Our aims are to protect the environmental values of road reserves; minimise impacts on the natural environment, energy consumption and waste; and conserve natural resources.
2011 |
2012 |
2013 |
|
GRI Achievements |
B (GRI checked) |
B (GRI checked) |
B (GRI checked) |
Scope 1 and 2 Emissions (t CO2) |
28,042 |
28,368 |
27,949 |
Electricity Usage (MJ) |
108,319,936 |
112,238,856 |
109,300,643 |
Fuel Usage (MJ) |
46,078,344 |
39,885,497 |
47,939,701 |
Gas Usage (MJ) |
650,600 |
1,737,718 |
1,655,049 |
Area Cleared (ha) |
279.7 |
111.6 |
256.4 |
Area Re-vegetated (ha) |
358.3 |
116.1 |
239.2 |
Note: Emissions calculated as per Department of Environment and Conservation requirements which align to the National Greenhouse and Energy Reporting Act 2007.
We recognise that the management of the State road network involves a range of activities that have the potential to negatively impact Western Australia’s unique environment.
Our approach to responsibly managing our road operations is to have an informed and committed workforce guided by policy and systems. Further information can be found on our website. Our Corporate policy establishes principles of environmental protection, impact minimisation and conservation of natural resources.
The Environmental Policy is implemented throughout the organisation via management systems and processes. Our Environmental Management System addresses all business activity that has environmental aspects and risks. The system defines responsibilities and competencies, procedures and standards, auditing and review. This year a comprehensive independent audit resulted in successful recertification of the system to the international standard ISO 14001:2004 Environmental Management Systems. Our environmental objectives are as follows:
With the creation of the Transport Portfolio aiming to enhance the coordination of the State’s transport system and harness the synergies of its three portfolio partners an opportunity exists to develop and deploy an integrated approach to sustainability.
A collaborative project between the Department of Transport, Public Transport Authority and Main Roads has begun delivering a Portfolio Sustainability Policy and action plan. It is expected the policy will be launched in early 2014. Further information can be found on our website.
During the course of the year we have continued to design and deliver residential development with a minimum six star energy rating on the Nationwide House Energy Rating Scheme, and have recently completed installation of solar panels to a residential trial site.
We have also implemented water efficient measures through the use of Water Efficiency Labelling and Standards scheme rated fittings to wet areas, and through the design and implementation of ‘WaterWise’ landscaping and irrigation.
From a commercial perspective, construction continues at Wedgefield on a new laboratory that incorporates solar passive design, insulated roof sheet, double skin insulated walls, efficient lighting, heating/cooling systems and a variety of other water and energy savings measures. Refurbishment of the second floor of the Don Aitken Centre was also completed during the course of the year. Every element of the fit-out was considered from an environmental perspective. Furnishings, materials and finishings were assessed against national and international ratings systems to ensure minimal carbon footprint, and contaminant releases to land, air and water. New LED lighting, lighting control systems and supplementary mechanical services systems were installed. These will return substantial energy saving that will be measured over the following 12 month cycle.
Road planning and project development is subject to environmental impact assessment. Screening and preliminary assessment identifies where more detailed field studies are required. When impacts are likely to be significant, the project will then be referred to State or Commonwealth regulators for statutory approval.
The table below indicates the number of road projects and assessment types. There were three instances of non-compliance this year, all relating to the clearing of native vegetation, which are being addressed through compliance improvement actions. There were no penalties or financial sanctions relating to our operations.
Level of Environmental Assessment |
2010 |
2011 |
2012 |
Number of road projects subjected to environmental screening |
97 |
83 |
114 |
Number of road projects for which environmental impact assessment was conducted |
60 |
44 |
82 |
Number of road projects referred for possible assessment under State or Commonwealth legislation |
8 |
2 |
10 |
Number of road projects assessed under State or Commonwealth legislation |
4 |
1 |
1 |
Environmental Compliance |
|||
Number of environmental non-compliance instances |
12 |
4 |
3 |
Results are only available in calendar year.
We have developed a Carbon Reduction Plan and Target which aims for 5-15% reduction on 2010 levels by 2020 for our Scope One and Two emissions and have finalised a Climate Change Adaptation Plan for our business. Some initiatives that Main Roads has undertaken include upgrading traffic signals with LED lanterns and replacing fluorescent tubes in the Northbridge Tunnel with LED tubes. Further details of the above initiatives and achievements that reduce our emissions and energy consumption can be found on our website.
Scope 1 or 2 and 3 |
2010-11 |
2011-12 |
2012-13 |
GHG Type (t CO2) |
|||
Fuel |
3,597 |
2,914 |
3,196 |
Street and Traffic Lights |
22,894 |
23,400 |
23,031 |
Buildings |
4,816 |
5,378 |
4,993 |
Air Travel |
496 |
513 |
422 |
Fuel – Maintenance activities |
n/a |
n/a |
5,402 |
Offsets |
-1,753 |
-4,535 |
-1,792 |
Total |
30,050 |
27,670 |
35,252 |
Scope 1 or 2 and 3 |
2010-11 |
2011-12 |
2012-13 |
GHG Category (t CO2) |
|||
Scope 1 |
3,160 |
2,803 |
3,052 |
Scope 2 |
24,882 |
25,566 |
24,896 |
Sub total |
28,042 |
28,368 |
27,949 |
Scope 3 |
3,761 |
3,836 |
9,096 |
Offsets |
-1,753 |
-4,535 |
-1,792 |
Total |
30,050 |
27,670 |
35,252 |
Note: 2013 fleet emissions yet to be offset.
