Vapor intrusion (VI) has received increased attention, and evolved rapidly over the last few years as a potential exposure pathway of concern in the investigation and remediation of contaminated sites. VI is defined as the migration of volatile chemicals from the subsurface into overlying buildings (USEPA 2002b). The presence of volatile organic compounds (VOC) in soil or ground water offers the potential for chemical vapors to migrate through subsurface soils and along preferential pathways (such as underground utility lines), potentially impacting the indoor air quality of affected buildings.
The accumulation of volatile vapors in impacted structures can result in more immediate health concerns associated with high levels of contaminants, as well as the potential for chronic (i.e., long term) health effects associated with lower levels of site related contaminants.
Professionals at LJS Construction, LLC have many years of experience at both designing and installing effective solutions to VI and Radon issues that occur on many diverse sites. Our team has worked on Radon pre-construction for private sector for tier I areas and the New Jersey Schools Development Authority, which has designed pre-piping systems for all schools regardless of the tier designation. Because LJS Construction is a full service construction company, we understand building techniques and potential problems that are faced when trying to extend vacuum under the slab. For this reason, LJS Construction works closely with the Architect and General Contractor to ensure the system will extend the proper vacuum needed to keep any soil born contaminants out of our children’s schools.
Our Staff has successfully designed systems for many strip malls that have been contaminated with dry cleaning fluids. Our staff has performed soil permeability mapping, building diagnostics and sub surface air flow testing, therefore allowing us to collect the necessary information to design ASD systems that remediate structures where high levels of PCE and TCE were present.