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Technical assistance report no. TA-76-91, Front Royal and Panorama Entrance Stations, Shenandoah National Park, Luray, Virginia.

Authors
Anonymous
Source
NIOSH 1976 Nov; :1-11
Link
NIOSHTIC No.
00124524
Abstract
Worker exposures to carbon-monoxide (630080) (CO), sulfur-dioxide (7446095) (SO2), sulfuric-acid (7664939) (H2SO4), and lead (7439921) were determined at the Front Royal and Panorama Entrance stations of the Shenandoah National Park (SIC-7999) in Luray, Virginia, on August 28 and 29, 1976. The request for the evaluation came from the Assistant Director of Concessions, United States Department of Interior, National Park Service, on behalf of an unspecified number of park rangers exposed to automobile exhaust emissions at the two entrance stations. The time weighted average (TWA) concentration of CO at the Front Royal Station was 29.28 parts per million (ppm), and 26.54ppm at the Panorama Station, compared with the OSHA standard of 50ppm. Breath analysis of rangers for CO and corresponding carboxyhemoglobin, revealed carboxyhemoglobin concentrations ranging from 1.9 to 6.1 percent, compared with the five percent limit recommended by NIOSH. SO2 concentrations ranged from 0.11 to 0.83 milligrams per cubic meter (mg/CuM), compared with the OSHA standard of 5mg/CuM. H2SO4 concentrations were in the range of 0.18 to 1.14mg/CuM, compared with the OSHA standard of 1mg/CuM. Lead exposures ranged from 1.81 to 5.62 micrograms per cubic meter, lower than the proposed OSHA standard of 0.1mg/CuM. The authors recommend positive pressure ventilation systems for the stations and shorter working hours in the stations for the rangers.
Keywords
NIOSH-Author; NIOSH-Technical-Assistance-Report; TA-76-91; Hazards-Unconfirmed; Region-3; Toxic-gases; Health-surveys; Combustion-products
CAS No.
630-08-0; 7446-09-5; 7664-93-9; 7439-92-1
Publication Date
19761101
Document Type
Hazard Evaluation and Technical Assistance; Field Studies
Fiscal Year
1977
NTIS Accession No.
PB89-165211
NTIS Price
A03
Identifying No.
TA-76-91
NIOSH Division
DSHEFS
SIC Code
7999
Source Name
Hazard Evaluations and Technical Assistance Branch, NIOSH, Cincinnati, Ohio, 11 pages, 6 references
State
VA; OH
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