Assessing the Impact of Sub-Slab Ventilation Systems (SSVS) on Indoor Air Concentrations Resulting from Indoor Air Sources

Assessing the Impact of Sub-Slab Ventilation Systems (SSVS) on Indoor Air Concentrations Resulting from Indoor Air Sources Assessing the Impact of Sub-Slab Ventilation Systems (SSVS) on Indoor Air Concentrations Resulting from Indoor Air Sources reducing observed indoor concentrations and has been used extensively to support the conclusion that vapor intrusion is occurring. However, the possibility that a VRS could reduce contaminant levels in the case of an interior source has not been thoroughly evaluated.