(1) At bulk oil wharves and small boat marine oil service
stations, as designated by the Commission.
(2) When a truck operator or railroad company performs
the service of loading or unloading freight and absorbs the cost of such service in the
rate for transportation and makes no extra charge for loading or unloading.
(3) When, in the discretion of the Commission or the Port
Manager, the public interest or existing conditions may warrant suspension of the
requirement that handlers secure the necessary cargo handling permits.