HHE Report, No. HETA-81-432-1105, Roofing Sites, Rochester and Buffalo, New York.
NIOSH 1982 May:12 pages
Exposure to coal-tar (8007452) tearoff and asphalt roofing applications were investigated on October 12 to 14, 1981 in Rochester and Buffalo (SIC-1761), New York. Evaluation was requested by the Director of Safety and Health, United Union of Roofers, Waterproofers, and Allied Workers. Fourteen workers were employed. Personal and area air samples were collected to determine concentrations of cyclohexane soluble coal-tar products, polynuclear aromatics (PNAs), acetone (67641), toluene (108883), xylene (1330207), and hexane (110543). Dust exposures during tearoff procedures were 1.8 to 6.2 milligrams per cubic meter (mg/m3). Respirable particles were 0.67 to 1.7mg/m3, compared to ACGIH exposure limits of 10 and 5mg/m3, respectively. Exposures to cyclohexane solubles ranged up to 0.51mg/m3. NIOSH recommended upper limit is 0.1mg/m3. Several PNAs were identified with concentrations as high as 27 micrograms per cubic meter. No safe exposure limit is known. Highest cyclohexane soluble and PNA exposures were found in workers exposed during tearoff. Concentrations of organic solvents for workers applying adhesives were less than 13 percent of their respective evaluation standards. The author concludes that workers are exposed to excessive amounts of coal-tar pitch dust, but not to solvent vapor. Recommendations to improve work practices and avoid exposures are made.
NIOSH-Author; NIOSH-Health-Hazard-Evaluation; Hazards-Confirmed; Occupational-exposure; Work-practices; Skin-sensitivity; Polynuclear-aromatic-hydrocarbons; Roofers; HETA-81-432-1105; NIOSH-Technical-Assistance-Report; Region-2;
8007-45-2; 67-64-1; 108-88-3; 1330-20-7; 110-54-3;
Hazard Evaluation and Technical Assistance; Field Studies
NTIS Accession No.
Hazard Evaluations and Technical Assistance Branch, NIOSH, Cincinnati, Ohio, 12 pages, 5 references