You’d be shocked at how much is out there between wood chips, landfill waste, dead animals, food waste, pet coke, tires etc. 500 tons a day sounds like alot but we found out it isn’t really that much. The problem is finding a gasifier that will run without problems and generate enough syngas to do something with profitably.
I believe that much of that is already spoken for. The point is that to change the direction of these waste streams, you have to prove to those hauling it to the dump that this is a better use ($$$). I remember a presentation at the Allegheny SAF where the presenter showed one of the problems with firing power plants with wood chips, many of the studies showing there were sufficient supplies did not consider the already existing plants. Overlapping catchment areas.
As for getting the gasifier to work reliably at these rates in excess of 500+ tons a day, that will take 5-10 years from the start of scale-up.