Record Display for the EPA National Library Catalog

RECORD NUMBER: 39 OF 101

OLS Field Name OLS Field Data
Main Title Follow-Up Radon Measurements in 14 Mitigated Schools.
Author Dehmel, J. C. ; McCloskey, P. L. ; Mollyn, G. ;
CORP Author Cohen (S.) and Associates, Inc., McLean, VA.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher Oct 93
Year Published 1993
Report Number EPA-68-DO-0097; EPA/600/R-93/197;
Stock Number PB94-114758
Additional Subjects Radon ; Air pollution monitoring ; School buildings ; Indoor air pollution ; Natural radioactivity ; Alpha detection ; Alpha particles ; Soil gases ; Soil-structure interactions ; Environmental surveys ; Active soil depressurization
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB94-114758 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 02/27/1994
Collation 68p
Abstract
The report gives results of a determination of the long-term performance of radon mitigation systems installed in U.S. EPA research schools: radon measurements were conducted in 14 schools that had been mitigated between 1988 and 1991. The follow-up ATD measurements indicate that, overall, active soil depressurization (ASD) systems have been very effective in maintaining low long-term radon levels in the 14 schools. Of the 409 locations measured in these schools, only 17 (4%) of the measurements in mitigated areas exceeded 4 pCi/L. Eight of the 17 measurements were in the one basement school that was measured, one was in a room where the ASD fan had been turned off, and another was in a room with building pressurization that is operated only when the building is occupied. If these 10 measurements are dropped from the set, rooms above 4 pCi/L drop to < 2%.