Table 4 Annual mean levels for five air pollutants measured at Embalenhle (Sasol) for 2008–2019
Pollutant | NAAQS limit | 2005 | 2006 | 2007 | 2008 | 2009 |
PM2.5 | 20 μg/m3 | – | – | – | – | – |
PM10 | 40 μg/m3 | – | – | – | – | – |
SO2 | 19 ppb | – | – | – | – | – |
NO2 | 21 ppb | – | – | – | – | – |
Pollutant | NAAQS limit | 2010 | 2011 | 2012 | 2013 | 2014 |
PM2.5 | 20 μg/m3 | – | – | – | – | – |
PM10 | 40 μg/m3 | – | – | – | – | – |
SO2 | 19 ppb | – | – | – | – | – |
NO2 | 21 ppb | – | – | – | – | – |
Pollutant | NAAQS limit | 2015 | 2016 | 2017 | 2018 | 2019 |
PM2.5 | 20 μg/m3 | – | 20 | 21 | – | – |
PM10 | 40 μg/m3 | – | 50 | 53 | – | – |
SO2 | 19 ppb | – | 7 | 6 | – | – |
NO2 | 21 ppb | – | – | 12 | – | – |