An unlawful gathering in March at Crown Memorial State Beach left one person hospitalized after they were Tased while in a crowd.
There were also reports of underage drinking, fights, an assault and someone pepper-spraying other partygoers at that gathering.
“Alameda is a welcoming city, and we want residents and visitors alike to enjoy a safe summer,” police said. “We will not tolerate reckless or unlawful behavior that endangers our community, and we will hold those who compromise the safety of others accountable for their actions.”