Upon receipt of the petition, the county government shall hold a public hearing, notice of which shall be published at least once in a newspaper published within the County. Said notice shall be published not more than 21 and at least 10 days before the public hearing and shall contain a description of the boundaries of the proposed garbage collection district and a statement that the county government will hold a hearing to consider whether or not to create the proposed disposal district. The notice shall also state that in the event the county government decides to create the proposed garbage disposal district, the county government will contract for garbage collection and assess the unit costs of garbage collection against each unit of real property used or intended for residential purposes within the garbage collection district.