The state excise tax just went up, the Low Carbon Fuel Standard is getting more strict and 2 refineries are shutting down.

As of Tuesday, July 1, California drivers will pay a little more to fill up their tanks. The state's gasoline excise tax increased from 59.6 cents to 61.2 cents per gallon - a change required by law and tied to inflation.

As an increase in the excise gas tax takes effect comes a separate change related to California’s Low Carbon Fuel Standard. What is that?