Attachment 6 - Odour Impact Assessment - Katestone · 132005.638.06

Figure 3      Layout of odour sources at the existing landfill facility (four layouts tested)

4.3      Meteorology

The same meteorological input files to the CALPUFF dispersion model have been used as were used in a previous
Katestone assessment of the Noosa Resource Recovery Centre. That assessment selected 2020 as the
representative year, which is still considered representative and is therefore used in this assessment.

The modelling was conducted using the most recent versions of the TAPM (version 4.0.5) and CALMET (version
6.5.0) models at the time of undertaking the modelling. A site-specific meteorological data file was generated for
the facility by coupling the prognostic model TAPM with the diagnostic meteorological model CALMET. The coupled
TAPM/CALMET modelling system was developed to enable high resolution modelling capabilities for regulatory
and environmental assessments. The modelling system incorporates synoptic, mesoscale, and local atmospheric
conditions, detailed topographic and land use categorisation schemes to simulate synoptic and regional scale
meteorology for input into pollutant dispersion models such as CALPUFF. Technical details of the TAPM and
CALMET model configurations are provided in Appendix A, including a validation of the generated data and a
summary of the meteorological data generated for the study area.


4.4      Dispersion modelling

The CALPUFF model (version 7.2.1) was used for dispersion modelling. CALPUFF is an advanced non-steady-
state air quality modelling system. Twelve months of modelled meteorological data was used as input for the
dispersion model in order to include all weather conditions likely to be experienced in the region during a typical
year, as described in Appendix A.

Emission sources were configured in CALPUFF based on the emissions information and geometry for each source
detailed in Section 4.2 and in Appendix A. Details of the model configuration are provided in Section A2 of Appendix



 Katestone Environmental Australia Pty Ltd                                                     17 September 2026
 D25072-8 Noosa Council - Noosa Composting Odour Assessment - Final                                     Page 11