What is NEPA?​

The National Environmental Policy Act (NEPA, 1969) requires federal agencies to consider the effects of their actions on the environment. Federal funding and/or permits are actions that prompt a review under NEPA and other federal environmental laws and regulations. These requirements must be completed prior to the obligation of funds and prior to any construction activity occurring. PHMSA must complete a NEPA review for each NGDISM grant project because it is authorizing federal funds to be expended on these projects.​

What is Section 106 and how does it relate to NEPA?

Section 106 of the National Historic Preservation Act (NHPA) (54 USC § 306101 and 36 CFR Part 800) requires federal agencies to take into account the effect of their undertakings on historic properties and afford the Advisory Council on Historic Preservation an opportunity to comment. The process involves identifying historic properties, assessing the effects of the proposed action on those properties, and seeking ways to avoid, minimize, or mitigate any adverse effects. Federal funding and/or permits trigger the requirement to complete the Section 106 process, which is conducted and completed during NEPA. PHMSA is required to complete the Section 106 process for each NGDISM grant project because it is authorizing funds to be expended on these projects.

Where can I find NEPA documents for the NGDISM program?

Additional information for the environmental review process for the NGDISM program can be found on the following pages:

• NGDISM site specific environmental documents
• PHMSA Adoption of Department of Energy Categorical Exclusion (July 3, 2024)
• NGDISM Tier 2 Site Specific environmental assessment webinar slides (May 28, 2024)
• NGDISM Tier 2 Site specific environmental assessment webinar (May 28, 2024)
• NGDISM Tier 1 Nationwide Environmental Analysis
• NGDISM Tier 1 Federal Register Notice