(1) The authority may adopt and promulgate all reasonable rules and regulations regarding the specifications and standards relating to the construction, operation and maintenance of any facility owned or operated by the authority to comply with all federal and state environmental laws and regulations.

(2) The authority may determine if the mandatory flow of municipal solid waste to its facility is necessary to ensure the viability of the facility. Prior to the adoption of any ordinance declaring the necessity of requiring mandatory flow of municipal solid waste, the authority shall demonstrate in writing that it has considered the utilization of any municipal solid waste management facility in existence on April 12, 1991, which meets the proposed or final state and federal regulations. The authority must show that its decision not to use the existing facility is based on the fact that such facility is environmentally unsound, costs for use of such facility is inconsistent with comparable facilities within the State of Mississippi, or the use of such facility is not consistent with the local nonhazardous solid waste management plan. If the authority adopts a resolution declaring the necessity of requiring mandatory flow of municipal solid waste to the facilities by any person located or residing within the territorial boundaries of a member of the authority or a public agency or person which contracts for use or services of the facilities owned or operated by the authority, then each member shall comply by adopting a resolution or ordinance to require such mandatory flow.

(3) All such rules and regulations prescribed by the authority shall not conflict with or suspend any rules or regulations prescribed by general statute or the Department of Environmental Quality.

(4) Any county or municipality participating in a regional authority is authorized to require by ordinance that all municipal solid waste generated within the designated geographic area that is placed in the waste stream be collected, transported, stored and managed at a designated permitted municipal solid waste management facility or facilities serving such area. The ordinance shall not be construed to prohibit the source separation of materials for purposes of recycling from municipal solid waste prior to collection of such municipal solid waste for management, or prohibit collectors of municipal solid waste from recycling materials or limit access to such materials as an incident to collection of such municipal solid waste; provided such prohibitions do not authorize the construction and operation of a resource recovery facility unless specifically provided for pursuant to an approved local nonhazardous solid waste management plan.

(5) Prior to April 12, 1991, any county or municipality which has issued bonds for a project as defined in Section 17-17-103, Mississippi Code of 1972, and is not a member of a regional authority may continue and is empowered to assign collection territories, to regulate the collection of municipal solid wastes and to require the disposal of municipal solid wastes at a project to provide the volume of municipal solid wastes necessary to pay the operating costs of a project, or the principal and interest on revenue bonds issued for such project, or both such operating costs and bonds. When such county or municipality becomes a member of a regional authority, the county or municipality may exercise only those mandatory flow powers consistent with the regional authority plan.