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Health Hazard Evaluation Report: HETA 94-0405-2551: Metropolitan St. Louis Sewer District, Lemay Wastewater Treatment Plant, St. Louis, Missouri
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1996/01/01
[PDF-282.50 KB]
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Description:In response to a request from the employer and employee representatives of the Metropolitan St. Louis Sewer District, Lemay wastewater treatment facility (SIC-4952), a health hazard investigation was begun. Workers reported headaches, burning sensation to the nose, loss of breath, sore throat, eye irritation, nausea, and diarrhea. There are 101 employees at the site. The maximum hydrogen-sulfide (7783064) concentrations in the personal breathing zone air samples ranged from nondetectable to 20 parts per million (ppm). Only one sample from a maintenance mechanic, which contained 20ppm, exceeded the NIOSH recommended exposure limit ceiling value of 10ppm. Endotoxin concentrations ranged from 1.08 to 5.51 units per cubic meter of air in the personal breathing zone air samples. Volatile organic compounds (VOCs) were identified in general area air samples at levels up to 0.40ppm
all concentrations were considered to be quite low. Incinerator ash was found under the incinerators and on the lower floors of the incinerator area. The author concludes that daily monitoring for hydrogen-sulfide should continue. The author recommends that personal hydrogen- sulfide monitors and respiratory protection be used when hydrogen- sulfide concentrations approach or exceed 10ppm.
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Pages in Document:33 pdf pages
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Contributor:DeArmond, Larry;Grote, Ardith A.;King, Michael V.;Millson, Mark B.;Olencheck, Steve;Pendergrass, Stephanie M.;Portlock, Amy Jo;Quigley, Robert L.;Whitmer, Mark;
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NIOSHTIC Number:nn:00233166
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NTIS Accession Number:PB97-124457
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Citation: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, HETA 94-0405-2551, 1996 Jan;:1-31;
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Federal Fiscal Year:1996
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Peer Reviewed:False
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