Attach H- Acoustic report

4 Commercial Noise Assessment
The environmental noise model was configured using the CadnaA Version 4.5.151 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.

Ground absorption is set to G = 0 for roads (internal and external) and paved areas (e.g. hardstand,
carparks, etc.) the remainder of the model domain is set to G = 1. Buildings presented in the site
plan (see Figure 1.2) are included within the model. In addition, surrounding residential buildings
are included within the model with the height taken from site visits and aerial photography.

Topographical information for the site was provided by Noosa Shire Council (NSC), development
layout provided by VerveBD (Drawing: 14056 DA06 Rev C dated 8/01/2015, DA02 Rev D 8/01/2015).
Figure 4.1 presents the existing topography of the site and the extents of the model domain.




                                        Figure 4.1: Topography Site & Surrounds

0101-R1-01 VerveBD Garnet Street, Cooroy Noise Report.docx                                             10
Report
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