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CASE STUDY OF RADON DIAGNOSTICS AND MITIGATION IN A NEW YORK STATE SCHOOL
Citation:
Leovic*, K, B. Harris*, M. Clarkin, AND T. Brennan. CASE STUDY OF RADON DIAGNOSTICS AND MITIGATION IN A NEW YORK STATE SCHOOL. INDOOR AIR 1(4):531-539, (1991).
Impact/Purpose:
Journal Article
Description:
The paper discusses a case study of radon diagnostics and mitigation performed by EPA in a New York State school building. esearch focused on active subslab depressurization (ASD) in the basement and, to a lesser degree, the potential for radon reduction in the basement and slab-on-grade (SOG) sections using the heating, ventilating, and air-conditioning (HVAC) system. ased on radon diagnostic measurements in the basement, a five-point ASD system was installed, and recommendations were made to increase the outdoor air supply through the basement unit ventilator. ecause of the high radon levels in the basement (1720 Bq/cu m) and limited subslab pressure field extension, both mitigation approaches were needed to reduce radon to below the current EPA guideline of 148 Bq/cu m. he effects of excavating a suction pit under each of the five suction point were also investigated. it excavation, together with adjustment of the airflows at the suction points, decreased average radon levels in the basement by an additional 40%. n the SOG section, it was recommended that the school hire and HVAC contractor to evaluate the unit ventilators for increased outdoor air supply. his was recommended both to improve indoor air quality and because diagnostic measurements indicated that an ASD system would require too many suction points in the SOG classrooms. Copy available at NTIS as PB92198571.
