Typical numbers for one month: 800 gallons of fuel used by our trucks, plus 3458 kilowatt hours of electricity. If we were to use the 400 KW diesel generator at the plant site (not within our lease at the moment, unfortunately) to generate that electricity, operating at an average half capacity at 20 gal/hr, it would use 346 gallons of fuel.
So, we can estimate that we use roughly 1150 gallons of fuel to source, process, and deliver 10,000 gallons of fuel. That's a 8.7:1 positive energy balance, and it will get a lot better as we grow, because it doesn't take much more energy to make a lot more fuel!
Take that, David Pimentel!
UPDATE: There's a discussion about this going on at the infopop forum, here.