HHE report no. HETA-97-0031-2656, Blue Cross and Blue Shield of Michigan, Grand Rapids, Michigan.
NIOSH 1997 Oct; :1-25
In response to a request from the United Auto Workers, an investigation was begun into possible indoor environmental quality at Blue Cross and Blue Shield (SIC-6324), Grand Rapids, Michigan. Nasal congestion, headaches, and flue like symptoms were reported among the workers there, which they believed to be associated with poor ventilation and air circulation problems. Carbon-dioxide (124389) concentrations increased slightly during the work day, but never exceeded 800 parts per million (ppm). Temperatures ranged from 72 to 74 degrees-F. Relative humidity ranged from 33 to 44%. Analysis of volatile organic compound samples revealed the presence of very low levels of ethanol (64175), acetone (67641), isopropanol (67630), toluene (108883), limonene (138863), butyl-Cellosolve (111762), and Freon, as well as aliphatic hydrocarbons. The results of ventilation system testing indicated that the tracer gas was dispersed relatively quickly to some areas, but much more slowly and in lesser amounts to others, indicating an adequate but uneven supply of outside air at the time of the survey. The tracer gas was also removed from the building somewhat slowly, highlighting the importance of limiting the sources of noxious odors in the building, or using local exhaust ventilation to control potentially troublesome odors. The authors conclude that hazardous conditions did not exist at the time of the survey.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-97-0031-2656; Hazard-Unconfirmed; Region-5; Indoor-air-pollution; Office-workers; Air-quality-monitoring; Closed-building-syndrome; Ventilation-systems; Air-quality; Indoor-environmental-quality
124-38-9; 64-17-5; 67-64-1; 67-63-0; 108-88-3; 138-86-3; 111-76-2
Hazard Evaluation and Technical Assistance; Field Studies
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-97-0031-2656, 25 pages, 21 references