The level of emissions is on target to achieve our 2020 goal. Our aim this year was for our Scope One and Two emissions not exceed 30,965 t CO2 which was achieved with our calculated emission levels of 27,949 t CO2. The result is due to initiatives rolled out as part of the Carbon Reduction Plan and largely as a result of the continued roll-out of LED traffic signal lighting on the road network. Our focus for future reductions is from improvements to our street lighting.
Australia has a rich heritage of Aboriginal culture, with heritage sites occurring widely across the State. Our planning and development processes include identifying heritage sites and avoiding them wherever possible. Consultation with Aboriginal community representatives is an important step in understanding the extent and significance of heritage localities, particularly when they have not yet been thoroughly recorded. This year there were 10 formal heritage meetings.
Main Roads is working together with the providers of our Integrated Service Arrangements (ISAs) to improve energy efficiency from maintenance activities. This ranges from on-the-job practice through to sustainability in procurement processes.
For example each ISA is asked to assess their purchase of new plant on a number of criteria including 20% weighting allocated to environmental. Criteria such as service intervals, fuel consumption, engine emission standards, bio-degradable oil and recyclable components are assessed.
Another example is the specification of all operational utilities include dual batteries so they switch off the vehicle and conserve fuel while still running the rotating beacons.
A reporting regime begun during the year with fuel consumption monitored monthly. Any fuel consumption that exceeds 20% of the predicted consumption is investigated. The reported fuel use during 2012-13 was almost 2.5 million litres. No reductions were able to be measured as there was no benchmark to compare against. We will aim to report fuel reductions from next year.
The WA Electric Vehicle (EV) Trial, initiated and managed by local company CO2Smart and in cooperation with the University of Western Australia (UWA)’s Renewable Energy Vehicle Project team, ran from November 2010 to December 2012. This trial was an Australian first and involved the conversion of 11 Ford Focus vehicles for use in Government and private industry light vehicle fleet.
We participated in the trial and gained experience in using the EV within our vehicle fleet and understood the impact of electric vehicles on the road network. Our involvement in the EV Trial has appeared in two television news stories and a number of newspaper reports. The WA EV Trial report has now been released as of June 2013 and is publicly available at http://therevproject.com/trialreport.pdf.
We intend to continue to support EV’s as an initiative targeting transport energy security by maintaining EV’s within our vehicle fleet where practical. We will continue to provide data for UWA’s research purposes from all new EV’s added to our fleet.
We have adopted the Infrastructure Sustainability (IS) rating tool for major projects valued at $100 million and over. This tool is Australia’s only comprehensive rating system for evaluating sustainability across design, construction and operation of infrastructure. Our commitment to the rating tool will see approximately two major projects undergo formal verification and evaluation under the Infrastructure Sustainability Council of Australia’s rating scheme per year. An internal process for evaluating our other major projects for sustainability will be developed based on the IS rating tool.
Supporting schemes such as the IS rating tool directly links to our current approach to sustainability. We have participated in pilot trials during the development of the IS Rating Tool for infrastructure through two major projects. Further to the trials, we achieved a formal rating for the GEH project. For more information on our achievements on the GEH project, please refer to the case study. We have also registered the Gateway WA project to seek formal ratings. More information on the IS rating scheme can be found on our website.
Our main objective in resource conservation is to minimise the environmental impacts of materials used in road construction. Natural materials are crucial in road building, so when obtaining road building materials we endeavour to avoid clearing natural vegetation, particularly high value vegetation. This is achieved through strategic materials searches and extracting material from previously cleared or degraded areas where possible.
The following table details the extent and type of materials extracted over the last three years:
Indicator |
2010 |
2011 |
2012 |
Imported road construction materials |
|||
Sand (000s t) |
842 |
735 |
482 |
Gravel (000s t) |
89 |
1,161 |
1,013 |
Crushed rock (000s t) |
109 |
254 |
2 |
Limestone (000s t) |
320 |
144 |
173 |
Aggregate (000s t) |
60 |
48 |
26 |
Asphalt (000s t) |
68 |
83 |
52 |
Other (000s t) |
159 |
387 |
169 |
Kerbing, barriers, bridges and culverts |
|||
Concrete (cubic metres) |
8,549 |
10,876 |
26,809 |
Other (000s t) |
4.65 |
1.49 |
0.54 |
Indicator |
2010 |
2011 |
2012 |
Waste materials to landfill |
|||
Kerbing (m) |
10,591 |
3,640 |
9,779 |
Pavement/footpath (m2) |
13,438 |
3,445 |
9,041 |
Existing seal (m2) |
88,817 |
215,265 |
227,160 |
Unsuitable material (m3) |
6,360 |
77,944 |
9,683 |
Other (m3) |
10,060 |
8,943 |
767 |
Recycled Materials |
|||
Total (000s t) |
14.66 |
74.08 |
59.09 |
The non-homogenous nature of road projects and wide diversity of materials used across the State mean that it is not possible to make comparisons or draw trend analysis from one year to another.
Great Northern Highway realignment, Port Hedland
The Great Eastern Highway (GEH) Project, officially opened by the Prime Minister, has been verified to have achieved a commendable ‘As Built’ rating under the Infrastructure Sustainability Council of Australia’s Infrastructure Sustainability rating scheme. Following on from participation in a pilot trial of the rating tool, the City East Alliance (CEA) team is proud to be the first project in Australia to achieve an ‘As Built’ rating under this new rating scheme. Read more...