Noise Report [As Published] · 132007.2398

RSL Care ==

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

Receptor 2018 Lio (18 nom, dB(A) 12 Predicted Noise Levels
93 67.3
94 57.2
95 55.6
96 53.5
C1 (Ground) 69.0
C2 (First) 71.4
A1 (Ground) 54.3
A1 (First) 56.7
A2 (ground) 71.0
A2 (first) 73.3
V1 54.9

 

 

1. Figure 2 provides a summary of the receptor locations referred to in this table.
2. Levels shown in bold represent exceedences of the appropriate noise criteria (57 dB(A) free field).

According to the results presented in Table 4.3, the DMR noise level criterion is exceeded by
up to 16.6 dB(A) at ILU Receptor 85. Results are summarised as follows:

« atotal of 71 out of 101 receptors exceed DMR criterion;
= non-compliance is predicted at 67 ILU receptors; and

* non-compliance is predicted at the proposed Apartment 2 (ground and first floor) and the
Aged Care Facility (ground and first floor).

Figure 3 presents ground floor open space noise contours for the proposed development. As
can be seen from Figure 3, noise levels at 1.5 m above ground are predicted to exceed the
60 dB(A) noise criterion for a quarter of the site. Limited compliant open space area is
predicted for the row of housing closest to the Cooroy Connection Road. Approximately two-
thirds of the courtyard space at the Aged Care Facility is predicted to comply.

Mitigation options for reducing noise levels are discussed in the following sections.

4.6 MITIGATION OPTIONS

4.6.1 Overview

Given the exceedance in the DMR criteria, appropriate mitigation measures should be
adopted to establish an appropriate acoustic environment for aged care purposes. The
following section discusses the effectiveness of an acoustic barrier and the required
construction materials for achieving internal noise criteria.

4.6.2 Acoustic Barrier

Further noise modelling has been completed to predict the effectiveness of a 2.5 m acoustic
barrier located along the site boundary, fronting the Cooroy Connection Road (see Figure 4).
The acoustic barrier is assumed to be constructed of a material with a mass density of
12 kg/m? with no air gaps.

 

AIR NOISE ENVIRONMENT PTY LTD
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