RSI Entech, LLC
Oak Ridge, TN Part of Asrc Industrial Services LLC
- UEI
- G4QHA4XRAA86
- CAGE
- 3M3V3
- Primary NAICS
- 562910 Remediation Services
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
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Its parent company, Arctic Slope Regional Corporation, ranks:
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
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Parent
Tempe, AZ
LHMJHAUJCNV9
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- UADRHY5EJGL5
- San Francisco, CA RGNRDC8MYPS3
- RSI Nuclear, LLC · Albuquerque, NM NB31NPVJHRZ5
- Albuquerque, NM CJWYUZM94HW9
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Parent
Tempe, AZ
LHMJHAUJCNV9
- 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
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- Industrials
- Commercial & Professional Services
- Professional Services
- 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 .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $122,444,790 |
| FY2025 | $125,374,886 |
| FY2024 | $106,859,649 |
| FY2023 | $93,269,485 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Energy | $122,444,790 |
Contract vehicles
Contract awards
| Award | Agency | Obligated | Awarded |
|---|---|---|---|
| Task order 12: legacy management support services | Office of Environmental Management | $33,684,361 | |
| General support for LMS IDIQ | Office of Environmental Management | $9,100,375 | |
| To incrementally fund to 8 for one month. | Office of Environmental Management | $165,443,327 | |
| To incrementally fund to 9 for one month. | Office of Environmental Management | $136,056,014 | |
| To incrementally fund to 10 for one month. | Office of Environmental Management | $1,533,273 |
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Sigma Science, Inc. | Albuquerque, NM | 541330 Engineering Services |
| RSI Services LLC | Oak Ridge, TN | 541620 Environmental Consulting Services |
| Aleut Remediation LLC | Oak Ridge, TN | 562910 Remediation Services |
| SRS | Seattle, WA | 541990 All Other Professional, Scientific, and Technical Services |
| Navarro Research And Engineering, Inc. | Oak Ridge, TN | 562910 Remediation Services |
About the company
RSI Entech, LLC, an Alaskan Native Corporation-owned small disadvantaged business headquartered in Oak Ridge, Tennessee, operates as a prime contractor delivering post-remediation legacy management support, deactivation and decommissioning services, waste management, and environmental remediation to the Department of Energy under total small business set-asides. The vendor competes exclusively under set-asides and operates as a 100% prime contractor across all 20 awards in recent federal activity, with no subcontractor role.
RSI Entech is a subsidiary of Asrc Industrial Services LLC, itself an Alaskan Native Corporation-owned firm, and operates alongside three named subsidiaries — RSI Nuclear LLC, RSI Envirachem LLC, and RSI Remediation LLC — each carrying the same Alaskan Native Corporation-owned and minority-owned designations. The consolidated group's capability portfolio concentrates on nuclear legacy site stewardship, facility deactivation and decommissioning, hazardous waste management, and environmental remediation across former Department of Energy production and research facilities.
Customer concentration is extreme: the Department of Energy Office of Legacy Management and the Department of Energy Office of Environmental Management account for 100% of the 20 awards in the dataset. The Office of Legacy Management alone represents 12 awards with $956.9 million in combined potential value, while the Office of Environmental Management anchors six awards with $3.18 billion in combined potential value. A single GSA Federal Acquisition Service award ($5.3 million) and one Department of Energy Headquarters award ($1.4 million) round out the active customer set. Across all recent federal activity, RSI Entech holds combined potential value of $4.14 billion against $772.1 million in obligated dollars (19% of combined potential value).
RSI Entech holds two primary parent vehicles. The indefinite delivery contract 89303020DLM000001, established in 2020 with the Department of Energy Office of Legacy Management at $1 billion, anchors 15 task orders worth $976.3 million in combined potential value and carries a May 1, 2034 completion date. A second $2 billion multiple-award IDIQ with the Department of Energy Office of Environmental Management, awarded May 2, 2024, under total small business set-aside, extends through May 1, 2034 and procures deactivation, decommissioning, and removal services; waste management; and program support at Department of Energy sites nationwide, including facilities operated by the National Nuclear Security Administration, Office of Naval Reactors, and Office of Science. Recent delivery orders include a $384.1 million task order (Task Order 12) awarded October 1, 2026, for post-remediation legacy management support services at Oak Ridge through September 30, 2029; a $166 million task order (Task Order 8) for incremental legacy management support through December 31, 2026; and a $139.4 million task order (Task Order 9) for Year 3 legacy services through January 31, 2027.
Activity has declined from four awards in 2022 to one award in each of 2024, 2025, and 2026, reflecting the vendor's consolidation within two large parent IDIQs that dominate the potential-value landscape. Two awards with combined potential value of $305.4 million reach ultimate completion inside the next twenty-four months and face recompete exposure.
SCI-reported invoicing on federal services contracts totaled $271.4 million across fiscal years 2022–2025, with significant volatility: $55.1 million in FY2022, zero in FY2023, $102.7 million in FY2024, and $113.6 million in FY2025. Government-reported FTE headcount on these contracts ranged from 178 FTEs in FY2022 to a peak of 860 FTEs in FY2024, then declining to 360 FTEs in FY2025, reflecting fluctuating task-order staffing levels. Median government-paid hourly rates on prime contracts ran approximately $122.43 per hour, with senior labor reaching $1,874.70 per hour at the 90th percentile. Across SCI-reportable prime contracts, subcontractors performed an average of 17 percent of total contractor hours, with 44 named subcontractors supporting delivery across the portfolio — a relatively modest sub-engagement profile for work of this scale and complexity.
SBA capabilities narrative
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
Is RSI Entech, LLC registered in SAM.gov?
Yes. RSI Entech, LLC's SAM.gov registration is active through March 12, 2027.
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.
How much has RSI Entech, LLC received in federal contracts?
Federal contracts obligated $125,374,886 to RSI Entech, LLC in fiscal year 2025 and $447,948,810 in fiscal years 2023 through 2027.
How does RSI Entech, LLC rank among federal contractors?
RSI Entech, LLC's parent company, Arctic Slope Regional Corporation, ranked #4 in NAICS 5629, #4 in PSC R799 and #6 in PSC R7 in FY2025.
What is RSI Entech, LLC's most recent federal award?
RSI Entech, LLC's most recent federal contract award is Task order 12: legacy management support services (89303326FLM400016), from Office of Environmental Management, on October 1, 2026.
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