(a) In general Each retail diesel fuel pump shall be labeled in a manner that informs consumers of the percent of biomass-based diesel or biodiesel that is contained in the biomass-based diesel blend or biodiesel blend that is offered for sale, as determined by the Federal Trade Commission . (b) Labeling requirements Not later than 180 days after December 19, 2007 , the Federal Trade Commission shall promulgate biodiesel labeling requirements as follows: (1) Biomass-based diesel blends or biodiesel blends that contain less than or equal to 5 percent biomass-based diesel or biodiesel by volume and that meet ASTM D975 diesel specifications shall not require any additional labels. (2) Biomass-based diesel blends or biodiesel blends that contain more than 5 percent biomass-based diesel or biodiesel by volume but not more than 20 percent by volume shall be labeled “contains biomass-based diesel or biodiesel in quantities between 5 percent and 20 percent”. (3) Biomass-based diesel or biodiesel blends that contain more than 20 percent biomass based or biodiesel by volume shall be labeled “contains more than 20 percent biomass-based diesel or biodiesel” . (c) Definitions In this section: (1) ASTM The term “ ASTM ” means the American Society of Testing and Materials. (2) Biomass-based diesel The term “ biomass-based diesel ” means biodiesel as defined in section 13220(f) of this title . (3) Biodiesel The term “ biodiesel ” means the monoalkyl esters of long chain fatty acids derived from plant or animal matter that meet— (A) the registration requirements for fuels and fuel additives under this section; and (B) the requirements of ASTM standard D6751. (4) Biomass-based diesel and biodiesel blends The terms “ biomass-based diesel blend” and “biodiesel blend” means a blend of “ biomass-based diesel ” or “biodiesel” fuel that is blended with petroleum-based diesel fuel. ( Pub. L. 110–140, title II, § 205 , Dec. 19, 2007 , 121 Stat. 1529 .) Statutory Notes and Related Subsidiaries Effective Date Section effective on the date that is 1 day after Dec. 19, 2007 , see section 1601 of Pub. L. 110–140 , set out as a note under section 1824 of Title 2 , The Congress . CFR Title Parts 16 306