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...to avoid contamination from nearby soil, vegetable debris, cooling towers, or ...

... carpets) . b) Clean and disinfect non-porous surfaces where microbial growth has occurred with detergents, chlorine-generating slimicides, or other biocides and ensuring that these cleaners have been removed before air-handling units are turned on. c) Maintain indoor air relative humidity below 60% (50% where cold surfaces are in contact with room air) . d) Adjust intake of outdoor air to avoid contamination from nearby soil, vegetable debris, cooling towers, or sanitary stacks unless air is adequately conditioned. ASBESTOS AND RADON Although acute health effects are not associated with asbestos and radon, we mention them due to recent concerns about their health effects. Asbestos may be found in: insulation and other building materials such as floor tiles, dry wall compounds, reinforced plaster. During renovation or maintenance operations, asbestos may ... . If ventilation is turned off during weekends or other periods, ensure that the system is on so that contaminant concentrations are sufficiently diluted prior to occupancy. 3) Supply adequate ventilation during and after completion of work to assist in diluting the contaminant levels. 4) Personnel affected with hypersensitivity should be thoroughly evaluated and the problem identified and corrected before returning them to the workplace. If, after the remedial action, the illness persists in the workplace, the affected personnel should be considered for permanent reassignment to another area. Eliminate or reduce contamination of the air supply. This includes contaminants such as cigarette smoke. Ban smoking or restrict it to designated areas that have their air discharged directly to the outdoors rather than recirculated. Excerpted with permission from SIC Safety Information Currents, Volume III, Number 6 ...