The inside scoop (I'm in the industry, just not in NE).
Old gas is regulated by the EPA as an off-specification commercial product, and as such is exempt from hazardous waste regulation if used as a fuel (does not have to be motor fuel) or reprocessed into a fuel. Thus, the most common recycling method is to filter and then dilute it into a much larger volume of gasoline. There are brokers that specialize in this. They also blend trans mix (mixtures formed during pipeline shipment) and tanker clean-outs. Some of them re distill the material, but just as many do not. Some burn it in industrial furnaces re-fitted to safely handle flamable liquids (my company does this).
There is probably no good reason not to blend it off with new gas after typical fuel filter polishing. There were a number of folks at my last marina that were always bringing me separated gas and wet gas. A little filtration (water separation followed by a carboy with an automotive gas filter on a hose on the bottom) additive, and blending made it into free stuff for me. I did that for about 5 years and never opened a carb. What you did not tell us was what made you decide that it was too old.