Project Highlights

  • Geo‐Seal®’s triple‐layer composite protection and high puncture resistance provided ease‐of‐mind to the client looking to mitigate vapor intrusion
  • Vapor‐Vent Trenchless Vent System installed to collect and remove buildup of vapors beneath the structure
  • Installation of 4,000 square feet

Project Summary

The construction of a new Compass Bank location was scheduled to be built over a site with chlorinated solvents residing in the subsurface. A vapor intrusion membrane was sought to prevent vapor intrusion entering the building from the contamination below. Initially, a simple spray‐applied asphalt/latex material was specified. However, TGE Resources requested Geo‐Seal be approved by the design engineer because of its superior chemical resistance and ability to prevent chlorinated solvent vapors from migrating into the new building’s construction.

Geo‐Seal was approved by Brownfield Subslab and favored as a superior alternative to the specified barrier because of its ability to resist contaminant permeation breakthrough for periods 18 times longer than a simple asphalt/latex membrane. Geo‐Seal proved to be a cost‐effective choice for the owner and was successfully installed along with Vapor‐Vent trenchless venting system. Overseeing the installation was Brownfield Subslab, a certified Geo‐Seal inspector.

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