Supervision of solid waste collection activities, facilities, disposal operations

4. The department shall have power to supervise solid waste collection activities, solid waste facilities and solid waste disposal operations, and shall in the exercise of this supervision require the registration of all solid waste collection activities, solid waste facilities and solid waste disposal operations in this State. The department may exempt from the requirement of registration any class of solid waste collection activity, solid waste facility or solid waste disposal operation if the department determines that the exemption is necessitated by the public interest. b. The department in reviewing the registration statement for a new solid waste collection activity, solid waste facility or disposal operation and in determining the conditions under which it may be approved, shall not approve the registration of any new solid waste collection activity, solid waste facility or disposal operation that does not conform to the district solid waste management plan of the district in which the proposed solid waste collection activity, solid waste facility or disposal operation is to be located, as the relevant district plan shall have been approved by the department as hereinafter provided.