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Health hazard evaluation report: HETA-84-337-1611, Federal Building, Dallas, Texas.
Markel r; L-HL
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Institute for Occupational Safety and Health, HETA 84-337-1611, 1985 Jul; :1-12
Environmental samples were analyzed for formaldehyde (50000), carbon- monoxide (630080), and carbon-dioxide (124389) at the Federal Building (SIC-9651), in Dallas, Texas in May and June, 1984. The evaluation was requested by the US Department of Labor and OSHA because of complaints of eye and upper respiratory irritation among employees on the second and eighth floors. The heating, ventilation, and air conditioning (HVAC) system was evaluated. Six employees were interviewed. Eye irritation, coughing and sneezing were the most common symptoms reported. No formaldehyde and only 0 to 4 parts per million carbon-dioxide were detected. Carbon-dioxide concentrations generally increased during the day, approaching twice the background concentrations. The supply of outside air to the second and eighth floors should have been adequate. Maintenance and operational problems such as a non operating fresh air intake, a dirty outside air fan filter, and missing ceiling tiles were found. The author concludes that no specific cause for the employees' complaints could be identified. Deficits in the HVAC system may have exacerbated the symptoms. Recommendations include establishing a preventive maintenance system for the HVAC system, balancing the system on the second floor, and replacing the missing ceiling tiles to maintain the effectiveness of the system.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazards-Unconfirmed; Office-workers; Region-6; Environmental-hazards; Ventilation; Air-monitoring; Respiratory-irritants; HETA-84-337-1611; Author Keywords: Regulation, Licensing, and Inspection of Miscellaneous Commercial Sectors; Closed Building Syndrome; Eye Irritation; Upper Respiratory Irritation; Ventilation
50-00-0; 630-08-0; 124-38-9
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: November 6, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division