RSI Services LLC
Oak Ridge, TN Part of Asrc Industrial Services LLC
- UEI
- D4AQNDM27G19
- CAGE
- 80D80
- Primary NAICS
- 541620 Environmental Consulting Services
- SAM.gov registration
- Active through
Company facts
- SBA certifications
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8(a) Program Participant– · Current
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
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- 236220 Commercial and Institutional Building Construction
- 238290 Other Building Equipment Contractors
- 238910 Site Preparation Contractors
- 238990 All Other Specialty Trade Contractors
- 541330 Engineering Services
- 541611 Administrative Management and General Management Consulting Services
- 541690 Other Scientific and Technical Consulting Services
- 541990 All Other Professional, Scientific, and Technical Services
- Corporate family
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Parent
Tempe, AZ
LHMJHAUJCNV9
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- Oak Ridge, TN S9NSZ8JNL7Z3
- San Francisco, CA TALZZ1LH55S3
- Oak Ridge, TN CTB9DBUGGB27
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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 | $1,831,440 |
| FY2025 | $500,517 |
| FY2024 | $14,264,941 |
| FY2023 | $2,939,336 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Energy | $1,831,440 |
Contract vehicles
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Contract subawards
| Prime contractor | Prime award | Amount | Awarded |
|---|---|---|---|
| Consolidated Nuclear Security, LLC | DENA0001942 | $507,909 | |
| Consolidated Nuclear Security, LLC | DENA0001942 | $507,909 | |
| Ut-Battelle LLC | DEAC0500OR22725 | $90,688 |
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| RSI Entech, LLC | Oak Ridge, TN | 562910 Remediation Services |
| Aleut Environmental Remediation, LLC | Oak Ridge, TN | 562211 Hazardous Waste Treatment and Disposal |
| Aleut Remediation LLC | Oak Ridge, TN | 562910 Remediation Services |
| N&E | Aiken, SC | 562910 Remediation Services |
| Company Headquarters | Knoxville, TN | 541620 Environmental Consulting Services |
About the company
RSI Services LLC, an SBA 8(a) certified Alaskan Native Corporation-owned small disadvantaged business headquartered in Oak Ridge, Tennessee, provides environmental remediation, radiological cleanup, site characterization, and waste management services to federal agencies as a prime contractor (81% of recent awards) and subcontractor on nuclear-facility environmental restoration programs. The division operates under parent company Asrc Industrial Services LLC and competes predominantly under 8(a) set-asides—Competitive 8(a) and 8(a) Sole Source designations account for the majority of RSI's prime footprint, with a small portion of full-and-open environmental consulting work.
RSI's customer concentration is heavily weighted toward nuclear and environmental restoration agencies. The top five customer agencies account for 81% of recent awards by count and 98% by combined potential value, led by the Department of Energy National Nuclear Security Administration (5 awards, $49.3 million combined potential value), the Army Corps of Engineers Engineering District Omaha (2 awards, $60 million), the Department of Energy Office of Environmental Management (3 awards, $14 million), and the Air Force Civil Engineer Center (2 awards, including a $14.5 million firm fixed-price definitive contract for radiological cleanup and soil remediation at the former McClellan Air Force Base in California, ultimate completion July 21, 2028). The dollar ranking diverges sharply from award count; the Corps of Engineers' Omaha District anchors the top potential-value slot despite holding only two awards, whereas NNSA sustains the highest volume. Representative work includes a $8.73 million delivery order from the Office of Environmental Management for pre-remediation characterization, remediation, and confirmation sampling at Oak Ridge, Tennessee (ultimate completion March 7, 2027); a $3.1 million cost-plus-fixed-fee definitive contract with the Corps of Engineers for time-critical removal action at the Staten Island FUSRAP site (ultimate completion October 27, 2026); and a $931,223.41 time-and-materials delivery order with NNSA for CERCLA remediation at the Bettis Atomic Power Laboratory in Pittsburgh, PA (ultimate completion May 31, 2027).
RSI holds two principal indefinite-delivery vehicles. The largest is a $60 million Competitive 8(a) multiple-award contract issued by the Army Corps of Engineers Omaha District for environmental consulting services (Environmental Consulting Services, Omaha District, NWD and existing customers), under which RSI has placed task orders through February 2027. RSI also operates under a multi-year NNSA indefinite-delivery contract valued at $47 million for environmental remediation, demolition, regulatory compliance, and waste management at nuclear-related sites, against which seven task orders totaling $16.3 million in combined potential value have been issued.
Award activity has been uneven. The vendor received five awards in 2021, then declined to three in 2022, two in 2023, four in 2024, and two most recently in 2026. Six awards (combined potential value $28.1 million) face ultimate completion inside the next twenty-four months and therefore carry recompete exposure. As a subcontractor, RSI Services performs management and operating support work under Consolidated Nuclear Security LLC on Y-12 National Security Complex and Pantex Plant contracts, and supports Oak Ridge National Laboratory operations under UT-Battelle LLC. Category concentration is acute: remediation services account for nine of sixteen awards, with facilities support services (three awards) and environmental consulting services (two awards) rounding out the portfolio.
SCI-reported invoicing for RSI totaled $1.3 million in FY2022, with no reportable invoicing in FY2023 through FY2025; this reflects the subset of service-contract activity above the $150,000 reporting threshold and excludes goods, products, and classified work. The FY2022 SCI record captured roughly 0.9 FTEs at a government-paid median rate of $480.42 per hour across a single contract. Across SCI-reportable prime contracts, subs accounted for 4% of contractor hours, with one named subcontractor. The limited SCI coverage is consistent with RSI's shift toward higher-value fixed-price and time-and-materials environmental remediation contracts that may not trigger SCI reporting thresholds in the same way labor-intensive services do.
RSI Services operates three named joint-venture subsidiaries: RSI Cape JV LLC, RSI Alliant JV LLC, and RSI Amentum Environmental Solutions LLC, all minority-owned and Alaskan Native Corporation-owned small business joint ventures. These vehicles position RSI to participate in set-aside and joint-venture contract competitions in environmental remediation and nuclear-facility operations.
SBA capabilities narrative
Environmental Remediation Services
Quick answers
Is RSI Services LLC registered in SAM.gov?
Yes. RSI Services LLC's SAM.gov registration is active through March 5, 2027.
Which SBA certifications does RSI Services LLC hold?
RSI Services LLC holds 8(a) Program Participant certification from the SBA.
Which contract vehicles does RSI Services LLC hold?
RSI Services LLC holds a place on 1 federal contract vehicle: Environmental Consulting Services, Omaha District, NWD and existing customers.
How much has RSI Services LLC received in federal contracts?
Federal contracts obligated $500,517 to RSI Services LLC in fiscal year 2025 and $19,536,234 in fiscal years 2023 through 2027.
What is RSI Services LLC's most recent federal award?
RSI Services LLC's most recent federal contract award is Obtain all services as specified in this performance work statement (PWS) for completing the comprehensive… (89303326FEM400489), from Office of Environmental Management, on September 1, 2026.
On GovTribe
See RSI Services LLC's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Subcontracting relationships
- Funding analysis by agency, NAICS and set-aside
- Similar vendors