Most inspections are done on the effluent released by the camps on these sites, municipal effluent, in a sense. Other inspections deal with the treatment process, for example the cooling water retention ponds used for oil separation. There is a cooling process for this water which flows directly into the Athabasca River. Environment Canada also does ongoing monitoring and inspections. Those are the two main categories of inspections.
On March 12th, 2009. See this statement in context.