TransCanada announced yesterday that it will seek an alternative routing for the proposed Keystone XL Pipeline in order to avoid the Sand Hills region of Nebraska.  TransCanada seeks to build the pipeline to transport petroleum from the oil sands of Alberta to refineries on the Texas Gulf Coast.  The route previously proposed by TransCanada would have passed through the Sand Hills area, which contains a large number of wetlands.  That routing drew opposition, and the United States Department of State announced last week that it was delaying a decision on whether to approve the pipeline in order to consider alternative routes (the pipeline needs State Department approval because it crosses the border with Canada).  TransCanada stated that it will work with the Nebraska Department of Environmental Quality to determine a new route.