Appendices 6 SMP, 7 Bushfire & 8 Noise impact - Email 3 of 4 - MCU16/0153 & REC16/0041

There are 13 carparks located adjacent the western boundary of the carpark, these parks are typically used
by onsite staff and therefore likely to be occupied all day with minimal turn over. These parks are located
nearest the short term residential accommodation building and are shielded by an existing 2.0m high
acoustic fence. On this basis, the predicted noise levels from 13 vehicles arriving or departing these parks in
a hour period have been predicted and are presented in Table 7.3.

Table 7.3 Predicted Carpark Noise Levels

                                                                   Comply with Day or       Comply with Day or
                           Predicted Noise      Predicted Noise
        Source                                                     Evening Noise Limit      Evening Noise Limit
                          Level Leq,1hour dBA    Level Lmax dBA
                                                                    42 dBA LAeq,adj,1hour    52 dBA LA1,adj,1hour
  13 x car movements              37                  52                    Yes                     Yes

Delivery vehicles access to the IGA loading area is through the existing carpark. It has been assumed that
there would only be a limited number of delivery vehicles required to service the IGA on any given day and
only between the daytime and evening period hours of 7am and 10pm. The predicted noise levels from an
LRV delivery truck are presented in Table 7.4.

Table 7.4 Predicted Delivery Truck Noise Levels

                                                                   Comply with Day or       Comply with Day or
                           Predicted Noise      Predicted Noise
        Source                                                     Evening Noise Limit      Evening Noise Limit
                          Level Leq,1hour dBA    Level Lmax dBA
                                                                    42 dBA LAeq,adj,1hour    52 dBA LA1,adj,1hour
        1 x LRV                   47                  73                    No                      No

The predicted LRV noise levels exceed the nominated external noise criteria at the proposed short term
residential accommodation building. There are two options for reducing noise impacts from trucks at the
loading dock area onto the proposed unit building as follows:
    Installation of large acoustic barrier adjacent the western boundary of the IGA in the order of 5m
       high, or
    Incorporation of noise attenuation upgrades into the facade of the proposed unit building to achieve
       the internal noise criteria.
To achieve the internal noise level criterion of 45 dBA L1,adj,1hour a 28 dBA reduction is required across the
building facade. This can be achieved with an Rw 37 acoustically rated glazing system (which is likely to be
achieved with 12.76mm thick laminated glazing system).
To achieve the nominated internal noise criteria, will require external openings to be closed when these
habitable rooms are occupied. Therefore, an air‐conditioning/mechanical ventilation system that does not
degrade the internal acoustic environment or the sound isolation of the building envelope, and also meets
the ventilation requirements of the Building Code of Australia may need to be installed.

7.5          Predicted Mechanical Plant Noise Levels
The noise emissions from the IGA rooftop plant deck have been predicted at the nearest proposed sensitive
locations onsite.
The noise emissions from the rooftop plant deck have previously been measured by ASK Consulting. It is
understood that some items of plant would operate for 24 hours per day. The predicted noise level from
the mechanical plant deck at nearest proposed sensitive location of the unit building is 51 dBA Leq, the
nearest proposed sensitive house and Linea houses are at an equivalent distance and therefore an
equivalent noise level is expected.




8816R01V01.docx                                                                                                20