He faces a maximum sentence of 55 years to life.
In addition to murder charges, Gallo is charged with driving under the influence and causing bodily injury, driving with a blood alcohol level above .08% and causing bodily injury, and fleeing the scene.
The Orange County D.A. says Gallo's blood alcohol level was nearly three times the legal limit.
Gallo was driving on a suspended license because of a prior DUI. He fled the scene and was eventually arrested.