Whenever the Harbor Master, in their judgement, finds that any dock or waterfront structure has become unsafe or dangerous so as to render the same or any portion thereof unsafe to life or property, they may ask the Director of Portland Permitting & Development to make a survey of the property.  If Director of Portland Permitting & Development declares the dock or waterfront structure to be unsafe to life or property, the Harbor Master may order that it be barricaded with proper fencing and danger signs posted by day and red lights by night that must remain intact until necessary repairs to it as the engineers report are practicable have been made. If the repairs are not practicable, the Harbor Master may order the removal of the dock or waterfront structure. If the owner, agent, or lessee of the property fails to comply promptly with the order of the Director of Portland Permitting & Development, the Harbor Master may prohibit the use of the unsafe portion of the dock or waterfront structure for any purpose whatsoever and may erect or cause to be erected the necessary barricade, signs, and lights. If the dock or waterfront structure is to be removed or razed, the Director of Portland Permitting & Development may, with the Harbor Master, remove or have removed any and all of the unsafe portions of the dock or waterfront structure and all of the associated expense must be paid by and recoverable from the owner, agent, or lessee of the dock or waterfront structure. Nothing in this Title prevents a condemnation as otherwise provided, nor will its provisions relieve the owner, agent, or lessee from the duty of periodically inspecting the property and promptly proceeding to make all repairs that are practicable.