RFI - Appendix 4 - accoustic report · MCU19/0117

Mark Bain Constructions Pty Ltd
Environmental Noise Level Impact Assessment for Proposed Wave Lagoon, 500/90 Beach Road,
Noosa North Shore                                                                                      Page 9 of 16




NOISE CONTROL

To be able to operate the wave lagoon from 0500 to 2200 hours daily, based on the source noise data
available to the consultant at the time of preparing this report, all plant and equipment must be located
inside a concrete structure (or equivalent) with a minimum Rw 50.

Once all of the plant and equipment has been selected, the actual building location, design and
materials of construction defined, together with manufacturers’ source noise data for the actual
equipment to be installed, an acoustic consultant must be appointed to re-calculate noise level impact.
If any of the noise limits are exceeded, appropriate noise control measures must be defined.


CONCLUSIONS

It is proposed to establish a private wave lagoon at 500/90 Beach Road, Noosa North Shore (Lot 500
on SP 215779), in the south-east corner of this property. Potential noise sources associates with this
wave lagoon, which will be approximately 0.4 Ha in area, are the blowers used to generate the waves
and people noise. There will also be pumps used in association with the wave lagoon, for the purpose
of water transfer and water filtration/treatment.

The noise of the blowers and pumps is steady state whilst the noise of people is time varying.

To determine the existing acoustic environment a 7-day ambient noise assessment was conducted
from the subject site, from adjacent to one of the closest adjoining residences. Typical source noise
data for the pumps and people is already held by the consultant, whilst wave lagoon blower noise was
obtained from an acoustic report prepared for a similar scale wave lagoon at Palm Springs, California.

Whilst it is most likely that the wave lagoon will only be used during daylight hours, this could be as
early as 0500 hours in the summer. There is also a small likelihood that the wave lagoon could be
used during the evening, up to 2200 hours. It has been assumed that the generation of waves could
occur at any time from 0500 hours to 2200 hours.

For the steady state noise sources these all comply (individually and combined) with the default noise
standards and the acoustic quality objectives. This is for the noise sources applied in this report and
assuming that these steady state noise sources are located within a concrete structure with a
minimum Rw 50. Once the actual noise sources are determined, and their associated noise levels
available, an acoustic consultant must re-calculate noise impact. If any of the noise limits are still
exceeded then noise control measures must be defined.

For the time varying noise source – people – this complies with the acoustic quality objectives for the
proposed hours of operation (0500 to 2200 hours daily), with no additional noise control measures
required.


RECOMMENDATION

It is recommended that, from an environmental noise perspective, the proposed wave lagoon be
approved, with no additional noise control measures required.




David Moore & Associates Pty Ltd                                       Our reference: R19099/D3453/Rev.0/21.01.2020