<prompt> Translate the following text to EnglishKuanzia mwaka 2008 kwa dioksidi ya sulfuri na oksidi za nitrojeni na 2010 kwa zebaki, mmiliki au mwendeshaji wa kituo ambacho hakishikilia vyeti vinavyofunika uzalishaji wa kila mwaka wa vitengo vyake vinavyoathiriwa hutendewa kama kuwa na uzalishaji wa ziada.  <response>: Starting in 2008 for sulfur dioxide and nitrogen oxides and in 2010 for mercury, the owner or operator of a facility that fails to hold allowances covering the annual emissions of its affected units is treated as having excess emissions. 