Derrek-Ian G. Verlaan

Derrek-Ian G. Verlaan, ASP, CFEI, CVFI

Senior Staff Consultant

Mr. Derrek-Ian Verlaan has been performing scientific investigation, research, and consulting for over 20 years. His practice areas include environmental, construction, safety, and fire. He has performed and managed over 1000 projects related to Phase I and II Environmental Site Assessments, soil and groundwater testing, remediation, mold, indoor and outdoor air quality assessments, environmental litigation, and research.

As part of the ESi catastrophe response team, he conducts construction and safety consulting, origin, cause and damage assessment for large scale commercial and residential property losses resulting from natural disasters, fires, and explosions. He also investigates other property losses related to structural, fire, water damage, mold, and corrosive drywall. He performs safety consulting and manages safety projects related to premises liability, slip, trip and fall incidents, occupational safety and health, and research. Mr. Verlaan’s fire investigation experience includes origin and cause for property, vehicles, commercial vehicles, and marine fires, as well as investigation, research, and project management in support of subrogation and litigation claims. His mechanical background includes marine, powersports (ATV/UTV/PWC/motorcycle), automotive, HVAC, industrial, and hydraulic equipment.


  • Manual 43 Technical Aspects of Phase I/II Enviromental Site Assessments, Library of Congress, September 2007

Home Office

Florida - Fort Myers

12750 Commonwealth Drive Fort Myers, FL 33913
  • Phone: (239) 482-0500
  • Fax: (239) 482-2941

ESi's expertise spans dozens of industries and specializations organized across several practice groups, each staffed by dozens of in-house experts with the technical knowledge, hands-on expertise, and courtroom experience required to execute projects for and with our clients from start to finish.

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