Pasadena Citizen s Advisory Council 2018 Ambient Air Monitoring Report

Transcription

1 Pasadena Citizen s Advisory Council 2018 Ambient Air Monitoring Report Bradley Flowers, Ph. D. Project Manager Network 1

2 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 $2.3MM, accomplishes its goals through two program phases Monitoring Program Special Studies Program 2

3 How does contribute to the understanding of air quality? Provides monitoring data to assist member companies with permitting issues Provides data to improve the science basis for 8- Hour Ozone SIP Collects and analyzes PM data to understand potential non-attainment issues Provides data to: Support Houston air quality studies Support advocacy by others on regulatory and policy changes Address technical air monitoring issues and opportunities Makes air quality improvement presentations 3

4 Service Area 4

5 What are NAAQS? National Ambient Air Quality Standards (NAAQS) Address criteria pollutants only Are based on health (Primary Standard) and welfare (Secondary Standard) Establish level and form of standard Provide for adequate margin of safety Must be reviewed every 5 years NAAQS impact Permits Must be met in permits for emissions increases in attainment areas or with offset in nonattainment areas Investment For cleaner fuels or lower emitting facilities to improve air quality 5

6 Monitoring and Data Analysis Objectives Collect, analyze, and report measurement data to support: Air quality planning and rule making Analysis of impacts of emission events Member company permitting efforts Emission inventory comparison efforts Operate and maintain the network such that all data are: Reported in a timely manner and Meet all data quality and completeness criteria 6

7 Days When Houston Area Monitors Exceeded EPA Ozone Air Quality Standard 19 Monitors in Monitors in Monitors in 2018 Significant Decline In Number of Ozone Exceedance Days 2018 data as of 10/01/18 7

8 2018YTD Houston Area Ozone Exceedance Days 1-hour 124 ppb Standard 7 Regulatory Monitors Have Had Exceedance Days in 2018 YTD 2018 data as of 10/01/18 8

9 2018YTD Houston Area Ozone Exceedance Days 8-hour 70 ppb Standard 20 Regulatory Monitors Have Had Exceedance Days in 2018 YTD 2018 data as of 10/01/18 9

10 2018YTD 8-Hour Ozone Design Values Regulatory Monitors In Houston Area Design value is the 3-Yr consecutive average of the 4th highest daily rolling 8-hour maximum ending the year shown ( YTD) All Regulatory Monitors in Houston Area are meeting 84 ppb Standard so far in data as of 10/01/18 10

11 8-Hour Ozone Design Values 1985 to 2018 YTD YTD There Have Been Dramatic Air Quality Improvements in Houston since data as of 10/01/18 11

12 2018YTD 1-Hour Ozone Design Value Regulatory Monitors In Houston Area Design value is the 4 th highest 1 hour average concentration in a 3 year period ( YTD) All Regulatory Monitors in Houston Area Are Meeting the 124 ppb Standard in 2018YTD 2018 data as of 10/01/18 12

13 Houston Area PM hr Average Design Value ( YTD) Design Value 98 th Percentile of the 24-hour PM 2.5 mass conc. averaged over 3 years Data through 6/30/18 13

14 Houston Area PM 2.5 Annual Design Value ( YTD) Design Value Annual mean PM 2.5 mass concentration averaged over 3 years Data through 6/30/18 14

15 Annual Average NOx Concentration and Core Area Monitors (Clinton, Lang, Aldine, Deer Park) An average 63% reduction of NOx since 1988 Data through 10/01/18 15

16 Annual Average HRVOC Concentrations at Auto-GC Sites in the Houston Area ( YTD) Significant HRVOC Reductions At All Sites Data through 10/01/18 16

17 Annual Average HRVOC Concentrations from Auto- GC Sites in the Houston Area ( YTD) An average 42% reduction of HRVOC since 2008 Data through 10/01/18 17

18 Annual Average BTEX Trends from the Network ( YTD) 90% Reduction in BTEX Concentrations Since 1988 Data through 10/01/18 18

19 Benzene Annual Averages PAMS-GC Monitor Sites 2008 through 2018YTD Data through 10/01/18 19

20 Conclusions Houston has the most extensive air monitoring network in the country has a key role in monitoring air quality in Houston continues to evaluate new monitoring technology modernized the monitoring network to maintain and improve performance The air monitoring data demonstrate that air quality has improved greatly and continues to improve 20

21 Appendix - More Information on Houston Air Quality 21

22 Measurement Parameter Monitoring Program Site Location Wallisville Lynchburg O3 CO NOx SO2 H2S True NO2 NOy API Gas Dilution Calibrator Data Logger BAM PM2.5 BAM PM10 PAMS GC Fast Reponse Benzene GC Wind Speed Wind Direction Temperature (Aspirated) Net Radiation Precipitaion Barometric Pressure 6th Day Canister VOC Samples Sample Air Inlet Probe Height (Feet) Met Wind / NOy Sensor Probe Height (feet) AGL N/A Net and Total Radiometer (feet) AGL Precipitation Gauge (feet) AGL N/A = Parameters measured by = Owned and operated by the TCEQ (Note: Vendor/Manufacture may be different than ) = Installed but not operating due to localized construction activities 22

23 2018YTD 8-Hour Ozone Design Values Regulatory Monitors In Houston Area Design value is the 3-Yr consecutive average of the 4th highest daily rolling 8-hour maximum ending the year shown ( YTD) All Regulatory Monitors in Houston Area are meeting 84 ppb Standard so far in data as of 10/01/18 23

24 2018YTD 8-Hour Ozone Design Values Regulatory Monitors In Houston Area Design value is the 3-Yr consecutive average of the 4th highest daily rolling 8-hour maximum ending the year shown ( YTD) All but two Regulatory Monitors in Houston Area are meeting the 75 ppb Standard so far in data as of 10/01/18 24

25 2018YTD 8-Hour Ozone Design Values Regulatory Monitors In Houston Area Design value is the 3-Yr consecutive average of the 4th highest daily rolling 8-hour maximum ending the year shown ( YTD) 13 Regulatory Monitors in Houston Area are not meeting the 70 ppb Standard so far in data as of 10/01/18 25