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Technical Assistance Report No. TA-79-026-978, U.S. Border Crossing Stations, Laredo, Texas.

Authors
Markel HL; Ruhe R
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, TA 79-026-978, 1981 Oct; :1-17
Link
NIOSHTIC No.
00119721
Abstract
Worker exposures to airborne contaminants were surveyed on September 29 to October 1, 1979 at United States Border Crossing Stations (SIC- 4784) in Laredo, Texas. The evaluation was requested by the United States Department of Agriculture, Animal and Plant Health Inspection Service, on behalf of an unspecified number of inspectors. Noise levels and airborne contaminant concentrations were measured, and preshift and postshift carboxyhemoglobin (COHb) values were determined. Concentrations of carbon-monoxide (630080), lead (7439921), ozone (10028156), benzene (71432), sulfuric-acid (7664939), particulates, sulfur-dioxide (7446095), and nitrogen- dioxide (10102440) were below respective OSHA standards of 50 parts per million (ppm), 0.05 milligram per cubic meter (mg/cum), 0.1ppm, 32mg/cum ceiling concentration, 10mg/cum, 10mg/cum, 5ppm, and 5ppm ceiling concentration. Noise levels were less than 90 decibels relative to the A-weighted scale COHb values increased during the work shift. The authors conclude that no hazardous exposure exist for the inspectors. Recommendations are included for inspection of the heating and air conditioning equipment at the inspection stations, increasing the distance between vehicles awaiting inspection and the inspection booth, and job rotation periods of 30 minutes.
Keywords
NIOSH-Author; NIOSH-Technical-Assistance-Report; TA-79-026-978; Hazards-Unconfirmed; Region-6; Air-contamination; Health-surveys; Air-quality-measurement; Toxic-gases; Noise-pollution; Automotive-exhausts; Workplace-studies
CAS No.
630-08-0; 7439-92-1; 10028-15-6; 71-43-2; 7664-93-9; 7446-09-5; 10102-44-0
Publication Date
19811001
Document Type
Field Studies; Technical Assistance
Fiscal Year
1982
NTIS Accession No.
PB83-158519
NTIS Price
A03
Identifying No.
TA-79-026-978
NIOSH Division
DSHEFS
SIC Code
4784
Source Name
National Institute for Occupational Safety and Health
State
TX; OH
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division