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GOLDEN TRIANGLE PROGRESS TOWARDS OZONE ATTAINMENT

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GOLDEN TRIANGLE PROGRESS TOWARDS OZONE ATTAINMENT

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    1. Data Source: URS Corporation 1 GOLDEN TRIANGLE PROGRESS TOWARDS OZONE ATTAINMENT

    2. Data Source: URS Corporation 2 Outline 2006 ozone levels Ozone trends Ozone precursor trends

    3. Data Source: URS Corporation 3

    4. Data Source: URS Corporation 4 Southeast Texas Ozone Monitors SETRPC and TCEQ Sites

    5. Data Source: URS Corporation 5 EPA Ozone Air Quality Index

    6. Data Source: URS Corporation 6 2006 Daily Maximum 1-Hour Ozone All TCEQ and SETRPC Monitors

    7. Data Source: URS Corporation 7 2006 Daily Maximum 8-Hour Ozone Beaumont

    8. Data Source: URS Corporation 8 2006 Daily Maximum 8-Hour Ozone West Orange

    9. Data Source: URS Corporation 9 2006 Daily Maximum 8-Hour Ozone West Port Arthur

    10. Data Source: URS Corporation 10 2006 Daily Maximum 8-Hour Ozone Hamshire

    11. Data Source: URS Corporation 11 2006 Daily Maximum 8-Hour Ozone Port Arthur

    12. Data Source: URS Corporation 12 2006 Daily Maximum 8-Hour Ozone Sabine Pass

    13. Data Source: URS Corporation 13 2006 Daily Maximum 8-Hour Ozone Mauriceville

    14. Data Source: URS Corporation 14 2006 Daily Maximum 8-Hour Ozone SE TX Regional Airport

    15. Data Source: URS Corporation 15 The 8-Hour Ozone Standard To attain this standard, the 4th-highest daily maximum 8-hour ozone level measured in a year must not exceed 84 ppb (when averaged over 3 consecutive years) All monitoring sites must pass the attainment test

    16. Data Source: URS Corporation 16 2006 8-Hour Ozone Summary

    17. Data Source: URS Corporation 17 2004-2006 8-Hour Ozone Summary

    18. Data Source: URS Corporation 18 Attainment of the 8-hour standard is not based on the number of exceedance days Instead, attainment is determined by the 4th highest daily maximum 8-hour ozone level – averaged over three consecutive years Sabine Pass is only nonattainment monitor 8-Hour Ozone 2004 – 2006 4th Highest Daily Max (ppb)

    19. Data Source: URS Corporation 19 8-Hour Ozone: Then and Now

    20. Data Source: URS Corporation 20 8-Hour Trend 4th Highest Daily Max Long-Term Progress Toward Attainment

    21. Data Source: URS Corporation 21 Ozone Precursor Emission Trends

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