It wasn't. California does not have a stand your ground law.
View page
There are 34 states in the Unted States that have a
stand-your-ground law. Of those 34 states, Iowa, Virginia, and
Washington have their own version of the stand-your-ground law.
View page
Yes, Utah does have a stand-your-ground law. Additional states
with a stand-your-ground law include Tennessee, Texas, West
Virgina, Ohio, Arizona, and Alaska to name a few.