(a) Plans of storage tank to be filed. When sirup or molasses is imported in bulk in tank vessels and is to be pumped or discharged into storage tanks, before the discharging is permitted there shall be filed with the port director a certified copy of the plans and gauge table of the storage tank showing all inlets and outlets and stating accurately the capacity in liters per centimeter of height of the tank from an indicated starting point.

(b) Settling before gauging. After the discharge is completed, all inlets to the tank shall be carefully sealed and the sirup or molasses left undisturbed for a period not to exceed 20 days to allow for settling before being gauged. When a request for immediate gauging is made in writing by the importer, it shall be allowed by the port director.