Abstract
Surface and passive (deposition) samples were collected from an industrial facility that previously had partial asbestos abatement. Sampling, both surface and pas sive, was conducted in instrument control rooms and adjacent hallways. Complete abatement was performed in control rooms and partial abatement in hallways. The sampling time period for this study was 45 days. Sam pling was conducted from both vertical and horizontal surfaces using surface particulate adhesive and passive samplers (deposition-dust fall samplers). A floor sample exhibited the highest surface loading. Overall, floors and countertops had similar surface loading with walls hav ing the lowest. The highest wall surface loading did not exceed some of the lower values for floors and counter tops. Deposition of asbestos structures was low and con sisted primarily of structures smaller than 5 μm in length. Surface concentration in structures per square millime ters for surfaces ranged from the detection limit, which was less than 25, to approximately 363,400. Use of sur face and passive sampling for evaluating fallout and sur facing loads of asbestos is discussed. Copyright©2003 S. Karger AG, Basel
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