Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

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Creating a Handbook for
Successful No-Effect
and No-Adverse-Effect
Section 106
Determinations

Camilla McDonald
Kate Umlauf
WSP USA Inc.
Kansas City, MO

Terry Klein
SRI Foundation
Corrales, NM

Conduct of Research Report for NCHRP Project 25-65
Submitted June 2024

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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

NCHRP Web-Only Document 412

Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations

© 2025 by the National Academy of Sciences. National Academies of Sciences, Engineering, and Medicine and the graphical logo are trademarks of the National Academy of Sciences. All rights reserved.
Digital Object Identifier: https://doi.org/10.17226/29036

NATIONAL COOPERATIVE HIGHWAY RESEARCH PROGRAM

Systematic, well-designed, and implementable research is the most effective way to solve many problems facing state departments of transportation (DOTs) administrators and engineers. Often, highway problems are of local or regional interest and can best be studied by state DOTs individually or in cooperation with their state universities and others. However, the accelerating growth of highway transportation results in increasingly complex problems of wide interest to highway authorities. These problems are best studied through a coordinated program of cooperative research.

Recognizing this need, the leadership of the American Association of State Highway and Transportation Officials (AASHTO) in 1962 initiated an objective national highway research program using modern scientific techniques—the National Cooperative Highway Research Program (NCHRP). NCHRP is supported on a continuing basis by funds from participating member states of AASHTO and receives the full cooperation and support of the Federal Highway Administration (FHWA), United States Department of Transportation, under Agreement No. 693JJ31950003.

COPYRIGHT INFORMATION

Authors herein are responsible for the authenticity of their materials and for obtaining written permissions from publishers or persons who own the copyright to any previously published or copyrighted material used herein.

Cooperative Research Programs (CRP) grants permission to reproduce material in this publication for classroom and not-for-profit purposes. Permission is given with the understanding that none of the material will be used to imply TRB, AASHTO, APTA, FAA, FHWA, FTA, GHSA, or NHTSA endorsement of a particular product, method, or practice. It is expected that those reproducing the material in this document for educational and not-for-profit uses will give appropriate acknowledgment of the source of any reprinted or reproduced material. For other uses of the material, request permission from CRP.

DISCLAIMER

The opinions and conclusions expressed or implied in this report are those of the researchers who performed the research. They are not necessarily those of the Transportation Research Board; the National Academies of Sciences, Engineering, and Medicine; the FHWA; or the program sponsors.

The Transportation Research Board does not develop, issue, or publish standards or specifications. The Transportation Research Board manages applied research projects which provide the scientific foundation that may be used by Transportation Research Board sponsors, industry associations, or other organizations as the basis for revised practices, procedures, or specifications.

The Transportation Research Board, the National Academies, and the sponsors of the National Cooperative Highway Research Program do not endorse products or manufacturers. Trade or manufacturers’ names appear herein solely because they are considered essential to the object of the report.

The information contained in this document was taken directly from the submission of the author(s). This material has not been edited by TRB.

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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

The National Academy of Sciences was established in 1863 by an Act of Congress, signed by President Lincoln, as a private, nongovernmental institution to advise the nation on issues related to science and technology. Members are elected by their peers for outstanding contributions to research. Dr. Marcia McNutt is president.

The National Academy of Engineering was established in 1964 under the charter of the National Academy of Sciences to bring the practices of engineering to advising the nation. Members are elected by their peers for extraordinary contributions to engineering. Dr. John L. Anderson is president.

The National Academy of Medicine (formerly the Institute of Medicine) was established in 1970 under the charter of the National Academy of Sciences to advise the nation on medical and health issues. Members are elected by their peers for distinguished contributions to medicine and health. Dr. Victor J. Dzau is president.

The three Academies work together as the National Academies of Sciences, Engineering, and Medicine to provide independent, objective analysis and advice to the nation and conduct other activities to solve complex problems and inform public policy decisions. The National Academies also encourage education and research, recognize outstanding contributions to knowledge, and increase public understanding in matters of science, engineering, and medicine.

Learn more about the National Academies of Sciences, Engineering, and Medicine at www.nationalacademies.org.

The Transportation Research Board is one of seven major program divisions of the National Academies of Sciences, Engineering, and Medicine. The mission of the Transportation Research Board is to mobilize expertise, experience, and knowledge to anticipate and solve complex transportation-related challenges. The Board’s varied activities annually engage about 8,500 engineers, scientists, and other transportation researchers and practitioners from the public and private sectors and academia, all of whom contribute their expertise in the public interest. The program is supported by state departments of transportation, federal agencies including the component administrations of the U.S. Department of Transportation, and other organizations and individuals interested in the development of transportation.

