Ones Plexus Joint Venture LLC
Tulsa, OK Part of Osage Nation Energy Services LLC
- UEI
- UHNZUQL3ACW6
- CAGE
- 9DMA4
- Primary NAICS
- 541620 Environmental Consulting Services
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- SBA certifications
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8(a) Joint Venture– · Current
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
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Parent
Osage Nation Energy Services LLC · Tulsa, OK
V1U1FNF1LLV4
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Parent
Osage Nation Energy Services LLC · Tulsa, OK
V1U1FNF1LLV4
- SAM.gov registration date
- Physical address
- 3455 N Osage Dr, Tulsa, OK 74127, USA
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 | $2,347,402 |
| FY2025 | $4,952,970 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Veterans Affairs | $2,173,243 | |
| 2 | Department of the Army | $174,159 |
Contract vehicles
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Arrowhead Contracting, LLC | — | 562910 Remediation Services |
| Osage Nation Environmental Solutions, LLC | Tulsa, OK | 541620 Environmental Consulting Services |
| Company Headquarters | Knoxville, TN | 541620 Environmental Consulting Services |
| Bric Perikin JV, LLC | Scottsdale, AZ | 541611 Administrative Management and General Management Consulting Services |
| North Wind-Ea II JV, LLC | Idaho Falls, ID | 562910 Remediation Services |
About the company
Ones Plexus Joint Venture LLC, an SBA-certified 8(a) tribally-owned and minority-owned joint venture based in Tulsa, Oklahoma, performs environmental remediation, hazardous waste monitoring, and facility remedial investigation services as a prime contractor exclusively under federal set-aside and governmentwide vehicles. The joint venture operates as a child entity of Osage Nation Energy Services LLC, a Native American-owned environmental services firm.
Ones Plexus competes predominantly in the 8(a) set-aside space—all nine recent awards are prime contracts split between Competitive 8(a), 8(a) Sole Source, and no-set-aside delivery orders issued against 8(a)-reserved vehicles. The vendor's capability portfolio centers on environmental remediation, PFOS (per- and polyfluoroalkyl substances) remedial investigation, erosion control and site stabilization, well system optimization, and cleanup planning for military installations. Representative work includes a $908,256 Competitive 8(a) delivery order from the Army Corps of Engineers (Louisville District) for RCRA hazardous waste landfill monitoring and remediation at the Indiana Army Ammunition Plant near Charlestown, awarded July 2026 under OASIS+8A; a $2.1 million firm fixed-price delivery order from USACE Savannah for PFOS remedial investigation at McEntire Joint National Guard Base in South Carolina, awarded November 2024; and a $474,293 Competitive 8(a) delivery order from USACE Savannah for erosion control, stabilization, and well system optimization across multiple solid waste management units at Fort Bragg, North Carolina, awarded September 2025.
Customer concentration is heavily concentrated in Army Corps of Engineers district-level offices and military facility operations. The top two customers by both award count and potential value—USACE Savannah District and USACE Mobile District—account for $100.8 million of the vendor's $119 million combined potential value across nine awards, covering 100% of the portfolio. The Department of Veterans Affairs Office of Construction and Facilities Management adds $17.2 million through an 8(a) Sole Source definitive contract for project delivery services, awarded September 2025 with completion through September 2030. GSA Federal Acquisition Service carries Ones Plexus on the OASIS+8A governmentwide MAC, a multiple-award vehicle open through April 15, 2030.
Ones Plexus holds three primary vehicle positions. The $49 million Savannah Environmental Remediation Services IDC (USACE Savannah District), awarded July 2024 and running through June 2029, is a single-award competitively set-aside 8(a) contract that has issued three task orders totaling $2.8 million. The OASIS+8A governmentwide Multiple Agency Contract, awarded April 2025 through GSA Federal Acquisition Service with a $999.999 billion ceiling and Competitive 8(a) set-aside status, enables task order issuance across civilian and defense agencies for environmental remediation and investigation services—Ones Plexus has issued one task order ($908 thousand) under this vehicle as of the source date. A single-award $49 million IDIQ from USACE Mobile for basewide environmental support under the Environmental Quality Program, awarded April 2026 through April 2031, has issued one delivery order ($1 thousand) to date.
Activity has grown from two awards in 2024 to four in 2025 and three in 2026, with combined potential value reaching $119 million against $7.3 million in obligated dollars (6% draw-down). Two awards carrying combined potential value of $742 thousand face ultimate completion within the next twenty-four months, creating recompete exposure for that dollar volume. Ones Plexus operates as a pure prime contractor with no subcontract footprint in the source data.
Quick answers
Is Ones Plexus Joint Venture LLC registered in SAM.gov?
Yes. Ones Plexus Joint Venture LLC's SAM.gov registration is active through April 20, 2027.
Which SBA certifications does Ones Plexus Joint Venture LLC hold?
Ones Plexus Joint Venture LLC holds 8(a) Joint Venture certification from the SBA.
Which contract vehicles does Ones Plexus Joint Venture LLC hold?
Ones Plexus Joint Venture LLC holds a place on 2 federal contract vehicles, including OASIS+8A and Savannah Environmental Remediation Services.
How much has Ones Plexus Joint Venture LLC received in federal contracts?
Federal contracts obligated $4,952,970 to Ones Plexus Joint Venture LLC in fiscal year 2025 and $7,300,373 in fiscal years 2023 through 2027.
How does Ones Plexus Joint Venture LLC rank among federal contractors?
Ones Plexus Joint Venture LLC ranked #95 in PSC F9 in FY2025.
What is Ones Plexus Joint Venture LLC's most recent federal award?
Ones Plexus Joint Venture LLC's most recent federal contract award is Rcra hazardous waste monitoring inaap (OASIS+): this task order is for environmental remediation services for the… (W912QR26FA178), from ENDIST Louisville (USACE), on July 8, 2026.
On GovTribe
See Ones Plexus Joint Venture LLC's full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
- Similar vendors