 Construction of the Trans-Canada Keystone XL pipeline which would deliver Canadian tar sands crude to Jefferson County and proponents say would help in relieving US dependence on oil from more politically volatile regions is awaiting federal permit approval.In addition, recent rail terminal facility expansions and new construction has significantly increased the transportation of Canadian tar sands oil and bitumen to the area for processing by area refineries.Cheniere, one of two companies with Liquefied Natural Gas Terminals on the border of the Texas/Louisiana Coast, is completing construction of a $10 billion liquefaction facility.