18.—(1) Prior to the installation of any permanent lighting for the authorised development, a written scheme for the management and mitigation of artificial light emissions for that part of the authorised development must be submitted to and approved by the relevant planning authority. The lighting strategy submitted for approval must be substantially in accordance with the outline lighting strategy.
(2) The written scheme for the management and mitigation of artificial light emissions must be implemented as approved under sub-paragraph (1).