PROVIDING COMPREHENSIVE PFAS
TECHNICAL
EXPERTISE
Tehama provides expert federal programmatic PFAS data management and technical solutions
/// Tepa, LLC’s Environment service line includes three tribally owned small businesses: Tehama Technical Services, LLC (Tehama TS) and Tehama ECS, LLC (Tehama ECS), both 8(a)-certified, and Tehama, LLC (Tehama). All three are Indian Small Business Economic Enterprises (ISBEEs) and wholly owned subsidiaries of Tepa, LLC.
As 8(a) small businesses, we welcome the opportunity to negotiate a sole source contract with the government. Under 13 Code of Federal Regulations (CFR) 124.506(b), sole source federal contracts may be awarded to tribally owned 8(a)certified small businesses for up to $25M or $100M for Department of Defense (DoD) agencies. This CFR provision exempts contracts to 8(a) companies owned by Indian or Alaska Native tribes from the competitive lower dollar limit thresholds of other 8(a) contracts. This arrangement expedites delivery of the required services, reduces the workload demand on the government of executing another full acquisition process, and allows us to partner to optimize benefits to your organization.
PFAS Technical Expertise
(210) 428-7158 PFAS
Site Inspections, Remedial Investigations, and Off-Base Drinking Water Sampling
Conceptual Site Models (CSMs) and Drinking Water Protection Studies (DWPSs)
Sherry Gibson PE, PMP President, Engineering
mobile (719) 437-5131
Matt Anding PG, GISP Vice President,
OMAHA, 772ND SQUADRON SUPPORT
Basewide Hydrogeologic PFAS Conceptual Site Models at 43 Installations | Nationwide 772nd Support Squadron | $10M Firm Fixed Price | Developing CSMs for 43 USAF Installations
SYSTEMATIC/STREAMLINED INITIAL ASSESSMENTS
Tehama utilizes proactive program-management geospatial dashboards to support federal clients in site identification and prioritization, systematic implementation, and providing site-specific and programmatic risk assessments. This approach allows federal clients to more rapidly and accurately streamline initial site assessments, capture current knowledge of historical and ongoing uses of perand polyfluoroalkyl substances (PFAS), and develop a critical path forward in their program’s approach.
DETAILED INVESTIGATION OF HISTORICAL AND CURRENT USES
Tehama has extensive experience conducting PFAS Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Preliminary Assessments (and equivalent evaluations under alternate regulatory programs), providing high-quality technical analyses and rapid determinations of whether a site has the potential for PFAS contamination. Our reputation for excellence is built on advanced data automation methods, real-time analytics, and Geographic Information System (GIS)-based decision tools that transform complex site history, current operations, and environmental datasets into actionable insights for decision making and regulatory compliance.
DEVELOPMENT/EXECUTION OF ENVIRONMENTAL SAMPLING STRATEGIES
Tehama ECS excels in developing and executing environmental sampling strategies that strictly adhere to state of the practice and federal clients’ sampling protocols, leveraging robust and evolving CSMs to guide targeted investigations and reduce site uncertainties.
Tehama has developed the most robust PFAS CSM program, providing hydrogeologic contaminant migration analysis utilizing Environmental Sequence Stratigraphy (ESS) at over 50 DoD installations. This expertise has supported DoD clients in synthesizing complex datasets, communicating site conditions, and supporting strategic decision-making throughout the project lifecycle.
STORAGE AND DISPOSAL COMPLIANCE
Tehama is a recognized leader in implementing the Environmental Protection Agency’s (EPA’s) storage and disposal guidance for PFAS-impacted materials, ensuring full compliance with Resource Conservation and Recovery Act (RCRA), Department of Transportation (DOT), and National Defense Authorization Act (NDAA) Section 343 requirements through rigorous documentation, certified packaging, and coordination with EPA regional off-site coordinators.
COLLABORATIVE/EFFECTIVE REGULATORY AND STAKEHOLDER ENGAGEMENT
Tehama specializes in stakeholder engagement by providing critical evaluations supporting senior leadership decision-making, supporting regulatory engagement through strategic planning and frequent briefings to gain early buyin and consensus, and public outreach by developing engagement plans and communicating findings to the public.
