Appendix F- Acousitc Report · MCU21/0117.01

Cooroy Villas Pty Ltd
Environmental Traffic and Rail Noise Level Impact Assessment for Proposed Residential Unit Development,
54 Elm Street and 5 Pearl Street, Cooroy                                                                    Page 25 of 36



From Table 11, the following average ambient noise levels should be noted:

o   LAeq,T:
         o    daytime:    58.2, 58.6, 59.2, 58.8          Average = 58.7 dB(A);
         o    evening:    54.3, 53.6, 55.7, 56.6          Average = 55.1 dB(A);
         o    night-time: 54.8, 54.8, 55.1, 53.5          Average = 54.6 dB(A);

o   LA1,T:
         o    daytime:    66.6, 67.6, 66.6, 67.3          Average = 67.0 dB(A);
         o    evening:    65.4, 63.6, 65.0, 69.0          Average = 65.8 dB(A);
         o    night-time: 67.4, 67.8, 66.9, 66.5          Average = 67.2 dB(A);

o   LA10,T:
         o    daytime:    61.2, 61.5, 62.0, 61.6          Average = 61.6 dB(A);
         o    evening:    58.0, 57.3, 59.6, 58.9          Average = 58.5 dB(A);
         o    night-time: 56.2, 56.2, 57.4, 54.4          Average = 56.1 dB(A);

o   LA90,T:
         o    daytime:    49.0, 49.7, 51.8, 49.6          Average = 50.0 dB(A);
         o    evening:    38.1, 39.4, 42.2, 41.7          Average = 40.4 dB(A);
         o    night-time: 39.0, 38.8, 40.7, 35.9          Average = 38.6 dB(A).


CONCLUSIONS

It is proposed to develop the subject site at 54 Elm Street and 5 Pearl Street, Cooroy and construct a
total of twelve townhouses.

Based on the consultant’s site inspection the only potential noise impacts upon the subject site are
traffic noise from Elm Street and rail noise, both of which are State controlled.

Elm Street traffic noise, rail noise and general ambient noise levels were assessed from monitoring
location A, 54 Elm Street, Cooroy, adjacent to the northern boundary with the microphone elevated 1.6
metres and approximately 7.6 metres inside the Elm Street boundary, which is approximately 23 metres
from the centre of traffic on Elm Street and approximately 47 metres to the centre of the railway lines.
Refer Figure 1 for details.

For rail noise the LAeq,24H facade corrected limit of 65 dB(A) is complied with, as well as the single event
maximum rail noise limit, facade corrected, of 87 dB(A), for the closest proposed residential façade to
the railway line. The private external living area rail noise limits are also complied with, for all proposed
terraces. There are no level 2 private external living areas. Both of these rail noise limit compliances
are achieved with no additional noise control measures required. Rail noise impact to habitable rooms
does require that for some facades of some of the residential units the materials of construction must be
upgraded.

For traffic noise control to the private external living areas (Terraces on Level 1) and the Level 1
facades an acoustic barrier 2.0 metres high on the Elm Street boundary is required, with a 1.8 metre
high and 16 metre long return from the Elm Street boundary (54 Elm Street) east on the northern
boundary.

For traffic and rail noise control to habitable rooms on Level 1 and Level 2 Table 10 details the
applicable noise category in accordance with MP4.4. To comply with the habitable room noise criteria
of MP4.4 all external openings would need to be closed and, therefore, all habitable rooms which
require upgraded materials of construction for traffic and rail noise control must be mechanically
ventilated and/or air-conditioned. This air-conditioning/mechanical ventilation system must be designed
and installed such that it maintains the internal noise and, furthermore, complies with the ventilation
requirements of the Building Code of Australia.




David Moore & Associates Pty Ltd                                          Our reference: R23089.docx/D3819/Rev.0/17.01.24