I believe you could be right hog, but it doesn't mention anything specific in the email. From what I've asked in another thread it seems they can ask you work anywhere regardless of where you live. I'm sure they'll organise things as efficient as possible though. You go where the work is in the trades. From what I asked in the interview, most work is projected to be in Sf for now.

As someone who'd be coming from out of town, I'll have to try to get this clarified a bit to prepare logistically.