Not many people know this, but there is a lot of Oil in California. Especially Los Angeles and Beverly Hills. Infact, there are oil rigs everywhere, but most people cannot see them. They are hidden in houses, malls, schools, and other places.
California is the 4th largest oil states in the 48 state region. To learn more about the following...go to.
http://www.oilshalegas.com/beverlyhillsoillosangelesoil.html
Green River Oil Shale Formation
http://www.oilshalegas.com/greenriveroilshale.html