Tenants in one Chicago apartment building could face fines or eviction if they’re caught smoking.

The management firm in charge of the 420 units at Kingsburg Plaza in the city’s River North neighborhood started transitioning to a smoke-free building at the beginning of the year. Kingsbury property supervisor Gary Lundemo tells the Chicago Tribune that, if it’s successful, the management company could expand the policy.

Kingsbury plans a $350 fine for one violation and eviction for a second violation.

The building opened three years ago, and the newspaper reports 15 percent of the tenants are smokers. A survey at the building found concern about second-hand smoke.