I called the mayors office earlier this year , he has no problem individuals detecting Airport park , also the old bell farm was located there as well . But the only problem is, its a heavy trash area , must of been used as a dump for Matamoras and Milford late 1800s . Pennsylvania is pretty good for detectorist as almost all State parks allow metal detecting , and certain parts of State forests , I would also visit
http://shohola.org/ as there is allot of history in the area , Shohola was a major crossing and traveling path for Indian tribes for over 10,000 years , traveling from the Hudson valley to the Susquehanna valley ,
It also seems Port Jervis has no metal detecting Laws , as I wrote the park commissioner earlier in the spring ,he says he sees individually metal detecting around the beach and parks and nos of no ordinance baring detecting , Port Jervis around the river area , especially near the Erie Railroad station has promise both Port Jerivs and Milford pa where busy hot spots in the early to mid 1700s .
Plus there is much forest and sticks that are not posted , so use your own judgment when detecting . just make sure you know the boundaries of the National Park and
keep out everything from Milford to the left is National Park , when traveling on route 2001 everything to the Left is National park , the upper Delaware from Hancock to Port Jervis the river area coast and its tributaries are national park , I'm not sure how many yards from the shore is considered protected areas .
I found a couple of good spots , but been busy and waiting for the vegetation to dry out a bit , but Trust me there is allot of Good spots in the area , use google earth you ll find a few .