What to do with stale gas?

[davepl]

I bought a truck that's got half a tank of gas from the mid 90s, last time it was on the road.

I can't pour it down the drain, obviously, and I live in a watershed, so it's not going in the ground, and it's too old to burn in a car.

What the heck can a guy do with like 10 gallons? I could fill 5 gallon paint buckets and take it to the "hazardous waste" collection events they have now and then but that's my only guess!