Why good cultural-resource planning begins before anyone goes into the field
October 9, 2026 | Cultural Resources & Project Delivery
A project team commissions an archaeological survey. The fieldwork is completed, the report is submitted, and everyone moves on to the next milestone.
Then engineering changes the access road. A construction staging area moves. The utility alignment shifts to avoid a biological resource.
Suddenly, the cultural-resources team needs to revisit its work.
This is a familiar challenge in environmental compliance, but it isn’t necessarily evidence of poor planning or inadequate archaeology. Project designs evolve. The important question is whether cultural-resource investigations are coordinated with that evolution.
The difference between a project footprint and an Area of Potential Effects
One of the most important concepts in Section 106 review is the Area of Potential Effects, or APE.
An APE is not necessarily identical to the construction footprint. It encompasses the geographic area within which an undertaking may directly or indirectly affect historic properties, depending on the nature of the undertaking and the resources involved.
That distinction matters.
A transmission project, for example, might involve more than tower locations and conductor alignments. Access roads, temporary workspaces, staging areas, and other supporting facilities may also require consideration.
The federal agency establishes the APE through the Section 106 process, in consultation with appropriate parties. Archaeological survey coverage is then developed to support the identification effort.
When project designs change, the team should evaluate whether the existing APE, survey coverage, and effects analysis remain adequate.
Three opportunities to improve project delivery
First, involve cultural-resource specialists while alternatives are still flexible.
Early records research can help identify areas where additional investigation may be warranted. In California, the California Historical Resources Information System (CHRIS) maintains records of previously documented cultural resources and investigations.
These records provide an important starting point, although the absence of recorded archaeological sites does not establish that an area lacks cultural resources.
Second, coordinate the investigation strategy before committing to fieldwork.
Under Section 106, federal agencies must make a reasonable and good-faith effort to identify historic properties. The appropriate identification methods depend on the undertaking, existing information, consultation, and the nature of potentially affected resources.
Importantly, Tribal knowledge may identify places and values that conventional archaeological records do not adequately capture. Federal agencies have distinct consultation responsibilities that cannot simply be replaced by consultant-led records searches or field surveys.
Third, treat design changes as cultural-resource coordination triggers.
A revised engineering drawing should prompt a straightforward question: Does this change affect the area investigated or the conclusions previously reached?
Sometimes the answer is no. Sometimes targeted additional investigation is appropriate. The goal is to identify that need before construction schedules depend on an outdated understanding of the project.
Better archaeology is better project information
An archaeological report is more useful when it helps a project team make informed decisions—not simply when it documents that fieldwork occurred.
Early coordination, clear geographic information, thoughtful investigation strategies, and communication between engineering and environmental teams can reduce duplicated effort while improving consideration of historic properties.
The objective isn’t to survey everything or to survey as little as possible.
It’s to investigate the right places, at the right time, with enough information to support sound decisions.
Further reading: ACHP Section 106 Applicant Toolkit · ACHP Guidance on Archaeological Consultation · California CHRIS Records Access Guidance.
By including tribal cultural resources early in the California Environmental Quality Act (CEQA) process, the legislature intended to ensure that local and Tribal governments, public agencies, and project proponents would have information available, early in the project planning process, to identify and address potential adverse impacts to tribal cultural resources. By taking this proactive approach, the legislature also intended to reduce the potential for delay and conflicts in the environmental review process. These new rules apply to projects that have a notice of preparation for an environmental impact report or negative declaration or mitigated negative declaration filed on or after July 1, 2015. The new provisions in the Public Resources Code proscribe six specific steps and timelines governing the notice and consultation process. Those steps are summarized below.
California State Public Resources Code (PRC) 5024 requires that all state agencies preserve and maintain state-owned historical resources. Section 5024.5 outlines the process of meeting this mandate. The process gives the State Historic Preservation Officer (SHPO) the authority to review the efforts made by state agencies toward compliance with this law. State agencies must work with the SHPO to show that they are protecting and maintaining the historical resources (the term includes significant prehistoric, historic, ethnographic, and traditional cultural resources) on their Master List and that no development or maintenance projects will adversely impact those resources.