In order to comply with the standards, fuel importers can blend lower carbon
liquid biofuels such as ethanol, biodiesel or renewable diesel or provide
alternative fuels such as natural gas, biogas, electricity, propane or hydrogen.
This flexibility allows importers to choose between alternatives based on what
works best for them and what’s least expensive and also provides multiple
options in case another one doesn’t materialize. Also, the current rule
authorizes the Oregon Environmental Quality Commission to suspend or modify the
Clean Fuel Program requirements if supplies of lower carbon fuels are lower than
what is needed to comply.