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Health hazard evaluation report: HETA-94-0374-2534, University of Maryland, College Park, Maryland.
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HETA 94-0374-2534, 1995 Oct; :1-30
A study was conducted at the University of Maryland (SIC-8221), College Park, Maryland regarding the exposure of custodial workers to lead (7439921) during the performance of their duties. Personal breathing zone air samples collected for 16 workers were analyzed for lead, and blood lead levels were determined in 13 of the workers. During custodial and janitorial activities, time weighted average airborne lead concentrations ranged up to 36 micrograms/cubic meter (microg/m3); 44% of the samples contained no detectable lead. The highest short term exposures were recorded during the power belt sanding of a painted wooden door and during the heating of lead in a ladle during a plumbing repair. These levels were 36 and 26microg/m3, respectively. There were no detectable lead exposures occurring during the emptying of trash, sweeping floors, and vacuuming carpets. Lead content of paint chips ranged up to 19% by weight. Blood lead levels ranged from 2.8 to 10 micrograms/deciliter. These blood levels were normal for adults in this country. Of the 16 participants, nine occasionally wore a respirator on the job. The authors conclude that none of the tasks studied resulted in lead exposures in excess of the OSHA permissible exposure limit of 50microg/m3. The tasks producing the highest exposure levels were identified. Since those tasks which did produce the highest levels can be easily identified, the author recommends that these tasks be restructured.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-94-0374-2534; Hazard-Unconfirmed; Region-3; Lead-dust; Dust-exposure; Maintenance-workers; Housekeeping-personnel; Occupational-exposure; Author Keywords: Colleges, Universities, and Professional Schools; lead; blood lead level; custodial; janitorial
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division