Where stormwater or other type of surface water is to be discharged on or over other lands not owned by the owner of the property which is the subject of the development application, formal easements, duly executed and acknowledged by each and every owner affected, must be provided prior to any action of the Board. Where stormwater or other type of surface water is discharged into existing streams or waterways, provisions must be made for off-site drainage improvements. Where an application proposes to divert, relocate or otherwise encroach upon an existing stream or waterway, approval must be obtained from the proper State agency.