We are working on a 5-story residential project that is being certified v4 BD+C. The dwelling units are naturally ventilated and there is a continuous 30 cfm exhaust from the toilet and continuous 100 cfm Dryer exhaust from each unit. (Total 130 cfm exhaust). There is no separate exhaust for the kitchen, but the total exhaust cfm is high enough to meet the requirements of 62.1-2010 Table 6-4 for the toilet and kitchen combined. Does the kitchen also need to have an exhaust hood, or is it sufficient to exhaust it through the toilet/dryer exhaust? This seems to meet the intent of 62.1-2010 since the two spaces are part of the same zone/dwelling unit.

Any insights or experience on this would be appreciated.