Orange on Sunrise - Appendix A - Acoustic Report - 151116

Orange on Sunrise




                     Table 1 Environmental Protection (Noise) Policy 2008 Acoustic Quality Objectives

                      Sensitive          Time        of   Acoustic quality objectives (measured       Environmental
                      receptor           day              at the receptor) dB(A)                      value
                                                          LAeq,adj,1hr   LA10,adj,1hr   LA1,adj,1hr

                      Dwelling           Daytime              50                55           65       Health and
                      (for               and evening                                                  wellbeing
                      outdoors)
                      Dwelling           Daytime              35                40           45       Health and
                      (for indoors)      and evening                                                  wellbeing
                                         Nighttime            30                35           40       health and
                                                                                                      wellbeing, in
                                                                                                      relation to the
                                                                                                      ability to sleep

                     External noise levels are most relevant for the daytime and evening periods, while
                     internal noise levels are relevant to night-time when people are sleeping. For ease
                     of the assessment, it is useful to convert the internal noise criteria to external
                     levels. Outside to inside insertion loss is assumed to be approximately 10 dB(A),
                     which is consistent with AS 3671 – Acoustics – Road traffic noise intrusion –
                     Building siting and construction.
                     The external night-time noise criteria are therefore:
                               LAeq,adj,1hr    40 dB
                               LA10,adj,1hr    45 dB
                               LA1,adj,1hr     50 dB

                     2.2       Mechanical Plant Noise
                     There is no significant mechanical plant associated with the operation.


3 Measurements
                     Unattended noise measurements were carried out at the position shown in Figure
                     3 and Figure 4 using a Rion NL-21 (serial no. 718) sound level meter recording
                     “fast” response A-weighted sound levels at 15-minute intervals, with the
                     microphone at a height of approximately 1.2 m. The measurement period was
                     from Wednesday 5th October 2016 – Monday 10th October 2016. Weather for the
                     duration of the survey was fine. In particular, the evenings when the site was
                     operating were very still. The instrument was checked for calibration prior to and
                     post-measurement using a 94 dB acoustic signal at 1000 Hz, and drift in
                     calibration remained within ±0.5 dB.




www.roadpro.net.au                                           10 November 2016                                            Page 3 of 8