Limno-Tech Inc.

Limno-Tech Inc., doing business as Limnotech, an environmental engineering and science consulting firm based in Ann Arbor, Michigan, delivers water quality modeling, environmental analysis, and software development services to federal agencies predominantly as a prime contractor (95% of recent awards) competing in full-and-open federal procurements rather than set-aside categories, with the exception of recent Total Small Business Set-Aside deliveries through GSA OASIS+ and USGS vehicles.

The company's customer footprint concentrates heavily on the Department of Army Corps of Engineers (USACE) and its component divisions. The top five customer organizations account for 70% of recent awards by count and 81% by combined potential value. USACE dominates the relationship: the Engineer Research and Development Center (ERDC) and USACE broadly combined hold 73 awards worth $38.1 million potential value — nearly 59% of the firm's total active portfolio. The U.S. Geological Survey Office of Acquisitions and Grants ranks third with 17 awards valued at $5.7 million, followed by the Department of State's International Joint Commission (14 awards, $1.8 million) and USACE Engineering District Chicago (5 awards, $5.5 million). This customer concentration reflects Limnotech's specialized capability focus: water quality modeling, aquatic laboratory support, PFAS contamination research, soil modifier development, hydrologic and hydraulic analysis using HEC-RAS, GSSHA, and HEC-HMS modeling tools, and analytical software maintenance for water resource management. Representative prime work includes a $698 thousand ERDC delivery order for research and development of soil modifiers for biosynthesis, a $489 thousand USACE contract for environmental water quality modeling and water flow analysis, and a $450 thousand USACE Total Small Business Set-Aside delivery order for water quality and planning tools.

Limnotech's parent vehicle position sits on multiple indefinite delivery contracts rather than government-wide acquisition contracts. The top five parent vehicles by task-order volume are two major USACE contracts (W912HZ15D0002 with 31 task orders worth $7.1 million and W912HZ20D0004 with 30 task orders worth $9.8 million), the GSA Multiple Award Schedule with 21 task orders valued at $2.8 million, an USACE Engineering District contract (W911XK16D0001) with 13 task orders worth $820 thousand, and a USGS contract (140G0119D0009) with 10 task orders valued at $1 million. Most recently, Limnotech secured a $2,999,995 single-award Indefinite Delivery Contract with USGS (award date November 27, 2024, performance through November 2029) for development and maintenance of analytical, modeling, and data management software supporting the agency's Water Mission Area, and a Total Small Business Set-Aside OASIS+ Small Business multiple-award IDIQ with GSA (award date December 19, 2024, ceiling value $999 billion placeholder, performance through December 2029) positioning the firm to compete for task orders across seven functional domains including Environmental Services, Technical and Engineering, and Research and Development.

Activity shows a flat trajectory with near-term recompete risk. Awards per year ranged from 9 (2022) to 13 (2024), declining to 7 in 2025 and 3 through June 2026 — a pattern consistent with year-to-date reporting rather than declining volume. Only 6 awards (combined potential value $750 thousand) carry ultimate completion dates within the next twenty-four months, presenting modest recompete exposure; however, the broader contract portfolio against major indefinite vehicles (USACE W912HZ15D0002, W912HZ20D0004, and the USGS single-award IDC) will continue to support ongoing task-order activity through 2027–2029.

Limnotech operates primarily as its own delivery organization. Across SCI-reportable prime contracts, the firm performed 100% of contract hours in-house, carrying no subcontractor hours on prime awards. However, the company actively subcontracts to larger engineering primes. Named prime contractors include Dewberry Engineers Inc. (three sub awards for engineering and design support on the Initiative for Resilient Great Lakes Coasts, awarded September 2024, April 2025, and August 2025) and Jacobs Engineering Group Inc. (two sub awards for remediation services and Clinton River source evaluation support, awarded December 2024 and June 2025). Limnotech also appears as a sub-recipient on federal grants, including a sub-award from the Department of Energy and Environment (September 2024) for MS4 permit program stakeholder engagement and a sub-award from Texas A&M Agrilife Research (June 2024) for an integrated decision support system to mitigate pollutant loading.

Service Contract Inventory data captures only $352 thousand in invoiced revenue across FY2022–FY2023 on two prime records (FY2022: $311 thousand; FY2023: $41 thousand) — a narrow slice reflecting SCI's $150,000-and-above threshold and exclusion of software development, grants, and goods. The FTE trajectory derived from SCI shows 9.3 FTEs in FY2022, declining to 0.1 FTEs in FY2023, then 1.2 FTEs in FY2024 weighted by sub records. On the two prime SCI records, Limnotech's government-paid median hourly rate was $173.25/hour, with rates ranging from $145.16/hour at the 10th percentile to $201.35/hour at the 90th percentile — a spread consistent with mixed labor categories (analysis, engineering, software support). These SCI figures represent a partial federal services footprint and do not capture the company's total enterprise revenue or full federal activity, which is substantially larger as evidenced by the $64.9 million combined potential value across all 165 awards in the source.