The significance of the U.S. Environmental Protection Agency's critique of the State Dept.'s draft supplemental environmental impact statement for the Keystone XL pipeline is, apparently, in the eye of the beholder.
Proponents of TransCanada's $5.3-billion project say EPA's April 22 letter to the State Dept. is nothing more than a call for tweaking the environmental document to address some lingering issues. However, opponents say EPA's comments pose important questions.