Regenerative Thermal Oxidiser (RTO) @ Wagerup
Wagerup refinery is the most environmentally advanced alumina refinery in the world.

Environmental Management
Wagerup refinery is committed to continuously improve its environmental performance, reduce environmental impacts and develop more sustainable operating practices.

The refinery’s environmental management system is focussed on these key areas:
  • Air quality management
  • Greenhouse gas reduction and energy efficiency
  • Noise management
  • Water management and conservation
  • Land stewardship and visual amenity 
  • Waste management

For more detail on Alcoa’s environment management, click here.

Read our Environmental Improvement Plan.

Air Quality Management
The management of air quality from Alcoa’s Wagerup refinery receives close community and government scrutiny and we are committed to ongoing improvement in this area. In recent years Alcoa has worked with scientists from the DoE, Chemistry Centre of Western Australia (CCWA), the CSIRO and community representatives to better understand and manage air quality at Wagerup. This work has contributed to a number of successful emission reductions projects which have resulted in significant improvements in key areas. Outcomes of detailed monitoring and modelling work conducted in 2005 show the air quality around the Wagerup refinery is typical of a rural Australian environment in terms of the nature and quantity of chemicals found. It also found the refinery contributes only a small amount of chemical compounds to local air.
Noise Management
Noise from Wagerup Refinery is recognised as a potential impact on residents living close to the refinery and is therefore a priority area of environmental management. From 1999-2001 a noise reduction program at the refinery reduced night-time noise levels five decibels. Despite this, noise monitoring and modelling showed that refinery noise still exceeded night-time assigned noise levels at some private residences under weather conditions most conducive to noise propagation.
Variation to assigned noise levels
In 2013 the Minister for Environment granted Wagerup refinery a variation to the assigned noise levels under Regulation 17 of the Environmental Protection (Noise) Regulations 1997. Regulation 17 recognises some facilities constructed before the noise regulations were introduced might not be able to comply with the new and more stringent noise levels through reasonable and practicable measures. Noise monitoring undertaken as a requirement of the variation shows that refinery noise emissions during 2014 and 2015 were demonstrably lower than those recorded at the same locations during 2002 and 2003.
Read the full noise monitoring report here

Noise monitoring @ Wagerup
In addition to continuous noise monitoring, source monitoring is undertaken at specific points around the refinery.

In-stack monitoring @ Wagerup
External consultants ECS perform in-stack monitoring on the calciners at Wagerup refinery.

Wagerup 2015 Annual Audit Compliance Report
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Wagerup 2014 Annual Audit Compliance Report
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Wagerup 2013 Annual Audit Compliance Report
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Wagerup 2012 Annual Audit Compliance Report
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Wagerup 2011 Annual Audit Compliance Report
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Wagerup 2010 Annual Audit Compliance Report
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Wagerup 2009 Annual Audit Compliance Report
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Wagerup 2008 Annual Audit Compliance Report
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Wagerup 2007 Annual Audit Compliance Report
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