Limno-Tech Inc.

Limno-Tech Inc., doing business as Limnotech, provides water quality modeling, hydrologic and hydraulic analysis, environmental software development, and aquatic laboratory support to federal agencies as a prime contractor (95% of recent awards) under the Total Small Business set-aside, competing predominantly on small-business-reserved vehicles and task orders. A Subchapter S corporation headquartered in Ann Arbor, Michigan, Limnotech operates as a small business environmental engineering and science consulting firm specializing in water resources management, contaminant research, and analytical software maintenance for federal water-resource and environmental programs.

The Army Corps of Engineers dominates Limnotech's customer concentration, accounting for 70% of awards across multiple organizational units. The Engineer Research and Development Center (45 awards, $17.2 million combined potential value) and the broader USACE organization (28 awards, $20.9 million combined potential value) drive the top-line volume and dollars, followed by the U.S. Geological Survey Office of Acquisitions and Grants (21 awards, $6 million combined potential value). The rankings by award count and potential value track closely; USACE dollars are distributed across two major sub-organizations, with ERDC anchoring a slightly larger share in the potential-value ranking. Department of State International Joint Commission (14 awards, $1.8 million) and USACE Engineering District Chicago (5 awards, $5.5 million) round out the active customer set. Across NAICS, Limnotech's portfolio splits between Computer Systems Design Services (32 awards), Research and Development in Physical, Engineering, and Life Sciences (32 awards), Engineering Services (30 awards), and Environmental Consulting Services (28 awards).

Limnotech holds two active indefinite delivery contracts anchoring its prime work. The first is a Total Small Business OASIS+ Small Business (OAS+SB) multiple-award GWAC awarded by GSA's Federal Acquisition Service on December 19, 2024, with a ceiling through December 18, 2029 covering integrated professional services across seven functional domains (Management and Advisory, Technical and Engineering, Research and Development, Intelligence Services, Environmental Services, Facilities, and Logistics). The second is a single-award Indefinite Delivery Contract with USGS Office of Acquisitions and Grants (November 27, 2024 through November 26, 2029, $2,999,995 ceiling) for development and maintenance of analytical, modeling, data-management, and web-systems software supporting the Water Mission Area. Task orders under the USGS vehicle include IT services for modeling and data systems ($179,936.68, September 23, 2026), NHGF software support ($49,956.18, August 6, 2026), hydrodynamic modeling framework development ($38,400, August 4, 2026), and Blodgett support ($49,902.87, June 9, 2026). The top five parent vehicles span indefinite-delivery contracts with USACE (W912HZ15D0002, 31 task orders, $7.1 million; W912HZ20D0004, 30 task orders, $9.8 million), the GSA Multiple Award Schedule (21 task orders, $2.8 million), and additional USACE IDCs, carrying combined potential value of $20.9 million across 99 task orders.

Recent prime task-order work exemplifies the capability footprint. A $329,621.82 delivery order from USACE Engineer Research and Development Center funds modeling post-wildfire effects on water quality (September 25, 2024). A $286,789.40 firm fixed-price USGS task order (LIMNO-TECH TO #1 - Blodgett, December 20, 2024) supports water modeling and data systems. A $149,893.47 USACE task order optimizes Clearwater Riverine modeling (March 28, 2025). A $698,647.98 ERDC delivery order funds research and development for biosynthesis of soil modifiers. A $450,680.08 USACE order extends water quality and modeling analysis tools (July 6, 2023, later de-obligated to $423,076.05). Limnotech also delivers hydrologic and hydraulic software maintenance using HEC-RAS, GSSHA, and HEC-HMS tools.

Activity has remained relatively flat year over year — 9 awards in 2022 through 13 in 2024, declining to 7 each in 2025 and 2026 — with only $679 thousand in combined potential value reaching ultimate completion inside the next twenty-four months, creating modest recompete exposure. Limnotech operates as a subcontractor to Dewberry Engineers Inc. on Great Lakes coastal resilience engineering and design (three sub-awards from August 2025 back through September 2024) and to Jacobs Engineering Group Inc. on Clinton River source evaluation and remediation (two sub-awards, June 2025 and December 2024). It also holds sub-awards as a federal-grant sub-recipient under Texas A&M AgriLife Research for an integrated decision-support system addressing pollutant loading and under the Department of Energy and Environment on DC stormwater MS4 permit program engagement.

SCI-reportable federal service-contract invoicing totaled $352 thousand across FY2022 and FY2023 ($311 thousand in FY2022, $41 thousand in FY2023), with reported FTE delivery ranging from 9.3 FTEs in FY2022 to 0.1 FTEs in FY2023, indicating that SCI captures only a small slice of Limnotech's total federal service activity. Government-paid hourly rates on SCI-reportable prime records ranged from a 10th percentile of $145.16 per hour to a 90th percentile of $201.35 per hour, with a median of $173.25 per hour. Across SCI-reportable prime contracts, Limnotech performed work in-house without subcontractor involvement. Limnotech's sub-engagement is minimal on the prime footprint; it functions primarily as a prime on small-business set-aside task orders and vehicles, with occasional sub-roles on large-prime environmental and engineering programs.