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State Department issues Draft Supplemental Environmental Impact Statement on Keystone XL Pipeline: climate change impacts

Green Car Congress

The difference between WCSB oil sands and heavy Mexican and Venezuelan crudes is narrower than lighter crudes, such as Middle Eastern Sour. Thus, the SEIS concludes, the life-cycle carbon footprint for transportation fuels produced in US refineries would increase if the Keystone XL project were approved. MMTCO 2 e annually.