Response to oustanding issues Animal Husbandry MCU12/0184

         Mr David Milligan, W Donald Milligan Pty Ltd                                                     11 September 2013
         Re: Response to Sunshine Coast Regional Council Outstanding Issues Request                 -

                                                                                                         Proposed Poultry
                 Growing Sheds, Ridgewood                                                                 L 18113/BH/12-002




                  The quantitative odour impacts from the required amount of shed litter stockpile

                  storage areas to be used for storage of the litter prior to disposal/spreading on site.


                  It is proposed to minimise potential odour impacts from the stockpiling of the
                  spent litter by:

                             Stockpiling and spreading spent litter only during the period when
                             odour emissions from the broiler sheds is minimal        (i.e. between
                             batches and during the first 3 weeks of the next batch);

                             Covering stockpiles to reduce fugitive odour emissions; and
                             Maintaining aerobic conditions                in   stockpiles using              a   dedicated
                             compost-turning machine.



                  MWA Environmental has calculated that the total surface area of 486 lineal
                  metres of stockpile will be approximately 2141 m2. Odour emissions from the
                  litter stockpiles have been taken from monitoring undertaken at Queensland
                  Organics for the purposes of the Queensland Health study of the Narangba
                  Industrial Estat   The measured odour emission rate from a ’fresh (poultry)
                                                 .




                  manure stockpile’ was 350 OU.m3/minute/m2.



                  Odour emission rates from the litter stockpiles are thus estimated to be a total
                  of 12,500 OU.m3/second6 during the potential 35 day stockpiling period. As a
                  conservative assumption, no odour emission reduction has been                                   applied to
                  account for the covering of the stockpiles.


                  MWA Environmental has represented odour emissions from the spent litter
                  stockpiles in the CALPUFF dispersion model for the 35 day period from the
                  completion of each batch cycle (i.e. 35 days from shed cleanout). Litter
                  stockpiling emissions were modelled as area sources representing the
                  dimensions of the proposed northern and southern stockpile pads. Aside
                  from the representation of odour emissions from the litter stockpile, no further
                  changes to the odour model described in the report Noise and Air Quality
                  Impact Assessment Proposed Poultry Growing Sheds
                                                      -
                                                                                124 Top Forestry -




                  Road, Ridgewood (MWA Environmental, 5 November 2012).

                  A   plot of the model-predicted cumulative 99.5th percentile 1                            hour average
                  odour concentrations                    over   the model domain for the default                 Stocking
                  regime with litter stockpiling are included in Attachment 2. The model-
                  predicted cumulative 99.5th percentile 1 hour average odour concentrations at
                  the representative surrounding residences (R1 to R10, refer Figure 1) are
                  summarised in Table 1 below.




                      ~~-,..                                                                 -~
         5
          Narangba Industrial Estate Emission Monitoring Programme May June 2009 (Golder AWN, October
                                                                                  -




 (
     ;
         2009)
         6350 OU.m3/minute/m2 x 2141m2 + 60 sec/min 12489 OU.m3/second
                                                                   =


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