Nationwide Programmatic Agreement

Nationwide Programmatic Agreement (NPA)

What is an NPA?

A programmatic agreement (PA) is a program alternative developed under Advisory Council on Historic Preservation (ACHP) regulations 36 CFR 800.14 to meet the requirements of Section 106 of the National Historic Preservation Act. PAs allow federal agencies to govern the implementation of a particular agency program or the resolution of adverse effects from complex projects or multiple undertakings similar in nature through negotiation of an agreement between the agency, appropriate State Historic Preservation Offices (SHPOs) / Tribal Historic Preservation Offices (THPOs), and the Advisory Council on Historic Preservation (ACHP), as well as other interested parties and the public. A Nationwide Programmatic Agreement (NPA) is appropriate when the scope of the program involves multiple states.

Purpose of the NPA

The Navy’s goal for the NPA is to integrate strong, proactive historic preservation planning with the unique requirements of the Shipyard Infrastructure Optimization Program (SIOP). The NPA will govern the development and implementation of procedures to incorporate historic preservation planning with the critical timing and complex engineering required to optimize the shipyards.

Participation in the NPA

Public Participation

The views of the public are essential to informed federal decision making in the Section 106 process. The regulations implementing Section 106 call for the federal agency official to arrange for public participation appropriate to the subject matter and the scope of the program.

For the SIOP NPA, the Navy is taking steps to inform the public through this publicly accessible website, periodic announcements in local print media, and publishing a notice in the Federal Register.

Participate in the NPA

If you are interested in participating in the NPA, use this link to inform the Navy’s project team: Select Area(s) of NPA Interest.

Comment on the SIOP NPA

Please feel free to provide comments or questions on the SIOP NPA using this email

Signatory Parties

Signatories and Invited Signatories

Consistent with ACHP regulations, the signatory parties to the NPA will include the Navy, the ACHP, and the NCSHPO. Invited signatories include SHPOs and the National Park Service. Please see 36 CFR 800.14(B)(2)(iii) for more information on the roles of signatory and invited signatory parties.

Access the Signatory pages here:

Additional Consulting Parties

What is a Consulting Party?

Under ACHP regulations, in addition to SHPOs, Tribes, and Native Hawaiian Organizations, as applicable, Additional Consulting Parties may include individuals or organizations with a demonstrated interest in the undertaking, including a legal or economic interest, or who are concerned with the undertaking’s effects on historic properties. Consulting Parties will have opportunities to comment during development and implementation throughout the life of the NPA.

Please see Consulting Parties for an updated list of Additional Consulting Parties invited to participate throughout this NPA consultation.

Access the Additional Consulting Parties pages here:

Request to become a Consulting Party

Click here to request to become a Consulting Party.

To provide comments or questions on the SIOP NPA using this email address:

Indicate Your Area of Interest

Click here to indicate which area(s) of interest you have in participating in the NPA.

National Historic Preservation Act
Consultation Meetings

The next SIOP NPA Consulting Meeting #7 is December 17, 2020 from 2:00 p.m. to 3:30 p.m. EST. Please check back periodically for updates to the meeting schedule. To participate, please see the ‘Request to become a Consulting Party’ section above and send in your information. Below are available videos and/or documents from previous consultation meetings. Videos are password protected to manage project participation. To request a password, please email the Navy SIOP NPA archive at and allow 3-5 business days for a response. Thank you.


Please provide official comment on the SIOP NPA using this email address:

Signatories and registered consulting parties may comment on the drafting of the SIOP NPA here.