Learn more about the Transportation Research Board at www.TRB.org.

Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

COOPERATIVE RESEARCH PROGRAMS

CRP STAFF FOR NCHRP WEB-ONLY DOCUMENT 412

Monique R. Evans,Director, Cooperative Research Programs

Waseem Dekelbab,Deputy Director, Cooperative Research Programs, and Manager, National Cooperative Highway Research Program

Michael Brooks,Senior Program Officer

Dajaih Bias-Johnson,Senior Program Assistant

Natalie Barnes,Director of Publications

Heather DiAngelis,Associate Director of Publications

Jennifer Correro,Assistant Editor

NCHRP PROJECT 25-65 PANEL
Field of Transportation Planning—Area of Human and Natural Environment

Karen L. Daniels,HNTB, Nashville, TN (Chair)

Jacqueline Farrington,California Department of Transportation, Bayside, CA

Marc Holma,Virginia Department of Historic Resources, Richmond, VA

Mark McMillan,Jacobs, Wethersfield, CT

Marc Munch,Idaho Transportation Department, Boise, ID

Antony F. Opperman,Williamsburg, VA

Jessica Richardson,Louisiana Department of Transportation and Development, Baton Rouge, LA

Lyle Torp,The Ottery Group, Silver Spring, MD

David S. Clarke,FHWA Liaison

AUTHOR ACKNOWLEDGMENTS

The authors would like to thank the project consultants and the staff of the Departments of Transportation and State Historic Preservation Offices of Arizona, Arkansas, California, Colorado, Connecticut, Georgia, Idaho, Illinois, Indiana, Iowa, Kentucky, Maryland, Michigan, Minnesota, Missouri, Montana, Nebraska, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, Tennessee, Texas, Utah, Vermont, Virginia, Washington State, West Virginia, Wisconsin, Wyoming, and the District of Columbia for contributing their time and expertise to this project.

Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

SUMMARY

The objective of National Cooperative Highway Research Program (NCHRP) Project 25-65, Preparing Successful No-Effect and No-Adverse-Effect Section 106 Determinations: A Handbook for Transportation Cultural Resource Practitioners, was to produce a handbook for cultural resources professionals at state Departments of Transportation (DOTs) and federal and local transportation agencies to aid in developing and effectively communicating Section 106 determinations for findings of No Effect and No Adverse Effect to historic properties from transportation projects.

The project team conducted a literature review to identify and evaluate available information on Section 106 practices across the country concerning these types of effects findings for a wide range of project types and classes of historic properties.

A state of practice survey, beginning with an online survey, was then conducted to delve into each state DOT and Federal Highway Administration (FHWA) Division Office’s approach to making these findings of effect. The online survey was also sent to a sample of local transportation organizations. To obtain the views and experiences of consulting parties in the Section 106 review process, the online survey was also sent to State Historic Preservation Offices (SHPOs), Tribes and Native Hawaiian organizations (NHOs). Follow-up interviews were conducted, based on the online survey results, with a sample of state DOTs, SHPOs, FHWA Division Offices, private-sector consultants who work for state DOTs, the Advisory Council on Historic Preservation (ACHP) and the Federal Preservation Officers (FPOs) for FHWA, National Park Service, and the Federal Railroad Administration.

This conduct of research report presents a summary of the literature review and state of practice survey conducted to produce a handbook that highlights successful practices and approaches for making findings of No Effect and No Adverse Effect on federally funded or approved transportation projects.

The high response rate for the online survey, followed by the interviews, resulted in a rich dataset for understanding the application of findings of No Effect and No Adverse Effect among the FHWA, state DOTs, SHPOs, THPOs, a few other consulting parties, and private-sector consultants. The online survey also highlighted many of the challenges encountered in making and reviewing these effect findings. Subsequent interviews explored in more depth the results of the online survey, providing the foundation for the handbook for transportation cultural resources practitioners on preparing and effectively communicating findings of No Effect and No Adverse Effect.

Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

TABLE OF CONTENTS

Summary

List of Figures

List of Tables

List of Acronyms and Abbreviations

Introduction

Project Approach

Literature Review

Section 106 Guidance, Publications, and Cultural Resource Manuals

Statewide Delegation Programmatic Agreements

Forms and Tools for Making Effects Determinations

Working and Engaging with Section 106 Consulting Parties on Effect Determinations

Best Practices for Documenting Determinations of No-Effect and No-Adverse-Effect Findings

Documentation Requirements in 36 CFR § 800.11

Describing the Undertaking

Defining the Area of Potential Effects

Evaluation of National Register Eligibility and Identifying Character-Defining Features

Boundaries of a Historic Property

No Adverse Effect Findings Based on the Use of Conditions

Commonalities in Assessing and Documenting Findings of No Effect and No Adverse Effect

State of Practice Survey

Online Survey Results (Agencies and Organizations/Consultants)

Resources

Practices and Approaches

Experiences

Consultation and Communication

Consideration of Effects During Project Planning

Archaeological Sites and Traditional Cultural Properties/Places (TCPs)

Online Survey Results (THPOs)

Tribal Consultation and Engagement

Practitioner Interviews: Practices and Experiences

Interviewing Practitioners

Resources Used for Making Findings of No Effect and No Adverse Effect

Elements of a Well-Reasoned and Defensible Finding of No Effect and No Adverse Effect

Indirect and Cumulative Effects

Using Conditions to Achieve a Finding of No Adverse Effect

Challenging Projects, Historic Properties, and Findings of No Effect and No Adverse Effect

Archaeological Sites and Traditional Cultural Properties/Places

Consultation and Communication

Tribal Consultation and Engagement

Consideration of Effects to Historic Properties During Planning

Alternative Approaches to Project Delivery

Case Study Summary

Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

Summary of Findings

Areas for Future Research

References Cited and Bibliography

APPENDIX A: State of Practice Survey Questionnaire (Agencies) and Response Matrix

APPENDIX B: State of Practice Survey Questionnaire (Organizations/Consultatns) and Response Matrix

APPENDIX C: State of Practice Survey Questionnaire (Tribes/NHOs) and Response Matrix

APPENDIX D: List of Interviewees and Interview Questionnaires

APPENDIX E: Forms and Tools

NCHRP Web-Only Document 412 contains the conduct of research report for NCHRP Project 25-65 and accompanies NCHRP Research Report 1133: Preparing Successful No-Effect and No-Adverse-Effect Section 106 Determinations: A Handbook for Transportation Cultural Resource Practitioners. Readers can read or purchase NCHRP Research Report 1133 on the National Academies Press website (nap.nationalacademies.org).

Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.

LIST OF ACRONYMS AND ABBREVIATIONS

AASHTOAmerican Association of State Highway and Transportation Officials
ACHPAdvisory Council on Historic Preservation
ACRAAmerican Cultural Resources Association
APEArea of Potential Effects
CDFCharacter-defining feature
CEQCouncil on Environmental Quality
CLGCertified Local Government
CPConsulting party
CSOCalifornia DOT Cultural Studies Office
DOTDepartment of Transportation
EAEnvironmental Assessment
EISEnvironmental Impact Statement
ESAEnvironmentally sensitive area
FHWAFederal Highway Administration
FNAE-SCFinding of No Adverse Effect with Standard Conditions
FPOFederal Preservation Officer
FRAFederal Railroad Administration
HOPHighway occupancy permit
HUDDepartment of Housing and Urban Development
LPALocal Public Agency
NAENo Adverse Effect
NHLNational Historic Landmark
NAPCNational Alliance of Preservation Commissions
NATHPONational Association of Tribal Historic Preservation Officers
NHONative Hawaiian Organization
NCHRPNational Cooperative Highway Research Program
NEPANational Environmental Policy Act
NHPANational Historic Preservation Act
NPSNational Park Service
NRHP/National RegisterNational Register of Historic Places
OSANorth Carolina Office of State Archaeology
PAProgrammatic Agreement
PIPublic involvement
PQSProfessionally qualified staff
ROWright-of-way
SCASociety of Commercial Archaeologists
SERStandard Environmental Reference
SHPOState Historic Preservation Office
SOISSecretary of the Interior’s Standards for Treatment of Historic Properties
SRFScoping Request Form
STIPState Transportation Improvement Plan
TCPTraditional Cultural Property/Place
THPOTribal Historic Preservation Officer
TRBTransportation Research Board
USACEU.S. Army Corps of Engineers
Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Suggested Citation: "Front Matter." National Academies of Sciences, Engineering, and Medicine. 2025. Creating a Handbook for Successful No-Effect and No-Adverse-Effect Section 106 Determinations. Washington, DC: The National Academies Press. doi: 10.17226/29036.
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Next Chapter: Introduction
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