I stopped at the Augusta supercharger tonight.
I can confirm that a tesla tech is in the state of Maine, because I saw him with my own eyes as he did maintenance on the Augusta chargers.
He was a nice guy but could not give me any information about if or when he or anyone else would go to Brewer. It was clear to me that he is not allowed to discuss anything supercharger related that isn't already public knowledge.
But he is not local to Maine. I think it is sensible to assume that tesla would not send him to Augusta but NOT send him 100 miles up the road to do the commissioning that Brewer needs.
My guess -- and I stress that his is my hunch only, because he did not tell me anything about when Brewer would be visited -- is that he will go to Brewer and turn it on any day. Maybe tomorrow.
That guess is dependent on my belief that Brewer is waiting only on tesla now. If there are more city or state inspections needed, I could be wrong.