MCU14/0056 Acoustic report Att H - Information response

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 Pekol Traffic and Transport. Table 5.2 provides the modelled movements within a 15 minute
period for daytime evening and night.

                                        Table 5.1: Commercial Premises Operations
Noise Sources                                              Operation                                 Est. LWA
Patron Vehicles                                                  see Table 5.2                       85 (moving), 92 (maximum)
Trucks (medium rigid)                                                                                102 (moving)
                                                                                                     99 (moving) reversing beeper
                                                                                                     includes tonal adjustment of
                                                                                                     + 5 dB.
Trucks (heavy rigid)                                                                                 107 (moving)
Refrigerated Delivery Vehicle                                    7:00 am to 10:00 pm                 100 (stationary)
Carwash (vacuums)                                                7:00 am to 10:00 pm                 85 (stationary)
Carwash (wash bays)                                                                                  93 (stationary)
Service Station/Fast food mechanical Plant (assumed to           Anytime                             85 (stationary)
be 2 x air conditioning condensers)*                             (located on the roof)
Note: * 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.


                                      Table 5.2: Modelled Hourly Traffic Movements
                                                                                                Two-way Traffic Movement
                    Location                                  Vehicle Type
                                                                                      Day         Evening    Night
                  Tourist Park                                 Light                   24           13         13
                  Self Storage                                 Light                    8            2          0
                   Fuel sales                                  Light                  184           99        102
                   Fast food                                   Light                  123           66         68
                   Car wash                                    Light                   18           10          0
                                                        MRV (Refrigerated)              1            1          0
                Delivery Dock
                                                        HRV (Fuel delivery)             1            1          1
Note: PTT advised that two-way traffic movements include a separate movement for both incoming and outgoing traffic.
15 minute traffic is taken to be hourly values divided by four (4) with the exception of MRV and HRV.


0009-R2-01 VerveBD Mixed Use Cooroy Noise Report.docx                                                                               21
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