U.S. EPA Contaminated Site Cleanup Information (CLU-IN)


U.S. Environmental Protection Agency
U.S. EPA Technology Innovation and Field Services Division

Search Result

DEMONSTRATION/VALIDATION OF MORE COST-EFFECTIVE METHODS FOR MITIGATING RADON AND VOC SUBSURFACE VAPOR INTRUSION TO INDOOR AIR
McAlary, T., W. Wertz, and D. Mali.
ESTCP Project ER-201322, 1346 pp, 2018

New lines of evidence and mathematical modeling were developed to aid in the design and performance monitoring of subslab venting systems for mitigation of radon and VOC vapor intrusion to protect the health of building occupants from inhalation exposures. Results indicate that system performance depends strongly on the relative permeability of the floor slab and the material below the floor slab, and that both parameters can be determined with reasonable confidence using tests and analysis that are rapid and affordable. Where coarse granular fill is present below a high quality floor slab, the radius of influence may extend to considerable distances, which reduces the number of suction points required and the associated capital cost. Where a system already exists, mass emission monitoring may help reduce the operation, maintenance, and monitoring costs. https://www.serdp-estcp.org/content/download/48949/466762/file/ER-201322%20Final%20Report.pdf Additional information: Executive Summary at https://www.serdp-estcp.org/content/download/49023/467416/file/ER-201322%20Executive%20Summary.pdf



The Technology Innovation News Survey welcomes your comments and suggestions, as well as information about errors for correction. Please contact Michael Adam of the U.S. EPA Office of Superfund Remediation and Technology Innovation at adam.michael@epa.gov or (703) 603-9915 with any comments, suggestions, or corrections.

Mention of non-EPA documents, presentations, or papers does not constitute a U.S. EPA endorsement of their contents, only an acknowledgment that they exist and may be relevant to the Technology Innovation News Survey audience.