Record Display for the EPA National Library Catalog


Main Title Follow-Up Alpha-Track Monitoring in 40 Eastern Pennsylvania Houses with Indoor Radon Reduction Systems. (Winter 1988-89).
Author Scott, A. G. ; Robertson, A. ;
CORP Author American ATCON, Inc., Wilmington, DE.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher Oct 89
Year Published 1989
Report Number EPA/600/8-89/083;
Stock Number PB90-134172
Additional Subjects Air pollution control ; Continuous sampling ; Houses ; Water pollution control ; Performance evaluation ; Ventilation ; Heat exchangers ; Water wells ; Charcoal ; Water filters ; Air pollution monitoring ; Indoor air pollution ; Water pollution sampling ; Soil gases ; Eastern Region(Pennsylvania)
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB90-134172 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 27p
The report gives results of 4-month-long alpha-track detector (ATD) measurements of indoor radon concentrations, completed during the winter of 1988-89 in 38 of 40 houses where radon reduction techniques had been installed 2-4 years previously during an earlier EPA project. The techniques, installed between June 1985 and June 1987, generally involved some form of active soil ventilation: three were air-to-air heat exchangers, and two involved carbon filters to remove radon from well water. The purpose of these measurements was to determine if the radon reduction performance of the systems had degraded compared to previous wintertime radon measurements. Comparison of the current ATD results with those from 1986-87 and 1987-88 indicates that, in the 34 houses where the system was in continuous operation during this measurement period, the radon levels generally compared well with those measured during the previous years. In only two houses did significant, unexplainable increases occur. Two soil ventilation fans failed during the previous year: 5 out of 34 fans have failed to date. One air-to-air heat exchanger has needed repair. The one water treatment unit designed specifically for radon removal is giving 97% removal, whereas the other has degraded to 65%.