Terraphase Engineering Inc.
Oakland, CA
- UEI
- MFB8MBN4FX54
- CAGE
- 65XN1
- Primary NAICS
- 541620 Environmental Consulting Services
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- Corporate family
-
-
- LNVJWT8GJ643
-
- SAM.gov registration date
- Physical address
- 1300 Clay St #1000, Oakland, CA 94612, USA
- Website
- terraphase.com
- Founded
- 2010
- Employees
- 51-250
- Estimated annual revenue
- $10M-$50M
- Industry
-
- Industrials
- Commercial & Professional Services
- Professional Services
- Consulting
- SIC code
- 89 Services, Not Elsewhere Classified
- Profiles
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $17,211 |
| FY2025 | $131,342 |
| FY2024 | $186,644 |
| FY2023 | -$35,199 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Transportation | $17,211 |
Contract vehicles
Expired vehicles (2)
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Rocky Mountain Environmental Consultants | Bountiful, UT | 541620 Environmental Consulting Services |
| Actenviro | San Jose, CA | 562910 Remediation Services |
| E & S Environmental Chemistry, Inc. | Corvallis, OR | 541620 Environmental Consulting Services |
| Aspen Environmental Group | Agoura Hills, CA | 541620 Environmental Consulting Services |
| Nortech, Inc. | Fairbanks, AK | 541620 Environmental Consulting Services |
About the company
Terraphase Engineering Inc. is a small business subchapter S corporation located in Oakland, California, specializing in environmental consulting, engineering, and technical services for federal agencies. The company provides comprehensive environmental assessments, hazardous materials management, and technical consulting across various federal sectors. Registered in SAM.gov since 2010, Terraphase has established itself as a versatile environmental services provider capable of supporting multiple government agencies with specialized environmental and technical expertise.
The company has secured federal contracts for a diverse range of environmental services, including environmental site assessments (ESA), hydrogeological consulting, CERCLA activities, ground penetrating radar services, and expert witness testimony. Terraphase has worked with agencies such as the U.S. Department of Agriculture's Forest Service, Environmental Protection Agency, Department of Health and Human Services' Indian Health Service, Department of Transportation's Maritime Administration, and Civil Division. Many of their contracts have been set aside for small businesses, demonstrating the company's ability to compete effectively in federal procurement. Contract values have ranged from $3,130 to $333,470, covering projects like environmental consulting for the Suisun Bay Reserve Fleet, water treatment plant hazardous materials assessments, and environmental engineering work for watershed mine sites.
Terraphase Engineering Inc. holds three significant federal contract Indefinite Delivery Vehicles (IDVs): a $1.5 million Multiple Award Schedule (MAS) contract with the General Services Administration's Federal Acquisition Service, a $7.5 million Blanket Purchase Agreement (BPA) with the U.S. Forest Service Pacific Northwest Region for hazardous materials services, and a $25 million Architect-Engineer Services IDIQ contract with the U.S. Department of Agriculture Forest Service Northwest Zone. These IDVs enable federal agencies to efficiently procure environmental consulting services across disciplines including environmental management, GIS, hazardous materials assessments, and technical support. The contracts cover regions including Oregon, Washington, and Alaska, and provide flexible procurement options for agencies seeking specialized environmental engineering and consulting services.
Quick answers
Is Terraphase Engineering Inc. registered in SAM.gov?
Yes. Terraphase Engineering Inc.'s SAM.gov registration is active through May 26, 2027.
Which contract vehicles does Terraphase Engineering Inc. hold?
Terraphase Engineering Inc. holds a place on 3 federal contract vehicles, including MAS.
How much has Terraphase Engineering Inc. received in federal contracts?
Federal contracts obligated $131,342 to Terraphase Engineering Inc. in fiscal year 2025 and $299,998 in fiscal years 2023 through 2027.
How does Terraphase Engineering Inc. rank among federal contractors?
Terraphase Engineering Inc. ranked #47 in PSC F103 and #47 in PSC F107 in FY2025.
What is Terraphase Engineering Inc.'s most recent federal award?
Terraphase Engineering Inc.'s most recent federal contract award is ESA services for 20 mile and 18 mile locations on the chugach national forest (1240BF25F0044), from Forest Service, on August 18, 2025.
On GovTribe
See Terraphase Engineering Inc.'s full federal record
- Federal contract awards
- IDV awards
- Contract vehicles
- Funding analysis by agency, NAICS and set-aside
- Similar vendors