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A spatial multi-risk hazard assessment and vulnerability study of ...

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Environment/Air<br />

Pollution South Africa’s atmosphere is generally very stable, with<br />

Environment/Vegetation<br />

frequent surface <strong>and</strong> elevated inversions, particularly in<br />

winter. This means there are periods when there is little<br />

or no wind <strong>and</strong> air pollutants are trapped <strong>and</strong> so<br />

accumulate instead <strong>of</strong> being blown away.<br />

The burning <strong>of</strong> fossil fuels in industry, for power<br />

generation <strong>and</strong> by less developed communities as a<br />

primary energy source, causes pollution problems<br />

especially in densely populated areas.<br />

The large concentrations <strong>of</strong> mines in Madibeng have<br />

been identified as pollutants <strong>of</strong> the environment;<br />

unfortunately no data could be gathered to map the<br />

extent or impact <strong>of</strong> pollution. Hernic Ferrochrome near<br />

Brits has been involved in chrome 6 pollution <strong>and</strong> it is<br />

clear that mines contribute to air pollution in the area.<br />

Agricultural practices Over utilisation <strong>of</strong> natural resources puts extreme<br />

Environment/Water<br />

Pollution <strong>and</strong> disappearing<br />

wetl<strong>and</strong>s<br />

Environment/Soil<br />

pressure on the environment, especially in areas that are<br />

prone to fluctuations in rainfall. This could lead to<br />

environmental degradation.<br />

Water is the most valuable resource in the whole <strong>of</strong><br />

South Africa. Madibeng has been vulnerable to water<br />

shortages in the past <strong>and</strong> it is therefore very important to<br />

protect the rivers, dams <strong>and</strong> wetl<strong>and</strong>s in the area.<br />

The Hernic Ferrochrome plant was responsible for a<br />

chrome 6 spill <strong>and</strong> it is also suspected that other mines,<br />

informal settlements <strong>and</strong> agriculture are responsible for<br />

the pollution <strong>of</strong> rivers in Madibeng.<br />

Degradation L<strong>and</strong> degradation is a <strong>hazard</strong> in areas where communities<br />

are dependent on their natural environment for a living,<br />

especially in densely populated areas such as the former<br />

No<br />

3-27<br />

Yes<br />

No<br />

Yes

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