TransCanada Corp., the company behind the Keystone XL pipeline, has requested that Nebraska regulators reconsider their approval the week of Nov. 20, of the pipeline's alternate route, rather than the one that the company has said it would prefer, PBS reported.

Russ Girling, president and CEO of TransCanada, said in a statement that the company was looking into how the approved route would "impact the cost and schedule of the project," PBS reported.

Now, TransCanada is looking to Nebraska regulators for clarification about the alternate route, which it says will add another pumping station and five miles of pipeline to the company's preferred route. TransCanada said its preferred route will both be less expensive to build and will align with public interest better than the approved route, PBS reported.