What are the objectives for chlorine and ammonia?
The risk management objective for chlorine is to achieve and maintain a concentration of total residual chlorine that is less than or equal to 0.02 milligrams per litre (mg/L) in the effluent released to surface water by December 15, 2009. The objectives for ammonia are twofold: 1) to achieve and maintain a concentration of ammonia in the effluent that is not acutely lethal to fish due to ammonia and 2) to achieve and maintain a concentration of ammonia in the effluent that will ensure the protection of freshwater life.
