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DNA Industrial Hygiene

The professionals resource
License Number 773462
Classifications A Haz

Comprehensive Site Assessment, Investigation, and Compliance Support

DNA Industrial Hygiene Consulting provides a full range of environmental services to help organizations evaluate site conditions, manage environmental risks, and comply with regulatory requirements. Since 1982, we’ve supported industrial, commercial, municipal, and institutional clients across California and nationwide with science‑driven assessments and practical, defensible solutions.

Our Certified Industrial Hygienists (CIH), Certified Asbestos Consultants (CAC), and environmental professionals deliver accurate evaluations, clear reporting, and responsive field support for projects of all sizes.
Phase I, II & III Environmental Site Assessments

We conduct thorough environmental site assessments (ESAs) to support property transactions, redevelopment, and regulatory compliance.
Services include:
  • Phase I ESA (ASTM‑compliant)
  • Phase II subsurface investigations
  • Phase III remediation planning and oversight
  • Historical site use evaluation
  • Regulatory file review
  • Soil, groundwater, and vapor sampling
  • Clear, defensible reporting
Applications: real estate transactions, due diligence, refinancing, redevelopment, and risk management.
Soil & Soil Vapor Investigations

We evaluate subsurface conditions to identify contamination, assess risk, and support remediation or closure.
Capabilities include:
  • Soil sampling and analysis
  • Soil vapor intrusion assessments
  • Sub‑slab and indoor air sampling
  • Contaminant delineation
  • Vapor mitigation recommendations
  • Regulatory coordination
Our investigations support safe redevelopment and regulatory compliance.
UST Removal & Site Closure

We manage underground storage tank (UST) investigations, removals, and closure documentation.
Services include:
  • UST removal oversight
  • Soil and groundwater sampling
  • Contamination assessment
  • Corrective action planning
  • Regulatory reporting and closure packages
We work closely with local agencies to streamline the closure process.
Hazardous Waste Management

We help organizations manage hazardous waste safely and compliantly.
Support includes:
  • Waste characterization and profiling
  • Storage and handling evaluations
  • Generator status determination
  • Waste minimization strategies
  • Regulatory compliance review
Our evaluations reduce risk and support safe, efficient operations.
Remediation Oversight

We provide independent oversight and verification for remediation projects.
Services include:
  • Work plan review
  • Field oversight and documentation
  • Confirmation sampling
  • Contractor coordination
  • Regulatory reporting
  • Closure documentation
Our oversight ensures remediation is effective, compliant, and defensible.
🌿Ecological & Biological Studies
We conduct environmental evaluations to support permitting, development, and compliance.
Capabilities include:
  • Habitat assessments
  • Biological surveys
  • Wetland evaluations
  • Sensitive species considerations
  • Mitigation recommendations
These studies support planning, permitting, and environmental stewardship.
Environmental Audits

We evaluate environmental programs, practices, and facility conditions to identify risks and compliance gaps.
Audits include:
  • Hazardous materials management
  • Waste handling and storage
  • Spill prevention and response
  • Stormwater and wastewater compliance
  • Air quality and emissions review
We provide clear, prioritized recommendations for improvement.
Risk Assessment & Management

We help organizations understand environmental risks and develop strategies to reduce or eliminate them.
Services include:
  • Exposure pathway analysis
  • Human health risk assessment
  • Contaminant fate and transport evaluation
  • Mitigation and control strategies
  • Regulatory coordination
Our assessments support informed decision‑making and long‑term risk reduction.


Why Clients Choose DNA

CIH‑Led Expertise - All major projects are overseen by Certified Industrial Hygienists with decades of field experience.
Clear, Defensible Reporting - Our documentation is structured for regulatory review, legal defensibility, and practical decision‑making.
Responsive Field Support - We mobilize quickly for urgent needs, including IAQ complaints, water intrusion, asbestos/lead disturbances, and environmental releases.
Comprehensive Capabilities - Industrial hygiene, environmental assessment, remediation oversight, and training — all under one roof.
Trusted Since 1982 - A long‑standing reputation for accuracy, professionalism, and client‑focused service.

Industries We Serve

Schools & Universities | Healthcare & Medical Facilities | Industrial & Manufacturing | Construction & Engineering | Real Estate & Property Management | Municipal & Government Agencies | Utilities & Infrastructure | Legal & Insurance Professionals
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