I don't know if that episode aired. I can't recall having seen it. I'd imagine NYA knew, but I wonder if they got paid for location rental? Some private land owners make a decent amount of money renting locations out for filming. Other people like me sometimes make a few bucks finding such locations for them to film at...
About 2 years ago I was hired for a day to bring a band to some rough parts of town so they could get some urban type photos. One of the spots I brought them to was the bushwick branch, by the crossing at metro with all the trash and grime. Since it was right at the public street crossing we didn't bother getting permission beyond street permits from the city. Easiest 1000 I ever made in one day. We just had one big location truck (RV), fully catered for around 10 people.
(The band was 'Jet' - probably best known for their song on those ipod commericals (well, pre U2 vertigo). I still laugh a bit when I hear them come on 92.3 k rock. Back at the time of the shoot they were entirely unknown, though I figured they'd get somewhere given all the money the record company was throwing around)