About a year ago, i plead guilty for trespassing - land p.c.602.8a in california. it was a misdemeanor w/ a $200 fine and probation for 3 years. after this i looked up the penal code and it said that for a first offense, it is an infraction with a $100 fine. now i want to join the coast guard, but they wont let me join with a misdemeanor unless i have it expunged or when the probation is over. is there a good chance that i can have this expunged from my record?