Company Info

  • Est. 1990
  • DUNS # 845707066

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Our Story

The science, safety, and engineering professionals at Clark Seif Clark, Inc. (CSC) possess extensive experience delivering a wide range of environmental consulting, infection control, and industrial hygiene services, with particular emphasis on disciplines of indoor air quality (IAQ) and indoor environmental quality (IEQ). 

Since 1996, CSC’s services have included initial investigations, project monitoring, remediation closure testing, bid management, litigation support, expert testimony, and more.  We are truly a multidisciplinary team of professionals, guided by the same principles upon which the company was founded:

  • Direct and personal involvement of a Principal of the firm in every major contract
  • Clear and precise identification of client goals and needs
  • Timely, cost effective, and pragmatic solutions
  • Client satisfaction

As a result of these business principles, CSC has earned a national reputation for:

Applying Cutting-Edge Strategies:  CSC’s approach is multi-disciplinary, utilizing capabilities of specialists in all relevant areas of strategic environmental management: resource restoration and conservation policy, physical and earth sciences, geology, land use, environmental economics, remedial action planning, design and implementation and legacy management of environmental liabilities. 

Providing Highly Qualified Professional Staff:  CSC delivers integrated, sustainable solutions for land management reuse planning and environmental project management.  Dedicated to making a difference, staff focuses on client needs, builds strong stakeholder relationships and produces project outcomes that are in compliance with the rapidly evolving, complex regulatory arena. 

Tailoring Services to Exceed Client Expectations:  CSC’s strength lies within its ability to integrate highly skilled teams of environmental scientists, technical specialists and project managers into a cohesive consultative team.  The team focuses on developing innovative approaches that increase the sustainable value of real property assets.  This goal is achieved by balancing key project elements: scientific integrity, accountability (budget, schedule, quality), and best management practices for making and communicating project decisions.

What We Do

Commercial Experience

Misc Project
Airport Runway Animal Hospital / Kennel Apartments & Condominiums Arena / Stadium Assisted Living Athletic Field Auto Dealership / Service Bank Bridge Casinos Church / Synagogue City / Town Hall Civil & Site Development Club House / Community Center Court House Dams & Levies Data Centers - Mission Critical Design Build Education (K-12) Fire / Police Station Fitness Center Gas Station Golf Course Government Grocery Stores Historic Preservation Hospital / Nursing Home Hotel / Motel House Industrial Maintenance Jail / Prison Laboratory Library Lighting Retrofits Manufacturing Plant Marine Medical Office Military Mixed Use Museum Non-Building Construction Non-Residential Building Office Building Park / Playground Parking Garage Parking Lots Post Office Power Generation & Distribution Pre-Manufactured Structures Radio / Television Station Renewable Energy Residential Building Restaurant Retail Store Road / Highway School / College / University Secure and Shielded Facilities Sewage / Water Treatment Plant Single Family Residential Storage Facility / Warehouse Swimming Pool Tennis Court Terminal - Airport / Bus / Railroad Theater Theme Park Tract Housing Tunnel Utilities

Regions & Counties Serviced

  • San Francisco, Oakland, San Jose
  • California-Los Angeles and Vicinity
  • Orange, Riverside and San Bernardino Counties
  • Arizona
  • San Diego and Imperial Counties

Arizona All

California All

Nevada All

Our CSI Codes

01 81 19 - Indoor Air Quality Requirements
02 06 80 - Schedules for Facility Remediation
02 24 13 - Natural Environment Assessment
02 24 13.13 - Air Assessment
02 24 13.43 - Water Assessment
02 26 23 - Asbestos Assessment
02 26 26 - Lead Assessment
02 26 33.13 - Mold Assessment
02 32 23.13 - Groundwater Monitoring Before Construction
02 61 26 - Removal and Disposal of Asbestos Contaminated Soils
02 71 00.00.01 - Groundwater Treatment
02 82 13 - Asbestos Abatement
02 82 13.13 - Glovebag Asbestos Abatement
02 82 13.16 - Precautions for Asbestos Abatement
02 82 13.19 - Asbestos Floor Tile and Mastic Abatement
02 82 16 - Engineering Control of Asbestos Containing Materials
02 82 33 - Removal and Disposal of Asbestos Containing Materials
02 83 13 - Lead Hazard Control Activities
02 83 19 - Lead-Based Paint Remediation
02 83 19.13 - Lead-Based Paint Abatement
02 83 33 - Removal and Disposal of Material Containing Lead
02 83 33.13 - Lead-Based Paint Removal and Disposal
02 85 13 - Precautions for Mold Remediation
02 85 16 - Mold Remediation Preparation and Containment
02 85 19 - Mold Remediation Clearance Air Sampling
02 85 33 - Removal and Disposal of Materials with Mold
13 49 19 - Lead-Lined Materials
31 21 16 - Methane Mitigation
44 08 10 - Commissioning of Air Pollution Control

Project Experience

  • Non-Union
  • Public
  • Private
  • Service Work/Repairs
  • Projects Up to $100,000

Gallery

Featured Image 1
Methane measurements in Tempe, AZ
Featured Image 2
Methane measurements in Tempe, AZ
Featured Image 3
Presentation: Drug Residues in Gaming Facilities and Hotels
Featured Image 4
Drilling and injection project for in-situ treatment of chlorinated solvents
Service Area and Locations Map for Clark Seif Clark, Inc.

Associations & Memberships

ASHRAE (American Society of Heating, Refrigerating & Air Conditioning Engin
ASHRAE (American Society of Heating, Refrigerating & Air Conditioning Engin
AIHA (American Industrial Hygiene Assn.)
AIHA (American Industrial Hygiene Assn.)
IAQA (Indoor Air Quality Assn.)
IAQA (Indoor Air Quality Assn.)
ISNetworld
ISNetworld
NVLAP (National Voluntary Laboratory Accreditation Program)
NVLAP (National Voluntary Laboratory Accreditation Program)
ACAC (American Council for Accredited Certification)
ACAC (American Council for Accredited Certification)
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