California officials are appealing a federal judge's ruling that blocked implementation of the state's mandate for low-carbon fuels.
Stanley Young, spokesman for the California Air Resources Board, said the appeal was filed Thursday in U.S. District Court.
The appeal comes after Fresno-based U.S. District Court Judge Lawrence O'Neill blocked California from implementing its first-in-the-nation low-carbon fuel standard. The board will request a stay of O'Neill's ruling next week.
O'Neill said the rule discriminates against crude oil and biofuels producers outside California, in part by mandating that fuels receive a "carbon-intensity score," which takes into account the pollution created in the manufacture and transportation of the fuels to the state.
The mandate requires all vehicles' fuels, on average, to be 10 percent less carbon-intensive by 2020 than gasoline is now.