"How much of that pipeline capacity is dilutent"

Hi, Rick S.
You raise a good point. I'm guessing about 30% would be diluent and so far I've heard nothing about how it would be returned to Alberta nor what would be done with it if there is to be no return pipeline. It's unlikely that TC would go through all that effort to run a return pipeline. Diluents are highly flammable and if they are to be returned by rail then EE won't do much to resolve people's concerns about tanker cars rolling through their neighbourhoods.

TC is planning to build a 300,000 bpd pipeline (Upland) which would bring Williston crude north to enter EE around the SK-MB border. Some of that would be Cdn but I'd think most of it will be American crude. If,say, 25% of EE's volumes are American then that is another argument against the project.