Compiled Reference Document - MCU25/0020 (As Published)

ADG Consulting Pty Ltd

 

7 Noise & odour management
7.1 Responsibility

The Project Manager is responsible for ensuring the appropriate management of noise and odour during
dewatering operations.

7.2. Operational policy
To minimise noise and odour emissions generated from the site during dewatering.
7.3 Performance criteria

The appropriate criteria to measure the performance of dewatering management at the site are provided
below.

1. No noise or odour related complaints received from neighbouring residents or the community.
2. No degradation of air quality due to fumes or odours emanating from the dewatering process.

7.4 Implementation strategy
Noise and odour emissions will be managed as described in the following sections.
7.4.1 Noise

All dewatering equipment must be operated appropriately and maintained in good working order. All
dewatering systems and plant must be fitted with the appropriate noise reduction equipment to comply
with the performance criteria. Non-complying dewatering plant will be replaced or repaired as necessary.

It is proposed to employ noise mitigation strategies including use of electric pumps and dewatering
systems rather than diesel powered equipment. Noise attenuation blankets and/or screens (and/or other
similar noise attenuation measures) must be installed around noise generating dewatering pumps and
equipment where practicable, if required. Noise monitoring equipment (unattended) will be installed by
the site manager prior to commencement and monitored for the duration of dewatering, if required.

7.4.2 Odour

All dewatering plant must be fitted with the appropriate emission reduction devices. Where practicable,
all dewatering plant will be sealed to prevent the release of odours to the atmosphere. Fine mist odour
control sprays may be applied to reduce offensive odours if complaints are received from neighbouring
residents.

7.5 Monitoring

An inspection of the site and dewatering equipment shall be undertaken daily by the Site Manager to
identify the following:

— Excessive noise being generated by the dewatering systems and plant; and

— Strong or offensive odours being generated by the dewatering equipment and/or extracted
groundwater.

If required by Council, noise monitoring equipment (unattended, continuous logging) may need to be
installed by the Site Manager prior to commencement and monitored for the duration of dewatering.
The Environmental Protection (Noise) Policy 2019 (EPP(Noise)) identifies specific acoustic quality
objectives (noise criteria) to assist in preventing significant impacts on noise sensitive receptors and as a
guide to long-term acoustic quality for sensitive receptors. The primary EPP(Noise) criteria relevant to
this investigation is outside a dwelling (i.e. adjacent dwellings), which should not have noise at levels in
the daytime or evenings greater than 50dB(A) LAeq, adj,1hr. This means that noise levels in the receiving
environment outside of nearby dwellings (i.e. on balconies) should not exceed an equivalent sound
energy as would be received from a one hour continuous sound of 50 decibels on the A-weighted scale
(adjusted for tonal character perceptible by the human ear).

 

ADG1786.25 Dewatering Management Plan_Rev1_07.10.25 Page 18