Volatilization to Indoor Air Pathway

2018-09-24T11:47:43+00:00 September 24th, 2018, 11:47am|

The Michigan Department of Environmental Quality (MDEQ) is currently reviewing site information from recently submitted Baseline Environmental Assessments, remedial investigation reports, and some historically closed sites to examine if the Volatilization to Indoor Air Pathway (VIAP) is a concern. Sites may now exceed current action screening levels and pose an environmental health threat. It may be a good time to investigate or review conditions on your property to protect the health, safety, and well-being of everyone who comes in your door.

To determine if the VIAP is a concern, some of our clients have requested consultation for VIAP properties due to petroleum and chlorinated solvent releases. The concern is that vapors from those releases may be migrating into the structure’s air spaces at concentrations that may pose a risk to building occupants. Vapors from chlorinated plumes have the potential to travel hundreds of feet and affect neighboring parcels or entire city blocks. Property owners and prospective purchasers may need guidance on sampling, real estate transactions, MDEQ action level criteria, liabilities, and Due Care responsibilities.

In cases where vapor concentrations are determined to exceed MDEQ action levels, a response action such as a sub-slab depressurization system can be installed to provide a safe breathing environment. Sub-slab depressurization systems are designed specifically for each structure to unobtrusively protect the occupants.

Contact Us today to discuss the details of your specific site concerns.