Solutions Natural Resources Cultural Resources

Cultural Resources

Protecting what history left behind before development moves forward

Employees collecting water samples in a stream.

Layered red sandstone rock formations in desert landscape under blue sky

INTRO

Navigating cultural resources with certainty

Cultural resources require thoughtful navigation to balance preservation with progress. At Onterris, we help clients navigate cultural considerations with confidence; identifying, evaluating and managing archaeological and historic assets while meeting complex regulatory requirements.

Our team guides agency and stakeholder coordination, consultation and documentation with ease. Our archaeologists and cultural resources specialists combine technical expertise with practical project experience to deliver clear, defensible solutions that support compliance, minimize risk and respect the cultural significance of every site.

Supporting Your Industry

Every sector leaves a footprint. See how we help manage yours.

Energy

Government

Infrastructure

Mining & Minerals

Transportation

why it matters

Preserving cultural heritage in a modern landscape

Preservation decisions made early help avoid irreversible loss of heritage
Respecting cultural heritage strengthens trust and long-term project legitimacy
Tribal and community knowledge can reveal resources that standard records do not capture
Cultural resources can drive permitting risk, schedule impacts and community concern
Early identification and documentation reduce the likelihood of late-stage redesign
Clear consultation helps align agencies and stakeholders around a defensible path forward
Cultural resources connect communities to place, identity and shared history

Solutions

Tribal Services

Tribal communities face unique environmental challenges that require culturally sensitive, locally informed and technically advanced solutions. Our team brings decades of experience across the U.S. working directly with Tribal communities to advance housing, economic development and fee-to-trust projects.

See how we partner with Tribal communities.

Natural rock arch formation within a Tribal landscape, reflecting the cultural and environmental significance of Indigenous lands.

Forest-covered mountain valley with evergreen trees in the foreground, distant peaks, and a partly cloudy blue sky.

Close-up of rocky desert terrain with a feather standing upright among stones and layered hills in the background.

Close-up view of a blue dragonfly resting on a thin stem with blurred rocky ground in the background.

Managing cultural resources compliance across the full project life cycle

Onterris supports cultural resources and cultural heritage considerations from desktop review and field surveys through reporting, consultation, construction monitoring and mitigation planning.

Cultural resources regulatory expertise

Navigate cultural resources requirements across federal, state and Tribal frameworks, including the National Environmental Policy Act (NEPA), the California Environmental Quality Act (CEQA) and Section 106 of the National Historic Preservation Act, with defensible surveys, impact evaluations, consultation support and documentation that aligns with agency expectations from project initiation through completion.

Indigenous and Native community partnerships

Onterris partners with Indigenous communities and Tribal governments to deliver culturally informed environmental and cultural resources support that respects sovereignty and advances community priorities. Through engagement, collaborative planning and integration of traditional ecological knowledge, we support meaningful participation, regulatory compliance and project development aligned with community values.

Archaeological surveys for historic and prehistoric resources

Architectural history documentation and analysis

Construction monitoring, reporting and inadvertent discovery planning

Landscape view of a marsh or wetlands type environment

Areas of expertise

Cultural resources expertise that complements your project’s progress

Explore how we enable compliant project delivery that keeps review, coordination and field requirements moving in step with your schedule. Don’t see what you are looking for? Reach out to learn about our full suite of cultural resources services.

NEPA and CEQA documentation support

Desktop reviews and archival research

Archaeological and architectural surveys

Historic and archaeological resource inventories

National Register of Historic Places eligibility determinations

State Historic Preservation Office (SHPO) agency relationships

Construction monitoring and reporting

Mitigation measures, discovery and management plans

Explore Related Content

Gabe in a high-visibility vest overlooks a coastal harbor and mountains.

Employee Spotlight

Preserving The Past While Building the Future

For archaeologist Gabriel Robles, Catalina Island, California, is home and a landscape rich with thousands of years of cultural history. See how he works alongside project teams, tribal groups and the City of Avalon to protect cultural resources while helping essential infrastructure move forward responsibly.

Hillside with boats and equipment near a mountain path.

Case study

2 min read

Accelerating Brownfield Readiness Across Remote Former Defense Sites

Grant strategy and field execution advanced cleanup planning for World War II legacy contamination on Alaska Native Corporation lands

Environmental scientist wearing a hard hat and safety vest conducting a site assessment near a wetland area.

Article

6 min read

Heather Patti

Why Early Site Due Diligence Matters for Greenfield Renewable Projects

For renewable energy developers, early assessments identify environmental risk and set the foundation for successful, sustainable and cost-saving developments