They have been promising local excavation and trucking contractors for years that when it gets approved, they will be given as much work as they can handle. The local I got this from was planning to retire after the project and was sitting on a yard full of equipment paying loans for work that didn't come for a couple of construction seasons. He still plans to support it if he can find folks to drive for him. There is a major shortage of labor in the area and not lot of accommodations, it will definitely be a boom town if it goes. I expect the Balsams is going to regret linking with NP approval as they will have a tough time getting labor as NP will be paying a lot more. It happened when PNGTS went in, a lot of locals made a couple of years of pay during construction and it was gone within a few months of the end of the project. There was a wave of divorces about that time.
The actual skilled work is all specialized out of state union contractors. IBEW has a token training program so they can staff locals as apprentices.