Ah, Aerohaven. This one I'm quite familiar with; I've been going back there for a long time.
You can find some more info and a lot of historic aerial photos
here - and I'm sure also on Boydsmaps.
The southern end, where the aircraft hangars used to be, is, or was, a Superfund site. Apparently during the 1960s and 1970s, the runway around that area was extended and in-filled with waste from a glass manufacturing company.
Unfortunately, the waste turned out to be asbestos (p. 102). I believe the southern end was dug out originally for soil remediation, and the ponds that resulted are now being used as retention for sewage processing for the township. This is all fenced off and you wouldn't really want to go near it anyway. Since then, there has been some talk of
putting a solar farm there as well - I'm not sure if those discussions have gone anywhere.
The more interesting side to me is the northern end, which is still an open, unpaved sandy clearing where the runway used to extend. It makes for an interesting landscape. Here are a couple of photos from back in January.
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