My point was that California law does not apply (regardless of the EPA region), so you post was a little misleading in that regard. Your focus should be on New York law, recognizing Federal overlay of course. Again, I believe the maximum timelines are found here:
These timelines run from date of application (or date of hearing when applicable), so answering the original question, regarding time from date of stack test, cannot be answered by this reg. We need someone with experience in processing these applications (plural) to answer that.
This really doesn't matter, but I think you are confusing New York Department of Environmental Conservation "regions" with Federal Environmental Protection Agency "regions." The former applies to regions within New York, whereas the latter refers to regions in the USA.
Again, none of this really matters. What matters, for purposes of the original question posed, is the pertinent timeline for the application process. References to other states' laws, and inapplicaple laws in general, do not help, and are very misleading.