The Western Australian Environmental Protection Authority (EPA) has recommended a compliance start date for US energy major Chevron’s carbon dioxide (CO2) injection system, at its Gorgon gas development, on Barrow Island. Chevron in August this year announced the safe start-up of the CO2 injection system at Gorgon will reduce the project’s greenhouse gas emissions by about 40%, or more than 100-million tonnes over the life of the injection project.