California Code, Health and Safety Code - HSC § 43867

(a) “Alternative fuel” means a nonpetroleum fuel, including electricity, ethanol, biodiesel, hydrogen, methanol, or natural gas that, when used in vehicles, has been demonstrated, to the satisfaction of the state board, to have the ability to meet applicable vehicular emission standards. For the purpose of this section, alternative fuel may also include petroleum fuel blended with nonpetroleum constituents, such as E85 or B20.

(b) “Full fuel-cycle assessment” means evaluating and comparing the full environmental and health impacts of each step in the life cycle of a fuel, including, but not limited to, all of the following: