Thanks for the feedback. The property is indeed owned by Metro and Gresham, though the trail is not in RLIS trails. I work at Metro and the site managers asked me to remove the trail as they do not maintain or manage it. I thought I changed the trail to "informal path" and foot access to "discouraged".  I also changed bike access, horse access, and dogs allowed to "no". Is there a better way to show the trail is not an official one, but only a user-created path?