The Tri-County Health Department has formally issued a coronavirus mask order for Adams, Arapahoe and Douglas counties that will go into effect July 24. Individual communities can opt out of the mandate, as Douglas County says it plans to do after an uproar over the order. The Tri-County Health Department directive will require people to wear facial coverings when they’re in public outdoors and can’t maintain 6 feet of distancing as well as indoors in places where members of the public can enter.