"Where does it state in the permit that they must process "optimal" plastics?"
"Optimal" isn't really a specification. One of PTOI's 10-Q's referred to "optimal feedstock" but, just in my opinion, it's a term born out of the number of times PTOI has reported problems with feedstock. From purchasing bad feedstock to declining Madison County's agricultural plastic, etc....
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Plastic2Oil, Inc. (PTOI) Stock Research Links
Yes, I understand your penny stock also is the real deal, created with the inventiveness of Edison and destined to be the next Microsoft. Yes, I understand that the delays are also only because your company is making their product and/or technology even more revolutionary.