Acoustic Report

6. Noise Criteria
6.1     Environmental Noise Criteria
To ensure a reasonable acoustic amenity is maintained, we recommend environmental noise be
assessed in accordance with the Environmental Protection (Noise) Policy 2008, as follows:


6.1.1    Acoustic Quality Objectives
Table 4 presents the acoustic quality objectives at noise sensitive receptors as detailed in Schedule
1 of the EPP (Noise) 2008.

                          Table 4: Acoustic Quality Objectives at Noise Sensitive Properties

                                                                      Acoustic Quality Objectives, dB(A)
          Sensitive Receptor          Time of Day
                                                                 LAeq,adj,1hr      LA10,adj,1hr            LA1,adj,1hr

              Dwelling             Day and Evening
                                                                     50                  55                   65
             (outdoors)             (7am – 10pm)

                                   Day and Evening
              Dwelling                                               35                  40                   45
                                    (7am – 10pm)
              (Indoors)
                                 Night (10pm – 7am)                  30                  35                   40



6.1.2    Background Creep
The Background Creep criteria are as follows;

        Time-varying noise:
                                     LAeq,adj,T, ≤ Ambient LA90,T + 5dB(A)

        Steady-state noise:
                                             LA90,T ≤ Ambient LA90,T

The time period (T) is a time interval of at least 15 minutes, or if the noise continues for less than
15 minutes, the duration of the noise source.

Based on the results of ambient noise monitoring, the project specific background creep noise limits
are shown in Table 5.
                                      Table 5: Background Creep Noise Limits
                                                             Noise Level Limits SPL dB(A)
                           Time Period               Receivers 1 & 2                Receiver 3
                                                    LAeq,T        LA90,T        LAeq,T            LA90,T
                          Day 7am – 6pm              44            39            54                49
                      Evening 6pm – 10pm             46            41            52                47
                       Night 10pm – 7am              41            36            47                42




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