Yeah, I figure there would be, but it looks as though your link doesn't apply to gasoline tanks:

280.10 Applicability

(b) The following UST systems are exluded from the requirements of this part:

(1) Any UST system holding hazardous wastes listed or identified under Subtitle C of the Solid Waste Disposal Act, or a mixture of such hazardous wastes and other regulated substances

(4) Any UST system whose capacity is 110 gallons or less

But looking at the Solid Waste Disposal Act doesn't help either, because it specifically mentions "solid waste", nothing about "liquid" gasoline. Assuming that it's not covered there, it would be covered "here", and it's under 110 gallons! <img src="/images/graemlins/smile.gif" alt="" />

When in doubt consult your local attorney and regulatory agency. <img src="/images/graemlins/smile.gif" alt="" />