Federal regulators have granted Gas Transmission Northwest LLC (GTN) a favorable environmental impact statement (EIS) that if approved could increase natural gas pipeline capacity by about 150 MMcf/d between Idaho and Oregon.

GTN

In the final EIS, FERC staff said with the recommended mitigation measures, the GTN XPress Project would result in some adverse environmental impacts, but none are considered significant.

Federal Energy Regulatory Commission staff said the EIS does not characterize the project’s greenhouse gas emissions as significant or insignificant because the Commission is conducting a generic proceeding to determine whether and how it would conduct significance determinations going forward. 

At the same time, the EIS concluded that no system or alternative would...