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Health hazard evaluation report: HETA-81-452-1128, Santa Cruz Metropolitan Transit District, Santa Cruz, California.

Authors
Belanger-PL; Coye-MJ
Source
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 81-452-1128, 1982 Jun; :1-17
NIOSHTIC No.
00127499
Abstract
Exposures to fuel and exhaust fumes were investigated. The General Manager for Santa Cruz Metropolitan Transit District (SIC-4111) requested the investigation which was performed on September 23 to 25, 1981. The manager was concerned about complaints of eye and upper respiratory irritation reported by about 25 bus drivers. Peak carbon-monoxide (630080) concentrations for gasoline powered buses averaged 6 parts per million (ppm) and peak total hydrocarbons average 3ppm. The NIOSH standards are 35ppm for carbon-monoxide and 350 milligram per cubic meter for alkanes C5 to C8. For diesel engine buses, carbon-dioxide (124389), nitrogen-dioxides (10102440), and sulfur-dioxides (7446095) concentrations were below the limit of the detection. No formaldehyde (50000) was detected. Total soot ranged from none detectable to 0.06 milligrams per cubic meter. For 17 bus drivers, there was no significant difference between preshift and postshift carboxyhemoglobin concentration. The authors conclude that drivers were not overexposed to raw fuel and exhaust fume pollutants. Symptoms reported by the drivers were consistent with either intermittent diesel fume exposure or intermittent uncombusted gasoline vapor exposure.
Keywords
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; Hazards-Unconfirmed; Occupational-exposure; Chronic-exposure; Diesel-exhausts; Transportation-workers; HETA-81-452-1128; NIOSH-Technical-Assistance-Report; Author Keywords: Local and Surburban Transit; Diesel and Gasoline Exhaust Fumes; Raw Gas Odor; Carbon Monoxide; Carbon Dioxide; Nitrogen Dioxide; Sulfur Dioxide; Soot; Formaldehyde
CAS No.
630-08-0; 124-38-9; 10102-44-0; 7446-09-5; 50-00-0
Publication Date
19820601
Document Type
Field Studies; Hazard Evaluation and Technical Assistance
Fiscal Year
1982
NTIS Accession No.
PB84-138254
NTIS Price
A03
Identifying No.
HETA-81-452-1128
NIOSH Division
DSHEFS
SIC Code
4111
Source Name
National Institute for Occupational Safety and Health
State
CA; OH
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