LEVEL 1 HAZMAT FOR DANGEROUSLY HIGH CO READING ON SOUTH CHAMPLAIN AVE, CHICAGO

    TUE JUL 16 2013 ~10:35 AM
    CHICAGO FIRE DEPARTMENT
    LEVEL I HAZMAT/GAS ODOR
    8084 CHAMPLAIN CHICAGO, IL

    ENG ON ARRIVAL REPORTS HIGH CO READING OF 1000 PPM, BLDG EVACUATED. GAS-POWERED POWER WASHER WAS BEING USED INSIDE THE BASEMENT.

    OSHA standards prohibit worker exposure to more than 50 PPM (parts of the gas per million parts of air) averaged during an 8-hour time period.


    Following information compiled by CDC/NIOSH ...

    Immediately Dangerous To Life or Health Concentrations (IDLH)
    The chosen IDLH is based on the statement by Patty [1963] that a 1-hour exposure to 1,000 to 1,200 ppm would cause unpleasant, but no dangerous symptoms [Henderson et al. 1921]. Patty [1963] also reported that 1,500 to 2,000 ppm might be a dangerous concentration for an exposure of 1 hour [Henderson et al. 1921].

    Existing short-term exposure guidelines: National Research Council [NRC 1987] Emergency Exposure Guidance Levels (EEGLs):
    10-minute EEGL: 1,500 ppm

    30-minute EEGL: 800 ppm

    60-minute EEGL: 400 ppm

    24-hour EEGL: 50 ppm

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    Reference:
    Patty FA, ed. [1963]. Industrial hygiene and toxicology. 2nd rev. ed. Vol. II. Toxicology. New York, NY: Interscience Publishers, Inc., p. 930.

    Henderson Y, Haggard HW, Teague MC, Prince AL, Wunderlich RM [1921]. Physiological effects of automobile exhaust gas and standards of ventilation for brief exposures. IV. Concordance of the standard here proposed with the observations of other investigators. J Ind Hyg III(4):137-146.

    NRC [1987]. Emergency and continuous exposure guidance levels for selected airborne contaminants. Vol. 7. Ammonia, hydrogen chloride, lithium bromide, and toluene. Washington, DC: National Academy Press, Committee on Toxicology, Board on Toxicology and Environmental Health Hazards, Commission on Life Sciences, National Research Council, pp. 17-38.

    See also ...
    Carbon monoxide Documentation for Immediately Dangerous To Life or Health Concentrations (IDLHs)

    OSHA FACT SHEET ...

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