Re: A bit of clarification

Well, when and if new locomotives are brought into service, they will have to conform, of course. But the new rule is not a syringe with which to extract a bunch of money from the states. There are a lot of unfunded Federal mandates competing for state funds. There's no compelling reason to have more than six locomotives in service right now. Our existing locos will consume all our effort for at least the next two years. To try to make such an argument to the states might damage our credibility in the long term.
And there are other priorities for capital improvements: additional passenger cars, improvements to existing cars, building improvements, etc., for which the Commission is seeking funding. Having ten locomotives hot would be lots of fun, but it would be the equivalent of a small business tying up a couple of million dollars in unsold inventory just to claim to be big. You simply wouldn't use locomotives 9 and 10 enough to ever recoup their overhaul and maintenance costs unless you were carrying lots more passengers, which require more cars.
If additional locomotives are brought into service, it will probably be as the result of a Friends fundraising project or because ridership and schedule changes demand. I believe that you will see 483, and perhaps 492, run again. But beyond that, don't hold your breath.
JAC