Further information from consultant MCU12/0184

     Mr David Milligan, W Donald Milligan Pty Ltd                                                         29 November 2013
     Re: Response to Sunshine Coast Regional Further Information Request of 19 November 2013                             -

                                                                                                                             Noise,
                       Dust & Odour Issues   -


                                                 Proposed Poultry Growing Sheds, Ridgewood
                                                                                                          L26013/BH/12-002




     4.               Provide a response to the assertion from Pacific Environment that with regard to the flux
                      chamber method, recent research including Parker et. al (2009)and Hudson & Ayoko

                  (2008)have both concluded that for gas phase controlled odorants, the use of the flux
                      chamber can under predict emissions. The emission rate reported in the Golder report
                      was   350 ou/m2/min (5.8 ou/m2/sec). The aged stockpile OER was reported as on
                      average 3,200 ou/m2/min (53 ou/m2/sec) which is ten times higher than that used for
                      the modelling for the stockpiles.


     The poultry litter stockpiles measured at Queensland Organics for the purpose of the
     Narangba Industrial Estate Health Risk Assessment were for both ’fresh litter
     stockpiles’ and ’aged litter stockpiles’. The ’aged litter stockpile’ odour emissions are
     not expected to be relevant to the mechanically turned windrow system proposed to
     be operated at the subject site. The aged litter stockpiles would have been stagnant
     bulk stockpiles stored for an extended period without turning, resulting in anaerobic
     conditions which significantly increase odour emission rates.


     The               proposed operation           involves mechanical     turning using       a     compost turning
     machine on an approximate weekly basis. This mechanical turning procedure allows
     sufficiently aerobic conditions to be maintained which reduces odour emission rates.
     For this reason, the ’fresh litter stockpiles’ odour emission rate of 350 OU/m2/minute
     measured for the Queensland Health Study was considered to be most applicable.
     MWA Environmental also notes that for the two ’aged litter stockpile’ samples taken
     for the Queensland Health study, odour emission rates measured at 3200
     OU/m2/minute and 580 OU/m2/minute. Thus, average odour emission rates from the
     ’aged litter stockpiles’ were not actually ten times higher than the ’fresh litter’ sample
     emission rate considered appropriate and modelled by MWA Environmental.


     MWA Environmental has compared the adopted litter composting odour emission
     rate of 350 OU/m2/minute                       (5.8 OU/m2/second) to published odour emission rates
     from other composting facilities, as follows:


              MWA Environmental Adopted:                                 5.80U/m2/second
              Effective Peak SOER from Litter in Shed1: 11                      OU/m2/second              under          forced
                                                                                ventilation          conditions                and
                                                                                including     bird    odour          -
                                                                                                                         no    flux
                                                                                hood sampling issues

              Woy Woy Report (URS)2:                                     1.25   OU/m2/second for composting
                                                                                windrows

              Woy Woy Report (URS):                                      4.5 OU/m2/second for mature compost
                                                                                as measured          by wind tunnel




     I
         23800/2080            =   11 based upon peak 23800 OU/s from largest shed with litter surface area of




r=
     2080m2 also includes bird odour
     2
         Way           Way Waste Management Facility Air Quality Impact Assessment (URS,August 2007)
     referencing measurements of covered windrows published in "K hner M, Fischer IK, (1999)
     Composting with Covers as an alternative to conventional (traditional)decomposting of organic
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