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

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.

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

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

Location
Employees

North America
38

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  • United States Of America
    38

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

  • Manager at Clark Seif Clark, Inc. (CSC), a part of J.S. Held
    T. K.
    Manager
    Mobile Phone
  • Environmental Consultant at Clark Seif Clark, Inc. (CSC), a part of J.S. Held
    N. H.
    Environmental Consultant
    Mobile Phone

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
Location
Last Update
  • Manager at Clark Seif Clark, Inc. (CSC), a part of J.S. Held
    T. K.
    Manager
    Mobile Phone
    Oct 17, 2024
  • Environmental Consultant at Clark Seif Clark, Inc. (CSC), a part of J.S. Held
    N. H.
    Environmental Consultant
    Mobile Phone
    Sep 04, 2026

Frequently Asked Questions

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

Minus sign iconPlus sign iconClark Seif Clark, Inc. (CSC), a part of J.S. Held was founded in 1996 and operates in the Environmental Services industry. You can contact Clark Seif Clark, Inc. (CSC), a part of J.S. Held's 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?

Minus sign iconPlus sign iconClark Seif Clark, Inc. (CSC), a part of J.S. Held employees' email format typically follows the pattern of FLast@csceng.com. 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?

Minus sign iconPlus sign iconClark Seif Clark, Inc. (CSC), a part of J.S. Held has approximately 29 employees as of August 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?

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As of August 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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