Appendix 4 - Noise impact assessment

   Table 5.2: Background creep requirements of EPP Noise

                                                                          Permitted Noise Emission
                              Measured
                                                                                   dB(A)
                             Background
      Time of Day
                                Level                 Continuously Operating
                             LA90 dB(A)                                                     Time Varying Noise
                                                              Plant
                                                                                                 LAeq,adj,T
                                                              LA90,T
        Daytime
      (7am to 6pm)
                                   46                               46                                51
        Evening
     (6pm to 10pm)
                                   391                              39                                44
         Night
     (10pm to 7am)
                                   302                              30                                35

   Note 1: The background noise level at ML2 during the evening was measured at LA90 37 dB(A). Given the background
   noise was measured behind a 1.8m high fence, a background noise level of LA90 39 dB(A) as measured at ML1 has been
   used in the assessment which conservatively represents the upper level background noise for residences in Blue Fin Court

   Note 2: The background noise level at ML2 at night was measured at LA90 27 dB(A). Given the background noise was
   measured behind a 1.8m high fence, a background noise level of LA90 30 dB(A) as measured at ML1 has been used in the
   assessment which conservatively represents the upper level background noise for residences in Blue Fin Court
   Sleep Disturbance
   The World Health Organisation (WHO) set out a Sleep disturbance noise criteria in the “WHO
   Guidelines for community noise”. Table 1 of that guideline establishes that sleep disturbance can
   occur inside bedrooms when the maximum noise level is at LAmax 45 dB(A) (10pm to 7am). In
   practice, with a bedroom window open, this internal noise level will be equivalent to an outside
   maximum noise level of LAmax 50 to 55 dB(A) [depending on building construction]. It is noted that
   the LAmax is generally considered equivalent to the LA01, 1 minute.

   Project Specific Noise Criteria
   Considering the criteria discussion above, the project specific noise criteria is summarised in
   Table 5.3.3 below.
   Table 5.3.3: Project Specific Noise Levels
                                                          Recommended Nosie Limits dB(A)
                                      Continuously Operating
            Time of Day                                        Time Varying Noise      Short Duration Events
                                              Plant
                                                                    LAeq,adj,T                 LAMax
                                              LA90,T
       Daytime and evening
                                        46 dB(A) L90 (Outdoors)          50 dB(A) Leq (Outdoors)               N/A
          (7am to 10pm)
       Daytime and evening
                                        44 dB(A) L90 (outdoors)          45 dB(A) Leq (Outdoors)               N/A
         (7am to 10pm) 1
            Night-time
                                      35 dB(A) L90 (Outdoors)            35 dB(A) Leq (outdoors)    50 dB(A) L90 (Outdoors)
         (10pm to 7am) 1
     When Commercial in use                                              50 dB(A) Leq (Outdoors)

   Note 1: A conservative 5 dB(A) inside to outside building façade correction has been applied to dwellings and to
   commercial uses.




© Alpha Acoustics Pty Ltd                                                                    Page 13 of 25
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