I finally have something concrete on this, but still not quite specific enough to say exactly what it is. Since this rumor, I have been checking the Oregon building permits page, and I finally found something for a high power car charging station, but it doesn't say whether it's Electrify America or Tesla or some other company. I have emailed the company, asking if they can tell me that detail of whose kind of station they will be installing. I'll create a new thread for it once I can get an answer to title the thread with what brand of station it is, whether Supercharger or something else.
Anyway, here is the permit. The description of the project says "Car Charging Station, located behind the Chamber building - 3 phase 480V"
Accela Citizen Access