Last week, California's Contra Costa County released environmental impact reports for the projects from oil refiners Marathon Petroleum MPC.N and Phillips 66 PSX.N. Last year California Governor Gavin Newsom called on the state to expedite regulatory processes to repurpose and downstream oil production facilities such as refineries and to phase out the sale of internal combustion engines by 2030. Environmental advocates have demanded that regulators consider the effects of the proposed biofuels projects on water, air quality and food prices, and have warned that the increased use of hydrogen in refining fats and oils might cause more flaring.