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National Historic

Working with
Section 106

Federal, State, & Tribal Programs

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Home arrow Working with Section 106 arrow Users Guide arrowSection 106 Flow Chart
Section 106 Regulations Flow Chart

Click on parts of the flow chart for more information. (Flow chart best viewed in Netscape 4.0 or higher)

Initiate Section 106 Process
Establish undertaking
Identify appropriate SHPO/THPO *
Plan to involve the public
Identify other consulting parties
No undertaking/no potential to cause effects

Undertaking is type that might affect historic properties
Identify Historic Properties
Determine scope of efforts
Identify historic properties
Evaluate historic significance
No historic properties affected

Historic properties are affected
Assess Adverse Effects
Apply criteria of adverse effect
No historic properties adversely affected

Historic properties are adversely affected
Resolve Adverse Effects
Continue consultation
Memorandum of Agreement


Key Elements of the Section 106 Process
The Roles of Participants
Involving the Public

Click here to view all flow chart explanatory
material in one long document—suitable for printing

* The regulations define the term "THPO" as those tribes that have assumed SHPO responsibilities on their tribal lands and have been certified pursuant to Section 101(d)(2) of the NHPA. Nevertheless, remember that tribes that have not been so certified have the same consultation and concurrence rights as THPOs when the undertaking takes place, or affects historic properties, on their tribal lands. The practical difference is that during such undertakings, THPOs would be consulted in lieu of the SHPO, while non-certified tribes would be consulted in addition to the SHPO.

Updated February 12, 2001

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