Title: Evidence of a Sewer Vapor Transport Pathway at the USEPA Vapor Intrusion Research Duplex.  
Resource Type: document --> technical publication --> journal article 
Country: USA 
Language(s): English
Year: 2017 
Author 1/Producer: McHugh, T., L.  
Other Authors/Producers: Beckley, T. Sullivan, C. Lutes, R. Truesdale, R. Uppencamp, B. Cosky, JohnH Zimmerman, AND B. Schumacher. 
Author / Producer Type: University research group / research institute 
Journal Web Link: http://  
Start Page: 772 
End Page: 779 
Volume: 598 
Publisher Country: USA 
Publisher web link (root): https://cfpub.epa.gov/si/si_public_record_report.cfm?dirEntryId=336799
Article Weblink (=direct link): http://www.sciencedirect.com/science/article/pii/S0048969717 ...  
EUGRIS Keyword(s): Contaminated land-->Risk assessment-->Exposure pathways
Short description: Although some previous site remediation efforts have highlighted the importance of sewer lines in transporting VOCs, sewer lines are not routinely sampled during most vapor intrusion investigations, and their role as pathways for vapor intrusion are poorly understood. Researchers used tracer study and VOC concentration measurements to evaluate the role of the combined sanitary/storm sewer line in transporting VOCs at the USEPA vapor intrusion research duplex in Indianapolis, Indiana. The results from the tracer study demonstrated the migration of gas from the sewer main line into the duplex. The migration pathway appears to be complex and may include leakage from the sewer lateral at a location below the building foundation. These results combined with results from the prior multi-year study of the duplex suggest sewer lines should be routinely evaluated as part of these investigations. 
Submitted By: Professor Paul Bardos WhoDoesWhat?      Last update: 01/12/2017