Zoning may be allowed but try and get through the State and Federal red Tape for commercial production.
Pony up a million and you might be good to go.
Licensed fuel producer is just not obtainable for a laymen.
Check into biodiesel.org, aka national biodiesel national board. You will have to join, use them for tier testing and then pay them so much per gallon you produce.
I would almost be willing to bet you would never get local zoning clearance to make it for resale. There is so much red tape with EPA its not even funny.
I pay my state road tax, they had to create a process to collect from individuals but it only took them one working day to come up with it!
If I was to sell it, which I do not, and get caught, I am going to jail or at the least having a very unpleasant experience with the tax code, local building codes, federal government and a nice hefty attorney bill.
Jump over to Biodieselnow.com forum and there are a few small commercial producers that post there. You can ask them about start up.
Rick H...