Noise and Air Quality Impact Assessment W D Milligan 31 July 2014

                                                                            MWA Environmental




    4.3.2 GEOPHYSICAL DATA

    The dust modelling geophysical data is consistent with that described in Section
    3.3.2 above.



    4.3.3 DUST EMISSION RATES

    Emissions of dust from the poultry sheds were estimated using the National
    Pollutant Inventory publication ‘Emission Estimation Technique Manual for
    Intensive Livestock – Poultry Raising, Version 1.0 13 June, 2002’. The National
    Pollutant Inventory lists a PM10 emission rate factor for broiler farms of 0.088
    kg(PM10)/animal/year. Variable particulate emissions from each shed was
    represented for Default Stocking and the Staggered Stocking scenarios.

    The relative emissions of Total Suspended Particulates, PM10 and PM2.5 were
    derived from information presented by Mirrabooka Consulting7 based upon a
    report prepared by Holmes Air Sciences8.

        TSP as % of Total Dust:           100%
        PM10 as % of Total Dust:          77%
        PM2.5 as % of Total Dust:         19% (assumed as half of PM5 fraction
                                                reported by HAS (2003)


    The individual particle size fractions were modelled as separate species in
    CALPUFF, and then the overall TSP, PM10 and PM2.5 concentrations were
    grouped. This allows the model to more accurately characterise the rate of dust
    deposition from the plume.



    4.3.4 DUST SOURCE REPRESENTATION

    The dust source representation in the model is consistent with that described in
    Section 3.3.4 above.




7 Mirrabooka Consulting., 2006. Churchable Broiler Farm Noise, Odour & Dust Impact Study
8 Holmes Air Sciences, 2003. Proposed Broiler Farm at Karuah, Responses to Planning NSW Comments



Ridgewood 12-002                               23                                    31 July 2014