(a) The district shall mail the notice required by § 375.115(c), Local Government Code, by certified or first class United States mail. The board shall determine the type of notice required based on whether adequate notice is provided by the method.
(b) If the district uses first class mail to provide the notice, the district must also publish the notice in a newspaper of general circulation in the district not later than the 20th day before the date of the event for which notice was provided.