Addendum 62o removes reference to smoking spaces from Table 2 of outdoor air requirements, making it clear that the requirements in the table apply to only no-smoking spaces. It also adds a requirement for additional ventilation and/or air cleaning in spaces where smoking is permitted and prohibits recirculation or transfer of air from smoking to no-smoking areas. In adding the requirement for additional ventilation and/or air cleaning, it is noted that the specific amount of additional ventilation cannot be determined until cognizant health authorities have determined an acceptable level of environmental tobacco smoke (ETS).