Services

Mitigation System Design

Custom vapor intrusion mitigation systems — designed by our specialists, tailored to your site's specific conditions and regulatory requirements.

Vapor intrusion occurs when volatile chemicals in contaminated soil or groundwater migrate into overlying buildings — posing health risks to occupants and regulatory challenges for property owners and developers.

Tetra designs site-specific mitigation systems to interrupt the vapor intrusion pathway, using sub-slab depressurization, passive venting, building pressurization, or a combination of approaches depending on site conditions and regulatory requirements.

We prepare complete contractor-ready design packages and can provide installation oversight to ensure the system performs as designed. Post-install performance testing confirms that indoor air quality meets applicable standards.

Services Provided

  • Vapor intrusion pathway assessment
  • Sub-slab depressurization (SSD) system design
  • Building pressurization system design
  • Passive ventilation system specifications
  • Contractor-ready design drawings and specifications
  • Installation oversight and quality assurance
  • Post-installation performance verification testing
  • Ongoing O&M support and monitoring

System Types

Sub-Slab DepressurizationMost common
Building PressurizationHVAC-based
Passive VentingLow-energy
Membrane BarriersNew construction

Get a Quote

Tell us about your site and we'll develop a tailored mitigation proposal.

Request a Quote