Why does Minnesota regulate the air in enclosed sports arenas?
Prior to 1973 there was an incident where elevated concentrations of carbon monoxide and nitrogen dioxide emitted from a resurfacing machine caused illness in spectators and hockey players in a Minnesota ice arena. The state legislature recognized the importance of having safe air to breathe in ice arenas and other enclosed sports arenas and has given the Minnesota Department of Health (MDH) the responsibility of making rules to ensure arena air quality. Since that time, other states have also passed rules to regulate air in ice arenas.
