In fact .. there is NO regulation of any sort for SELLING AV GAS. The only regulation is that it NOT be used ON ROAD since there is not 'road tax' associated with it. (however there IS, of course, a Fed gas tax, but that's a separate issue).
Generally speaking, MOST of the small (non 'controlled' .. meaning NO CONTROL TOWER FOR AIRPLANES) airports have SELF SERVICE stations and are HAPPY to sell to whomever drops by to PAY them for fuel. That USUALLY also means that NO COMMERCIAL air transport is serviced there (scheduled airlines of any sort). Most of those will also have only ONE SINGLE RUNWAY... and generally less than 1 mile long. There are HUNDREDS of those airports around .. you just have to find the one you want.
In my case, I have TWO airports within reasonable driving distance that simply REFUSE to sell me AvGas.. no matter what the rules are. I also have about 4 other (SMALLER) airports that are quite happy to sell me fuel .. or let me buy it since it's all SELF SERVICE. I call the airport (manager?) and tell them what I need the fuel for and they give me a gate access code (generally the unicom frequency) to access the pumps. You need to be careful and keep in mind that it IS an AIRPLANE facility .. and treat it with kid gloves, but MOST places are happy to have you buy their fuel.
Local MUNICIPAL airports, generally support SOME SORT of commercial air traffic and therefore (for some UNKNOWN REASON) *ALL* seem to be averse to selling AvGas into anything other than an airplane. I too have argued .. all to no avail. They are GOV'T employees and TERRIFIED of getting fired for doing something they think MIGHT be wrong.
I don't know really where you are, but Collegedale (
(423) 236-5008) looks to me like a likely prospect to happily sell you fuel. Just call them and ask before you make the drive. I also see listed a 'Dallas Bay Skypark', up in Hixson (1824 East Crabtree Rd. Hixson, TN 37343
(423) 842-9845).
You might have already tried both, but I'd be pretty surprised if at least one of them would not be HAPPY to sell you AvGas by the can.
Steve, FV80