The Tepa Companies provide a full suite of environmental capabilities and services that meet the evolving needs of our clients. Our service lines include environmental remediation, per- and polyfluoroalkyl substances (PFAS) investigation and treatment, Military Munitions Response Programs (MMRPs), environmental compliance, and natural and cultural resources, including forestry. Each business line is supported by credentialed subject matter experts, program and project managers, chemists, and specialists in data management and visualization.
Environmental Services
Our purpose-driven environmental professionals have experience supporting every aspect of your project. Our diverse portfolio of services means you can work with one company for multiple environmental needs—saving you time and money.
Environmental remediation
PFAS and other emerging contaminants
Munitions response
High-resolution site characterization
Hazardous, toxic, and radioactive waste (HTRW) investigation and remediation
Long-term monitoring and remedy optimization
Environmental planning, compliance, and permitting
Cultural and natural resources
Environmental Remediation
Tepa’s environmental companies have successfully executed a wide range of complex investigation and remediation projects for multiple U.S. Army Corps of Engineers districts, the Air Force Civil Engineer Center, the Department of the Interior, the U.S. Environmental Protection Agency, the Navy, and other federal clients. Our federal experience has given us a deep understanding of how to successfully deliver projects by meeting and exceeding performance objectives and regulatory requirements, maintaining schedules, managing risks, and controlling costs, all while ensuring high-quality technical execution and strict adherence to rigorous quality and safety standards.
Tepa’s environmental remediation services are designed to effectively address and mitigate environmental hazards. Our team specializes in HTRW sites and follows regulatory processes that include the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), the Resource Conservation and Recovery Act (RCRA), and state risk-based remediation programs.
We have extensive experience conducting investigations and designing and implementing remedial actions at sites impacted by legacy and emerging contaminants, including PFAS. Our expertise spans a wide range of technologies and approaches, such as high-resolution site characterization, monitored natural attenuation, enhanced bioremediation, in situ chemical reduction, in situ chemical oxidation, pump-and-treat and groundwater recirculation, air sparging, soil vapor extraction, and soil removal.
Specialties
RCRA and CERCLA assessments and investigations
Specialized environmental conceptual site development/refinement
Remedial action design, construction support, and permitting
Remediation system design and installation
Remediation system operations and maintenance
Emergency response
PFAS Technical Expertise and Data Management & Visualization
PFAS, often called “forever chemicals,” can be found in water, soil, air, and even in consumer products. The assessment, monitoring, and possible remediation of these substances can be challenging in the evolving understanding of this emerging contaminant.
Tepa’s environmental companies have successfully executed a wide range of complex technical PFAS support for the U.S. Air Force (USAF) nationwide. Our team of experts delivers the expertise needed to navigate the rapidly changing PFAS regulatory landscape, offering technical execution support that aligns with federal, state, and U.S. Department of Defense (DoD) requirements.
The Tehama, LLC (Tehama) team has extensive experience partnering with the USAF to address challenges at complex emerging contaminant sites. This includes conducting site-specific and programmatic technical evaluations that support senior leadership decision-making and provide expert technical guidance for engaging the regulatory community, the public, and Congressional delegations.
Tehama developed the DoD’s largest and most comprehensive geospatial database of all PFAS investigation and response data across USAF, Active, Reserve, Space, Air National Guard, and Base Realignment and Closure (BRAC) installations. This database is used for proactive program management, interpretation, and predictive analysis. Tehama also leads the DoD’s most robust PFAS conceptual site model (CSM) program, providing hydrogeologic contaminant migration analysis at more than 50 DoD installations.
Specialties
CERCLA site inspections, remedial investigations, and drinking water assessments
Environmental CSM development and refinement
Data management
GIS data visualization
Regulatory compliance
Environmental Compliance
With today’s complex environmental compliance regulations and programs, you need the guidance of a highly experienced team. Tehama provides base-wide fence-to-fence comprehensive technical environmental compliance support to comply with Executive Orders and federal, state, and local environmental regulations, statutes, and policies.
Our services include routine field inspections, sample collection, data gathering, equipment inventory management, preparation of permit applications, development of regulatory reports, and maintenance of compliance program guides for ongoing operational needs.
Hazardous materials management and pollution prevention program support
Solid and hazardous waste management
Stormwater management
Net zero facilitation
Risk management
Cultural and Natural Resources
Our team is well-versed in National Environmental Policy Act (NEPA) compliance and planning, including full-range NEPA document preparation, stakeholder outreach and engagement, Air Conformity Analysis, and agency coordination. Tehama is known for providing exemplary conservation services such as cultural resources management, architectural history, ecological modeling, and protected species studies and management.
We have successfully supported the U.S. Department of Agriculture and DoD with State Historic Preservation Office (SHPO) coordination and Section 106 compliance, as required, and our cultural resources experts have decades of experience supporting agencies with consultation and working with SHPOs and other interested parties. With support of qualified teaming partners, we have experience preparing Biological Assessments (BAs), including programmatic BAs, in accordance with Section 7 of the Endangered Species Act as well.
Specialties
NEPA program support and document preparation
Development of the Description of Proposed Action and Alternatives
Environmental Impact Statements and Environmental Assessments
Findings of No Significant Impact
Environmental baseline surveys
Integrated Natural Resources Management Plans and Cultural Resource Management Plans, including site surveys
Arbor plans
Fire management plans
Cemetery surveys
Master Planning
Installation Development Plans
Area Development Plans
Facility Utilization Studies
Facility Condition Assessments
Planning Charrette Reports
Concept Charrette Reports
Compliance with:
Unified Facilities Criteria
Military Construction Programming Requirements
Agency-Specific Standards
Air Force Instruction 32-1015
Naval Facilities Engineering Systems Command Basic Facility Requirements Guidance
Military Munitions Response Program
MMRPs play a critical role in cleaning up current and former military sites that may contain discarded munitions or unexploded ordnance (UXO). By investigating the site to evaluate potential risks, safely removing hazardous items, and protecting public safety from chemicals or ordnances, our team of munitions response (MR) experts helps return land to safe and productive use.
Tepa’s environmental suite of companies have experience with all phases of MR work, from Preliminary Assessment to Remedial/Removal Action and long-term monitoring. With support from our geophysics partners, we have the capability to perform all aspects of MR work, including analog and digital geophysics, dynamic one-pass advanced geophysical classification, incremental sampling, drone-based site investigations, and underwater investigations/remediation. All munitions and explosives handling is conducted under our Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) permit # 5-CO-005-33-6F-00965.
Military Master Planning
Our planners have supported projects across the DoD—including for the Air Force, Navy, Space Force, and Army—as well as other federal clients. Our Facility Condition Assessment capabilities are integrated into planning processes to ensure decisions are grounded in accurate assessments of building systems, lifecycle condition, and deferred maintenance needs. Whether supporting long-range installation planning or project-specific programming efforts, Tepa Professional Solutions, LLC (Tepa PS) brings the experience, tools, and multidisciplinary collaboration necessary to develop holistic and defensible solutions that align with mission requirements and installation sustainability goals.
