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Air Quality Division

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  1. Ozone Status andOil and Gas Emission Estimates for the Dallas-Fort Worth (DFW) Area andGreater Barnett Shale Region Air Modeling and Data Analysis Section Air Quality Division Chris Kite Environmental Trade Fair and Conference Austin, Texas May 6, 2014 Air Quality Division

  2. DFW Area Trends in Regulatory Ozone DesignValues and Human Population from 1991-2013

  3. Eight-Hour Ozone Regulatory Design ValueChanges by Monitor - 2003 to 2013 • Color Coding: • Monitors in red were operational prior to 2000 • Monitors in blue began operation in 2000 • Monitors in green began operation after 2000 Pilot Point NA / 84 Denton Airport 97 / 87 Greenville NA / 74 Frisco 88 / 84 Eagle Mountain Lake 96 / 81 Grapevine 100 / 86 Rockwall Heath 81 / 77 Dallas North 86 / 83 Keller 100 / 85 Parker 89 / 79 Hinton 90 / 84 Fort Worth NW 96 / 81 Arlington NA / 80 Dallas Exec. 85 / 80 Kaufman 73 / 74 Midlothian NA / 77 Granbury 84 / 77 Cleburne 90 / 79 Italy NA / 72 Corsicana NA / 72

  4. Fourth Highest Eight-Hour Ozone Levels at Five Northwest DFW Monitors from 2001-2013

  5. Eight-Hour Ozone Regulatory Design Values at Five Northwest DFW Monitors from 2003-2013 Monitored regulatory ozone design value is a three-year rolling average of the fourth highest reading per year. Example: The 2013 monitored design value is an average of the fourth highest monitored levels from 2011, 2012, and 2013.

  6. Emissions Inventory Development for Drilling Rigs and Oil and Natural Gas Production • Drilling rig emission estimates: • The total number of feet drilled per county is aggregated into the following categories: less than 7,000 vertical feet, greater than 7,000 vertical feet, and vertical/horizontal/directional feet. • The feet drilled per county are multiplied by drilling rig emission factors available in Development of Texas Statewide Drilling Rigs Emission Inventories for the Years 1990, 1993, 1996, and 1990 through 2040, Eastern Research Group (ERG), August 2011, which is available at http://www.tceq.state.tx.us/airquality/airmod/project/pj_report_ei.html. • Latest 2013 drilling rig estimates are projected to 2018 by holding feet drilled per county constant and multiplying by 2018 specific emission factors. • Drilling rig emissions are spatially allocated to locations of known well completions. • Oil and gas production emission estimates: • Production data for each well are obtained from the Texas Railroad Commission. • County-level production totals for natural gas, crude oil, condensate, etc. are entered into formulas for 13 compressor categories and 33 operational categories (16 natural gas, 15 crude oil, and 2 condensate). • Equipment specific formulas for making these calculations are available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, ERG, November 2010, which is available at the link above. • Oil and gas production emissions already included as large point sources in the State of Texas Air Reporting System (STARS) are subtracted to avoid double-counting. • Projections to 2018 are based on Forecasting Oil and Gas Activities, ERG, August 2012, which is also available at the link above. • Production emissions are spatially allocated to known operational wells.

  7. 2013 Oil and Gas Drilling Rig EmissionEstimates for Ten-County DFW Area Sources: Texas Railroad Commission for wells drilled during 2013. Emission factors include TxLEDimpacts and are from Tables 4-8, 4-9, and 4-10 on pages 4-14 through 4-18 of Development of Texas Statewide Drilling Rig Emission Inventories for 1990, 1993, 1996, and 1999 through 2040, Eastern Research Group, August 2011.

  8. 2013 Oil and Gas Drilling Rig EmissionEstimates for Fifteen-County Barnett Shale Area Notes: Erath, Jack, Montague, and Palo Pinto counties are not subject to Texas Low Emission Diesel (TxLED), so their 2013 NOX emission factors are 0.2517 for vertical/horizontal, 0.0876 for vertical < 7,000 feet, and 0.3621 for vertical > 7,000 feet.

  9. 2013 Ten-County DFW AreaOil and Gas Production Summary Source: Texas Railroad Commission.

  10. 2013 Fifteen-County Barnett Shale AreaOil and Gas Production Summary Source: Texas Railroad Commission.

  11. 2013 Ten-County DFW AreaOil and Gas Well Summary Source: Texas Railroad Commission.

  12. 2013 Fifteen-County Barnett Shale AreaOil and Gas Well Summary Source: Texas Railroad Commission.

  13. 2013 Natural Gas Compressor Engine Emission Estimates for Ten DFW Area Counties Sources: Natural gas production data from the Texas Railroad Commission. Formulas for estimating compressor engine emissions available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, Eastern Research Group, November 2010.

  14. 2013 Natural Gas Compressor Engine Emission Estimates for Fifteen Barnett Shale Counties Sources: Natural gas production data from the Texas Railroad Commission. Formulas for estimating compressor engine emissions available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, Eastern Research Group, November 2010.

  15. 2013 Natural Gas Production EmissionEstimates for Ten DFW Area Counties Sources: Natural gas production and produced water data from the Texas Railroad Commission. Formulas for estimating production emissions available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, Eastern Research Group, November 2010.

  16. 2013 Natural Gas Production EmissionEstimates for Fifteen Barnett Shale Counties Sources: Natural gas production and produced water data from the Texas Railroad Commission. Formulas for estimating production emissions available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, Eastern Research Group, November 2010.

  17. 2013 Condensate and Crude Oil Production EmissionEstimates for Ten DFW Area Counties Sources: Oil and condensateproduction data from the Texas Railroad Commission. Formulas for estimating production emissions available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, Eastern Research Group, November 2010.

  18. 2013 Condensate and Crude Oil Production EmissionEstimates for Fifteen Barnett Shale Counties Sources: Oil and condensateproduction data from the Texas Railroad Commission. Formulas for estimating production emissions available in Characterization of Oil and Gas Production Equipment and Develop a Methodology to Estimate Statewide Emissions, Eastern Research Group, November 2010.

  19. Barnett Shale Natural Gas ProductionSummary from 1993-2013 • Sources: • Texas Railroad Commission Barnett Shale Web Page: http://www.rrc.state.tx.us/barnettshale/ • U.S. Energy Information Administration Natural Gas Web Page: http://www.eia.gov/naturalgas/

  20. Barnett Shale Gas Production:Historical Levels and Future Projections

  21. Questions? Chris Kite Chris.Kite@tceq.texas.gov 512-239-1959