Architect-Engineer, Hazardous, Toxic, and Radioactive Waste and Environmental Services

The U.S. Army Corps of Engineers, Kansas City District (ENDIST Kansas City), established a Master IDIQ on April 16, 2021, to provide architect-engineer services for hazardous, toxic, and radioactive waste remediation and environmental restoration across the Northwestern Division. Ordering authority extends to April 15, 2028, leaving approximately 20 months for new task-order placement. The vehicle carries a combined potential value of $194.1 million, of which $147.9 million (76%) has been obligated across 88 task orders awarded to 10 distinct primes serving 13 customer agencies.

Ordering activity has declined sharply: the vehicle averaged 22 orders per year in 2021–2023 but dropped to 13 in 2024 and just 2 through September 2025. This trend suggests the vehicle is maturing and competing for capacity against successor or parallel vehicles. Task orders span the full environmental remediation lifecycle—preliminary assessment, remedial investigation, feasibility studies, remedial design, engineering-during-construction oversight, and post-construction operations and monitoring—with representative orders addressing Superfund sites (Lower Passaic River, Gowanus Canal, Bradford Island NPL), former military facilities (Fort Leonard Wood, McConnell AFB, Kansas Army Ammunition Plant), and installations (Welsbach/General Gas Mantle, American Thermostat). Pricing is predominantly cost-plus-fixed-fee; firm-fixed-price orders appear for data-gathering and investigation phases.

Five primes dominate the portfolio by potential value: WSP USA Solutions Inc. ($47.8 million, 12 orders), CDM Federal Programs Corporation ($44 million, 23 orders), Arcadis U.S., Inc. ($38.7 million, 12 orders), Jacobs Government Services Company ($18.5 million, 8 orders), and Hdr-Obg A Joint Venture ($15.7 million, 16 orders). These five firms collectively hold 85% of potential value. The Environmental Protection Agency Region 2 is the dominant customer, funding 54 orders worth $133 million—69% of all task-order potential value. The Kansas City District itself placed 15 orders worth $18.7 million. All 88 task orders carry no set-aside designation, making the vehicle unrestricted. Typical task-order ceilings range from under $500,000 to roughly $4 million for investigation and design phases, with longer-duration oversight and operations orders running $1 million to $10 million-plus (Upper Hudson River OM&M at $12.1 million ceiling; Lower Hudson RI/FS at $7.3 million obligated).

The Northwestern Division (NWD) of the U.S. Army Corps of Engineers has a requires Architect-Engineer (A-E) Hazardous, Toxic, and Radioactive Waste (HTRW)/Environmental Indefinite Delivery Contracts (IDC) for execution of its environmental mission. Services include preliminary assessment, remedial investigation, feasibility study, design, engineering during construction, post-construction long term operations or monitoring, and post-construction optimization or modifications to existing systems and remedies.