Air Quality Update PASADENA CITIZENS ADVISORY COUNCIL

Transcription

1 Air Quality Update PASADENA CITIZENS ADVISORY COUNCIL December 5, 2013 Steve Smith Chairman Technical Advisory Committee

2 Discussion Topics Purpose and Mission Air Quality Data Trends Air Quality Key Messages 2

3 s Purpose is a voluntary industry-funded technical resource dedicated to performing ambient air monitoring and related special studies to better understand air quality in the Houston area With an annual operating budget of $2.3M accomplishes its goals through two program phases Monitoring Program - 10 sites Special Studies Program 3

4 Service Area 10 Mont Belvieu 4 Sheldon Rd 617 Wallisville C15 Channelview 3 Haden Rd 7 West Baytown 11 East Baytown C403 Clinton Dr. 1 Central St. 615 Lynchburg Ferry 16 Deer Park C169 Milby Park C1020 Chavez C35 Deer Park 8 LaPorte 4

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7 The Monitoring Data and Historical Data Trends 7

8 Days When Houston Area Monitors Exceeded EPA Ozone Air Quality Standard As of November 15, 2013 Significant Decline In Number of Ozone Exceedance Days 8

9 105 8-Hour Ozone Design Values 8 Hour Ozone Design Values Houston-Galveston-Brazoria Nonattainment Area Fort Bend 1985 to 2012 Brazoria 89 Galveston 1985 Ozone Monitors and Design Values (ppb-v) Ozone Concentration (ppb-v) Montgomery 85 < Liberty 121 Waller Harris Chambers Fort Bend Galveston 105 Brazoria 89 Ozone Monitors and Design Values (ppb-v) Ozone Concentration (ppb-v) 85 < 85 Significant Houston Area Air Quality Improvements

10 Cumulative 1-Hour Ozone Exceedance Days at a Single Site in the Houston Area 2013 YTD as of November 15, Hour Standard = 0.12 ppm No Monitor Exceeding the 1-Hour Standard 10

11 Cumulative 8-Hour Ozone Exceedance Days at a Single Site in Houston Area 2013 YTD as of November 15, Hour Standard = 0.08 ppm YTD No Monitors Have Design Values Greater than 0.08 ppm 11

12 Cumulative 8-Hour Ozone Exceedance Days at a Single Site in Houston Area 2013 YTD as of November 15, Hour Standard = ppm YTD Less than 50% Monitors Exceeding ppm 8-Hour Standard 12

13 Basic Ozone Chemistry Solar Energy Little or No Wind Clear Skies Ground Level Ozone (O 3 ) Formation Oxygen Industrial facilities Volatile Organic Compounds (VOC) On-Road Mobile Sources Off-Road Mobile Sources Plants The Largest Contributor Nitrogen Oxides (NO x ) Industrial facilities On-Road Mobile Sources Off-Road Mobile Sources Naturally Occurring 13

14 Annual Average NOx Concentration and Core Houston Area Monitors -- Crawford/Texas Ave, Clinton, Lang, Aldine 50% Reduction in Ambient NOx Concentrations Since

15 NOx Emissions Inventory (tons per day) 1, On-Road Mobile Sources Non-Road Mobile Sources Area Sources Point Sources % Reduction in total NOx emissions inventory Source: 15

16 VOC Emissions Inventory (tons per day) 1, On-Road Mobile Sources Non-Road Mobile Sources Area Sources Point Sources 27% Reduction in total VOC emissions inventory Source: 16

17 Total HRVOC Network Average Concentrations Houston Ship Channel PAMS-GC Monitoring Sites 68% Reduction in HRVOC Concentrations from 2003 through

18 Average Annual HRVOC Concentrations Houston Ship Channel PAMS-GC Monitoring Sites Note: Data for Wallisville Road in 2005 and 2006 are not complete; Wallisville, Lynchburg Ferry and 3 PAMS monitors are operated through a contribution of SEP funds. Significant HRVOC Reductions At All Sites 18

19 Annual Average BTEX Trends Network through 2012 BTEX Benzene, Toluene, Ethylbenzene, Xylenes every sixth day 24-hour composite canister sampling data 84% Reduction in BTEX Concentrations Since

20 Benzene Annual Averages PAMS-GC Monitor Sites 2007 through 2012 TCEQ Annual AMCV 1.4 ppb 20

21 Houston Area Annual PM 2.5 Statistics (mg/m 3 ) 3-Year Average Design Value EPA Secondary PM 2.5 NAAQS = 15 mg/m 3 ) EPA Primary PM 2. 5 NAAQS = mg/m 3 ) 1. To attain this standard, the 3-year average of the weighted annual mean PM2.5 concentrations from single or multiple community-oriented monitors must not exceed 15.0 mg/m3. 2. Data source: EPA Air Data, TCEQ TAMIS data base and TCEQ LEADS data base. All Area Monitors Below Annual Standard 21

22 Houston Area 24-Hour PM 2.5 Statistics (mg/m 3 ) 3-Year Average Design Value EPA 24-Hour NAAQS = 35 mg/m3 1. To attain this standard, the 3-year average of the 98 th percentile averaged over three years from single or multiple community-oriented monitors must not exceed 35 mg/m3. 2. Data source: EPA Air Data, TCEQ TAMIS data base and TCEQ LEADS data base. (FRM monitors not updated for 2012) All Area Monitors Below 24-Hour Standard 22

23 Houston Air Quality Communications Key Messages Houston has the most extensive air monitoring network in the country has a key role in the monitoring regional air quality in Houston The air monitoring data demonstrates that the quality of the air in the region has improved dramatically and continues to improve 23

24 Questions? 24