Quarterly sub-slab vapor investigations were recently completed at a large automotive plant location in Southeast Michigan. The study was performed to determine if sub-slab vapor concentrations meet or exceed the MDEGLE VIAP criteria. The results of the sampling performed indicated sub-slab vapor concentrations in exceedance of the MDEGLE VIAP criteria for tetrachloroethene and trichloroethene, as well as numerous other compounds throughout the site.
State of Michigan guidance requires mitigation to prevent contaminated sub-slab vapors from migrating up from the subsurface through the floor into the structure indoor breathing spaces. ABF Environmental will manage and oversee the design and installation of a sub-slab depressurization system (SSDS). The SSDS with be installed subsequent to successful pilot testing which will determine the spacing of the vapor extraction wells for the sub-slab depressurization system.
The successful installation of the SSDS will ensure hundreds of facility employees of a safe and clean breathing environment.