and operated to minimise light spillage on residential properties during construction works.

Waste 42. Resource management hierarchy principles are to be followed:

• Avoid unnecessary resource consumption as a priority

• Avoidance is followed by resource recovery (including reuse of materials, reprocessing, recycling and energy recovery)

• Disposal is undertaken as a last resort

(in accordance with the Waste Avoidance & Resource Recovery Act 2001).

43. A waste management plan would be prepared as part of the construction environmental management plan and implemented during construction.

44. Waste material is not to be left on site once the works have been completed.

45. Working areas are to be maintained, kept free of rubbish and cleaned up at the end of each working day.

5.1 Licensing and approvals

List of licences and / or approvals required for the proposed works:


6 Appendices

Appendix A — Location of proposed works

Appendix B — Noise Impact Assessment

Appendix C — Project Sequencing Plan

Appendix D — Heritage Search Results


7 Certification, review and decision

7.1 Certification

This minor works review of environmental factors provides a true and fair review of the proposal in relation to its potential effects on the environment. It addresses to the fullest extent possible all matters affecting or likely to affect the environment as a result of the proposal.

Prepared by:

Eloise Doyle

Risk and Compliance Manager

Westlink Services

Date: 23/11/2016

Minor Works REF reviewed by:

Daniel Lovett

Safety, Environment & Stakeholder Manager

NorthWestern Roads Management Services Company Pty Ltd

(for WS0 Co Pty Ltd)

Date: 23/11/2016


7.2 Environment staff review

The Minor Works REF has been reviewed and considered against the requirements of sections 111 and 112 of the Environmental Planning and Assessment Act 1979.

In considering the proposal this assessment has examined and taken into account to the fullest extent possible, all matters affecting or likely to affect the environment by reason of 1

1 that activity as addressed in the Minor Works REF and associated information. This assessment is considered to be in accordance with the factors required to be considered under clause 228 of the Environmental Planning and Assessment Regulation 2000.

The proposal described in the Minor Works REF will have some environmental impacts which can be ameliorated satisfactorily. Having regard to the safeguard and management measures proposed, this assessment has considered that these impacts are unlikely to be significant and therefore an approval for the proposal does not need to be sought under Part 5.1 of the Environmental Planning and Assessment Act 1979.

The assessment has considered the potential impacts of the activity on critical habitat and on threatened species, populations or ecological communities or their habitats for both terrestrial and aquatic species as defined by the Threatened Species Conservation Act 1995 and the Fisheries Management Act 1994.

The proposal described in the Minor Works REF will not affect declared critical habitat. The activity described in the Minor Works REF will not significantly affect threatened species, populations or ecological communities or their habitats. Therefore a species impact statement is not required.

The assessment has also addressed the potential impacts on the activity on matters of national environmental significance and any impacts on Commonwealth land and concluded that there will be no significant impacts. Therefore, there is no need for a referral to be made to the Australian Government Department of the Environment for a decision by the Commonwealth Minister for the Environment on whether assessment and approval is required under the Environment Protection and Biodiversity Conservation Act 1999.

The REF is considered to meet all relevant requirements.


7.3 Environment staff recommendation

It is recommended that the proposal to undertake asphalt resheeting of the M7 Motorway from its southern extent near the M5 motorway (chainage -730) to crossover 5 to the north of Elizabeth Drive (chainage 12700). as described in this Minor Works REF proceed subject to the implementation of all safeguards identified in the Minor Works REF and compliance with all other relevant statutory approvals, licences, permits and authorisations.

The Minor Works REF has examined and taken into account to the fullest extent possible all matters likely to affect the environment by reason of the activity and established that the activity is not likely to significantly affect the environment or threatened species, populations, ecological communities or their habitats.

The REF has concluded that there will be no significant impacts on matters of national environmental significance or any impacts on Commonwealth land.

The REF determination will remain current for five years until November 2021 at which time it shall lapse if works have not been physically commenced. The pre-construction checklist must be completed prior to the commencement of any works.

Recommended by:

Tracey Austin

Environment Manager, Sydney Region

Date 1/12/16

Noted by:

Craig McFarlane

Project Manager — Motorway Operations

Date fir q /1.-


7.4 Determination

In accordance with the above recommendation and sections 111 and 112 of the Environmental Planning and Assessment Act 1979, I determine that Roads and Maritime Services may:

• proceed with the activity

o*ileAd.r, Felicity Finlayson

General Manager, Motorway Management

Date: 642.//46


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