Thermal Remediation Assessment & Implementation

Site Description  

EHS Support was retained to address the historical sources of organic contamination at a multi-use commercial site, allowing the owner and key stakeholders to achieve site closure and enable site reuse within an expedited timeframe.  

Site Complexity: 

  • Existing 80,000 sf structure located near a water body 
  • Geology comprised of heterogeneous fill material overlying lower permeability, low density, and low strength clays 
  • Shallow saline groundwater 
  • Volatile organic compound mass estimate of ~10-30 tons, predominantly as chlorinated solvent dense nonaqueous phase liquids 
  • Majority of mass located at or below the fill/clay contact (20-55 ft below ground surface) and beneath the structure (a treatment area of ~25,000 sf) 
  • Multiple stakeholders 

Project Overview 

Based on the remediation goals and stakeholder needs, thermal remediation was identified as the only viable remedy. 

Prior to implementation, a risk assessment was conducted as part of the feasibility study to determine the implementability and effectiveness of thermal remediation. Critical design questions included: 

  • Implementability: Can thermal remedy be completed within existing building without permanent adverse effects to building? 
  • Effectiveness: Will thermal remedy be able to achieve remediation goals given implementability constraints?


Stakeholder engagement and collaboration in conjunction with technical expertise have been critical to the cleanup at this complex site, especially during the remedy selection and remedy design process.  



Related Posts