Section 096-171-4 - Control and Operating RequirementsA.Tanks Storing Distillate Fuel. Any non-exempt petroleum storage tank for which construction commenced after the effective date of this Chapter, and which stores distillate fuel, shall be equipped with a floating roof with one or more closure seals to reduce the visual space between the roof edge and tank wall; or the petroleum storage tank shall be equipped with equally or more effective alternative controls as approved by the Department.B.Heated Petroleum Storage Tanks. Any non-exempt heated petroleum storage tank shall be fully insulated in a manner that minimizes temperature fluctuation of the stored material.C.Tank Truck or Trailer Loading. Liquid petroleum product shall not be loaded into any tank truck or trailer whose most recent previous load was gasoline unless: (1) The vapors displaced from the tank truck or trailer are captured and routed to a VOC control system approved by the Department. The vapor collection and VOC control systems shall be maintained in good working order and must be operated at all times product is being transferred to such tank trucks or trailers;(2) All loading and vapor lines are equipped with fittings which make vapor-tight connections and which close automatically when disconnected; and(3) The pressure in the vapor collection system is not allowed to exceed the tank truck or trailer pressure relief settings.06-096 C.M.R. ch. 171, § 4