### Question
How does the law define biomass-based diesel?


### Answer
Under *42 U.S.C. § 17021*, **biomass-based diesel** is defined as:

> biodiesel as defined in section 13220(f) of this title

#### Citation:
  - *42 U.S.C. § 17021*
  - Heading: **CHAPTER 152-ENERGY INDEPENDENCE AND SECURITY > SUBCHAPTER II-ENERGY SECURITY THROUGH INCREASED PRODUCTION OF BIOFUELS > Part A-Renewable Fuel Standard**

