EQp2: Environmental Tobacco Smoke (ETS) Control
The intent of this credit is to help mitigate the exposure of tobacco smoke to the occupants of the building. There are a few options, all revolving around keeping the smoke and smokers isolated or completely away from the building.
Option 1 is to limit smoking to 25 feet away from the building. Option 2 is to have some designated smoking areas that are specially designed to help keep the smoke from flowing to different areas of the building. Option 3 (for residential buildings only) is to prohibit smoking in residential buildings and create more sealed rooms to prevent smoke from flowing out into the hallways.
Obviously, the easiest and cheapest way to achieve this credit would be to go with option 1 and simply prohibit smoking in your building.