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Chicago O’Hare Airport Air Toxic Monitoring June – December, 2000. Illinois Environmental Protection Agency. Full Report Can Be Found At URL: www.epa.state.il.us/air/ohare/index.html. Monitoring Objectives Determine ambient concentrations of specific compounds of concern

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Chicago O’Hare Airport

Air Toxic Monitoring

June – December, 2000

Illinois Environmental Protection Agency


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Full Report Can Be Found At URL:

www.epa.state.il.us/air/ohare/index.html


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  • Determine ambient concentrations of specific compounds of concern

  • Describe pollutant levels at various locations across the area, assess their geographic variability and perform a comparison of the levels of air toxics found at O’Hare Airport to other sites in the Chicago area

  • Provide monitoring results consistent with nationally available air toxics information that would allow for a comparison of Chicago area results to data collected for other large U.S. cities

  • 4. Determine if the target compound emissions from O’Hare Airport have a measurable impact on air quality in the surrounding communities.


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    18 Core Toxic Pollutants

    VOC Metals Carbonyls

    Benzene Arsenic Acetaldehyde

    1,3 Butadiene Beryllium Formaldehyde

    Carbon Tetrachloride Cadmium

    Choroform Chromium

    1,2 dichloropropane Lead

    Methyl chloride Manganese

    Tetrachloroethylene Nickel

    Trichloroethylene

    Semi-volatile

    Polycyclic Organic Matter, Total PaH(s)


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  • 1. volatile organics (53 compounds) - TO-15, gas chromatography with mass

  • spectroscopy (confirmation)

  • 2. carbonyls (14 compounds) - TO-11a, high pressure liquid

  • chromatography

  • 3. semi-volatile organics (18 cmpds) - TO-13a gas chromotagraphy and mass

  • spectroscopy analysis

  • 4. particulate metals (8 compounds) - atomic absorption


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    Comparison of Results by Site

    Site Listing

    B – Bensenville

    S – Schiller Park

    C – Chicago Washington

    N – Northbrook

    L - Lemont


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    Comparison of Results by Site

    Site Listing

    B – Bensenville

    S – Schiller Park

    C – Chicago Washington

    N – Northbrook

    L - Lemont



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    Conclusions

    • The levels of air toxic compounds found near O’Hare Airport and at other

      sites in the Chicago metropolitan area are “typical” or lower that those levels found in other large U.S. cities.

    • Of the Chicago area sites, the highest levels of acetaldehyde and

      formaldehyde were found at the O’Hare Airport sites. However, the

      concentrations found were at levels comparable or lower than those found in other large U.S. cities.

    • Of the Chicago area sites, the highest levels of most air toxic compounds was not found near O’Hare Airport, but in industrialized Southeast Chicago.

    • An analysis of data from the sites near O’Hare Airport found that emissions from the airport have an impact on air quality in the areas adjacent to the airport. However, the airport’s impact did not result in levels higher than those found in a typical urban environment.