In response to an employee request, an investigation was begun into aircraft ground crew exposures to diesel and gasoline engine exhaust at Southwest Airlines (SIC 4512), at Houston Hobby Airport, Houston, Texas. Complaints centered around emissions from fuel trucks and belt loaders. All diesel equipment at the site used JP4 fuel rather than diesel as it was readily available. No emissions control equipment was used on any gasoline or diesel equipment. Employees suffered transient eye and throat irritation. Samples were taken for elemental carbon (7440440) (Ce), carbon-monoxide (630080) (CO), and nitrogen-dioxide (10102440) (NO2). The author concludes that a health hazard from exposures to CO or NO2 was not found at the time of the survey. The author recommends that efforts be made to control exposures to a greater extent.


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