TEHAMA NAICS CODES
562910, 541620, 541330, 519120, 541310, 541320, 541340, 541350, 541360, 541410, 541420, 541611, 561210, 562112, 562211
CONTRACTING VEHICLES*
USACE Sacramento District
SATOC | Capacity: $49.9M
Term/Length of Contract: 2023-2028
Contract Number: W9123824D0001
USACE Louisville District
SATOC ECS IDIQ | Capacity: $16M
Term/Length: 2023-2028
Contract Number: W912QR23C0024
USACE Omaha District
IDIQ SATOC ECS | Capacity: $20M
Term/Length of Contract: 2022-2028 Contract Number: W9128F22R0057
8(a) Rapid Response #6 SATOC Capacity: $35M
Term/Length of Contract: 2023-2031 Contract Number: W9128F00R0023
Department of the Air Force
AE NEXT | Capacity: $200M
Term/Length of Contract: 2021-2026
Contract Number: FA890321D0039
Architect-Engineer Environmental Services (AE-ES) 2023 | Capacity: $1.5B
Term/Length of Contract: 2025-2035 Contract Number: FA890325D0015
USACE St. Paul District
QA Inspection Svcs. | Capacity: $10M
Term/Length of Contract: 2021-2026
Contract Number: W912ES22D0004
USACE Kansas City District
8(a) ECS IDIQ | Capacity: $9.9M
Term/Length of Contract: 2021-2026 Contract Number: W912DQ21D3014
USACE Mobile District
ERS MATOC | Capacity: $219M
Term/Length of Contract: 2023-2033 Contract Number: W9127823D0004
GSA
Small Business | Capacity: $1M per SIN
SINs: 541620, 541330ENG, 562910REM
Term/Length of Contract: 2018-2028
Contract Number: 47QRAA18D00A4
OASIS+ SB IDIQ
Term/Length of Contract: 2024-2029
Contract Number: 47QRCA25DS865
USDA Forest Service
ALF Environmental Response Capacity: $7M
Term/Length of Contract: 2024-2029
Contract Number: 12444325A0014
*Current as of October 2025
Air Force and Guard Programmatic Technical Support | Nationwide USACE Omaha and USACE Louisville | $35.6M | 200+ Active/Guard/BRAC Installations
As the principal provider of technical services for both the Air Force Civil Engineering Center (AFCEC) and Air National Guard Readiness Center (ANGRC) PFAS Investigation and Response Programs since 2016, Tehama provides expert federal programmatic PFAS data management and technical solutions. Tehama developed the DoD’s largest and most comprehensive geospatial database of all PFAS investigation and response data across United States Air Force (USAF) Active/Reserve/Space, Air National Guard, and Base Realignment and Closure (BRAC), which is utilized for proactive program management, interpretation, reporting, and predictive analysis. Through centralized geospatial data management dashboards, Tehama provides federal clients with real-time and accurate data to efficiently reference and analyze PFAS data, greatly increasing situational awareness and effectiveness of strategy, planning, and response efforts. Tehama has developed multiple complex programmatic and installation-specific data dashboards to maintain over 20 million records, including PFAS site prioritization, investigation statuses and schedules, analytical chemistry, land use, response actions, treatment technology, compliance records, hydrogeologic parameters, well construction, site/location, and monitoring data. Data streams can evolve in real-time to meet new program requirements and strategic planning. Tehama’s innovative PFAS programmatic environmental data management technology has helped shift federal clients’ PFAS response from a reactive to a successful and efficient proactive management approach.
PROGRAMMATIC AND INSTALLATION-SPECIFIC PFAS DATA MANAGEMENT TOOL CAPABILITIES:
• Proactive data management
• Complex dataset visualization
OFFICE LOCATIONS
• Data analytics
• Reporting tools
• Statistical summaries
• Advanced querying
• GIS webmapping
• Data input from disparate sources
SMALL BUSINESS RELATIONSHIP WITH LARGE BUSINESS RESOURCES
Tepa, LLC is 100% owned by the Paskenta Band of Nomlaki Indians and includes 20 separate businesses providing environmental, engineering, technology, industrial, and construction services. Our combined Tepa Companies share a common administrative and executive management team to ensure clients receive the greatest efficiencies, cost benefits, technical expertise, and quality on all projects we undertake.
Since 2005, the Tepa Companies have successfully delivered projects to tribal, federal, state, local, and commercial clients nationwide, on time and within budget. We utilize all the resources, capabilities and experience of our Tepa Companies to deliver comprehensive successful solutions with small-company flexibility and large-company processes and controls.