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This study is purposed to measure airborne asbestos concentrations at demolition sites and surrounding areas of asbestos containing buildings in Seoul and examine whether the measurement results correspond with allowable exhaust standard for asbestos of the Asbestos Safety Control Act. The airborne asbestos concentrations for 37 sites were below the detection limit (7 fiber/mm) in 101 (35%) out of 288 samples. The whole average airborne asbestos concentration in 37 sites was 0.003±0.002 f/cc (max 0.0013 f/cc) and almost the whole airborne asbestos concentrations were satisfied with allowable exhaust standard for asbestos, 0.01 f/cc, of the Asbestos Safety Control Act. So possibility of asbestos exposure is not yet a major concern at current levels for sites demolished of asbestos containing buildings in Seoul. Looking at each sampling point, the average airborne asbestos concentrations in boundary line of site, entrance of sanitation, around the workplace (in), around the workplace (out), negative pressure units, storage area for waste, outlet for waste and residential area of residents were respectively 0.002±0.002 f/cc, 0.004±0.002 f/cc, 0.004±0.002 f/cc, 0.004±0.002 f/cc, 0.004±0.002 f/cc, 0.005±0.004 f/cc, 0.005±0.003 f/cc and 0.003±0.002 f/cc. As a result, all sampling points of study were satisfied with allowable exhaust standard for asbestos, 0.01 f/cc, of the Asbestos Safety Control Act.

A Study on Characteristics of Airborne Asbestos Concentrations at Demolition Sites and Surrounding Areas of Asbestos Containing Buildings in Seoul