Sealaska Technical Services

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Sealaska Technical Services, LLC (STS)

Engineering and Environmental Consulting

Sealaska Technical Services (STS), LLC is a full-service engineering and environmental consulting company with a worldwide reach in the areas of Environmental Monitoring and Remediation, Nuclear Nonproliferation, Systems Engineering, Data Management and Analytics. We serve federal and commercial customers, providing mission critical support in:

  • Systems Engineering
  • Environmental Consulting
  • Construction Management
  • Hydrographic/Geophysical Surveys
  • Drone Field Data Support
  • Technology Integration & Deployment
  • International Project Management
  • Ground/Surface Water  Monitoring
  • Inland, Coastal and Ocean Studies
  • Seafloor and Areial 3D Modelling/Mapping

Distinctive Qualifications

STS is a subsidiary of Sealaska Corporation, an Alaska Native Corporation, and is a participant in good standing with the Small Business Administration’s 8(a) Business Development program. Headquartered in Richland, Washington, STS operates reginaon offices in Bellevue, Washington; Portland, Oregon; San Diego, California; and Juneau, Alaska. Additionally, we have global project offices in more than 14 countries.

STS is uniquely capable compared to other small disadvantaged organizations due to its mature business systems and operational infrastructure gained from an SBA-approved Mentor-Protege relationship with Tetra Tech, Inc. We offer a diverse mix of staff with technical capabilities and capacity to perform large, technically complex and logistically challenging projects. We have demonstrated the value of our services and technical solutions in meeting the mission needs of government and commercial clients through projects performed domestically and abroad.

A trusted Partner for Project Success

STS offers its services through highly qualified professionals with recognized knowledge, education, training and project experience. In addition to our proven resources, we can draw on the specialized capabilities of Sealaska subsidiaries and other strategic teaming partners. Working within a highly integrated and well-coordinated team structure, we deliver comprehensive project support. The value of our services and teaming approach is evident in recent government contract awards which have included:

Primary NAICS 541620 – Environmental Consulting Services

  • Prime Contractor to NAVFAC SW for Environmental Studies
  • 562910 – Environmental Remediation for DOE

Secondary NAICS 237990 – Heavy Civil Construction

  • SB Prime Contractor for $400M Design, Integration, Construction, Communications and Engineering (DICCE) 2 Contract in support of NNSA’s Office of Nuclear Smuggling Detection and Deterrence.

8(a) Program Contracting

As a member in good standing with the Small Business Administration’s 8(a) Program, the Federal Government can utilizing the 8(a) sole source vehicle to work with STS.  Doing so provides a convenient and cost effective contracting options for the federal government.

The 8(a) sole source vehicle provides agencies a simplified and shortened acquisition procedure:

  •  Reduced acquisition cycle, measured in days
  •  Lowered administrative costs
  •  Initiate contract with a high‐level statement of work
  •  Directly negotiated best value pricing
  •  Credit for small business promotion within the Agency

Contract Performance Examples

For the Corps Walla Walla District IDIQ contract, STS is teaming with Freestone Environmental Services, Inc. and SWCA Environmental Consultants, Inc. to provide Environmental Consulting Services. Work encompasses 24 service areas and supports key Corps operations including hydro-power, navigation, flood risk management, water supply, ecosystem restoration, and recreation.

Through its Tech2 Solutions joint venture with Tetra Tech, Inc., STS is providing design-build services to the U.S. Department of Energy, National Nuclear Security Administration (NNSA). Under the DICCE2 contract, the joint venture team provides engineering, international logistcs and construction management support for the installation of fixed and mobile radiation detection systems and associated infrastructure. The systems are being installed at strategic land border crossings, airports, and seaports as part of the U.S. Government’s effort to reduce the risk of nuclear and radiological terrorism.


 Seattle (Headquarters)
1200 6th Avenue, Suite 800
Seattle, WA 98101

3200 George Washington Way, Suite D
Richland, WA 99354

San Diego
3838 Camino Del Rio North, Suite 240
San Diego, CA 92108