Why not just enforce the current policy of 25 feet?
The current perimeter policy at DU does not address the risk of secondhand smoke exposure. Because there is no safe level of exposure to secondhand smoke, people who choose to smoke on campus negatively impact the health of all people around them. One out of every two DU students report noticing secondhand smoke exposure on our campus. Outdoor levels of secondhand smoke are equally as harmful as indoor levels and even hurricane-force winds cannot eliminate the risk of secondhand smoke outside. 54 Brief exposure to smoke, as you’re walking into a building, can cause or exacerbate cancer, heart disease, asthma, allergies, and bronchitis.