Geosyntec Consultants, Inc.

Geosyntec Consultants, Inc., doing business as GCI, is a for-profit environmental consulting and engineering firm headquartered in Boca Raton, Florida, that delivers environmental remediation, assessment, technical consulting, and expert witness services to the federal government as a prime contractor (75% of recent awards) and as a subcontractor to larger engineering and environmental primes. GCI competes predominantly full-and-open; no set-aside designations mark its federal award footprint.

GCI's customer concentration is extreme and reflects a distinct bimodal split between two anchoring agencies. NASA Kennedy Space Center dominates by volume and dollars — 61 awards worth $136 million combined potential value — while the Army Corps of Engineers Humphreys Engineer Center Support Activity (HECSA) holds 61 awards worth $22.9 million combined potential value. Together, these two customers account for nearly two-thirds of GCI's recent awards and 88% of combined potential value across all 40 customer agencies served. The concentration reflects GCI's deep position on several NASA indefinite-delivery vehicles (Basic Ordering Agreement NAS1003003 with 37 task orders worth $10 million; Indefinite Delivery Contracts NNK09CA02B and NNK12CA13B, each holding 23 task orders) and recurring SERDP and ESTCP research-and-development awards from the Army Corps HECSA. The Department of the Air Force Materiel Command's Civil Engineer Center, the National Science Foundation, and the General Services Administration round out the top five by potential value. GCI also operates as an expert witness service provider and litigant-support consultant to the Department of Justice Civil Division and Environment and Natural Resources Division.

GCI's concrete capability portfolio centers on per- and polyfluoroalkyl substances (PFAS) treatment and remediation, environmental site assessment and restoration, environmental compliance, and research-and-development support for environmental security initiatives. Representative prime work includes a $14.7 million firm fixed-price delivery order from the Air Force Civil Engineer Center (September 2025, through March 2030) for Base Integrated Environmental Support Tasks III, performed in Warner Robins, Georgia; a $4.98 million definitive contract from the National Science Foundation (July 2025, through July 2028) under the NSF Convergence Accelerator Track M Phase 2 for bio-inspired and biocatalytic degradation of PFAS ("forever chemicals"); a $2.28 million ESTCP definitive contract from HECSA (September 2024, through September 2028) for assessing field-scale feasibility and cost of ultraviolet/silica-based granular media treatment to destroy PFAS in concentrated liquids; and a $1.1 million SERDP definitive contract from HECSA (July 2023, through July 2027) on marine toxicity and bioaccumulation of PFAS. GCI also holds an active portfolio of expert witness and litigative-support purchase orders from the Department of Justice, including a $249.9 thousand time-and-materials order (September 2025, through February 2030) and a $449.2 thousand time-and-materials order (April 2024, through February 2028), both for expert witness services.

GCI maintains two major indefinite-delivery vehicles accessible to federal agencies. The company holds a GSA Multiple Award Schedule contract (December 2021 through December 2026) with a $6 million ceiling covering environmental consulting, engineering, geographic information systems, and remediation services; recent delivery orders under this vehicle include the Air Force Base Integrated Environmental Support award noted above. More strategically significant is GCI's position on the OASIS+ Unrestricted Multiple Agency Contract (awarded April 2025, valid through April 2030), a civilian-agency MAC with no set-aside restrictions and a placeholder ceiling. This OASIS+ vehicle positions GCI to compete across all federal civilian agencies for environmental and engineering services.

Activity has expanded significantly — six awards in 2022 to 30 in 2024 — before moderating to 28 in 2025 and 13 year-to-date in 2026. Eleven awards worth $11.8 million combined potential value face ultimate completion within the next twenty-four months and therefore represent recompete exposure for GCI and recompete opportunity for competitors.

GCI operates as a subcontractor on multiple defense and federal environmental restoration programs. Named prime contractors GCI subcontracts to include Ch2M Hill, Inc. (recurring environmental restoration work under the Navy Comprehensive Long-Term Environmental Action Navy program and Naval Air Station remedial investigations), Jacobs Engineering Group Inc. (SERDP research-and-development and engineering services), AECOM Technical Services Inc., CDM Federal Programs Corporation, Trevet-Noreas JV LLC and Trevet-Bay West Joint Venture LLC (various naval site remediation and investigation support), Auburn University and the Trustees of the Colorado School of Mines (SERDP projects on PFAS transformation and ex-situ treatment), and George Washington University and Florida State University (SERDP environmental research projects). Recent sub-award activity (FY2025–2026) concentrates on PFAS-related research, environmental investigation, and remedial engineering support.

GCI acts as a grant sub-recipient on EPA Brownfields and SERDP environmental research awards. Named prime grantees include the City of Oklahoma City (EPA Brownfields Assessment and Cleanup cooperative agreements, with GCI performing technical assessment and cleanup support) and Florida State University and Auburn University (SERDP projects on bioremediation and environmental chemistry). SCI-reported federal services activity is sparse and not representative of GCI's full federal footprint — only 18 service-contract records above the $150,000 reporting threshold across FY2022–FY2024, with $713 thousand invoiced across prime contracts and a median government-paid rate around $255/hr on the few records captured. The SCI dataset shows 0.6 FTEs in FY2022, zero in FY2023, and 2.5 FTEs in FY2024 across primarily expert witness and litigation-support services. This narrow slice excludes GCI's substantial research, engineering, remediation, and technical consulting work, which dominates the award footprint by dollar value.

The corporate structure includes multiple named subsidiaries — Geosyntec Consultants International Inc., Geosyntec Brice JV LLC, MMI Engineering Inc., Gradco LLC, AGN JV LLC, and Geosyntec-Gannett Fleming Joint Venture, among others — reflecting specialized service lines and joint-venture relationships in remediation and engineering services, though the source does not detail separate capability or revenue attribution to these entities.