As a Federal agency, the Department of the Navy (DON) is required under the National Environmental Policy Act (NEPA) to integrate environmental values into our planning decision making processes by considering the environmental impacts of proposed actions and reasonable alternatives to those actions through a systematic interdisciplinary approach. To act as responsible stewards of our natural resources, the Navy and Marine Corps work with other Federal agencies, State and local governments, Native American tribes, concerned public and private organizations, and individuals when deciding how its proposed action can have a physical impact/effect on the environment through construction, maintenance, range actions, operations and training, weapons system development and testing, master planning, natural resources management, etc.
The DON executes the NEPA process using its Procedures for Implementing NEPA found in Title 40, Code of Federal Regulations (CFR), Part 775; SECNAVINST 5090.6A; OPNAVINST 5090.1C CH-1; and Marine Corps Order P5090.2A CH-2. This process consists of an evaluation of the environmental effects of an undertaking including its alternatives. The process involves three levels of analysis: Categorical Exclusion; Environmental Assessment (EA) and Finding of No Significant Impact (FONSI); Environmental Impact Statement (EIS) and Record of Decision (ROD).
Executive Order 12114 applies to a proposed action that will occur overseas. In this case, the DON develops a Record of Negative Decision, an Overseas Environmental Assessment (OEA), or an Environmental Impact Statement (OEIS).
NAVFAC helps determine when Navy and Marine Corps actions require a CATEX determination, EA, or EIS. NAVFAC conducts in-house or contracts for the thorough environmental analyses and supporting studies necessary to prepare these documents.