EPA doesn't regulate farm or residential tanks <1100 (I think it's 1100) gallons if the fuel is for use on site and doesn't involve commercial activity. (I don't know how the commercial part squares with the farm part.) If the state and local regs disown it and the EPA doesn't regulate it, it's kind of open territory with wide latitude for lawyerly opinions. Around here, it's all speak no, hear no, see no....everyone looks the other way on residential tanks. A customer of mine is director for EPA District 5...asked him about it...he was noncommittal indicating they don't want to get involved in residential tank issues unless there's soil contamination, and even then, they tend to keep the blinders on. It's just a teeny residential tank surrounded by Chicago, Gary, and massive Superfund cleanup sites. Per Kibbel, what's the question?