Corporate Responsibility Report 2007

Air Quality Act 39 of 2004

National Environment Management: Air Quality Act 39 of 2004

The objectives of the Act are to:

  • protect the environment by providing reasonable measures for –
    • the protection and enhancement of the quality of air in the Republic;
    • the prevention of air pollution and ecological degradation; and
    • securing ecologically sustainable development while promoting justifiable economic and social development; and
  • generally to give effect to section 24 (b) of the Constitution in order to enhance the quality of ambient air for the sake of securing an environment that is not harmful to the health and well-being of people.

According to the ambient air quality standards set by the Act, ambient concentrations of sulphur dioxide (SO2) emissions may not exceed:

  • a 10-minute average instant peak of 0.191 parts per million measured at 25°C and normal atmospheric pressure;
  • an instant peak of 500 micrograms per cubic metre (g/m3) measured at 25°C and normal atmospheric pressure;
  • a 24-hour average of 0.048 parts per million or 125g/m3 measured at 25°C and normal atmospheric pressure; or
  • an annual average of 0.019 parts per million or 50g/m3 measured at 25°C and normal atmospheric pressure.

According to the ambient air quality standards set by the Act, ambient concentrations of particulate matter with a particle size of less than 10 microns () in size may not exceed:

  • a 24-hour average of 180 micrograms per cubic metre (g/m3) and the 24-hour limit may not be exceeded more than three times in one year; or
  • an annual average of 60g/m3.

Impala Platinum Holdings Limited – Corporate Responsibility Report 2007