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Phillip Ludvigsen, Ph.D.

J.S. Held Acquires Clark Seif Clark, Strengthening West Coast Capabilities for Environmental Claims, Disputes, and Catastrophe Response

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Dr. Phillip Ludvigsen specializes in environmental litigation support, ESG, and sustainable financing, such as green bond development and verification. He has authored and co-authored expert witness reports, rebuttals, and settlement memorandums for mediation, allocation, regulatory oversight, and litigation engagements, including superfund mega-sites, manufactured gas plant (MGP) cleanup programs, insurance claims, and international dispute resolution.

Dr. Ludvigsen provides subject matter expertise in support of mediation, allocation, regulatory oversight, and ongoing environmental litigation. He has extensive involvement in providing expert opinions on technical aspects of site remediation, historical waste generation, sustainable finance, ESG, and standard of care. He has consulted on climate-related financial and physical risk visualization, management, and municipal climate action planning.

Key Expertise

  • Expert Reports & Rebuttals
  • Environmental Litigation Support
  • Industrial Waste Estimations
  • MGP Contribution Analysis
  • Greenhouse Gas (GHG) Accounting/Reporting
  • Environmental, Social & Governance (ESG) Verification & Validation
  • International ESG Standards
  • Greenwash Assessment
  • Sustainable Finance (Green Bonds)
  • Knowledge Engineering (AI - Expert Systems)
  • Brownfield Redevelopment & Remediation
  • Environmental Investigations
  • Environmental Impairment Liability Assessment
  • Environmental Remediation
  • Environmental Risk Management
  • Environmental Monitoring
  • Soil Remediation
  • Environmental Due Diligence

Professional Affiliations/Memberships/Licenses/Training

  • American Society of Civil Engineers (ASCE), Life Member
  • Certified Responsible Investment Professional by RIA and PRI Academy
  • Certified GHG Quantifier and Verifier (CSA America Cert. # 0020A & 5503A)
  • International Standards Organization (ISO)
    • ISO Global Chair for TC207, SC4 on Environmental Performance Evaluation
    • U.S. Chair to Technical Advisory Group (TAG207), ANSI Representative, International Development of Environmental Management Standards
    • ISO's Strategic Leadership Group on Environmental Management, Member
  • SASB Expert Working Groups: Utilities, Oil & Gas, and Information Technology & Communications

J.S. Held is recognized as an ENR Top 200 Environmental Consulting Firm and industry leader in the Verdantix Green Quadrant for Sustainability & ESG Consulting.