Cause of Impact
Potential air quality impacts from the construction works would be mainly caused by construction dust, which would be generated from activities such as: ground excavation, wind erosion, transportation/ handling of materials, etc.
No operational air quality impact on ASRs is envisaged for the area.
In order to minimize air dust levels during the construction, the following remedies will be applied:
- Regular watering to reduce dust emissions from exposed site surfaces and unpaved roads, particularly during dry weather;
- Open stockpiles shall be avoided or covered. Where possible, prevent placing dusty material storage piles near ASRs;
- Establishment and use of vehicle wheel and body washing facilities at the exit points of the site;
- Cement or dry PFA delivered in bulk should be stored in a closed silo fitted with an audible high level alarm which is interlocked with the material filling line and no overfilling is allowed; and
- Loading, unloading, transfer, handling or storage of bulk cement or dry PFA should be carried out in a totally enclosed system or facility, and any vent or exhaust should be fitted with an effective fabric filter or equivalent air pollution control system.
With the implementation of mitigation measures in the Air Pollution Control (Construction Dust) Regulation, proposed dust suppression measures and good site practices, no adverse dust impacts on the ASRs would be anticipated.