Just did a quick google search and came up with this:
Concealed Firearm Carry Permit in California: Information Database
Looks like you have to demonstrate "Good Cause" to get a concealed carry permit, but they do have good suggestions (even on wording so you are more likely to get one). See the last one under the "Good Cause" section... I suggest you take up the hobby of camping if you don't already. Odd that concealed carry is permitted for anyone in most California campsites. Keep in mind, that is not actually from San Bernardino County, so while good advice, take it with a grain of salt and make sure you check what the sheriff's office says specifically.