Record Display for the EPA National Library Catalog


Main Title Testing of indoor radon reduction techniques in basement houses having adjoining wings /
Author Messing, Marc.
CORP Author Infiltec, Falls Church, VA.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher U.S. Environmental Protection Agency, Air and Energy Engineering Research Laboratory,
Year Published 1990
Report Number EPA/600/8-90/076; EPA-68-02-4287
Stock Number PB91-125831
Subjects Radon--Safety measures--Evaluation ; Radon--Testing
Additional Subjects Radon ; Houses ; Basements ; Air pollution control ; Soils ; Maryland ; Slabs ; Soil pressure ; Pressurizing ; Indoor air pollution ; Crawl spaces ; Radiation monitoring ; Active soil depressurization
Library Call Number Additional Info Location Last
NTIS  PB91-125831 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 212 pages ; 28 cm
The report gives results of tests of indoor radon reduction techniques in 12 existing Maryland houses, with the objective of determining when basement houses with adjoining wings require active soil depressurization (ASD) treatment of both wings, and when treatment of the basement alone is sufficient. In five basement houses with adjoining slabs on grade, ASD treatment of both wings provided an incremental additional radon reduction of 0 to 5.2 pCi/L, compared to ASD treatment of either one of the slabs alone. However, basement-only treatment reduced radon to <4 pCi/L in all five houses. In six basement houses having adjoining crawl spaces, ASD treatment of both wings (including sub-liner depressurization of the crawl space) provided little additional reduction compared to basement-only treatment, when sub-slab communication was good. When communication was not good, treatment of both wings was required to achieve <4 pCi/L. Tests of one fully slab-on-grade house showed that, when there is good aggregate under the slab, a one-pipe sub-slab depressurization system can achieve <1-2 pCi/L, even when there are forced-air supply ducts under the slab.
Caption title. "November 1990." "EPA/600/8-90/076." Microfiche.