Dan Bernstein has asked me if I know the dollar amount of fines for noise violations/ student parties. I know the following from http://www.riverside.courts.ca.gov/criminal/criminal.shtml)
A misdemeanor case is a criminal action in which the defendant is charged with a misdemeanor and it may include an infraction charge. It does not include any felony violations. The maximum punishment for misdemeanor violations is not more than 6 months, a fine not exceeding $1,000, or both.