Sources of Dust



The sources of dust here are predominantly from roads and open areas on the site. The dust is generated from the movements of trucks, forklifts, earthmoving machinery and light vehicles.  Typically, the methodologies for limiting fallout dust levels include watering, using dust binding agents, enforcing speed limits and engineering controls.  Training of workers are also able to effectively control dust levels, but this must include the training of all subcontractors that are doing the work on the site.


These are temporary and typically contain a fines component which can become airborne in the presence of wind.  Typically, the methodologies for attenuation include watering, using dust binding agents and covering the stock piles with hessian.


This is dust generated during the construction of residential homes, apartments and other concrete structures.  Typically, the methodologies for mitigation include training of contractors to limit dust during the various small construction activities.  Wetting down of exposed dust sources and covering of exposed dust sources.  Grinding and cutting generates excessive dust levels and localised engineering controls should be implemented to prevent this dust from being liberated into the environment.

Putting sand down on concrete or brick road surfaces for protection and sealing purposes should be limited and dust must be prevented from these road surfaces.

The use of shade cloth barriers to break up the wind speed and to allow dust to settle should be implemented downwind as per the prevailing wind during the months of 1 September to 30 April.  These months have a prevailing wind direction from the south east.  The shade cloth should be 2.2meters high and supported by sturdy wooden poles.  The cloth should be a low-density shade cloth that allows the wind to pass through the cloth, rather than to block the flow of the wind.   The method of attaching the cloth to the fence should limit the movement of the cloth so that the cloth lasts longer and should not have any sharp edges that can damage the cloth.  Repairs to shade cloth should be included in the planned maintenance.


The above was taken from a generic report brought out by DustWatch CC

Sources of dust

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