HHE report no. HETA-91-351-2252, Social Security Administration, District Office, Colorado Springs, Colorado.
NIOSH 1992 Sep; :1-24
In response to a confidential request, an investigation was begun into poor indoor environmental quality at the Social Security Administration (SIC-9441) District Office located in Colorado Springs, Colorado. Employees at that site had expressed concern over mucous membrane irritation, headaches, and poor air circulation. The District Office was located in a single story office complex, and employed 35 workers. Other businesses in the complex included a dry cleaners. Area air sampling was performed for formaldehyde (50000) and volatile organic compounds. Only one formaldehyde sample was above the minimum detectable concentration. Perchloroethylene (127184) was detected in indoor air at 0.18mg/m3 and in outdoor air at 0.30mg/m3. Temperature measurements were within the limits in most instances. Relative humidity was on the lower end of the comfort zone. Measurements of carbon-dioxide (124389) taken daily approached 1,000 parts per million (ppm), suggesting that an inadequate amount of dilution ventilation was occurring. The author concludes that no health hazard was identified. Entrainment of outside air contaminated with perchloroethylene from the dry cleaning establishment and low relative humidity may have been factors in employee complaints. The author recommends that efforts be made to improve the indoor air quality at this site by reducing the possibility of entrainment of air contaminated with perchloroethylene and improving ventilation.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-91-351-2252; Hazard-Unconfirmed; Region-8; Office-workers; Indoor-air-pollution; Chlorinated-hydrocarbons; Dry-cleaning-solvents; Ventilation-systems; Indoor-environmental-quality
50-00-0; 127-18-4; 124-38-9
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-91-351-2252, 24 pages, 39 references