The governing authority of any county or municipal corporation and the directors or managers of any local authority or special district shall hold a public hearing before entering into a contract for the sale, lease, or management of a landfill or solid waste disposal facility owned by such county, municipal corporation, local authority, or special district. The party responsible for holding such a public hearing shall cause notice of the hearing to be posted at the site of the landfill or facility and to run in a newspaper of general circulation serving the county, municipal corporation, local authority, or special district not less than 30 nor more than 45 days prior to the date of the hearing.