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Environment Protection Authority

Environmental Issues

Air - NSW overview

Modelling and sampling emissions from industry

Modelling and assessment of air pollutants in NSW

The Approved Methods for the Modelling and Assessment of Air Pollutants in New South Wales (2016) lists the statutory methods that are to be used to model and assess emissions of air pollutants from stationary sources in NSW. It is referred to in Protection of the Environment Operations (Clean Air) Regulation 2010, Part 5: Air impurities from emitted activities and plant. This document may also be referred to in conditions attached to statutory instruments, such as licences or notices issued under the Protection of the Environment Operations Act 1997.

The Approved Methods for the Modelling and Assessment of Air Pollutants (2016) replaces the previous version dated August 2005.

The EPA will reference the Approved Methods (2016) when evaluating air quality impact assessments submitted as part of any planning application on or after the gazettal date of the Approved Methods (20 January 2017).
 
The EPA will reference the Approved Methods document dated August 2005 when assessing air quality impact assessments submitted as part of any planning application prior to 20 January 2017.

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CALPUFF Modelling System Guidance

The CALPUFF Modelling System (which includes the CALMET and CALPUFF models) can be used for regulatory applications in NSW in circumstances where the AUSPLUME dispersion model is not approved or suitable for use. TRC Environmental has prepared a CALPUFF Modelling System guidance document, which provides:

  1. generic guidance for setting site specific model options in CALMET and CALPUFF
  2. model option settings for CALMET and CALPUFF for modelling in a range of conditions and scenarios
  3. optimal methodology to incorporate diagnostic and prognostic meteorological data in CALMET
  4. appropriate procedures for evaluating CALMET and CALPUFF modelling results.

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TRC Environmental's CALPUFF Modelling System guidance document (PDF 980KB).

Assessment of ground-level ozone impact guidance

Assessment of the air quality impacts from stationary sources of oxides of nitrogen (NOx) and volatile organic compounds (VOCs) needs to consider the potential generation of ground-level ozone. EPA commissioned Environ to develop a tiered approach to ozone impact assessment. The assessment framework includes:

  • Guidance on the application of a level 1 assessment – screening procedure
  • Guidance on the application of a level 2 assessment – refined procedure.

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Sampling and analysis of air pollutants in NSW

The Approved Methods for the Sampling and Analysis of Air Pollutants (January 2007) lists the statutory methods that are to be used to sample and analyse air pollutant emissions from stationary sources (including continuous monitoring); pollutant emissions from motor vehicles; components in, and properties of, petroleum products; and pollutants in ambient air. It is referred to in:

It may also be referred to in conditions attached to statutory instruments such as licences or notices issued under the Protection of the Environment Operations Act 1997.

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Approved Methods for the Sampling and Analysis of Air Pollutants in NSW (PDF 425KB)

FAQ

Frequently asked questions about the approved methods

Modelling and Assessment technical review documentation

The EPA has commissioned a series of reports to assist with evaluating the current air quality assessment framework and methodologies adopted in NSW. The reports catalogue assessment methodologies adopted in other jurisdictions. The EPA will use these reports to ensure assessment practices adopted in NSW are consistent with best practice approaches and contemporary scientific understanding.

For current policy and assessment requirements in NSW, please refer to the Approved Methods for the Modelling and Assessment of Air Pollutants in NSW (PDF 403KB).

Page last updated: 31 January 2017