Active
Overview
- Legal name
- GSI ENVIRONMENTAL INC.
- Registered location
- HOUSTON, TX, USA
- Website
- Company website ↗
- Primary NAICS
- 541620 — Environmental Consulting Services
- Latest award activity
- Jun 11, 2026
Read company summary
GSI ENVIRONMENTAL INC. is associated with UEI J8M1UGKAFL69 and CAGE 0X4P1 in public federal records. AcornBids currently links 24 prime awards totaling $19.1M in obligations to this entity. Its largest recorded federal customer by obligations is Department of Defense. Its recorded federal awards include work classified as Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); Environmental Consulting Services. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 541620 (Environmental Consulting Services). Its public SAM.gov registration lists HOUSTON, TX, USA.
At a glance
Lifetime prime obligations$19.1M
Prime awards24
Awards with future end dates19
Top-agency concentration
Not available
Why this customer concentration
Detailed agency totals are not available in this stored profile.
Largest positive coded-agency total ÷ all positive coded-agency totals × 100
Missing data is shown as unavailable.
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- GSI ENVIRONMENTAL INC.
- UEI
- J8M1UGKAFL69
- CAGE
- 0X4P1
- Registered address
- 2211 NORFOLK ST, HOUSTON, TX, 77098, USA
- Registration status
- Active
- Primary NAICS
- 541620 — Environmental Consulting Services
- SAM activation
- Jan 23, 2026
- Initial registration
- Sep 27, 2001
- Entity start
- Jul 11, 1986
- SAM updated
- Jan 23, 2026
- Registration expires
- Jan 21, 2027
- Fiscal year end
- Dec 31
- Place of incorporation
- TX, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| N3943026C5001FRAMEWORKS FOR ASSESSING THE IMPACT OF EXTREME WEATHER EVENTS AT ENVIRONMENTAL RESTORATION SITES | Department of Defense | $1.0M | Mar 11, 2026 | Mar 30, 2029 |
| W912HQ23C0012ER22-7363 GSI ENVIRONMENTAL | Department of Defense | $1.6M | Dec 7, 2022 | Dec 5, 2027 |
| W912HQ23C0083ESTCP PROJECT ER23-7754 "ASSESSING MASS DISCHARGE FROM PFAS VADOSE VS. SATURATED ZONE VS. MATRIX DIFFUSION SOURCES TO IMPROVE CONCEPTUAL MODELS AND DOD RI/FS" | Department of Defense | $1.4M | Aug 28, 2023 | Aug 28, 2027 |
| W912HQ24C0049ESTCP PROJECT ER24-8156 THERMAL STEAM PLASMA TREATMENT OF VOLATILE PFAS EMISSIONS FROM THERMAL DESTRUCTIVE TECHNOLOGIES | Department of Defense | $1.6M | Jul 16, 2024 | Jul 15, 2029 |
| N3943024C2020BROAD AGENCY ANNOUNCEMENT (BAA) CONTRACT | Department of Defense | $375.9K | Sep 16, 2024 | Sep 15, 2027 |
| W912HQ24C0081ESTCP PROJECT ER24-8200. TITLE - TWO PFAS REMEDIATION MODELS FOR UNDERSTANDING AND MANAGING PFAS IN THE SATURATED ZONE. OBJECTIVE - DEVELOP 2 MODELS TO LEVERAGE EXISTING CODE… | Department of Defense | $876.4K | Aug 7, 2024 | Nov 29, 2027 |
| FA930226P0003SBIR PHASE 1 - SAGE: A SYSTEM FOR AI-GUIDED ENVIRONMENTAL REVIEW | Department of Defense | $140.0K | Mar 2, 2026 | Sep 1, 2026 |
| W912HQ25C0041ESTCP PROJECT ER25-8746 "COLLECTING AND COMMUNICATING PFAS REMEDIATION PERFORMANCE VIA A WEB BASED ESTCP TOOL" | Department of Defense | $391.3K | May 5, 2025 | May 5, 2030 |
| N3943025C2002INCREMENTAL FUNDING | Department of Defense | $270.0K | Feb 7, 2025 | Feb 9, 2028 |
| W912HQ25C0058ESTCP PROJECT EW25-8539 "CONVECTION-BASED GEOTHERMAL HEAT EXCHANGE FOR HIGH-EFFICIENCY BUILDING HEATING AND COOLING." GOAL - DEMONSTRATE THAT DARCY GEOTHERMAL HEAT EXCHANGE (GHX)… | Department of Defense | $2.1M | Aug 20, 2025 | Aug 19, 2030 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Jan 23, 2026 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Sep 27, 2001 |
| Entity start | Jul 11, 1986 |
| Industry | Reported size status |
|---|---|
| 115310 — Support Activities for Forestry | Not reported |
| 541330 — Engineering Services | Not reported |
| 541620 — Environmental Consulting Services | Not reported |
| 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology) | Not reported |
| 562910 — Remediation Services | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| MICHAEL J GROSSESTREUER | Government business | Contact method not published | SAM registration | Not available |
| STEPHEN D RICHARDSON | Alternate government business | Contact method not published | SAM registration | Not available |
| STEPHEN D RICHARDSON | Electronic business | Contact method not published | SAM registration | Not available |
| MICHAEL J GROSSESTREUER | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 115310 — Support Activities for Forestry
- 541330 — Engineering Services
- 541620 — Environmental Consulting Services
- 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology)
- 562910 — Remediation Services
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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About GSI ENVIRONMENTAL INC.
What products and services appear in its federal awards?
Recorded award industries: 541715 — Research and Development in the Physical, Engineering, and Life Sciences (except Nanotechnology and Biotechnology); 541620 — Environmental Consulting Services.
Recorded products and services: AJ11 — GENERAL SCIENCE AND TECHNOLOGY R&D SERVICES; GENERAL SCIENCE AND TECHNOLOGY; BASIC RESEARCH; AJ12 — GENERAL SCIENCE AND TECHNOLOGY R&D SERVICES; GENERAL SCIENCE AND TECHNOLOGY; APPLIED RESEARCH; AJ13 — GENERAL SCIENCE & TECHNOLOGY R&D SVCS; GENERAL SCIENCE & TECHNOLOGY; EXPERIMENTAL DEVELOPMENT.
Examples from recent award records:
- FRAMEWORKS FOR ASSESSING THE IMPACT OF EXTREME WEATHER EVENTS AT ENVIRONMENTAL RESTORATION SITES
- ER22-7363 GSI ENVIRONMENTAL
These records describe federal award work, not every company capability. Review the award evidence.
Where is the company registered?
2211 NORFOLK ST, HOUSTON, Texas 77098, United States
Registered location from SAM.gov; award performance locations may differ.
What is its primary registered industry?
541620 — Environmental Consulting Services.
Primary SAM.gov NAICS classification.
Which federal agencies are represented in its awards?
Department of Defense; Smithsonian Institution.
Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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