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Erica Hernandez, MS

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

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Erica "E.S." Hernandez is an environmental health scientist specializing in mycology, air quality, smoke impact evaluation, and wastewater systems, with experience spanning the US, Japan, the UK, and Mexico. With nearly a decade of experience in environmental laboratories, she understands quality assurance and analytical procedures. She has performed mold and smoke assessments, as well as provided microscopy services for combustion by-products and mold analysis. Recently, E.S. has focused on providing support for toxic tort litigation, leveraging its technical expertise in complex environmental health cases.

E.S. is fluent in Spanish and holds a Master of Science in Public Health with a concentration in Environmental Health from San Diego State University, as well as a Bachelor of University Studies from the University of New Mexico.

Key Expertise

  • Environmental Investigations
  • Litigation Support

Professional Affiliations/Memberships/Licenses/Training

  • OSHA 40 HAZWOP, 2025
  • Advanced Fungal Spore Identification, McCrone Research Institute, 2025
  • Introduction to Food and Airborne Fungi, CBS-KNAW Fungal Biodiversity Centre, 2019
  • Registered Microbiologist, National Registry of Certified Microbiologists, 2016-2019
  • Class D Wastewater Operator, State of Colorado, 2012-2014
  • Class D Water Operator, State of Colorado, 2012-2014

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.