Appendix D Acoustic Report - 14-16 Mary Street, Noosaville - Bounce Hostels 15.6.2018

Visitor Accommodation, Noosaville                                                                                          1142R1-R0


                        LA10 The noise level exceed for 10% of the 15 minute interval. This is commonly
                        referred to as the average maximum noise level.
                        LA90 The noise level exceeded for 90% of the sample period. This noise level is
                        described as the average minimum background sound level (in the absence of
                        the source under consideration), or simply the background level
                        LAeq is the A-weighted equivalent continuous sound pressure level (basically the
                        average sound level). It is defined as the steady sound level that contains the
                        same amount of acoustical energy as a given time-varying sound.
                     When dealing with numerous days of statistical noise data a method is required to
                     determine the noise descriptors that are representative of a monitoring location for
                     a particular time of day. The method of statistical accumulation provides an
                     appropriate method of determining these noise descriptors.
                     This method accumulates each value for the days of monitoring and produces an
                     estimate of the “repeatable minimum” LA90 noise level over the daytime and night-
                     time measurement periods, as required by the Department of Environment and
                     Heritage Protection. In addition, the method produces mean or “average” levels
                     that are representative of the other descriptors that can be expected on a typical
                     day at each particular site.
3       Noise Criteria
        Acoustic Quality Objectives
                     The Noosa Plan (Part 11 – Noosaville Locality Plant, Division 17) provides the
                     following with respect to amenit:




                     The Environmental Protection (Noise) Policy 2008 is designed to achieve the
                     object of the Environmental Protection Act 1994. Relevant extracts are as follows:
                     “The environmental values to be enhanced or protected under this policy are—
                     …the qualities of the acoustic environment that are conducive to protecting the amenity of the
                     community”

                     and
                     “…To the extent that it is reasonable to do so, noise from an activity must not be—
                     …for noise that varies over time measured by LAeq,adj,T—more than 5dB(A) greater than the existing
                     acoustic environment measured by LA90,T”

                     In addition to the general aims and criteria for time-varying noise emissions,
                     Acoustic Qualify Objectives are specified for residences as shown in Table 2.




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