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

                                                                            MWA Environmental




   Table 4:           Ventilation Fan Sound Power Level Spectra – dB(A)

                                     SOUND POWER LEVEL SPECTRA - dB(A)                         AP
      SOURCE
                       31Hz   63Hz    125Hz   250Hz   500Hz   1kHz   2kHz    4kHz     8kHz    dB(A)

    Ventilation Fan
                       61.7   74.1     76.8   79.6    86.8    87.4   84.0     76.7     68.3   91.8
      (per fan)

   Source noise levels for catch-out activities (i.e. forklifts, trucks) and feed
   deliveries (i.e. feed transfer blower, truck) were taken from previous
   measurements undertaken by MWA Environmental at similar facilities.

   The modelled source sound power levels are summarised in Attachment 3.



   2.3.3 RESULTS OF NOISE MODELLING

   The results of the SoundPLAN 7.3 modelling are provided in Attachment 4 as
   contours of predicted resultant noise levels on an aerial photograph base.

   The predicted resultant noise levels at the nearest residential dwellings locations
   (refer to Figure 3) are summarised in Table 5 below for the ‘continuous noise
   sources’ (ventilation fans) and Table 6 below for the ‘intermittent noise sources’
   (catch-out activities and feed deliveries).




Ridgewood 12-002                              10                                     31 July 2014