The New Hope Group is committed to responsible environmental management and continuous improvement across all phases of our projects and operations.
We understand our noise management practices are an important area of interest for our near neighbours and local communities.
Without appropriate mitigation, noise can become disruptive to day-to-day life. In order to reduce and remain responsive to potential noise issues, the New Hope Group continuously monitors noise and vibration from our current operations and adapts our practices where required.
What is noise and how is it measured?
Noise consists of sounds that travel through the air as a series of waves. Different sounds have different characteristics which change based on their amplitude (loudness) and frequency (pitch). Different sources of noise can be distinguished by the character of the noise and by the level a noise exceeds the ambient, or background, level.
Noise is measured using a Sound Level Meter which measures the change in pressure associated with the sound waves and the frequency range. Noise is measured in decibels with an A-weighting adjustment applied to simulate the response of the human ear (dBA).
Can weather affect noise?
Because noise travels through the atmosphere (air), meteorological conditions (weather) can increase the level of noise. Temperature, wind speed and direction, humidity and cloud cover all have varying affects the level of noise.
Temperature inversions, where a layer of warm air sits above the cold air closer to the ground, can also increase the impacts of noise. There is a greater chance of hearing sound from a distant source when there is a temperature inversion. Temperature inversions occur at different heights above the earth’s surface and reflect sound waves back to the ground in varying degrees.
What is New Acland Mine doing to mitigate noise?
New Hope is committed to continuous improvement of our operations. As part of this commitment, we have implemented an extensive range of management measures that effectively address and reduce potential noise and vibration impacts.
These measures include:
- Forecasting and monitoring of weather conditions to understand how noise is likely to travel and plan our activities accordingly;
- Reducing noise by including/tailoring equipment e.g. mufflers installed on key mining equipment such as excavators, track dozers and loaders;
- Scheduling of activities to ensure evening and night time noise is kept at a minimum;
- Implementing a noise and vibration plan to guide day-to-day noise management practices;
- Using stockpiles and bunds as noise barriers for works where possible;
- Implementing a Trigger Action Response Plan (TARP) with realtime monitoring and adaptive management actions that involve immediately reducing, relocating or stopping identified noisier mining activities; and
- Ensuring our neighbours have access to an after-hours contact number for immediate on-site response to potential noise issues.
The majority of New Acland Mine's heavy machinery fleet have been outfitted with a sound attenutation package.
To keep our local communities and stakeholders informed about the Project’s environmental monitoring, New Hope will produce a monthly environmental monitoring report from the start of Project construction, including a summary of air quality, noise and vibration monitoring data. This report will be available online at www. aclandproject.com.au. If you would like further information regarding the Project’s noise and vibration management strategies, please contact us by:
- Calling the New Hope Community Information Centre on 07 4691 3445, or visiting us at Shop 90/88 Campbell Street, Oakey.
- Freecall 1800 882 142 – your call will be answered during business hours, or you can leave return call details outside of business hours
- Emailing firstname.lastname@example.org