The Federal Energy Regulatory Commission (FERC) is the lead federal agency in charge of overseeing the permitting process for interstate natural gas transmission pipelines.

To guide its decision making process, FERC will conduct a comprehensive environmental review of the project, in accordance with the National Environmental Policy Act (NEPA). Throughout this process, FERC will work closely with other federal, state and local agencies. Landowners and the general public will also have numerous opportunities to participate in the process by attending public meetings and providing public comments to FERC.

Before the formal environmental review of the project begins, Spire STL Pipeline will spend more than a half year engaging with and gathering input from stakeholders in what is known as the FERC pre-filing process. Once the pre-filing process is completed, Spire STL Pipeline will file an application for a Certificate of Public Convenience and Necessity with FERC, which will initiate the formal environmental review of the project. The application will describe the purpose and commercial need for the project, the transportation rate to be charged to customers, proposed project facilities, and how the company will comply with all applicable regulatory requirements. Spire STL Pipeline will evaluate project alternatives, identify a preferred route, and complete a thorough environmental analysis.

FERC will then review the application in order to evaluate the need and overall impact of project construction and operation, and will summarize its findings in an environmental review document. Should FERC determine that the project is necessary and appropriate, it will issue a certificate authorizing construction of the Spire STL Pipeline project.