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Health hazard evaluation report: HETA-81-416-1334, Trailways Bus System, Denver, Colorado.
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 81-416-1334, 1983 Jul; :1-11
Environmental samples were analyzed for sulfur-dioxide (7446095), nitrogen-dioxide (10102440), total particulates, carbon-monoxide (630080), and formaldehyde (50000) at Trailways Bus Systems (SIC- 4171), Denver, Colorado in July 1982. A survey was requested by a representative of the employees on behalf of the baggage handlers and porters because of concerns regarding exposure to diesel emissions. Air samples were taken from the terminal area and inside the building. Formaldehyde and nitrogen-dioxide were not detected. Sulfur-dioxide concentrations ranged from 0.03 to 0.9 milligrams per cubic meter (mg/m3), below NIOSH and OSHA standards of 1.3 and 13mg/m3, respectively. Total particulates were 1 percent or less of the OSHA standard of 15mg/m3. Carbon-monoxide concentrations ranged from 6 to 40 parts per millhon (ppm) in the terminal, and from 7 to 350ppm at the building air inlet. NIOSH and OSHA standards are 35 and 50ppm, respectively. The author concludes that no health hazard exists for employees in the terminal area. It is recommended that build up of emissions be avoided in the terminal.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; Hazard-Unconfirmed; Region-8; Ventilation; Air-sampling; Toxic-vapors; HETA-81-416-1334; Author Keywords: Terminal and Joint Terminal Facilities for Motor Vehicle Passenger Transportation; porters; baggage handlers; reservationists; diesel and auto emissions; carbon monoxide; sulfur dioxide; nitrogen dioxide; formaldehyde; total particulates
7446-09-5; 10102-44-0; 630-08-0; 50-00-0
Field Studies; Hazard Evaluation and Technical Assistance
NTIS Accession No.
National Institute for Occupational Safety and Health
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division