Sean Trimble

Senior Geologist

Sean is a geologist licensed in Washington and Texas with over 20 years of professional experience as a project manager, technical lead, and task manager in the United States, Canada, Central America, and South America. He conducts site assessments, human health risk assessments, fate and transport modeling, and provides litigation support for projects with soil, groundwater, and surface water contamination issues. Sean is experienced with site characterization and remediation; implementation and evaluation of remediation technologies; remediation of oil and gas refineries; management of the stakeholder involvement process with concerned citizen groups, Tribal Nations, property owners, and regulatory authorities.

Proficiencies and Experience

  • Soil and Groundwater Characterization, Investigation, and Assessments
  • Remedial Investigations and Feasibility Studies
  • Terrestrial Ecological Evaluations
  • Cleanup Action Plan Development and Permitting
  • Enhanced Reductive Dechlorination (ERD)
  • Air Sparging/Soil Vapor Extraction (AS/SVE)
  • Monitored Natural Attenuation
  • CERCLA/RCRA/TSCA Compliance
  • Insurance Defense and Coverage Support
  • Regulatory Strategy Development, Closure, and NFA Support
  • Chemical Fate and Transport Modeling
  • Hydrogeologic Field Investigations