Abstract
Abstract This study was conducted to evaluate airborne asbestos concentrations during spray-buffing and wet-stripping of asbestos-containing resilient floor tile under three levels of floor condition (poor, medium, and good). Airborne asbestos concentrations were measured by transmission electron microscopy (TEM) before and during each floor care maintenance procedure in the breathing zone of the custodial personnel. Airborne total fiber concentrations were also measured by phase contrast microscopy (PCM) for comparison with the Occupational Safety and Health Administration (OSHA) permissible exposure limit (PEL) of 0.1 f/cm3, 8-hour time-weighted average. This study demonstrates that routine spray-buffing and wet-stripping of asbestos-containing resilient floor tile can result in elevated levels of airborne asbestos. Greater releases of airborne asbestos were observed during wet-stripping than during spray-buffing. The results of this study further suggest that multiple layers of sealant applied to the f...
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