Have you tried setting up with the local restaurants for their grease? If you had 5+ restaurants you might be able to supple enough of the grease for your biodiesel.
I'm not in Colorado. Im in Utah and have a few friends in the oil fields right now for the oil. They are working for different companies one in ND and another in WY, TX. All three of them perform different duties but say after the well is drilled they either vent or burn off the natural gas then frack for the oil. I didn't know they were fracking for the nat gas.
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