Appendix 6. Odour Buffer Assessment [As Published] · 132007.2399

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                Odour Buffer Assessment
                StarCo Developments



       40%

       35%

       30%

       25%

       20%

       15%

       10%

        5%

        0%
                   A             B               C            D             E              F

                                             A   B   C    D   E   F


    Figure 5.2: Frequency of Pasquill-Gifford stability classes for the subject site derived from TAPM




5.4 Meteorological Data Validation

The meteorological data set used in dispersion modelling is dominated by the observations made
by the Bureau of Meteorology (BOM) site at Tewantin. The validity of this data set has been tested
through comparisons with onsite data collected between December 2004 and February 2005.

A data set of surface meteorology extracted for the Noosa Springs site from the 2003 modelling
year, indicated very little variation from that recorded by the BOM at Tewantin. Similarly, data
recorded by PAE between December and February showed good comparison between wind
directions and temperatures at the two sites. Some variations were observed with wind speeds but
these can be attributed to siting conditions of the two weather stations.

Overall, comparisons of the two data sets indicate that the dispersion modelling CALMET data set
provides a good representation of meteorology in the Noosa Springs area.




6     MODELLING RESULTS

The predicted odour concentrations resulting from the Noosa STP based on the estimation
techniques discussed in the previous section are shown below in Figure 6.1 for CALPUFF modelling.




1898a report final.doc                                                       PAE Job Number 1898a