What departments does Clark Seif Clark, Inc. (CSC), a part of J.S. Held have?

Clark Seif Clark, Inc. (CSC), a part of J.S. Held has employees across 1 departments including Environmental Services.

What is the largest department at Clark Seif Clark, Inc. (CSC), a part of J.S. Held?

The largest department at Clark Seif Clark, Inc. (CSC), a part of J.S. Held is Environmental Services with 1 employees.

Where are Clark Seif Clark, Inc. (CSC), a part of J.S. Held employees located globally?

Clark Seif Clark, Inc. (CSC), a part of J.S. Held has employees across 1 continents and 1 countries including United States Of America.

How has Clark Seif Clark, Inc. (CSC), a part of J.S. Held's team size changed over time?

Clark Seif Clark, Inc. (CSC), a part of J.S. Held's team has decreased from approximately 29 to 26 employees based on available data.

Clark Seif Clark, Inc. (CSC), a part of J.S. Held Employee Directory

Environmental ServicesCalifornia, United States11-50 Employees

Clark Seif Clark, Inc. (CSC) is an environmental services firm whose work centers on environmental consulting and industrial hygiene, with particular emphasis on indoor environmental quality and the regulatory aspects of soils and groundwater. Its services cover investigations, project monitoring, remediation closure testing, bid management, litigation support, and expert testimony for a diverse client base. Based in Chatsworth, Southern California, CSC serves clients nationwide and operates multiple offices, offering around-the-clock response for scheduled or emergency engagements.

Its expertise spans a broad set of environmental concerns, including asbestos, mold, mercury, lead-based paint, and other hazards, and it serves property managers, insurers, hospitals, schools and universities, attorneys, construction firms, and state or municipal agencies. In May 2026, CSC was acquired by J.S. Held, situating its environmental consulting and industrial hygiene capabilities within the broader platform of the acquiring firm.

Clark Seif Clark, Inc. (CSC), a part of J.S. Held Global Highlights

North America
38

United States Of America
38

Clark Seif Clark, Inc. (CSC), a part of J.S. Held's Leadership

T. K.
Manager
Mobile Phone
Email
N. H.
Environmental Consultant
Mobile Phone
Email

Clark Seif Clark, Inc. (CSC), a part of J.S. Held Employee Metrics

100%

50%

0%

2026

2025

Consultant
Program & Project Management
Administrative
Business
Accounting
Other

Contact profiles from Clark Seif Clark, Inc. (CSC), a part of J.S. Held

Name

Title

Contact Info

Location

Last Update

T. K.
Manager
Mobile Phone
Email
Oct 17, 2024
N. H.
Environmental Consultant
Mobile Phone
Email
Aug 02, 2026

Frequently Asked Questions

What is Clark Seif Clark, Inc. (CSC), a part of J.S. Held known for?

Clark Seif Clark, Inc. (CSC), a part of J.S. Held was founded in 1996 operates in the Environmental Services industry; you can contact the main corporate office by phone at

+1-480-460-****

. Explore Clark Seif Clark, Inc. (CSC), a part of J.S. Held's company overview page for more information.

What is Clark Seif Clark, Inc. (CSC), a part of J.S. Held's most common email format?

Clark Seif Clark, Inc. (CSC), a part of J.S. Held employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more Clark Seif Clark, Inc. (CSC), a part of J.S. Held email formats with LeadIQ.

How many employees does Clark Seif Clark, Inc. (CSC), a part of J.S. Held have currently?

Clark Seif Clark, Inc. (CSC), a part of J.S. Held has approximately 30 employees as of July 2026. These team members are located across 1 continents, including North America.

Who are Clark Seif Clark, Inc. (CSC), a part of J.S. Held's key employees and leadership?

As of July 2026, Clark Seif Clark, Inc. (CSC), a part of J.S. Held's key employees include:

Manager: T. K.
Environmental Consultant: N. H.

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Clark Seif Clark, Inc. (CSC), a part of J.S. Held Employee Directory

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Clark Seif Clark, Inc. (CSC), a part of J.S. Held Global Highlights

North America
38

Clark Seif Clark, Inc. (CSC), a part of J.S. Held's Leadership

Clark Seif Clark, Inc. (CSC), a part of J.S. Held Employee Metrics

Contact profiles from Clark Seif Clark, Inc. (CSC), a part of J.S. Held

Frequently Asked Questions

What is Clark Seif Clark, Inc. (CSC), a part of J.S. Held known for?

What is Clark Seif Clark, Inc. (CSC), a part of J.S. Held's most common email format?

How many employees does Clark Seif Clark, Inc. (CSC), a part of J.S. Held have currently?

Who are Clark Seif Clark, Inc. (CSC), a part of J.S. Held's key employees and leadership?

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Clark Seif Clark, Inc. (CSC), a part of J.S. Held Employee Directory

Find Clark Seif Clark, Inc. (CSC), a part of J.S. Held employees' phone numbers or email addresses

Name search is limited — try advanced search instead

Clark Seif Clark, Inc. (CSC), a part of J.S. Held Global Highlights

North America38

Clark Seif Clark, Inc. (CSC), a part of J.S. Held's Leadership

Clark Seif Clark, Inc. (CSC), a part of J.S. Held Employee Metrics

Contact profiles from Clark Seif Clark, Inc. (CSC), a part of J.S. Held

Frequently Asked Questions

What is Clark Seif Clark, Inc. (CSC), a part of J.S. Held known for?

What is Clark Seif Clark, Inc. (CSC), a part of J.S. Held's most common email format?

How many employees does Clark Seif Clark, Inc. (CSC), a part of J.S. Held have currently?

Who are Clark Seif Clark, Inc. (CSC), a part of J.S. Held's key employees and leadership?

Everything for prospecting,in one platform.

What you can expect from LeadIQ:

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North America
38

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