My first posting, please forgive me if it's in the wrong spot - I saw "outdoor fuel tank" and came here. Anyway! I can't find if there's a law on this - A residential oil company will not deliver to my home unless we dig up the tank and have a fuel tank vent alarm/whistle put on the tank. Our previous oil supplier retired and closed his company. So, is this some PA law now? We'd never had a problem before, no one ever said a thing. Do we REALLY have to dig and put this thing on? Thanks in advance, friends....