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Vapor Barrier Membrane for Soil Gas Mitigation - GEO FORWARD What is a Vapor Barrier Membrane for Soil Gas Mitigation? A vapor barrier, or a sub-slab vapor membrane, is a layer of protective material that prevents toxic vapor intrusion into buildings An impervious vapor barrier can be a combination of plastic film, fabric, and sheets And there are also roll-on and spray-on applications
Vapor Mitigation Guide for Sites Enrolled in the VOAP Program This document establishes a process for evaluating concentrations of volatile organic compounds (VOCs) in soil gas and determining when vapor mitigation is warranted at Brownfield projects being managed under the VOAP
Passive Mitigation Fact Sheet – vim These systems physically block the entry of vapors into a building and or rely on natural mechanisms, such as chemical diffusion and thermal- or wind-induced pressure gradients to divert volatile organic compounds (VOCs) and soil gas, around the building (e g , to riser pipes)
Vapor Mitigation Systems - IN. gov Several technologies can reduce indoor air concentrations and or control completed vapor intrusion (VI) pathways The appropriate technology depends on the vapor source pathway, building construction, nature of the source, and indoor air contaminant concentrations
Vapor Intrusion Mitigation in Construction of New Buildings Fact Sheet Its purpose is to prevent the diffusion of soil gas and associated contaminants into the building The passive venting system serves as augmentation for the vapor barrier, rather than as the primary mitigation measure
Vapor Intrusion Mitigation System (VIMS) - GEO FORWARD A vapor intrusion mitigation system (VIMS) prevents the infiltration of toxic soil gases into modern buildings occupied by people These systems are necessary for developments above existing soil contamination plumes and groundwater pollution cases
Community Guide to Vapor Intrusion Mitigation - US EPA Vapor intrusion is the movement of chemical vapors from contaminated soil, groundwater or sewer lines into nearby buildings Vapors enter buildings primarily through openings, such as cracks and seams in the foundation or basement walls, gaps around utility lines, and sump pits