Tallawarra B Permit Modification: Air Quality Assessment Prepared for: EnergyAustralia June 2020 Final Prepared by: Katestone Environmental Pty Ltd www.katestone.com.au ABN 92 097 270 276 [email protected] Ground Floor, 16 Marie Street | PO Box 2217 Ph +61 7 3369 3699 Milton, Brisbane, Queensland, 4064, Australia Fax +61 7 3369 1966 Document Control Deliverable #: D19105-5 Title: Tallawarra B Project Approval Modification: Air Quality Assessment Version: 1.1 (Final) Client: EnergyAustralia Document reference: D19105-4 Tallawarra B Permit MOD Air Quality Assessment Prepared by: Andrew Vernon, Daniel Gallagher and Natalie Shaw Reviewed by: Simon Welchman Approved by: Simon Welchman 25/6/2020 Disclaimer https://katestone.global/report-disclaimer/ Copyright This document, electronic files or software are the copyright property of Katestone Environmental Pty. Ltd. And the information contained therein is solely for the use of the authorised recipient and may not be used, copied or reproduced in whole or part for any purpose without the prior written authority of Katestone Environmental Pty. Ltd. Katestone Environmental Pty. Ltd. Makes no representation, undertakes no duty and accepts no responsibility to any third party who may use or rely upon this document, electronic files or software or the information contained therein. © Copyright Katestone Environmental Pty. Ltd. Contents Executive Summary ...................................................................................................................................... v 1. Introduction ..................................................................................................................................... 1 2. Project Description ......................................................................................................................... 2 2.1 Overview .......................................................................................................................................... 2 2.2 TBPS infrastructure ............................................................................................................................ 2 3. Assessment Methodology .............................................................................................................. 3 3.1 Legislative requirements .................................................................................................................. 3 3.2 Surrounding environment ................................................................................................................ 3 3.3 Site specific meteorology ............................................................................................................... 3 3.4 Emission rates ................................................................................................................................... 3 3.5 Local air quality assessment ............................................................................................................ 4 3.5.1 Cumulative impacts ......................................................................................................... 4 3.5.2 NOx conversion to NO2 .................................................................................................... 4 3.5.3 Presentation of results ....................................................................................................... 5 3.6 Regional air quality assessment ...................................................................................................... 5 3.7 Limitations and uncertainty............................................................................................................. 5 4. Legislative Framework for Air Quality............................................................................................ 6 4.1 Protection of the Environment (Operations) Act 1997 .................................................................. 6 4.2 Clean Air Regulation ....................................................................................................................... 6 4.3 Environmental Protection License .................................................................................................. 8 4.4 Assessment requirements ................................................................................................................ 8 5. Existing Environment ..................................................................................................................... 10 5.1 Climate ........................................................................................................................................... 10 5.2 Local terrain and land-use ............................................................................................................ 10 5.3 Meteorology................................................................................................................................... 11 5.4 Existing air quality ........................................................................................................................... 16 5.4.1 Existing sources of emissions ........................................................................................... 16 5.4.2 Existing air quality ............................................................................................................ 18 5.4.3 Background levels for the cumulative assessment ...................................................... 20 5.5 Sensitive receptors ......................................................................................................................... 20 6. Dispersion Meteorology ............................................................................................................... 23 6.1 Wind speed and wind direction ................................................................................................... 23 6.2 Atmospheric stability ..................................................................................................................... 25 6.3 Mixing height .................................................................................................................................. 26 7. Emissions to the Atmosphere ....................................................................................................... 28 7.1 Normal load operations (100% and MEL) .................................................................................... 28 7.2 Start up ........................................................................................................................................... 29 7.3 Tallawarra A Power Station ........................................................................................................... 30 8. Local Air Quality Impact Assessment ......................................................................................... 31 8.1 Nitrogen Dioxide ............................................................................................................................ 31 8.2 Particulate Matter (as PM10 or PM2.5) ............................................................................................ 33 9. Regional Air Quality Assessment ................................................................................................. 36 9.1 Methodology ................................................................................................................................. 36 9.2 Input data ...................................................................................................................................... 36 9.3 Results ............................................................................................................................................. 36 10. Greenhouse Gas Assessment ...................................................................................................... 37 10.1 Regulatory framework ................................................................................................................... 37 10.1.1 National policy ................................................................................................................ 37 10.1.2 National Greenhouse and Energy Reporting (NGER) .................................................. 37 10.1.3 NSW context .................................................................................................................... 38 10.2 Assessment methodology ............................................................................................................. 38 10.3 GHG Assessment ............................................................................................................................ 39 11. Conclusions ................................................................................................................................... 40 12. References .................................................................................................................................... 42 Appendix A Meteorological and dispersion modelling methodology........................................... 47 Katestone Environmental Pty Ltd 25 June 2020 D19105-5 EnergyAustralia – Tallawarra B Project Approval Modification: Air Quality Assessment Page i – Final A1 Meteorology................................................................................................................................... 47 A1.1 TAPM meteorology ........................................................................................................