The proposed rule includes updating Federal requirements for product labeling; updating rule sections to reflect current versions of referenced department forms; changing the adopted reference of the National Institute of Standards and Technology (NIST) Handbook 44 from a direct reference to another rule reference to ensure consistency with regard to adopted versions; amending labeling requirements to better reflect current changes in the market with respect to diesel fuels blended with biodiesel; amending the penalty section to more appropriately apply penalties to violations of this rule and update references in the penalty section; updating sections of rule to account for the recent Division and Bureau level mergers; adopting diesel fuel nozzle size requirements; adopting federal labeling requirements for E15 fuels; adopting labeling requirements for mid-level ethanol blends; amending diesel fuel dispenser labeling requirements to reference applicable CFR requirements, which will update the labeling requirements to current codes; amending rule to reflect recent statutory changes to transfer collection of the petroleum inspection fee to the Florida Department of Revenue; and adopting labeling specifications for gasoline blended with butanol.