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Health hazard evaluation report: HHE-79-31-699, University Corporation for Atmospheric Research, Mauna Loa Observatory, Hilo, Hawaii.

Authors
Belanger-PL
Source
Cincinnati, OH: U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, HHE 79-31-699, 1980 Jun; :1-10
NIOSHTIC No.
00098076
Abstract
An environmental survey was conducted from September 24 to 26, 1979 at the Mauna Loa Observatory, Hawaii (SIC-8922). An authorized employer representative requested the evaluation to determine whether solar observers and engineers working at the observatory were exposed to toxic chemicals emanating from the Mauna Loa volcano five miles away. Personal breathing zone and area air samples were collected to measure concentrations of methyl-chloride (74873), methyl-iodide (74884), inorganic-mercury (7439976), sulfur-dioxide (7446095), sulfuric-acid (7664939), hydrogen-sulfide (7783064), and selenium (7782492) and other metals in the telescope control room and telescope room. Airborne concentrations of methyl-iodide, mercury, sulfuric-acid, trace metals and hydrogen-sulfide were below the limits of detection. Airborne concentrations of methyl-chloride ranged from 0.02 to 0.08 parts per million (ppm) and were well below the OSHA standard of 100ppm as an 8 hour time weighted average (TWA). Sulfur-dioxide concentrations ranging from 0.30 to 0.50ppm were all below or equal to NIOSH recommended criterion of 0.50ppm. The authors conclude that no hazard existed from exposure to any of the compounds.
Keywords
NIOSH-Author; HHE-79-31-699; Region-9; NIOSH-Health-Hazard-Evaluation; Hazards-Unconfirmed; Irritant-gas; Igneous-extrusion; Hazardous-chemicals; Inhalants; Inorganic-chemicals; Air-contaminants; Author Keywords: volcano; fumes; methylene chloride; sulfur dioxide
CAS No.
74-87-3; 74-88-4; 7439-97-6; 7446-09-5; 7664-93-9; 7783-06-4; 7782-49-2
Publication Date
19800601
Document Type
Field Studies; Health Hazard Evaluation
Fiscal Year
1980
NTIS Accession No.
PB81-111247
NTIS Price
A02
Identifying No.
HHE-79-31-699
NIOSH Division
DSHEFS
SIC Code
8922
Source Name
National Institute for Occupational Safety and Health
State
HI; OH
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