What Is a Cultural Resources Survey?
A cultural resources survey is the archaeological and historic-architecture study identifying historic properties that a project might affect — required under Section 106 of the National Historic Preservation Act for federally connected projects and under many state laws regardless. The survey determines whether the project area contains archaeological sites, historic buildings, or traditional cultural properties, and what the project must do about them.
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What the survey involves
Records searches (known sites, historic maps, tribal consultation lists), pedestrian field survey (archaeologists walking transects looking for artifacts and features), subsurface testing (shovel test pits where buried deposits are likely), and historic building evaluations (structures 50+ years old assessed against National Register criteria). The report recommends: no historic properties affected, or eligibility assessments for what was found.
When it is required
Federal nexus projects (Section 106): 404 permits, federal funding, federal land. Many states extend the requirement to state-permitted projects (California's CEQA, for example, covers cultural resources for discretionary projects). Tribal consultation is a parallel requirement — federally recognized tribes consult on undertakings affecting their ancestral lands. Lenders and insurers on large projects often require the survey regardless of legal triggers.
Findings and schedule impact
No findings: the survey clears the project, often within the NEPA/CEQA timeline. Significant finds: data recovery excavations (months, $100,000+), project redesign to avoid the site, or monitoring during construction (an archaeologist on site during grading — standard condition in sensitive areas). The schedule strategy is surveying early — discoveries during grading trigger stop-work orders and the most expensive archaeology.
The bottom line
Cultural resources surveys identify archaeological and historic properties before construction — required for federal-nexus and many state projects. Survey early; discoveries during grading cause stop-work orders.
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