<prompt> Translate the following text to EnglishVifaa vya kutolea nje dioksidi ya sulfuri, oksidi za nitrojeni na oksidi ya zebaki lazima viondolewe kupitia stack au duct na lazima vikidhi mahitaji ya ufuatiliaji na kuripoti kwa programu hizo za biashara, isipokuwa kila kitengo lazima kifuatwe kando.  <response>: The units must vent all their sulfur dioxide, nitrogen oxides, and mercury emissions only through a stack or duct and must meet the monitoring and reporting requirements for those trading programs, except that each unit must be separately monitored. 