HHE Report No. HETA-85-432-1878, Chevron U.S.A., Inc., Port Arthur, Texas.
Markel-HL Jr.; Wilcox-TG
NIOSH 1988 Mar:22 pages
In response to a request, an evaluation was made of cancer incidence and possible hazardous conditions at the Chevron U.S.A. Laboratory (SIC-2911), Port Arthur, Texas. The laboratory employed about 75 chemists and technicians to perform product analyses and tests on environmental samples to satisfy Environmental Protection Agency requirements. Airborne concentrations of toluene (108883), xylene (1330207), n-heptane (142825), and n-hexane (110543) were all below the recommended OSHA levels. Five breathing zone samples and one general area air sample exceeded the NIOSH 0.1 part per million recommended exposure limit for benzene (71432). Some laboratory hoods did not meet minimum requirements to maintain contaminant concentrations below exposure limits. Deaths due to all malignant neoplasms were not found to be elevated. There was a statistically significant excess of rectal cancer. There were three deaths due to hematopoietic disorders. The authors conclude that the number of cases of rectal cancer and brain cancer exceed the number expected; these cases could not be linked with occupational exposure. Exposures to benzene present a potential health hazard. The authors recommend that ventilation be improved and strict enforcement of the Chevron safety procedure for dealing with benzene be maintained.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; NIOSH-Technical-Assistance-Report; HETA-85-432-1878; Region-6; Hazard-Confirmed; Chemical-industry-workers; Laboratory-workers; Chemical-analysis;
108-88-3; 1330-20-7; 142-82-5; 110-54-3; 71-43-2;
Hazard Evaluation and Technical Assistance;
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, U.S. Department of Health and Human Services, Cincinnati, Ohio, Report No. HETA-85-432-1878, 22 pages