Herman du Preez conducting operational maintenance on a glass cooling tower experimental system that  evaluates alternative sources of cooling water to minimise fresh water intake. recycled for the 2010 financial year was  139,3 Mm$^{3}$, compared with 130,5 Mm$^{3}$  in 2009. Quantitative data on the water  usage at each of our separate business  units is provided in the operting reviews  in this report. In addition to managing water use inside  the factory fence, we recognise the  importance of playing a meaningful role  in supporting water resource management  in the broader catchments within which  we operate. Approximately 80% of the  group’s total water requirements comes  from the Vaal River system in South Africa,  where our demand represents about 4%  of the total off-take from this system.  Following a water supply shortfall that  was identified in this area in 2004, the  R2,7 billion Vaal River Eastern Sub-system  (VRESAP) pipeline project, in which Sasol  has a 40% share, was commissioned to  provide an additional reliable supply of  water from the Vaal Dam to our Secunda  operation and for use by the electricity  utility, Eskom. This year VRESAP was  declared operational by the Department  of Water Affairs, although the project is  not yet entirely completed.  The majority of our atmospheric e missions come from our two largest  facilities in South Africa, Sasolburg and  Secunda, both of which are situated in  priority areas as defined by the recently  promulgated National Environmental  Management: Air Quality Act. Signifi cant  investments will be required, and are  being investigated, to ensure compliance  with the minimum point source emission  standards and ambient air quality  standards required by the legislation.  We have made progress this year in  further reducing some of our atmospheric  emissions throughout the group, with  reductions achieved in our emissions of  volatile organic compounds (VOCs),  hydrogen sulphide and nitrogen oxides.  As noted elsewhere in this report, we have  also seen a reduction in the intensity  of our greenhouse gas emissions.  We appreciate the need for collective  efforts – across sectors and stakeholder  groups – in addressing the water challenge,  and have been very active in various  collaborative engagements (these are  reviewed in more detail in our separate  sustainable development report). In addition  to our usual annual reporting on Sasol’s  water footprint and risks, this year we also  participated voluntarily in the Carbon  Disclosure Project’s new water disclosure  questionnaire. A publicly available report  of the outcome of this initiative will be  made available later in 2010. Minimising our atmospheric  pollutants 80 SD F urther details on our atmospheric  emissions are provided in our online  sustainable development report. 