TANAQ Environmental

Partnering to realize solutions for environmental problems seen and unseen.

About the firm

TANAQ Environmental is St. George TANAQ Corporation's environmental consulting and engineering division. TANAQ Engineering & Sustainability, LLC and TANAQ Environmental, LLC specialize in the investigation and cleanup of Hazardous, Toxic, and Radioactive Waste (HTRW) sites, per- and polyfluoroalkyl substances (PFAS) assessment and treatment system design, Military Munitions Response Program (MMRP) support, and CERCLA remedial investigations and feasibility studies for the U.S. Army Corps of Engineers, EPA, U.S. Navy, and commercial clients nationwide.

Firm type: Environmental Engineering

Credentials

ISO 9001-2015

People

William "Butch" HowardPresident, Environmental & Facilities Division

Massoud KarimiGeneral Manager

Naja BradshawOperations Manager

Jordan KesselerEnvironmental Program Manager

David A. EvansSenior Director, Technical Operations

Natalie GordonMilitary Munitions Response Program Manager

Capabilities

PFAS Investigation & Remediation

Full-scope PFAS services from Phase I remedial investigations through treatment system design, procurement, installation, and long-term operation.

Phase I PFAS remedial investigations
PFAS treatment system design and installation for drinking water, groundwater, and surface water
Ion-exchange resin treatment train design and operations
Long-term operations and monitoring (LTO/LTM) of groundwater treatment systems

HTRW Site Investigation & Cleanup

Comprehensive investigation and remediation of contaminated sites under CERCLA, including active military bases, Formerly Used Defense Sites (FUDS), and BRAC facilities through performance-based contracts.

CERCLA remedial investigations and feasibility studies (RI/FS)
Performance-based remediation contracts (PBR) through site closure
Engineering evaluations and cost analyses (EE/CA)
Complex stratigraphic investigations and conceptual site model development
In situ groundwater treatment using enhanced reductive dichlorination (ERD) and chemical oxidation
Soil mixing with chemical oxidation
Contaminated soil stabilization, removal, transport, and disposal
Remedial system design and optimization

Military Munitions Response

Munitions response investigations, removal actions, and quality assurance supporting the Military Munitions Response Program (MMRP) at active ranges, FUDS, and BRAC sites.

Military munitions response remedial investigations and removal actions
Time-critical removal actions (TCRA)
Third-party QA for munitions remedial investigations and removal actions
Munitions constituents sampling and analysis
UXO construction support and operational range clearance

Environmental Compliance & Program Support

Regulatory compliance, environmental planning, and long-term program management for federal agencies and commercial clients.

NEPA environmental analysis
Greenhouse gas emissions inventories
Resource efficiency management (REM) services
Post-construction monitoring of facility operation
Revegetation and habitat restoration

Industries

Defense · Federal · Environmental & Remediation · Water Supply · Water Resources · Waste Management

Projects

PFAS Mitigation, Mountain Home AFB, ID

Mountain Home AFB, ID · Defense · 2020 · Client: U.S. Air Force

Project details

Designed, procured, installed, and operated an ion-exchange resin treatment system treating PFAS-contaminated groundwater at 1,000 gpm from the MHAFB public water supply well. Combined PFOS/PFOA concentrations of approximately 300 ng/L were treated in three treatment trains, successfully processing approximately 20 million gallons from August 2018 to October 2020 with no breakthrough.

Performance-Based Remediation, MacDill AFB and Avon Park AFR, FL

MacDill AFB and Avon Park AFR, FL · Defense

Project details

Completed 95% of PBR activities at five sites at MacDill AFB and Avon Park AFR. Within 2.5 years of task order award, achieved site closure at three sites, met the soil removal action performance objective 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

Luke Air Force Base and Gila Bend Auxiliary Field, AZ · Defense · Client: U.S. Army Corps of Engineers, Los Angeles District

Project details

Conducting an $8.3M Phase I RI for Luke AFB for the USACE Los Angeles District. Work includes soil sampling, installation of monitoring wells and lysimeters, on-base and off-base well sampling, conceptual site model development, and a comprehensive RI to define the nature and extent of PFAS contamination. The project includes five 650-foot deep wells and 38 300-foot deep wells at Luke AFB plus 17 350-foot deep wells at the two Gila Bend sites.