Before an election may be held under § 504.152, a public hearing must be held in the authorizing municipality to inform the municipality’s residents of the cost and impact of the project or category of projects. At least 30 days before the date set for the hearing, notice of the date, time, place, and subject of the hearing must be published in a newspaper with general circulation in the municipality in which the project is located. The notice should be published on a weekly basis until the date of the hearing.