Contract W911S621C0003
Mellor Engineering Inc · Department Of Defense · August 18, 2021
Mellor Engineering Inc was awarded a federal contract by Department Of Defense (Department Of The Army) on August 18, 2021 for $9.99 million of work in hazardous waste collection. Performance is in Dugway, UT. It was awarded under a small business set-aside. The contract has been modified 40 times since the base award It uses firm fixed-price contract pricing. The most recent modification was on November 19, 2025.
Contract details
- PIID
- W911S621C0003
- Award type
- Definitive Contract
- Pricing
- Firm Fixed Price
- Set-aside
- Women Owned Small Business
- Competition
- Competed Under Sap
- NAICS
- 562112 · Hazardous Waste Collection
- Product / service
- Environmental Systems Protection- Environmental Remediation
- Place of performance
- Dugway, UT
- First action
- August 18, 2021
- Latest action
- November 19, 2025
Description
CENTRAL HAZARDOUS WASTE SUPPORT SERVICES
Modification timeline
-
November 19, 2025Mod P00040$46.9K
-
November 18, 2025Mod P00039$562.3K
-
November 17, 2025Mod P00038$46.9K
-
October 31, 2025Mod P00037$46.9K
-
October 29, 2025Mod P00036$93.7K
-
October 27, 2025Mod P00035$0
-
September 8, 2025Mod P00034$0
-
July 15, 2025Mod P00033$0
-
July 15, 2025Mod P00032$558.2K
-
June 11, 2025Mod P00031$183.3K
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Top contractors in NAICS 562112
Lifetime obligated dollars across all federal contracts in this NAICS code.
| # | Contractor | Contracts | Obligated |
|---|---|---|---|
| 1 | Neie Medical Waste Services, Llc | 627 | $79.55M |
| 2 | Triumvirate Environmental, Llc | 326 | $59.34M |
| 3 | Clean Venture Inc | 102 | $52.70M |
| 4 | Earth Smart Environmental Solutions Llc | 347 | $40.85M |
| 5 | Chenega Operations Services, Llc | 101 | $25.32M |
| 6 | Stericycle Inc | 1,066 | $22.80M |
| 7 | Envirosolve Llc | 37 | $21.13M |
| 8 | Haztrain Inc | 61 | $20.89M |
| 9 | Ferguson Harbour Incorporated | 6 | $20.16M |
| 10 | Aqs, Inc | 1 | $20.06M |
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Frequently asked questions
What is contract W911S621C0003?
Contract W911S621C0003 is a federal contract awarded to Mellor Engineering Inc by Department Of Defense on August 18, 2021 for $9.99 million of work classified under HAZARDOUS WASTE COLLECTION. It has been modified 40 times since the base award.
Who won contract W911S621C0003?
Mellor Engineering Inc won contract W911S621C0003 from Department Of Defense.
How much is contract W911S621C0003 worth?
Contract W911S621C0003 has obligated $9.99 million to date, with a total potential value of $11.06 million if all options are exercised.