MCU14/0056 - Attachment F - Acoustic Assessment

5 Commercial Noise Assessment
The environmental noise model was configured using the CadnaA Version 4.4.145 noise prediction
software (DataKustik, 2013) with calculations based on ISO 9613 ‘Acoustics — Attenuation of sound
during propagation outdoors’ algorithms.

The noise modelling takes into consideration the activity and equipment sound power levels of the
industrial operations to the southeast of the site and includes adjustments for attenuation from
geometric spreading, acoustic shielding from intervening ground topography, ground effect and
atmospheric absorption. The algorithm is inherently conservative, representing enhanced noise due
to moderate downwind conditions.

Topography, allotment layout and pad levels from the road traffic noise model (see Section 4) were
used in the environmental model.

Information regarding commercial operations was provided by VerveBD. The noise sources
identified and their estimated sound power levels (LWA) are presented in Table 5.1. Operational
hours are as per Section 1.1. Modelled traffic movement data is based on information obtained
from the traffic report prepared by Pekol Traffic and Transport ‘Proposed Mixed-Use Development
Myall Street, Cooroy Traffic Impact Assessment, 16 May 2014’. Table 5.2 provides the modelled
movements within a 15 minute period for daytime evening and night. These movements are based
on the highest peak hour traffic generation (2026 weekday evening) from the traffic report. The
traffic report also splits the site access for traffic 90 % and 10 % for Myall Street and Ferrells Road
respectively. Where nighttime operations are proposed the modelling has been based on the peak
evening values. Traffic report assumes that service station/fast food traffic would use the Myall
Street entry.

                                        Table 5.1: Commercial Premises Operations
Noise Sources                                              Operation                                 Est. LWA
Patron Vehicles                                                  see Table 5.2                       85 (moving)
Trucks (medium rigid)                                                                                102 (moving)

Trucks (heavy rigid)                                                                                 107 (moving), Maximum 110
Refrigerated Delivery Vehicle                                    7:00 am to 10:00 pm                 100 (stationary)
Carwash (vacuums)                                                7:00 am to 10:00 pm                 85
Carwash (wash bays)                                                                                  93
Service Station/Foodstore/Fast food mechanical Plant             Anytime                             98
(assumed to be 2 x refrigerated condensers, 2 x air              (located on the roof)
conditioning condensers)*
Note: * Refrigerated condensers are assumed to be Buffalo Trident LDV 8 fan and air conditioning condensers are assumed to be ACPAC
APC18.7L2-4 this will need to be confirmed during detailed design and mechanical plant mitigation reassessed.




0009-R1-01 VerveBD Mixed Use Cooroy Noise Report.docx                                                                                 17
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