We recognise that noise generated from mine related activities is a potential impact on nearby residents. To reduce the level of impact the operation has on noise levels, we have implemented a number of design and operational controls to manage noise generation.
Design controls to manage noise generation:
- The Coal Handling and Preparation Plant (CHPP), coal stockpiles and associated infrastructure are located near the eastern site boundary to maximise natural topographic shielding and reduce noise impacts on surrounding areas;
- The CHPP and crushers are enclosed and conveyors are shielded;
- The construction of a noise bund to the south of the operation;
- The rail loop is positioned to maximise natural topographic shielding and implements four metre high noise barrier on sections of the track; and
- Noise impacts have been considered during the mine planning process.
Operational controls to manage noise generation:
- Daily noise risk model based on forecast meteorological conditions allowing for any potential offsite noise impacts to be mitigated for the oncoming shifts;
- Controlling mine noise at the source through the use of primary mining equipment with appropriate sound attenuation fitted;
- Maintaining mining equipment in a proper and efficient manner;
- Restricting operations on outer dump faces or elevated dumps in sensitive areas at night during adverse weather conditions;
- Ensuring trucks operating during the night time are restricted to operational areas below the maximum elevation of the overburden emplacement areas;
- Using real-time offsite noise monitors that incorporate automatic alarms so that proactive controls can be implemented by mining supervisors;
- Silent horns on primary loading units;
- Broadband reversing alarms on mine equipment, light vehicles and contract equipment/pit vehicles where practicable;
- Rubber tyred dozers used on mine dumps at night at higher elevations where possible;
- Conducting noise management training with relevant personnel; and
- Undertaking the process of change management when operations change, including mining in new areas or when mining equipment changes.
Noise monitoring at Mangoola Coal is undertaken in accordance with the approved Mangoola Coal Noise Management Plan. This system is designed to comply with Environment Protection Licence (EPL) No, 12894 and the noise control conditions in the Mangoola Coal development approval. Noise monitoring includes the following:
- Monthly attended monitoring during the night period at eight monitoring locations to represent the privately-owned affected residences; and
- Real-time noise monitoring at five permanent monitoring locations with an additional three mobile units which are relocated as per needs basis.