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Air Toxics Monitoring Results in the Houston-Galveston Area

Air Toxics Monitoring Results in the Houston-Galveston Area. David Brymer, Texas Commission on Environmental Quality. Top 20 Compounds (by annual average concentration) during 2004 from Houston Area. Annual Average CATMN 24-Hour Benzene Levels Monitored at Houston Area Sites in 2004.

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Air Toxics Monitoring Results in the Houston-Galveston Area

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  1. Air Toxics Monitoring Results in the Houston-Galveston Area David Brymer, Texas Commission on Environmental Quality

  2. Top 20 Compounds (by annual average concentration) during 2004 from Houston Area

  3. Annual Average CATMN 24-Hour Benzene Levels Monitored at Houston Area Sites in 2004 Annual ESL

  4. Is Benzene Trending Up or Down at Houston Area Sites ? Least Squares Regression Model CATMN 24-Hour Benzene

  5. Least Squares Plot of CATMN 24-Hour Benzene Levels at Clinton Drive

  6. Annual Average CATMN 24-Hour 1,3-Butadiene Levels Monitored at Houston Area Sites in 2004 Current ESL

  7. Is 1,3-Butadiene Trending Up or Down at Houston Area Sites? Least Squares Regression Model of CATMN 24-Hour 1,3 Butadiene

  8. Least Squares Plot of CATMN 24-Hour 1,3-Butadiene Levels at Clinton Drive

  9. n=15 0.35 0.3 0.25 0.2 ppbv 0.15 0.1 0.05 0 1997 1998 1999 2000 2001 2002 2003 2004 2005 benzene 1,3-butadiene Galveston Airport CATMN Annual Average Trends for Benzene and 1,3-Butadiene from 1997 - 2005 Considered Background for Houston Area

  10. 2 1.5 1 ppbv 0.5 0 1998 1999 2000 2001 2002 2003 2004 2005 benzene 1,3-butadiene Galena Park CATMN Annual Average Trends for Benzene and 1,3-Butadiene from 1998 - 2005 Benzene annual ESL

  11. Annual Average Highest 24-Hour 2nd Highest 24-Hour 40 37.4 35 31.6 30.9 30 23.4 25 20.5 Concentration (ppbv) 20 17.6 15.1 14.5 15 12.3 11.0 10.3 8.8 10 Current Annual ESL 4.4 4.0 3.5 3.2 5 2.4 2.1 0 1999 2000 2001 2002 2003 2004 Annual Average and Highest CATMN 24-Hour 1,3-Butadiene Levels Monitored at Milby Park 1999-2004

  12. How Representative are CATMN Data (every 6th day sampling) of an Annual Average? 1,3 Butadiene • AutoGC (6694 observations) = 0.62 ppbv • CATMN (59 observations) = 0.57 ppbv Benzene • AutoGC (6815 observations) = 0.67 ppbv • CATMN (59 observations) = 0.71 ppbv Comparison of Clinton Drive AutoGC and CATMN 2004 Annual Averages for Benzene and 1,3-Butadiene

  13. 2004 Annual Average 24- hr Formaldehyde Levels in Houston Area Av. US Site Conc. = 3.5 ppbV Rural Tx site • Clinton Drive data invalidated due to sampler problem

  14. Deer Park Annual Average Trends for Formaldehyde from 2000 - 2004 2003 US Average Site Concentration

  15. 2004 Annual Average 24 hr Values (ug/m3) of Chromium and Arsenic at NATTS sites Chromium ESL=0.1; Arsenic & Chrome VI ESL=0.01

  16. Deer Park Annual Average Trends for Chromium PM2.5 from 2000 - 2004 Chromium ESL=0.1; Chrome VI ESL=0.01

  17. Deer Park Annual Average Trends for Arsenic PM2.5 from 2000 - 2004 Arsenic (inorganic) ESL

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