Sybex7254, The Patterson Housing Authority Police Depts. use of the three frequencies: 453.1 MHz 458.1 MHz & 458.6375 MHz, listed under callsign: WNNC394 doesn't expire until 10/15/2012 so maybe the housing authority administration is using it now, take a listen & see what you hear. Their contact phone number: 973-345-5080 at 60 Van Houten St. is no longer branched from the administrative number, their old direct contact phone number: 201-345-5636 has been reassigned to State Farm Insurance & a call to the PPD information operator at: 973-345-5080 revealed that the PHAPD were disbanded years ago as you said, they were invited to join PPD if they were willing to forfiet their seniority rights & start a new probationary period as police officers regardless of their present rank. PPD has the housing complex absorbed into their existing zone structure.
I am getting loud and clear communications on 453.10000 192.8 PL. They are identifying themselves as "river #". Seems like the comms are about turning the water on and checking heat valves at certain units.