June 15, 2011. Chevron was one step closer to getting final environmental approval for its $25 billion Wheatstone liquefied natural gas (LNG) project after Western Australia's Environmental Protection Agency recommended conditional approval. The Wheatstone project off northwest coast of Australia will eventually produce 25 million metric tone per annum of LNG, primarily for export, and the first phase of the project will have a capacity of 8.9 mtpa of LNG as well as a domestic gas plant.