Terracon Consultants, Inc.

Terracon Consultants, Inc., a 100% employee-owned engineering and environmental consulting firm headquartered in Olathe, Kansas, delivers geotechnical investigation, environmental testing, materials inspection, and site characterization services to federal agencies as a prime contractor on 53% of recent awards and as a subcontractor on the remaining 47%. The company competes on an unrestricted, full-and-open basis — no small business set-asides appear across its prime footprint, reflecting its position as a large business with a multi-subsidiary structure under parent Tsvc, Inc.

Terracon's customer concentration is heavily weighted to the Army Corps of Engineers ecosystem. The Department of the Army Corps of Engineers accounts for 14 awards valued at $15.4 million combined potential value and dominates the vendor's dollar exposure. The Army Corps of Engineers Engineering District Albuquerque anchors six awards at $5.3 million; Engineering District Rock Island contributes 17 awards at $3.3 million. These three Army Corps touchpoints alone represent 85% of combined potential value across recent awards. The Department of Transportation Federal Highway Administration places 20 awards at $5 million, the largest single-customer award count but with smaller individual task order values. The Environmental Protection Agency Region 7 and the Department of Homeland Security Customs and Border Protection round out the active set with seven and six awards respectively. Across all 57 distinct customer agencies, the top five account for 38% of award count and 85% of potential value, signaling strong dependency on federal civil works and infrastructure projects.

Terracon's core capability portfolio centers on geotechnical drilling, soil and rock sampling and testing, subsurface investigation, environmental site assessments, hazardous materials testing (asbestos and lead-based paint), and industrial hygiene sampling. Representative prime work includes a $565,000 delivery order with the Department of Agriculture for annual performance stack testing of incinerators at the National Bio- and Agro-Defense Facility under the GSA Multiple Award Schedule, running through December 2029; a $335,181.98 firm fixed-price purchase order from the United States Mint for industrial hygiene sampling and testing services at its San Francisco facility, extending through September 2028; a $222,181 delivery order from the Army Corps of Engineers for drilling and undisturbed soil sampling in Memphis, Tennessee; and a $139,451 delivery order for drilling and testing services supporting the St. Francis, Arkansas Levee Renovation project. A substantial portion of Terracon's recent volume flows through task orders under the Army Corps of Engineers' indefinite delivery vehicles, including a multi-year, multi-state BPA ceiling valued at $5 million for geotechnical services across Southern Colorado, New Mexico, and West Texas (Engineering District Albuquerque), and a $10 million indefinite delivery contract for geotechnical drilling and testing across the Midwest and South.

Vehicle positioning reflects Terracon's embedded footprint with the Army Corps. The vendor places 17 task orders under Indefinite Delivery Contract W912EK14D0008 ($865 thousand combined potential value), 7 task orders under W912EQ23D0003 ($552 thousand), and multiple task orders under the $5 million Albuquerque District BPA. The GSA Multiple Award Schedule carries 13 task orders at $657 thousand combined potential value. A smaller IDC vehicle with the Department of Transportation (DTFH7000D00021) generates 17 task orders at $160 thousand. These vehicles define the reachable federal customer base; competitors bidding against Terracon on Army Corps projects face a vendor embedded across multiple regional indefinite-delivery relationships.

Activity has grown sharply — from five awards in 2022 to 40 in 2025 — with 11 awards completed in the current reporting period (June 2026). The 169 total awards in the source dataset carry $35 million combined potential value with $15.7 million obligated, indicating a 45% task-order funding profile typical of indefinite-delivery vehicles. No recompete cliff is present in the source, but the concentration of dollars in Army Corps regional IDVs suggests routine rebid exposure on those vehicles' renewal cycles.

Terracon operates primarily as a large-business prime contractor on federal contracts but carries substantial subcontractor exposure as well. The SCI (Service Contract Inventory) dataset captures 38 records, all as named subcontractor, spanning FY2022–FY2024 with 0.3 to 1.8 FTEs invoiced annually — a partial window that excludes classified work, non-federal revenue, and goods. On prime contracts captured in SCI, the vendor's subcontractor share cannot be fully determined from the source, but the subcontractor footprint is real and growing. Named primes the vendor subs under include Jacobs Government Services Company (engineering and design services across multiple Army and Air Force projects), AECOM Technical Services Inc. (geotechnical engineering and subsurface exploration), Barge Emersion Joint Venture (hazmat testing and geotech QA), Honeywell Federal Manufacturing & Technologies LLC (testing and analysis at the National Security Campus), Parsons Government Services Inc., and Dawson Solutions LLC. Remediation and environmental compliance work flow regularly through Dawson and other environmental prime contractors. Recent sub work includes $132,402 in soil density and moisture testing under Amentum Technology on construction projects and hazmat testing under Barge Emersion on facility repairs and HVAC projects.

Terracon's federal grant footprint is secondary to its contract work. The vendor acts as sub-recipient under the Kansas Department of Health and Environment on environmental remediation and assessment work related to the Brownfields Environmental Remediation program, performing Phase 1 assessments, asbestos surveys, and soil remediation activities. A single sub-grant award flows through The Henry M. Jackson Foundation for the Advancement of Military Medicine for DPAA (Defense Prisoner of War/Missing in Action Office) field investigation and recovery activity. Grant work is not estimated in the pipeline data.

The GSA Multiple Award Schedule labor portfolio carries 20 active labor categories priced from $71.74/hr (clerical, high school education) to $208.34/hr (senior facilities principal, bachelor's degree and 15 years experience), with no security-cleared roles. Mid-range professional categories—staff engineers, project managers, senior project managers—span $108–$167/hr, positioning Terracon for technical staffing on facilities and infrastructure task orders. The vendor's corporate structure includes five named subsidiaries—Nodarse & Associates, Inc., Nutting H C Company, Gallet And Associates, Midwest Testing Laboratory, Inc., and Wpc, Inc.—some of which carry independent contract vehicles and grant relationships, broadening the holding company's market reach in environmental and geotechnical testing.