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Identification of Pollutant Point Emission Sources

GIS Term Project. Identification of Pollutant Point Emission Sources. November 18 th , 2003 Sunghye Chang University of Texas at Austin. Introduction. Purposes - To create database for identifying pollutant point emission source and monitoring site by using GIS ArcMap

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Identification of Pollutant Point Emission Sources

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  1. GIS Term Project Identification of Pollutant Point Emission Sources November 18th, 2003 Sunghye Chang University of Texas at Austin

  2. Introduction • Purposes - To create database for identifying pollutant point emission source and monitoring site by using GIS ArcMap - To determine the magnitude and variability of non-routine emissions (called ‘Event Emission’) relative to average annual emissions - To find remarkable monitoring sites for Event Emission • Focus is on total volatile organic compounds (VOC) and highly reactive volatile organic compounds (HRVOC): ethene, propene, butene, and 1,3-butadiene

  3. Domain Region (Houston Galveston Area) TEXAS Montgomery Orange Harris Jefferson Chamber Houston Galveston Brazoria Map Obtained from Census Tiger 2000

  4. Pollutant Point Sources VOC emissions from TCEQ (2000) Air Emission Event Reports from TCEQ (2003) Monitoring Sites CAMS from TCEQ VOC measurement in monitoring site from EPA (2002) :200MB Data Collection • Sorting Data by Using MS Access by county and type of VOC • Organizing in Excel • Save as DBF file for Attribute table in ArcMap

  5. When DBF file is shown as shape file, and when coordinate is different from default coordinate in ArcMap, the coordinate system need to be defined manually. Lambert Conformal Conic Projection for emission point source. Central Meridian : -100 Standard Parallel 1: 30 Standard Paralle 2: 60 Latitude of Origin: -100 Default Lambert Conformal Conic Projection in ArcMap Central Meridian : -96 Standard Parallel 1: 20 Standard Paralle 2: 60 Latitude of Origin: 40 Defining Coordinate System!

  6. Joining tables for VOC emission sources and monitoring sites • Monitoring Sites • Monitoring coordinate – monitoring CAMS number – Site ID - types of monitoring – VOC Measurement values • Emission Point Sources • Emission point source coordinate – Name of industrial sources– Pollutant emissions – Event source emissions Location VOC Emission Rate

  7. Database of Monitoring Sites 237 CAMS monitoring sites

  8. VOC values in VOC monitoring sites(1/2/2002 – 9/29/2002) 22 VOC monitoring sites 57 VOC species are detected in VOC monitoring sites, and measured in ppb

  9. 26 1035 57 69 1039 Valero Refining Houston Refinery, HG0130C Analysis of monitoring site and defining its main emission source

  10. Event VOC Emissions

  11. Event HRVOC Emissions

  12. Unit: tons/year Unit: tons/year Total VOC Emission (2000) Event VOC Emission (2003) Unit: tons/year Unit: tons/year Event HRVOC Emission (2003) Total HRVOC Emission (2000)

  13. Monitoring Site for Event HRVOC Emission Event HRVOC Emission Unit: tons/year

  14. Conclusions • Spatially distributed emission sources and monitoring sites by GIS ArcMap allows one can recognize the actual location. • Linked database of emission sources and monitoring sites leads convenience of data access. • Monitoring sites which mainly detect Event Emissions would be considered as remarkable monitoring sites for sudden upcoming Event Emissions.

  15. Acknowledgement • Dr. David Maidment • Cindy Murphy in CEER

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