Noise Report [As Published] · 132007.2398

RSL Care ==

Proposed RSL Retirement Village, Cooroy — Road and Rail Noise Assessment —

 

7 CONCLUSIONS AND RECOMMENDATIONS

7.1 ROAD TRAFFIC NOISE

The modelling of road traffic noise for a 10 year horizon from construction of the proposed
residential subdivision development has been completed. According to the modelling results,
non-compliance is predicted for a significant proportion of the development site at ground
floor and first floor levels.

Compliance with the noise criteria is likely to be achieved provided the following mitigation
options are implemented:

» €a2.5 metre acoustic barrier is constructed at the boundary of the development site along
the Cooroy Connection Road (see Figure 4). The acoustic barrier should have a mass
density of 12 kg/m? and be continuous with no air gaps;

« buildings are to be constructed of materials providing acoustic attenuation similar to those
identified on Table 4.6. It is important to note that actual construction materials can not be
confirmed until detailed design plans are finalised for the development;

+ air conditioning is provided for all areas of the residential buildings requiring Construction
Category 2 or 3; and

* a detailed acoustic assessment prepared by a qualified acoustic consultant, detailing
building materials, construction methods, and design is required for buildings requiring
Construction Category 3.

In addition to this, it is recommended that private open spaces at units situated nearest to the
Cooroy Connection Road be located on the front side of the buildings (ie, away from the
facade facing the Cooroy Connection Road). Additional shielding in the form of architectural
acoustic barriers to provide additional acoustic shielding to open spaces may also be
required.

For first floor balconies facing the Cooroy Connection, located at Apartment 2, consideration
should be given to the provision of acoustic screens during the detailed design phase of the
project.

7.2 RAIL NOISE

Impacts of noise associated with the Cooroy Railway Corridor have been investigated by the
assessment of unattended and attended noise monitoring data completed at the proposed
development site. Based on the noise monitoring results, it is predicted that train noise levels
passing by the proposed retirement village will exceed the relevant criterion by up to
10.5 dB(A).

Compliance with the noise criteria is likely to be achieved provided the following mitigation
options are implemented:

 

AIR NOISE ENVIRONMENT PTY LTD
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