I was just at Seaside Park earlier today and heard the lifeguards using the VHF frequencies listed in the database. In fact, I heard all of the VHF frequencies in use, except for the Beach Maint one (was only in the area for 45 mins). However, I was searching for the Berkeley Beach Badge Attendants frequency and found that one (yes, a submission was made to the database) while monitoring the Seaside Park VHF lifeguard/beach patrol channels to make sure they were still in use.
Seaside Heights are using the frequencies listed above in the thread, and they are a separate town with their own operations plan.