TANAQ Environmental

Partnering to realize solutions for environmental problems seen and unseen.

environmental services
environmental services
environmental services
environmental services


  • We achieve performance and client objectives in accordance with our contracts.
  • We communicate transparently with our clients and partners.
  • We bring qualified, competent staff to all our projects.
  • We provide a positive experience.

Core Values

Purpose-driven environmental work – We are passionate about the environment, and we have a solid purpose built on a strong foundation with a desire to make the world a better place. 

Safety – We do difficult, challenging work in austere environments with safety as a fundamental priority. The safety of our employees, our partners, and the public will not be compromised in the name of speed or cost. 

Engaging culture – You can be passionate about environmental work and have fun at the same time within a caring company culture that respects individuality and values inclusivity. We self-perform much of our work and provide enjoyable, unique, hands-on experience for our team which results in success for our clients.

Trust and Respect – Strong trust is the basis for all relationships, individual or business-to-business, and we strive to build that trust starting with mutual respect, open communication, and keeping our commitments. 

Transparency – Through honest feedback and collaboration, we humbly tell you what we know, and as importantly, we will candidly tell you what we don’t know, while always providing you with options. 

Agility – As an Alaska Native Corporation we pride ourselves on being responsive and flexible. With a short decision cycle, we can provide our clients and partners with rapid judgments and shortened timelines without sacrificing quality.

Bold Beliefs

  • We practice comprehensive problem-solving from preliminary assessments to site closures.
  • Our people are our credentials. We offer knowledge, experience, and qualifications based on a foundation of Safety, Trust, Transparency, and Agility.
  • We are committed to working safely in challenging environments.
  • Small businesses drive innovation, and we provide our clients with creative solutions and capabilities within their budgets.
  • We only partner with people who share our Core Values. Culture trumps business strategy every time.
  • Alaska Native Corporations are a tool in your toolbox; utilize us to complement your other acquisition tools.

Our Business Entities

8(a) Small Disadvantaged Business Subsidiaries

Small Disadvantaged Business Subsidiaries

Joint Ventures

Project Highlights

PFAS Mitigation, Mountain Home AFB, ID

TANAQ Environmental designed, procured, installed, and operated a potable water treatment system to treat PFAS-contaminated groundwater from a water supply well providing 1,000 gpm of clean water to the MHAFB public water supply system. The system treated groundwater from an existing water supply well with combined PFOS/PFOA concentrations of approx. 300 ng/L. The ion-exchange resin treatment system operated from August 2018 to October 2020, successfully treating approx. 20 million gallons with no breakthrough occurring at the midpoint of any of the three treatment trains.

Performance-Based Remediation (PBR) at MacDill AFB and Avon Park AFR, FL

TANAQ Environmental has completed 95% of PBR activities at five MAFB, APAFR, and FL sites. The PBR goal is Site Closeout (SC) within the 5-year PoP for four sites, and completion of an interim source removal at a fifth site. Within 2.5 years of task order award, TANAQ achieved SC at three sites, met the performance objective: soil removal action at a fourth site, and completed two rounds of enhanced reductive dichlorination (ERD) at a fifth site.

PHASE I REMEDIAL INVESTIGATION FOR PFAS: Luke Air Force Base and Gila Bend Auxiliary Field, AZ

TANAQ Environmental is currently conducting, an $8.3M Phase I RI for Luke AFB for the USACE Los Angeles District. The project includes soil sampling and installation of monitoring wells, installation of lysimeters, on-base and off-base well sampling, development and refinement of complex CSM, and completion of a comprehensive RI to define the nature and extent of per- and polyfluoroalkyl substances (PFAS) contamination at Luke AFB and at two sites at the separate Gila Bend parcel located south of Luke AFB.The RI includes installation of five 650-foot deep wells, and 38 300-foot deep wells at Luke AF Base and 17 350-foot deep wells at the Gila Bend sites.

Key Capabilities

Design, construction, and operation of PFAS treatment systems for drinking water, groundwater, and surface water mitigation

In situ groundwater treatment using enhanced reductive dichlorination (ERD) and chemical oxidation

Soil mixing with chemical oxidation

Phase I PFAS remedial investigations

Comprehensive CERCLA RI/FS at DOD and FUDS sites

Greenhouse gas emissions inventories

Complex stratigraphic investigations and conceptual site model development

Contaminated soil stabilization, removal, transport, and disposal

Post-construction monitoring of facility operation

Resource efficiency management (REM) services

Remedial system design and optimization

NEPA environmental analysis

Engineering evaluations/cost analyses (EE/CAS)

Munitions constituents sampling and analysis

Military munitions response remedial investigations and removal actions, including time critical removal actions (TCRA)

Third-party QA for munitions remedial investigations and removal actions

LTO/LTM of groundwater treatment systems

Revegetation and habitat restoration

UXO construction support

Operational range clearance

Key Customers

U.S. Army Corps of Engineers
U.S. Environmental Protection Agency
U.S. Navy


William Howard
William “Butch” Howard”
Division President, Environmental & Facilities Group
David A. Evans, PG
Senior Director, Technical Operations
Nicole Easter, CSP, CDGP
Health & Safety Manager
Meriam Senoussi, PG
Emerging Contaminants Program Manager
Michelle Vincent, PG
Program Manager for Environmental Compliance Services
Tony Hoffman
Tony Hoffman, PE
Hazardous, Toxic & Radioactive Waste Program Manager
Natalie Gordon
Military Munitions Response Program Manager

How to work with us

Customer Requirements, timeline, and costs are identified, and a SOW is developed.

Contracting Officer contacts SBA for acceptance of ANC 8(a) sole source. 

RFP is prepared and issued to TANAQ Environmental as an ANC 8(a). 

TANAQ Environmental submits proposal to Contracting Officer in response to RFP. 

Contract is negotiated and awarded to TANAQ Environmental and work performance begins. 

Join Our Team / Career Section

Join our Team

Equal Employment Opportunity and Affirmative Action Policy Statement

Tanaq is an Equal Opportunity and Affirmative Action Employer and participates in E-Verify. All employment decisions are based on merit, qualifications, and abilities. We welcome and encourage diversity in our workforce. Our policies provide equal employment opportunity to all employees and qualified applicants without regard to race, color, religion, national origin, sex, age, disability, pregnancy, sexual orientation, gender identity, transgender status, genetic information, protected veteran status, or any other protected characteristic under federal, state, or local laws. For more information, please read our EEO Policy Statement. If you’d like more information on your EEO rights under the law, visit Know Your Rights.


Reasonable Accommodations

Tanaq endeavors to make tanaq.com accessible to all users. If you would like to contact us regarding the accessibility of our website or need assistance completing any part of the application process, please email accommodation@tanaq.com or call 907-272-9886 to request a reasonable accommodation. This contact information is for accommodation requests only and cannot be used to inquire about the status of applications.

Pay Transparency Requirements (Executive Order 13665)

Tanaq is a federal contractor and will not discharge or in any other manner discriminate against employees or applicants because they have inquired about, discussed, or disclosed their own pay or the pay of another employee or applicant. However, employees who have access to the compensation information of other employees or applicants as a part of their essential job functions cannot disclose the pay of other employees or applicants to individuals who do not otherwise have access to compensation information, unless the disclosure is (a) in response to a formal complaint or charge, (b) in furtherance of an investigation, proceeding, hearing, or action, including an investigation conducted by the employer, or (c) consistent with the contractor’s legal duty to furnish information. For additional information, visit Pay Transparency Nondiscrimination Provision.