| Abstract |
At the request of the U.S. Department of Agriculture (USDA), Animal and Plant Health Inspection Service (APHIS), the National Institute for Occupational Safety and Health (NIOSH) conducted industrial hygiene surveys at the U.S. Border Crossing Stations (Paso Del Norte Bridge (PDN) and Bridge of the Americas (BOTA)), El Paso, Texas, during the period August 25-26, 1979. Environmental measurements were made to determine inspectors' exposures to carbon monoxide (CO), lead (Pb), ozone (O3), benzene, sulfuric acid (H2SO4), particulate matter, sulfur dioxide (SO2), and nitrogen dioxide (NO2). Based on results obtained from this evaluation, NIOSH determined that no health hazard to inspectors existed at the Paso Del Norte Bridge and Bridge of the Americas. Some general area carbon monoxide exposures were, however, found to be above the recommended levels, and increases in inspectors' carboxyhemoglobin levels did occur during the work shifts. Recommendation relating to this evaluation are presented in the body of the full report. |
