A person who, pursuant to authority conferred by lease, contract, agreement, license or easement with the Department, obtains an interest in Department property, or performs an activity within the SWP right-of-way, or is authorized to use the SWP right-of-way, is not required to separately obtain an encroachment permit, but only with regard to the interest, activity, or use under that lease, contract, agreement, license, or easement.