At Lamar Street, you can clearly see the grade work that has been done by UP to facilitate the addition of a second main track. It appears as though this track may converge with the existing track at CP 7.5. The new track will likely be used for holding coal trains that need to be recrewed between Lamar and Tennyson. The new track will allow DS-86 to continue to run trains around the tied down train.
Note: Apologies for poor picture quality - picture taken with my iPhone 4