What departments does Terraphase Engineering Inc. have?

Terraphase Engineering Inc. has employees across 9 departments including Finance, Human Resources, Operations, Business, Engineering.

What is the largest department at Terraphase Engineering Inc.?

The largest department at Terraphase Engineering Inc. is Engineering with 7 employees.

Where are Terraphase Engineering Inc. employees located globally?

Terraphase Engineering Inc. has employees across 2 continents and 3 countries including Viet Nam, United States Of America, Mexico.

How has Terraphase Engineering Inc.'s team size changed over time?

Terraphase Engineering Inc.'s team has decreased from approximately 144 to 114 employees based on available data.

Terraphase Engineering Inc. Employee Directory

Environmental ServicesCalifornia, United States51-200 Employees

Terraphase Engineering Inc. is an environmental services firm that delivers cost-effective solutions for complex environmental and engineering challenges. The company emphasizes understanding client needs and works within regulatory frameworks to help projects reach their objectives. Its multidisciplinary team combines engineers, geologists, and scientists to support a comprehensive environmental management approach. The firm is based in Oakland, California.

Terraphase has expanded its capabilities through strategic acquisitions, including Robinson Noble, Inc., which brought strengths in environmental characterization and remediation, as well as water resources, water rights, and geotechnical engineering. In 2025 the firm acquired Eolas Environmental, LLC, extending its presence into the Northeast with operations in Connecticut and Massachusetts.

Terraphase Engineering Inc. Global Highlights

North America
193

United States Of America
192
Mexico
1

Asia
1

Viet Nam
1

Terraphase Engineering Inc.'s Leadership

H. G.
Vice President Human Resources
Mobile Phone
Email
D. S.
President
Mobile Phone
Email
C. V.
Sr. Principal Geologist, Chief Revenue Officer
Mobile Phone
Email
J. L.
Principal/Director Of Operational Technology And Digital Strategy
Mobile Phone
Email
G. O.
Corporate Controller
Mobile Phone
Email
S. S.
Manager, Corporate Data Systems
Mobile Phone
Email
C. S.
Senior Business Services Manager
Mobile Phone
Email
J. F.
Administrative Operations Manager
Mobile Phone
Email

Terraphase Engineering Inc. Employee Metrics

100%

50%

0%

2026

2025

Biotechnology
Consultant
Human Resources
Administrative
Analytics
Other
Accounting

Contact profiles from Terraphase Engineering Inc.

Name

Title

Contact Info

Location

Last Update

B. O.
Senior Project Gis/Data Services Scientist
Mobile Phone
Email
Feb 27, 2026
A. S.
Senior Project Geologist
Mobile Phone
Email
United StatesMississippi
May 31, 2026
K. W.
Principal
Mobile Phone
Email
United StatesConnecticut
Oct 20, 2025
K. C.
Senior Project Coordinator/Staff Accountant Ii
Mobile Phone
Email
United StatesNebraska
Apr 17, 2026
A. M.
Senior Staff Engineer
Mobile Phone
Email
Sep 09, 2025
B. A.
Senior Staff Scientist
Mobile Phone
Email
Jun 25, 2026
I. S. R.
Principal Hydrogeologist
Mobile Phone
Email
United StatesPennsylvania
Mar 24, 2026
A. S. M. G.
Senior Staff I Geologist
Mobile Phone
Email
Oct 24, 2024
A. R.
Senior Project Engineer
Mobile Phone
Email
Oct 18, 2024
A. P.
Principal Consultant
Mobile Phone
Email
Oct 23, 2024

Frequently Asked Questions

What is Terraphase Engineering Inc. known for?

Terraphase Engineering Inc. was founded in 2010 operates in the Environmental Services industry. The company's main headquarters is located in 1300 Clay Street Suite 1000 Oakland, California United States; you can contact the main corporate office by phone at

+1-510-645-****

. Explore Terraphase Engineering Inc.'s company overview page for more information.

What is Terraphase Engineering Inc.'s most common email format?

Terraphase Engineering Inc. employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Terraphase Engineering Inc. email formats with LeadIQ.

How many employees does Terraphase Engineering Inc. have currently?

Terraphase Engineering Inc. has approximately 164 employees as of June 2026. These team members are located across 2 continents, including North AmericaAsia.

Who are Terraphase Engineering Inc.'s key employees and leadership?

As of June 2026, Terraphase Engineering Inc.'s key employees include:

Vice President Human Resources: H. G.
President: D. S.
Sr. Principal Geologist, Chief Revenue Officer: C. V.
Principal/Director Of Operational Technology And Digital Strategy: J. L.
Corporate Controller: G. O.

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Terraphase Engineering Inc. Employee Directory

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