By ordinance or resolution, the County Commissioners of Cecil County may: provide for the control of air pollution, water pollution, and industrial waste coming from land in the county; provide for the appointment of inspectors to enforce an ordinance or a resolution adopted under item (1) of this subsection; and establish penalties for violations of an ordinance or a resolution adopted under item (1) of this subsection. Before adopting an ordinance or a resolution under this section, the County Commissioners of Cecil County shall: publish a summary of the proposed ordinance or resolution in one or more newspapers of general circulation in the county for at least 3 weeks that specifies the date for a public hearing; hold a public hearing; and give notice that copies of the proposed ordinance or resolution may be obtained on application to the clerk of the County Commissioners.