RSI Entech, LLC

Oak Ridge, TN Doing business as RSI Entech LLC Part of Asrc Industrial Services LLC

UEI
G4QHA4XRAA86
CAGE
3M3V3
Primary NAICS
562910 Remediation Services
SAM.gov registration
Active through

Company facts

Self-certified in SAM.gov
  • Alaskan Native Corporation Owned Firm
  • Minority Owned Business
  • Self Certified Small Disadvantaged Business
  • For Profit Organization
  • DOT Certified DBE
  • Limited Liability Company
  • Native American Owned
Entity structure
Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov
Corporate family
SAM.gov registration date
Physical address
151 Lafayette Dr #100, Oak Ridge, TN 37830, USA
Website
rsienv.com
Founded
1996
Employees
251-1K
Estimated annual revenue
$50M-$100M
Industry
  1. Industrials
  2. Commercial & Professional Services
  3. Professional Services
  4. Consulting
SIC code
89 Services, Not Elsewhere Classified
Profiles

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .

Recent federal awards

RSI Entech, LLC's 5 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award Agency Obligated Awarded
General support for LMS IDIQ Contract · 89303326FLM400015 Office of Environmental Management $9,100,375
To incrementally fund to 8 for one month. Contract · 89303323FLM400007 Office of Environmental Management $165,443,327
To incrementally fund to 9 for one month. Contract · 89303323FLM400008 Office of Environmental Management $136,056,014
To incrementally fund to 10 for one month. Contract · 89303323FLM400009 Office of Environmental Management $1,528,273
Task order 3, program support Contract · 89303022FLM400040 Headquarters $55,744,754

About RSI Entech, LLC

Written by GovTribe AI ·

RSI Entech, LLC, headquartered in Oak Ridge, Tennessee, is a small business specializing in environmental restoration and site reuse that serves as a prime contractor for the Department of Energy. As an Alaskan Native Corporation-owned firm and certified small disadvantaged business, RSI Entech provides comprehensive technical, administrative, and project management support for the federal government's management of former nuclear production and research sites. The company brings extensive expertise in managing complex remediation activities and long-term stewardship responsibilities across multiple legacy sites nationwide, positioning itself as a key partner for the Department of Energy's ongoing environmental management and site restoration efforts.

RSI Entech's federal contract work encompasses a broad range of post-remediation legacy management support services, with the majority of its awards issued by the Department of Energy's Office of Legacy Management. The company has received numerous delivery orders valued collectively in the hundreds of millions of dollars for long-term surveillance and maintenance, program support, demolition oversight, asset management, information technology services, safety coordination, and general administrative assistance at closed nuclear facilities located in Oak Ridge, Tennessee, Washington, D.C., and Piqua, Ohio. Recent significant awards include a $10.2 million delivery order issued on October 30, 2025, for post-remediation legacy management support services through September 2026, a $144 million delivery order issued in October 2023 representing Year 3 funding, and multiple additional delivery orders from 2021 through 2023 ranging from approximately $8 million to $79 million. All of these delivery orders have been issued without set-aside designation and are structured as cost-plus-fixed-fee, firm-fixed-price, or time-and-materials arrangements. RSI Entech operates as a prime contractor on these awards with no identified major subcontractors noted in the available contract documentation.

RSI Entech holds two primary Indefinite Delivery Contracts that form the foundation of its relationship with the Department of Energy. The company maintains an existing $1 billion indefinite delivery contract with the Department of Energy's Office of Legacy Management, established in 2020 and set aside for small businesses, under which it has received the majority of its delivery orders through September 2026. Additionally, RSI Entech was awarded a $2 billion multiple award Indefinite Delivery Contract on May 2, 2024, by the Department of Energy's Office of Environmental Management for deactivation, decommissioning, and removal services as well as waste management and program support at various DOE sites including facilities operated by the National Nuclear Security Administration, Office of Naval Reactors, and Office of Science. This newer contract, designated as a small business set-aside, extends through May 2034 and enables the Department of Energy to leverage RSI Entech's expertise across the full lifecycle of post-remediation activities through multiple contract types including firm-fixed-price, time-and-materials, and cost-plus-fixed-fee task orders at locations nationwide.

Contract vehicles

RSI Entech, LLC holds a place on 1 federal contract vehicle. Active vehicles first.

SBA capabilities narrative

From the vendor's SBA profile

RSI provides management support to large remediation contractors in the areas of baseline development, subcontract management, regulatory support, anayltical services and overall planning and program-level management and integration.

Quick answers

What is RSI Entech, LLC's UEI?

RSI Entech, LLC's Unique Entity ID (UEI) in SAM.gov is G4QHA4XRAA86.

What is RSI Entech, LLC's CAGE code?

RSI Entech, LLC's CAGE code is 3M3V3.

What is RSI Entech, LLC's primary NAICS code?

RSI Entech, LLC's primary NAICS code is 562910 (Remediation Services).

Where is RSI Entech, LLC located?

RSI Entech, LLC's physical address in SAM.gov is 151 Lafayette Dr #100, Oak Ridge, TN 37830, USA.

Is RSI Entech, LLC registered in SAM.gov?

Yes. RSI Entech, LLC's SAM.gov registration is active through March 12, 2027.

Who is RSI Entech, LLC's parent company?

RSI Entech, LLC is part of Asrc Industrial Services LLC.

Which contract vehicles does RSI Entech, LLC hold?

RSI Entech, LLC holds a place on 1 federal contract vehicle: Small Business Nationwide Deactivation, Decommissioning, and Removal.

What is RSI Entech, LLC's most recent federal award?

RSI Entech, LLC's most recent federal contract award is General support for LMS IDIQ (89303326FLM400015), from Office of Environmental Management, on October 30, 2025.

On GovTribe

See RSI Entech, LLC's full federal record

  • Federal contract awards
  • IDV awards
  • Contract vehicles
  • Subcontracting relationships
  • Funding analysis by agency, NAICS and set-aside
  • Similar vendors
Try for free Login