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- Volume 16, Issue 1, 2007
Clean Air Journal = Tydskrif vir Skoon Lug - Volume 16, Issue 1, 2007
Volume 16, Issue 1, 2007
Author Tony StottSource: Clean Air Journal = Tydskrif vir Skoon Lug 16, pp 2 –4 (2007)More Less
Two years ago at the AGM in 2004, when I took over the position as President of NACA, I made the comment that 2005 and 2006 would present numerous opportunities, amongst which would be those provided by the challenges of new air quality legislation as well as those of climate change. The challenges have certainly been there. Opportunities have arisen, and it is my contention that NACA has risen to a number of these opportunities.
Source: Clean Air Journal = Tydskrif vir Skoon Lug 16, pp 5 –15 (2007)More Less
Air quality management in South Africa has undergone drastic changes since the implementation of the National Environmental: Air Quality Act (Act 39 of 2004). The new Act shifts the emphasis fiom point-source control to proactively protecting the receiving environment. In keeping with the new approach, it is a legal requirement that Municipalities must compile and implement air quality management plans (AQMPs) as part of their Integrated Development Plans (IDPs). Although an explicit requirement of the Act, no clear guidelines exist for regulating bodies, includmg Municipalities, regarding the contents of such plans.
The main findings of the study revealed a lack of air quality management infrastructure and a shortage of experienced, qualified staff to develop, implement and maintain air quality management plans. Financial constraints were also identified as a big concern to manage air quality. Although it is an explicit requirement by the Act, very few municipalities have approved AQMPs, nor appointed air quality officers. A generic air quality management plan framework (AQMPF) for all tiers of govenunent was developed to assist regulating authorities when compiling air quality management plans. Although generic, this AQMPF was found to be applicable to Municipalities as well. Due to the fact that a lack of training has been identified as a critical gap in the successful implementation and maintenance of an AQMP, this study makes a significant contribution to the identification of generic training outcomes.
Author O.J. PretoriusSource: Clean Air Journal = Tydskrif vir Skoon Lug 16, pp 18 –24 (2007)More Less
Sasol Synfuels is a petrochemical industry producing fuels and chemicals from coal and situated in the Gert Sibande district municipality of Mpumdanga.
These activities result in pollutants being released into the atmosphere. It was required to determine if reducing the radius of a 5.2 km pollution circle, measured from the centre of the plant, by 400m, to allow further residential development, will expose residents to an unacceptable ambient benzene concentration. A detailed study was implemented whereby the ambient air was sampled and analysised during a two seasonal period to determine how the benzene emissions released from the factory will impact on future residents within this 400m area. Meteorological measurements were also used to monitor atmospheric conditions.
The results showed that the yearly average of ambient benzene concentrations for Secunda was 0.41 ppb and 0.64 ppb for eMbalenhle which was below the South African standard, but there were frequent sampling periods when the short-term concentrations exceeded the annual standard, occurring mostly during the night, when the majority of residents were at home.
From the results obtained, the 5.2 km pollution circle should therefore be maintained to ensure this risk of exposure to people is kept to a minimum.
Source: Clean Air Journal = Tydskrif vir Skoon Lug 16, pp 25 –30 (2007)More Less
A previous study by Muller et al. (2003) investigated NOx, benzene, toluene, ethylbenzene and xylene levels in households in the densely settled informal settlement of Cato Crest located within the Durban Metropolitan area. A Health Risk Assessment based on the United States EPA approach showed that the residents of Cato Crest experienced significant health risks as a result of exposure to these pollutants largely as a result of kerosene usage in their homes. Specifically, the study which was conducted in September 2000 in 14 households, showed that exposure to NOx over a 24-hour period indicated a potential health risk in all the households, that benzene poses a health risk in 50% of the households, whereas there is no health risk associated with exposure to toluene. A follow-up study was conducted in July 2006 targeting similar households and pollutants to investigate whether comparable results were found in a typical winter period, when air quality is generally expected to deteriorate.