I was there today. I heard traffic on 1,2 and 4. Nothing on that repeater channel all day when I was listening.
Sounds like Security are the 500 series as earlier alluded to. It sounds as if the 200 series are Lifeguard Leads and Supervisors, the 300 Series sounds like regular staff (lost keys, locker problems etc.). 100 series sounds like admin types, with "100" being the head poo-bah.
I was there to have fun and didnt listen a whole lot, mostly at lunch. It is all simplex, and sounds good like Simplex should. Freqs and PL's are correct as far as I can tell.
...wonder what happened to their repeater???
Dave