I know in VA firing of weapons on private land is generally regulated by Cities and County governments. There may be some general state laws about how close to building you can fire weapons that sort of things.
The link to State Law search is http://janus.state.me.us/legis/statutes/search.asp
It does not work for me, might be down temporarily. I would go on your County or City site first. 3-arces is Kinda small for a lot of shooting, not that far from the neighbors, but occasional shooting might be OK. I can legally shoot in my back yard, but the neighbors are way to close, for that action to be neighborly. My Father-in-law has 10 acres and we occasionally will shoot clays and target practice at his place, wish it was closer than 700 miles though.