There's some inconsistency in my notes that I need to sort out, but I don't think site 16 is live any more, if it ever was. I have many site 22 (East Central Simul) voice channel captures that previously included site 16 in their neighbor lists, but no longer do so, e.g. 853.3625, whose neighbor list does not include site 16 in captures on 2021-09-05, 2021-11-07, 2022-01-13, 2022-02-03, but did include it at some point before that. Also, those older neighbor announcements say the CC for site 16 was 0-455 (853.8500), not 0-457 (853.8625). 853.8500 is a currently-live CC for site 9 as of late February, which RRDB says is the Ontario PD station (reasonable, based on a few data points I have). Site 21 (West Valley Simul) currently uses 853.8625 as a voice channel.
Those site 22 voice channel captures similarly used to include site 30 (channel 0-349 – 853.1875), and no longer do so. There is no site 30 in the system currently and I haven't heard a site 30 on the system in the last year or so. I have heard 853.1875 as a voice channel for site 22.
I need to be in Chino sometime in the next week and will attempt to sort this out if I can.